pax_global_header 0000666 0000000 0000000 00000000064 12670607251 0014520 g ustar 00root root 0000000 0000000 52 comment=c42149dd5586a89179913f3299fe7a0282e51213
gral-0.11/ 0000775 0000000 0000000 00000000000 12670607251 0012366 5 ustar 00root root 0000000 0000000 gral-0.11/.gitignore 0000664 0000000 0000000 00000000076 12670607251 0014361 0 ustar 00root root 0000000 0000000 # Gradle temporary files
.gradle
# Gradle output folder
build
gral-0.11/CHANGES.rst 0000664 0000000 0000000 00000005244 12670607251 0014175 0 ustar 00root root 0000000 0000000 GRAL 0.11 (2016-03-11)
======================
Data:
- More robust import of CSV/TSV data
- Added a name to all data sources
Plotting:
- Data sources can have multiple renderers of the same type (point, line,
area) now, which will allow effects like shadows, etc.
- Improved quality of exported bitmap images
General:
- Switched from ``mvn.erichseifert.de`` to Maven Central
- Improved versioning scheme using Git describe
- Many clean-ups and bug fixes
GRAL 0.10 (2013-12-09)
======================
Plotting:
- Replaced all plot settings by regular Java properties
General:
- Migrated the version control system from Subversion to git
- Replaced the Maven build system by Gradle
- Various bug fixes
GRAL 0.9 (2013-05-12)
=====================
Data:
- New JDBC data source that can query data from a database connection
- Support for arbitrary Comparable values and empty values (``null``) in
data sources
- Improved statistics (lazy calculation, quartile statistics, etc.)
- More flexible parsing of CSV files
- All plots are fully serializable
Plotting:
- Two new plot types: box-and-whisker plot and raster plot
- New line renderer for smooth curves
- Automatic scaling for axes
- Support for secondary axes
- Displayed data is clipped to plotting area
- Improved color mapping
- Font and alignment settings for labels
- Improved legends
Interaction:
- All plots implement support mouse navigation
- Interactions can be synchronized between plots
- Panning can be restricted to work only horizontally or vertically
- Improved concurrency
- Localized texts
General:
- Separate packages for library core and examples
- Several fixes to build GRAL with Java 7
- reStructuredText format for documentation instead of DocBook
- More example plots
- Updated and improved documentation
- Various bug fixes
GRAL 0.8 (2010-07-31)
=====================
Data:
- Extensible classes for data import and export
- Vertical and horizontal statistics
- Plots can be exported as bitmap or vector graphics with VectorGraphics2D
- Printing support
Plotting:
- Added area renderers
- Added minor ticks and minor grid lines
- Support for error bars
- Segment gaps in pie plots
- Data sources can be hidden
Interaction:
- Interactive Swing component
General:
- Renamed project to GRAL (GRAphing Library)
- Using Maven as build system
- Added more example plots
- Updated and improved documentation
GRAL 0.7 (2010-01-04)
=====================
First public release as "OpenJChart" supporting x-y plots, bar plots, and
pie plots
gral-0.11/LICENSE.GPL 0000664 0000000 0000000 00000104513 12670607251 0014020 0 ustar 00root root 0000000 0000000 GNU GENERAL PUBLIC LICENSE
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SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
Copyright (C)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
Copyright (C)
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
.
gral-0.11/LICENSE.LGPL 0000664 0000000 0000000 00000016725 12670607251 0014143 0 ustar 00root root 0000000 0000000 GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc.
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
layouts and accessors, or small macros, inline functions and templates
(ten or fewer lines in length), you do both of the following:
a) Give prominent notice with each copy of the object code that the
Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the object code with a copy of the GNU GPL and this license
document.
4. Combined Works.
You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
portions of the Library contained in the Combined Work and reverse
engineering for debugging such modifications, if you also do each of
the following:
a) Give prominent notice with each copy of the Combined Work that
the Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the Combined Work with a copy of the GNU GPL and this license
document.
c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
d) Do one of the following:
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
a copy of the Library already present on the user's computer
system, and (b) will operate properly with a modified version
of the Library that is interface-compatible with the Linked
Version.
e) Provide Installation Information, but only if you would otherwise
be required to provide such information under section 6 of the
GNU GPL, and only to the extent that such information is
necessary to install and execute a modified version of the
Combined Work produced by recombining or relinking the
Application with a modified version of the Linked Version. (If
you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.
If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.
gral-0.11/README.rst 0000664 0000000 0000000 00000007216 12670607251 0014063 0 ustar 00root root 0000000 0000000 GRAL
####
GRAL is a free Java library for displaying plots (graphs, diagrams, and
charts). The acronym GRAL simply stands for *GRAphing Library*.
Features
========
- Ready-to-use classes for data management
- Data processing and filtering (smoothing, rescaling, statistics, histograms)
- Many different plot types: xy/scatter plot, bubble plot, line plot,
area plot, bar plot, pie plot, donut plot, box-and-whisker plot, raster plot
- Legends: horizontal and vertical
- Various axis types: linear axes, logarithmic axes, arbitrary number of axes
- Several file formats are supported as data sources or data sinks (CSV,
bitmap image data, audio file data)
- Exporting plots in bitmap and vector file formats (PNG, GIF, JPEG, EPS, PDF,
SVG)
- Small footprint (about 300 kilobytes)
Usage
=====
Without build management system
-------------------------------
You can just add ``gral-core.jar`` to the classpath of your project.
Using GRAL with Maven
---------------------
If you want to use GRAL with your Maven project you will have to include it as
a dependency in your ``pom.xml``:
.. code:: xml
de.erichseifert.gralgral-core0.11
Using GRAL with Gradle
----------------------
.. code:: groovy
dependencies {
compile group: 'de.erichseifert.gral', name: 'gral-core', version: '0.11'
}
Using GRAL with sbt
-------------------
.. code:: scala
libraryDependencies += "de.erichseifert.gral" % "gral-core" % "0.11"
Building GRAL from source code
==============================
The source package contains all files necessary to build GRAL from scratch using
the `Gradle `__ software project management and
comprehension tool. Like ``Makefile`` files the ``build.gradle`` files are used by
Gradle to generate various distribution or documentation files.
Building a JAR file of the library core
---------------------------------------
In case you just want to build the core of the library to get started execute
the following command in the ``gral-core`` directory::
$ gradle assemble
This will generate a JAR archive named ``gral-core`` in the ``build/libs`` directory.
This JAR file can be added to the class path of your application.
Building a JAR file of the examples
-----------------------------------
In case you just want to build the core of the library to get started execute
the following command in the ``gral-examples`` directory::
$ gradle assemble
This will generate a JAR archive for the examples in the ``build/libs`` directory
which can be used together with the library core to run example applications.
Building the documentation
--------------------------
The GRAL Gradle project offers three sources for documentation:
1. The JavaDoc files that can be generated with::
$ gradle javadoc
2. The reports found in ``build/reports`` containing a project various
information like test results, test coverage, etc. To build these files
just execute::
$ gradle report
3. A book-like documentation in the reStructuredText format is available in the
file ``documentation_en.rst``.
Using GRAL in an IDE
====================
The Gradle project can also be used in your favorite development environment like
Eclipse or NetBeans. For further information look at the following descriptions
on the Gradle website `http://www.gradle.org/tooling`
Once you have installed an appropriate Gradle plug-in for your IDE you will be
able to import the GRAL project found in this folder.
Requirements
============
To build GRAL from source, you need a Gradle version higher than 1.5 and at least Java 6.
gral-0.11/build.gradle 0000664 0000000 0000000 00000005015 12670607251 0014646 0 ustar 00root root 0000000 0000000 description = 'Free Java library for displaying plots'
allprojects {
group = 'de.erichseifert.gral'
version = getVersionString()
ext.inceptionYear = 2009
}
subprojects {
apply plugin: 'java'
sourceCompatibility = 1.6
targetCompatibility = 1.6
ext {
owner1_id = 'eseifert'
owner1_name = 'Erich Seifert'
owner1_email = 'dev[at]erichseifert.de'
owner2_id = 'mseifert'
owner2_name = 'Michael Seifert'
owner2_email = 'mseifert[at]error-reports.org'
website = 'https://github.com/eseifert/gral/'
// Determine the location of rt.jar (required for ProGuard)
if (System.getProperty('os.name').startsWith('Mac')) {
runtimeJar = "${System.getProperty('java.home')}/bundle/Classes/classes.jar"
} else {
runtimeJar = "${System.getProperty('java.home')}/lib/rt.jar"
}
}
repositories {
mavenLocal()
mavenCentral()
}
dependencies {
compile(group: 'de.erichseifert.vectorgraphics2d', name: 'VectorGraphics2D', version: '0.10')
}
apply plugin: 'license'
license {
header(rootProject.file('config/license-header.txt'))
strictCheck(true)
mapping {
java = 'SLASHSTAR_STYLE'
}
def currentYear = new GregorianCalendar().get(Calendar.YEAR);
ext.year = "${inceptionYear}-${currentYear}"
ext.owner1 = owner1_name
ext.email1 = owner1_email
ext.owner2 = owner2_name
ext.email2 = owner2_email
// Exlude certain file types from license checking
// https://github.com/hierynomus/license-gradle-plugin/issues/9
tasks.withType(nl.javadude.gradle.plugins.license.License).each { licenseTask ->
licenseTask.exclude '**.properties'
}
}
apply plugin: 'checkstyle'
checkstyle.configFile = new File("${rootDir}/config/checkstyle.xml")
apply plugin: 'pmd'
pmd {
// TODO: Dynamic dependency resolution possible?
toolVersion = '5.0.5'
ruleSets = ['java-basic']
ignoreFailures = true
}
task sourceJar(type: Jar) {
description = 'Assembles a jar archive containing the source code of the main classes.'
group = 'Build'
from sourceSets.main.allJava
classifier 'sources'
}
}
// Include the License Gradle plugin
buildscript {
repositories {
mavenLocal()
jcenter()
}
dependencies {
classpath 'nl.javadude.gradle.plugins:license-gradle-plugin:0.11.+'
}
}
/*
* This method must not be named getVersion, because it would
* overwrite the implicit getter of the version property in the
* current Project object.
*/
def getVersionString() {
def out = new ByteArrayOutputStream()
exec {
commandLine('git', 'describe', '--tags')
standardOutput = out
}
return out.toString().trim()
}
gral-0.11/config/ 0000775 0000000 0000000 00000000000 12670607251 0013633 5 ustar 00root root 0000000 0000000 gral-0.11/config/checkstyle.xml 0000664 0000000 0000000 00000005271 12670607251 0016520 0 ustar 00root root 0000000 0000000
gral-0.11/config/license-header.txt 0000664 0000000 0000000 00000001345 12670607251 0017247 0 ustar 00root root 0000000 0000000 GRAL: GRAphing Library for Java(R)
(C) Copyright ${year} ${owner1} <${email1}>,
${owner2} <${email2}>
This file is part of GRAL.
GRAL is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GRAL is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GRAL. If not, see .
gral-0.11/gral-core/ 0000775 0000000 0000000 00000000000 12670607251 0014241 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/build.gradle 0000664 0000000 0000000 00000005360 12670607251 0016524 0 ustar 00root root 0000000 0000000 description = 'GRAL core'
dependencies {
testCompile(group: 'junit', name: 'junit', version: '4.12')
}
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'net.saliman:gradle-cobertura-plugin:2.2.5'
}
}
apply plugin: 'net.saliman.cobertura'
task report {
dependsOn = ['cobertura', check]
description = 'Generates reports.'
group = 'Report'
tasks.withType(Pmd).each {pmdTask ->
pmdTask.ignoreFailures = true
}
tasks.withType(Checkstyle).each {checkstyleTask ->
checkstyleTask.ignoreFailures = true
checkstyleTask.showViolations = false
}
}
task shrinkJar(type: proguard.gradle.ProGuardTask, dependsOn: jar) {
description = 'Uses ProGuard to reduce the code size of this project.'
group = 'Build'
// Configure ProGuard
configuration("${projectDir}/src/etc/proguard.conf")
target(targetCompatibility.toString())
injars(jar.archivePath)
outjars("${libsDir}/shrunk/${jar.archiveName}")
libraryjars(runtimeJar)
libraryjars(configurations.runtime)
}
task javadocJar(type: Jar) {
description = 'Assembles a jar archive containing the API doc.'
group = 'Build'
from javadoc
classifier 'javadoc'
}
apply plugin: 'maven'
apply plugin: 'signing'
artifacts {
archives shrinkJar.getOutJarFileCollection().getSingleFile(), sourceJar, javadocJar
}
signing {
sign configurations.archives
}
uploadArchives {
repositories {
mavenDeployer {
beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
repository(url: 'https://oss.sonatype.org/service/local/staging/deploy/maven2/') {
authentication(userName: ossrhUsername, password: ossrhPassword)
}
snapshotRepository(url: 'https://oss.sonatype.org/content/repositories/snapshots/') {
authentication(userName: ossrhUsername, password: ossrhPassword)
}
pom.project {
name rootProject.name
packaging 'jar'
description rootProject.description
url website
inceptionYear inceptionYear
licenses {
license {
name 'GNU Library or Lesser General Public License (LGPL)'
url 'http://www.gnu.org/licenses/lgpl.txt'
}
}
developers {
developer {
id owner1_id
name owner1_name
email owner1_email
}
developer {
id owner2_id
name owner2_name
email owner2_email
}
}
scm {
connection 'scm:git:git://github.com/eseifert/gral.git'
developerConnection 'scm:git:git@github.com:eseifert/gral.git'
url website
}
issueManagement {
system 'GitHub Issues'
url website
}
}
}
}
}
signArchives.dependsOn(shrinkJar)
// Include the proguard-gradle plugin
buildscript {
repositories {
mavenLocal()
mavenCentral()
}
dependencies {
classpath(group: 'net.sf.proguard', name: 'proguard-gradle', version: '5.2.+')
}
}
gral-0.11/gral-core/src/ 0000775 0000000 0000000 00000000000 12670607251 0015030 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/etc/ 0000775 0000000 0000000 00000000000 12670607251 0015603 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/etc/proguard.conf 0000664 0000000 0000000 00000001775 12670607251 0020307 0 ustar 00root root 0000000 0000000 -renamesourcefileattribute SourceFile
-keepattributes Exceptions,InnerClasses,Signature,Deprecated,
SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
-keep public class * {
public protected *;
}
-keepclassmembernames class * {
java.lang.Class class$(java.lang.String);
java.lang.Class class$(java.lang.String, boolean);
}
-keepclasseswithmembernames class * {
native ;
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keepclassmembers class * implements java.io.Serializable {
static final long serialVersionUID;
private static final java.io.ObjectStreamField[] serialPersistentFields;
private void writeObject(java.io.ObjectOutputStream);
private void readObject(java.io.ObjectInputStream);
java.lang.Object writeReplace();
java.lang.Object readResolve();
}
-keepclassmembers class * extends de.erichseifert.gral.io.IOCapabilitiesStorage {
java.util.Set getCapabilities();
}
gral-0.11/gral-core/src/main/ 0000775 0000000 0000000 00000000000 12670607251 0015754 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/ 0000775 0000000 0000000 00000000000 12670607251 0016675 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/ 0000775 0000000 0000000 00000000000 12670607251 0017265 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/erichseifert/ 0000775 0000000 0000000 00000000000 12670607251 0021741 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/erichseifert/gral/ 0000775 0000000 0000000 00000000000 12670607251 0022666 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/ 0000775 0000000 0000000 00000000000 12670607251 0023577 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/AbstractDataSource.java 0000664 0000000 0000000 00000020526 12670607251 0030165 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.Set;
import de.erichseifert.gral.data.statistics.Statistics;
/**
* Abstract implementation of the {@code DataSource} interface.
* This class provides access to statistical information,
* administration and notification of listeners and supports
* iteration of data values.
*/
public abstract class AbstractDataSource implements DataSource, Serializable {
/** Version id for serialization. */
private static final long serialVersionUID = 9139975565475816812L;
/** Name of the data source. */
private String name;
/** Number of columns. */
private int columnCount;
/** Data types that are allowed in the respective columns. */
private Class>[] types;
/** Set of objects that will be notified of changes to the data values. */
private transient Set dataListeners;
/** Statistical description of the data values. */
private transient Statistics statistics;
/**
* Iterator that returns each row of the DataSource.
*/
private class DataSourceIterator implements Iterator> {
/** Index of current column. */
private int col;
/** Index of current row. */
private int row;
/**
* Initializes a new iterator instance that starts at (0, 0).
*/
public DataSourceIterator() {
col = 0;
row = 0;
}
/**
* Returns {@code true} if the iteration has more elements.
* (In other words, returns {@code true} if {@code next}
* would return an element rather than throwing an exception.)
* @return {@code true} if the iterator has more elements.
*/
public boolean hasNext() {
return (col < getColumnCount()) && (row < getRowCount());
}
/**
* Returns the next element in the iteration.
* @return the next element in the iteration.
* @exception NoSuchElementException iteration has no more elements.
*/
public Comparable next() {
if (!hasNext()) {
throw new NoSuchElementException();
}
Comparable value = get(col, row);
if (++col >= getColumnCount()) {
col = 0;
++row;
}
return value;
}
/**
* Method that theoretically removes a cell from a data source.
* However, this is not supported.
*/
public void remove() {
throw new UnsupportedOperationException();
}
}
/**
* Initializes a new instance with the specified name, number of columns, and
* column types.
* @param name name of the DataSource
* @param types type for each column
*/
public AbstractDataSource(String name, Class>... types) {
this.name = name;
setColumnTypes(types);
dataListeners = new LinkedHashSet();
}
/**
* Initializes a new instance with the specified number of columns and
* column types.
* @param types type for each column
*/
public AbstractDataSource(Class>... types) {
this(null, types);
}
/**
* Retrieves a object instance that contains various statistical
* information on the current data source.
* @return statistical information
*/
public Statistics getStatistics() {
if (statistics == null) {
statistics = new Statistics(this);
}
return statistics;
}
/**
* Adds the specified {@code DataListener} to this data source.
* @param dataListener listener to be added.
*/
public void addDataListener(DataListener dataListener) {
dataListeners.add(dataListener);
}
/**
* Removes the specified {@code DataListener} from this data source.
* @param dataListener listener to be removed.
*/
public void removeDataListener(DataListener dataListener) {
dataListeners.remove(dataListener);
}
/**
* Returns an iterator over a set of elements of type T.
*
* @return an Iterator.
*/
public Iterator> iterator() {
return new DataSourceIterator();
}
/**
* Notifies all registered listeners that data values have been added.
* @param events Event objects describing all values that have been added.
*/
protected void notifyDataAdded(DataChangeEvent... events) {
List listeners = new LinkedList(dataListeners);
for (DataListener dataListener : listeners) {
dataListener.dataAdded(this, events);
}
}
/**
* Notifies all registered listeners that data values have been removed.
* @param events Event objects describing all values that have been removed.
*/
protected void notifyDataRemoved(DataChangeEvent... events) {
List listeners = new LinkedList(dataListeners);
for (DataListener dataListener : listeners) {
dataListener.dataRemoved(this, events);
}
}
/**
* Notifies all registered listeners that data values have changed.
* @param events Event objects describing all values that have changed.
*/
protected void notifyDataUpdated(DataChangeEvent... events) {
List listeners = new LinkedList(dataListeners);
for (DataListener dataListener : listeners) {
dataListener.dataUpdated(this, events);
}
}
/**
* Returns the column with the specified index.
* @param col index of the column to return
* @return the specified column of the data source
*/
public Column getColumn(int col) {
return new Column(this, col);
}
@Override
public String getName() {
return name;
}
// Allows DataTable to reuse the name property
protected void setName(String name) {
this.name = name;
}
/**
* Returns the number of columns of the data source.
* @return number of columns in the data source.
*/
public int getColumnCount() {
return columnCount;
}
/**
* Returns the data types of all columns.
* @return The data types of all column in the data source
*/
public Class>[] getColumnTypes() {
Class>[] types =
Arrays.copyOf(this.types, this.types.length);
return types;
}
/**
* Returns whether the column at the specified index contains numbers.
* @param columnIndex Index of the column to test.
* @return {@code true} if the column is numeric, otherwise {@code false}.
*/
public boolean isColumnNumeric(int columnIndex) {
if (columnIndex < 0 || columnIndex >= types.length) {
return false;
}
Class columnType = types[columnIndex];
return Number.class.isAssignableFrom(columnType);
}
/**
* Sets the data types of all columns. This also changes the number of
* columns.
* @param types Data types.
*/
protected void setColumnTypes(Class>... types) {
this.types = Arrays.copyOf(types, types.length);
columnCount = types.length;
}
/**
* Returns the row with the specified index.
* @param row Index of the row to return
* @return the Specified row of the data source
*/
public Row getRow(int row) {
return new Row(this, row);
}
/**
* Custom deserialization method.
* @param in Input stream.
* @throws ClassNotFoundException if a serialized class doesn't exist anymore.
* @throws IOException if there is an error while reading data from the
* input stream.
*/
private void readObject(ObjectInputStream in)
throws ClassNotFoundException, IOException {
// Normal deserialization
in.defaultReadObject();
// Handle transient fields
dataListeners = new HashSet();
// Statistics can be omitted. It's created using a lazy getter.
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/Column.java 0000664 0000000 0000000 00000004323 12670607251 0025701 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import de.erichseifert.gral.graphics.Orientation;
/**
*
Class for accessing a specific column of a data source. The data of the
* column can be accessed using the {@code get(int)} method.
*
*
Example for accessing value at column 2, row 3 of a data source:
*
* Column col = new Column(dataSource, 2);
* Number v = col.get(3);
*
*
* @see DataSource
*/
public class Column extends DataAccessor {
/** Version id for serialization. */
private static final long serialVersionUID = 7380420622890027262L;
/**
* Initializes a new instance with the specified data source and column
* index.
* @param source Data source.
* @param col Column index.
*/
public Column(DataSource source, int col) {
super(source, col);
}
@Override
public Comparable get(int row) {
DataSource source = getSource();
if (source == null) {
return null;
}
return source.get(getIndex(), row);
}
@Override
public int size() {
return getSource().getRowCount();
}
@Override
public double getStatistics(String key) {
return getSource().getStatistics()
.get(key, Orientation.VERTICAL, getIndex());
}
/**
* Returns whether this column only contains numbers.
* @return {@code true} if this column is numeric, otherwise {@code false}.
*/
public boolean isNumeric() {
return getSource().isColumnNumeric(getIndex());
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataAccessor.java 0000664 0000000 0000000 00000010642 12670607251 0027001 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.io.Serializable;
import java.text.MessageFormat;
import java.util.Iterator;
import java.util.Locale;
/**
* Abstract base for reading substructures of a data source, i.e. columns or
* rows. {@code DataAccessor}s are iterable and provide utility methods
* for statistics and array conversion.
* @see DataSource
*/
public abstract class DataAccessor
implements Iterable>, Serializable {
/** Version id for serialization. */
private static final long serialVersionUID = -6977184455447753502L;
/** Data source that provides the values that should be accessed. */
private final DataSource source;
/** Index of current column or row. */
private final int index;
/**
* Initializes a new instance with the specified data source and an access
* index.
* @param source Data source.
* @param index Column index.
*/
public DataAccessor(DataSource source, int index) {
this.source = source;
this.index = index;
}
/**
* Returns the data source containing this column.
* @return Data source containing this column.
*/
public DataSource getSource() {
return source;
}
/**
* Returns the index to access the data source.
* @return Data index.
*/
public int getIndex() {
return index;
}
/**
* Returns the value of the data source for the specified index.
* @param index Index.
* @return Value of the accessed cell.
*/
public abstract Comparable get(int index);
/**
* Returns the number of elements in this column.
* @return Number of elements
*/
public abstract int size();
@Override
public boolean equals(Object obj) {
if (!(obj instanceof DataAccessor)) {
return false;
}
DataAccessor accessor = (DataAccessor) obj;
int size = size();
if (accessor.size() != size) {
return false;
}
for (int i = 0; i < size; i++) {
Comparable foreignValue = accessor.get(i);
Comparable thisValue = get(i);
if (foreignValue == null) {
if (thisValue != null) {
return false;
}
continue;
}
if (!foreignValue.equals(thisValue)) {
return false;
}
}
return true;
}
@Override
public int hashCode() {
return source.hashCode() ^ index;
}
@Override
public String toString() {
return String.format(Locale.US,
"%s[source=%s,index=%d]", //$NON-NLS-1$
getClass().getName(), getSource(), getIndex());
}
/**
* Converts the data column to an array.
* @param data Optional array as data sink.
* If array is {@code null} a new array will be created.
* @return Array with row data;
*/
public Comparable[] toArray(Comparable[] data) {
if (data == null) {
data = new Comparable[size()];
}
if (data.length != size()) {
throw new IllegalArgumentException(MessageFormat.format(
"Array of size {0,number,integer} does not match {1,number,integer} elements.", //$NON-NLS-1$
data.length, size()));
}
for (int i = 0; i < data.length; i++) {
data[i] = get(i);
}
return data;
}
/**
* Returns the specified statistical information for this data.
* @param key Requested Statistical information.
* @return Calculated value.
*/
public abstract double getStatistics(String key);
/**
* Returns an iterator over the elements of this object.
* @return an iterator.
*/
public Iterator> iterator() {
return new Iterator>() {
private int i;
public boolean hasNext() {
return i < size();
}
public Comparable next() {
Comparable value = get(i++);
return value;
}
public void remove() {
throw new UnsupportedOperationException();
}
};
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataChangeEvent.java 0000664 0000000 0000000 00000005134 12670607251 0027426 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.util.EventObject;
/**
* Class that stores information on a change of a specific data value in a
* data source.
* @see DataListener
* @see DataSource
*/
public class DataChangeEvent extends EventObject {
/** Version id for serialization. */
private static final long serialVersionUID = -3791650088885473144L;
/** Column of the value that has changed. */
private final int col;
/** Row of the value that has changed. */
private final int row;
/** Value before changes have been applied. */
private final Comparable valOld;
/** Changed value. */
private final Comparable valNew;
/**
* Initializes a new event with data source, position of the data value,
* and the values.
* @param Data type of the cell that has changed.
* @param source Data source.
* @param col Columns of the value.
* @param row Row of the value.
* @param valOld Old value.
* @param valNew New value.
*/
public DataChangeEvent(DataSource source, int col, int row,
Comparable valOld, Comparable valNew) {
super(source);
this.col = col;
this.row = row;
this.valOld = valOld;
this.valNew = valNew;
}
/**
* Returns the column index of the value that was changed.
* @return Column index of the changed value.
*/
public int getCol() {
return col;
}
/**
* Returns the row index of the value that was changed.
* @return Row index of the changed value.
*/
public int getRow() {
return row;
}
/**
* Returns the old value before it has changed.
* @return Value before the change.
*/
public Comparable getOld() {
return valOld;
}
/**
* Returns the new value after the change has been applied.
* @return Value after the change.
*/
public Comparable getNew() {
return valNew;
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataListener.java 0000664 0000000 0000000 00000004301 12670607251 0027017 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
/**
* Interface that can be implemented to listen for changes in data sources.
* @see DataSource
*/
public interface DataListener {
/**
* Method that is invoked when data has been added.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been added.
*/
void dataAdded(DataSource source, DataChangeEvent... events);
/**
* Method that is invoked when data has been updated.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been updated.
*/
void dataUpdated(DataSource source, DataChangeEvent... events);
/**
* Method that is invoked when data has been removed.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been removed.
*/
void dataRemoved(DataSource source, DataChangeEvent... events);
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataSeries.java 0000664 0000000 0000000 00000012303 12670607251 0026465 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.ArrayList;
import java.util.List;
/**
* Class that represents a view on several columns of a {@code DataSource}.
* @see DataSource
*/
public class DataSeries extends AbstractDataSource implements DataListener {
/** Version id for serialization. */
private static final long serialVersionUID = 5568085894125740972L;
/** Data source that provides the columns for this data series. */
private final DataSource data;
/** Columns that should be mapped to the series. */
private final List cols;
/**
* Constructor without name. The first column will be column
* {@code 0}, the second column {@code 1} and so on,
* whereas the value of the specified columns is the column number
* in the data source.
* @param data Data source
* @param cols Column numbers
*/
public DataSeries(DataSource data, int... cols) {
this(null, data, cols);
}
/**
* Constructor that initializes a named data series. The first column will
* be column {@code 0}, the second column {@code 1} and so on,
* whereas the value of the specified columns is the column number in the
* data source.
* @param name Descriptive name
* @param data Data source
* @param cols Column numbers
*/
@SuppressWarnings("unchecked")
public DataSeries(String name, DataSource data, int... cols) {
super(name);
this.data = data;
this.cols = new ArrayList();
this.data.addDataListener(this);
Class>[] typesOrig = data.getColumnTypes();
Class>[] types;
if (cols.length > 0) {
types = new Class[cols.length];
int t = 0;
for (int colIndex : cols) {
this.cols.add(colIndex);
types[t++] = typesOrig[colIndex];
}
} else {
for (int colIndex = 0; colIndex < data.getColumnCount(); colIndex++) {
this.cols.add(colIndex);
}
types = typesOrig;
}
setColumnTypes(types);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
try {
int dataCol = cols.get(col);
return data.get(dataCol, row);
} catch (IndexOutOfBoundsException e) {
return null;
}
}
@Override
public int getColumnCount() {
return cols.size();
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
return data.getRowCount();
}
/**
* Method that is invoked when data has been added.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been added.
*/
public void dataAdded(DataSource source, DataChangeEvent... events) {
notifyDataAdded(events);
}
/**
* Method that is invoked when data has been updated.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been updated.
*/
public void dataUpdated(DataSource source, DataChangeEvent... events) {
notifyDataUpdated(events);
}
/**
* Method that is invoked when data has been removed.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been removed.
*/
public void dataRemoved(DataSource source, DataChangeEvent... events) {
notifyDataRemoved(events);
}
@Override
public String toString() {
return getName();
}
/**
* Custom deserialization method.
* @param in Input stream.
* @throws ClassNotFoundException if a serialized class doesn't exist anymore.
* @throws IOException if there is an error while reading data from the
* input stream.
*/
private void readObject(ObjectInputStream in)
throws ClassNotFoundException, IOException {
// Normal deserialization
in.defaultReadObject();
// Restore listeners
data.addDataListener(this);
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataSource.java 0000664 0000000 0000000 00000005707 12670607251 0026505 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import de.erichseifert.gral.data.statistics.Statistics;
/**
* Interface for an immutable access to tabular data.
*
* @see MutableDataSource
*/
public interface DataSource extends Iterable> {
/**
* Returns the column with the specified index.
* @param col index of the column to return
* @return the specified column of the data source
*/
Column getColumn(int col);
/**
* Returns the data types of all columns.
* @return The data types of all column in the data source
*/
Class>[] getColumnTypes();
/**
* Returns the row with the specified index.
* @param row index of the row to return
* @return the specified row of the data source
*/
Row getRow(int row);
/**
* Returns the value with the specified row and column index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
Comparable get(int col, int row);
/**
* Retrieves a object instance that contains various statistical
* information on the current data source.
* @return statistical information
*/
Statistics getStatistics();
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
int getRowCount();
/**
* Returns the name of this series.
* @return a name string
*/
String getName();
/**
* Returns the number of columns of the data source.
* @return number of columns in the data source.
*/
int getColumnCount();
/**
* Returns whether the column at the specified index contains numbers.
* @param columnIndex Index of the column to test.
* @return {@code true} if the column is numeric, otherwise {@code false}.
*/
boolean isColumnNumeric(int columnIndex);
/**
* Adds the specified {@code DataListener} to this data source.
* @param dataListener listener to be added.
*/
void addDataListener(DataListener dataListener);
/**
* Removes the specified {@code DataListener} from this data source.
* @param dataListener listener to be removed.
*/
void removeDataListener(DataListener dataListener);
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DataTable.java 0000664 0000000 0000000 00000022174 12670607251 0026271 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import de.erichseifert.gral.data.comparators.DataComparator;
/**
* An in-memory, random access implementation of a mutable data source using
* arrays to store its values.
*
* @see DataSource
* @see MutableDataSource
*/
public class DataTable extends AbstractDataSource implements MutableDataSource {
/** Version id for serialization. */
private static final long serialVersionUID = 535236774042654449L;
/** All values stored as rows of column arrays. */
private final List[]> rows;
/**
* Comparator class for comparing two arrays containing row data using a
* specified set of {@code DataComparator}s.
*/
private final class RowComparator implements Comparator[]> {
/** Rules to use for sorting. */
private final DataComparator[] comparators;
/**
* Initializes a new instance with a specified set of
* {@code DataComparator}s.
* @param comparators Set of {@code DataComparator}s to use as rules.
*/
public RowComparator(DataComparator[] comparators) {
this.comparators = comparators;
}
/**
* Compares two rows using the rules defined by the
* {@code DataComparator}s of this instance.
* @param row1 First row to compare.
* @param row2 Second row to compare.
* @return A negative number if first argument is less than the second,
* zero if first argument is equal to the second,
* or a positive integer as the greater than the second.
*/
public int compare(Comparable[] row1, Comparable[] row2) {
for (DataComparator comparator : comparators) {
int result = comparator.compare(row1, row2);
if (result != 0) {
return result;
}
}
return 0;
}
}
/**
* Initializes a new instance with the specified number of columns and
* column types.
* @param types Type for each column
*/
public DataTable(Class>... types) {
super(types);
rows = new ArrayList[]>();
}
/**
* Initializes a new instance with the specified number of columns and
* a single column type.
* @param cols Number of columns
* @param type Data type for all columns
*/
@SuppressWarnings("unchecked")
public DataTable(int cols, Class> type) {
this();
Class>[] types = new Class[cols];
Arrays.fill(types, type);
setColumnTypes(types);
}
/**
* Initializes a new instance with the column types, and data of another
* data source.
* @param source Data source to clone.
*/
public DataTable(DataSource source) {
this(source.getColumnTypes());
for (int rowIndex = 0; rowIndex < source.getRowCount(); rowIndex++) {
add(source.getRow(rowIndex));
}
}
/**
* Adds a row with the specified comparable values to the table.
* The values are added in the order they are specified. If the types of
* the table columns and the values do not match, an
* {@code IllegalArgumentException} is thrown.
* @param values values to be added as a row
* @return Index of the row that has been added.
*/
public int add(Comparable... values) {
return add(Arrays.asList(values));
}
/**
* Adds a row with the specified container's elements to the table.
* The values are added in the order they are specified. If the types of
* the table columns and the values do not match, an
* {@code IllegalArgumentException} is thrown.
* @param values values to be added as a row
* @return Index of the row that has been added.
*/
public int add(Collection> values) {
DataChangeEvent[] events;
if (values.size() != getColumnCount()) {
throw new IllegalArgumentException(MessageFormat.format(
"Wrong number of columns! Expected {0,number,integer}, got {1,number,integer}.", //$NON-NLS-1$
getColumnCount(), values.size()));
}
Comparable[] row = new Comparable[values.size()];
events = new DataChangeEvent[row.length];
Class>[] types = getColumnTypes();
int rowIndex = 0;
synchronized (rows) {
int colIndex = 0;
for (Comparable value : values) {
if ((value != null)
&& !(types[colIndex].isAssignableFrom(value.getClass()))) {
throw new IllegalArgumentException(MessageFormat.format(
"Wrong column type! Expected {0}, got {1}.", //$NON-NLS-1$
types[colIndex], value.getClass()));
}
row[colIndex] = value;
events[colIndex] = new DataChangeEvent(this, colIndex, rows.size(), null, value);
colIndex++;
}
rows.add(row);
rowIndex = rows.size();
}
notifyDataAdded(events);
return rowIndex - 1;
}
/**
* Adds the specified row to the table.
* The values are added in the order they are specified. If the types of
* the table columns and the values do not match, an
* {@code IllegalArgumentException} is thrown.
* @param row Row to be added
* @return Index of the row that has been added.
*/
public int add(Row row) {
List> values;
synchronized (row) {
values = new ArrayList>(row.size());
for (Comparable value : row) {
values.add(value);
}
}
return add(values);
}
/**
* Removes a specified row from the table.
* @param row Index of the row to remove
*/
public void remove(int row) {
DataChangeEvent[] events;
synchronized (rows) {
Row r = new Row(this, row);
events = new DataChangeEvent[getColumnCount()];
for (int col = 0; col < events.length; col++) {
events[col] = new DataChangeEvent(this, col, row, r.get(col), null);
}
rows.remove(row);
}
notifyDataRemoved(events);
}
/**
* Removes the last row from the table.
*/
public void removeLast() {
DataChangeEvent[] events;
synchronized (this) {
int row = getRowCount() - 1;
Row r = new Row(this, row);
events = new DataChangeEvent[getColumnCount()];
for (int col = 0; col < events.length; col++) {
events[col] = new DataChangeEvent(this, col, row, r.get(col), null);
}
rows.remove(row);
}
notifyDataRemoved(events);
}
/**
* Deletes all rows this table contains.
*/
public void clear() {
DataChangeEvent[] events;
synchronized (this) {
int cols = getColumnCount();
int rows = getRowCount();
events = new DataChangeEvent[cols*rows];
for (int row = 0; row < rows; row++) {
for (int col = 0; col < cols; col++) {
events[col + row*cols] = new DataChangeEvent(
this, col, row, get(col, row), null);
}
}
this.rows.clear();
}
notifyDataRemoved(events);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
Comparable[] r;
synchronized (rows) {
if (row >= rows.size()) {
return null;
}
r = rows.get(row);
}
if (r == null) {
return null;
}
return r[col];
}
/**
* Sets the value of a cell specified by its column and row indexes.
* @param Data type of the cell.
* @param col Column of the cell to change.
* @param row Row of the cell to change.
* @param value New value to be set.
* @return Old value that was replaced.
*/
@SuppressWarnings("unchecked")
public Comparable set(int col, int row, Comparable value) {
Comparable old;
DataChangeEvent event = null;
synchronized (this) {
old = (Comparable) get(col, row);
if (old == null || !old.equals(value)) {
rows.get(row)[col] = value;
event = new DataChangeEvent(this, col, row, old, value);
}
}
if (event != null) {
notifyDataUpdated(event);
}
return old;
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
return rows.size();
}
/**
* Sorts the table rows with the specified DataComparators.
* The row values are compared in the way the comparators are specified.
* @param comparators comparators used for sorting
*/
public void sort(final DataComparator... comparators) {
synchronized (rows) {
RowComparator comparator = new RowComparator(comparators);
Collections.sort(rows, comparator);
}
}
@Override
public void setName(String name) {
super.setName(name);
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/DummyData.java 0000664 0000000 0000000 00000004654 12670607251 0026340 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.util.Arrays;
/**
* Class that represents a data source containing the same value in each cell.
* It can be used for test purposes or for efficiently creating constant data.
*/
public class DummyData extends AbstractDataSource {
/** Version id for serialization. */
private static final long serialVersionUID = 5780257823757438260L;
/** Value that will be returned for all positions in this data source. */
private final Comparable value;
/** Number of columns. */
private final int cols;
/** Number of rows. */
private final int rows;
/**
* Creates a new instance with the specified number of columns
* and rows, which are filled all over with the same specified value.
* @param cols Number of columns.
* @param rows Number of rows.
* @param value Value of the cells.
*/
@SuppressWarnings("unchecked")
public DummyData(int cols, int rows, Comparable value) {
value.getClass();
this.cols = cols;
this.rows = rows;
this.value = value;
Class>[] types = new Class[cols];
Arrays.fill(types, value.getClass());
setColumnTypes(types);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
return value;
}
@Override
public int getColumnCount() {
return cols;
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
return rows;
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/EnumeratedData.java 0000664 0000000 0000000 00000013162 12670607251 0027330 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
/**
*
Class that creates a new data source which adds a leading column
* containing the row number.
*
*
Example which creates a two column data source from a one column
* histogram:
*
* DataSource hist = new Histogram1D(data, Orientation.HORIZONTAL, 10);
* DataSource hist2d = new EnumeratedData(hist);
*
*
* @see DataSource
*/
public class EnumeratedData extends AbstractDataSource
implements DataListener {
/** Version id for serialization. */
private static final long serialVersionUID = -4952487410608980063L;
/** Data source which will be used as base for enumeration. */
private final DataSource original;
/** Value to start counting from. */
private final double offset;
/** Width of enumeration steps. */
private final double steps;
/**
* Initializes a new data source based on an original data source which
* will contain an additional column which enumerates all rows. The
* enumeration will start at a specified offset and will have a specified
* step size.
* @param original Original data source.
* @param offset Offset of enumeration
* @param steps Scaling of enumeration
*/
@SuppressWarnings("unchecked")
public EnumeratedData(DataSource original, double offset, double steps) {
this.original = original;
this.offset = offset;
this.steps = steps;
Class>[] typesOrig = original.getColumnTypes();
Class>[] types = new Class[typesOrig.length + 1];
System.arraycopy(typesOrig, 0, types, 1, typesOrig.length);
types[0] = Double.class;
setColumnTypes(types);
original.addDataListener(this);
}
/**
* Initializes a new data source based on an original data source which
* will contain an additional column which enumerates all rows.
* @param original Original data source.
*/
public EnumeratedData(DataSource original) {
this(original, 0, 1);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
if (col < 1) {
return row*steps + offset;
}
return original.get(col - 1, row);
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
return original.getRowCount();
}
/**
* Method that is invoked when data has been added.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been added.
*/
public void dataAdded(DataSource source, DataChangeEvent... events) {
notifyDataAdded(takeEvents(events));
}
/**
* Method that is invoked when data has been updated.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been updated.
*/
public void dataUpdated(DataSource source, DataChangeEvent... events) {
notifyDataUpdated(takeEvents(events));
}
/**
* Method that is invoked when data has been added.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been removed.
*/
public void dataRemoved(DataSource source, DataChangeEvent... events) {
notifyDataRemoved(takeEvents(events));
}
/**
* Changes the source and the columns of the specified event objects to
* make them look as if they originated from this data source.
* @param events Original events.
* @return Changed events.
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
private DataChangeEvent[] takeEvents(DataChangeEvent[] events) {
if (events == null || events.length == 0) {
return new DataChangeEvent[] {
new DataChangeEvent(this, 0, 0, null, null)
};
}
DataChangeEvent[] eventsTx = new DataChangeEvent[events.length + 1];
for (int i = 0; i < eventsTx.length; i++) {
DataChangeEvent event;
int col, row;
if (i == 0) {
// Insert an event for the generated column
event = events[0];
col = 0;
row = event.getRow();
} else {
// Process the columns of the original source
event = events[i - 1];
col = event.getCol() + 1;
row = event.getRow();
}
Comparable valOld = event.getOld();
Comparable valNew = event.getNew();
eventsTx[i] = new DataChangeEvent(
this, col, row, valOld, valNew);
}
return eventsTx;
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/JdbcData.java 0000664 0000000 0000000 00000021143 12670607251 0026077 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;
/**
* Data source for database tables accessed through a JDBC connection.
*/
public class JdbcData extends AbstractDataSource {
/** Version id for serialization. */
private static final long serialVersionUID = 5196527358266585129L;
/** The JDBC connection. */
private final Connection connection;
/** The name of the table containing the data. */
private final String table;
/** Flag that tells whether this object uses buffering. */
private boolean buffered;
/** Buffered number of rows. Only valid when the object is buffered. */
private int bufferedRowCount;
/** Buffered result of the JDBC data query. Only valid when the object is
buffered. */
private ResultSet bufferedQuery;
/** Last row accessed by the {@link #get(int, int)} method.
Only valid when the object is buffered. */
private int bufferedQueryRow;
/**
* Initializes a new instance to query the data from a specified table
* using a specified JDBC connection. It is assumed the table columns
* are constant during the connection.
* @param connection JDBC connection object.
* @param table Properly quoted name of the table.
* @param buffered Turns on buffering of JDBC queries.
*/
@SuppressWarnings("unchecked")
public JdbcData(Connection connection, String table, boolean buffered) {
this.connection = connection;
this.table = table;
setBuffered(buffered);
try {
setColumnTypes(getJdbcColumnTypes());
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* Initializes a new buffered instance to query the data from a specified
* table using a specified JDBC connection.
* @param connection JDBC connection object.
* @param table Properly quoted name of the table.
*/
public JdbcData(Connection connection, String table) {
this(connection, table, true);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
try {
ResultSet result = bufferedQuery;
if (!isBuffered() || result == null) {
PreparedStatement stmt = connection.prepareStatement(
"SELECT * FROM " + table + "", //$NON-NLS-1$ //$NON-NLS-2$
ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
result = stmt.executeQuery();
if (isBuffered()) {
bufferedQuery = result;
}
}
if (!isBuffered() || row != bufferedQueryRow) {
result.absolute(row + 1);
bufferedQueryRow = row;
}
return jdbcToJavaValue(result, col);
} catch (SQLException e) {
e.printStackTrace();
return null;
}
}
@Override
public int getColumnCount() {
if (getColumnTypes() != null) {
return getColumnTypes().length;
}
return 0;
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
int rowCount = bufferedRowCount;
if (!isBuffered() || rowCount < 0) {
try {
PreparedStatement stmt = connection.prepareStatement(
"SELECT COUNT(*) FROM " + table, //$NON-NLS-1$
ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY);
ResultSet result = stmt.executeQuery();
if (result.first()) {
rowCount = result.getInt(1);
bufferedRowCount = rowCount;
} else {
rowCount = 0;
}
result.close();
} catch (SQLException e) {
e.printStackTrace();
rowCount = 0;
}
}
return rowCount;
}
/**
* Fetches the column types as Java {@code Class} objects from the
* JDBC table.
* @return Column types as Java {@code Class} objects
* @throws SQLException if an error occurs during access to JDBC table.
*/
@SuppressWarnings("unchecked")
private Class>[] getJdbcColumnTypes()
throws SQLException {
PreparedStatement stmt = connection.prepareStatement(
"SELECT * FROM " + table + " WHERE 1 = 0"); //$NON-NLS-1$ //$NON-NLS-2$
ResultSetMetaData metadata = stmt.getMetaData();
int colCount = metadata.getColumnCount();
Class[] types = new Class[colCount];
for (int colIndex = 0; colIndex < colCount; colIndex++) {
int sqlType = metadata.getColumnType(colIndex + 1);
Class> type = null;
switch (sqlType) {
case Types.TINYINT:
type = Byte.class;
break;
case Types.SMALLINT:
type = Short.class;
break;
case Types.INTEGER:
type = Integer.class;
break;
case Types.BIGINT:
type = Long.class;
break;
case Types.REAL:
type = Float.class;
break;
case Types.FLOAT:
case Types.DOUBLE:
type = Double.class;
break;
case Types.DATE:
type = Date.class;
break;
case Types.TIME:
type = Time.class;
break;
case Types.TIMESTAMP:
type = Timestamp.class;
break;
case Types.CHAR:
case Types.NCHAR:
case Types.VARCHAR:
case Types.LONGVARCHAR:
case Types.NVARCHAR:
case Types.LONGNVARCHAR:
type = String.class;
default:
break;
}
types[colIndex] = type;
}
return (Class>[]) types;
}
/**
* Converts a value of a JDBC {@code ResultSet} to a Java compatible
* data value. If the data type is unknown {@code null} will be
* returned.
* @param row ResultSet object.
* @param col Column.
* @return Converted value.
* @throws SQLException if an error occurs during conversion or accessing
* the result set.
*/
private Comparable jdbcToJavaValue(ResultSet row, int col) throws SQLException {
// TODO Add getColumn(int).getType() method to Column
// AbstractDataSource.getColumnTypes() makes a defensive copy.
Class> colType = getColumnTypes()[col];
int sqlCol = col + 1;
if (Byte.class.equals(colType)) {
return row.getByte(sqlCol);
} else if (Short.class.equals(colType)) {
return row.getShort(sqlCol);
} else if (Integer.class.equals(colType)) {
return row.getInt(sqlCol);
} else if (Long.class.equals(colType)) {
return row.getLong(sqlCol);
} else if (Float.class.equals(colType)) {
return row.getFloat(sqlCol);
} else if (Double.class.equals(colType)) {
return row.getDouble(sqlCol);
} else if (Date.class.equals(colType)) {
return row.getDate(sqlCol);
} else if (Time.class.equals(colType)) {
return row.getTime(sqlCol);
} else if (Timestamp.class.equals(colType)) {
return row.getTimestamp(sqlCol);
} else if (String.class.equals(colType)) {
return row.getString(sqlCol);
} else {
return null;
}
}
/**
* Returns whether this data source is buffered.
* @return {@code true} when this object uses buffering,
* {@code false} otherwise
*/
public boolean isBuffered() {
return buffered;
}
/**
* Determines whether this data source should buffer intermediate results.
* This implies that the data doesn't change during access.
* @param buffered {@code true} when this object should use buffering,
* {@code false} otherwise
*/
public void setBuffered(boolean buffered) {
this.buffered = buffered;
this.bufferedRowCount = -1;
this.bufferedQuery = null;
this.bufferedQueryRow = -1;
}
/**
* Custom serialization method.
* @param out Output stream.
* @throws ClassNotFoundException if a deserialized class does not exist.
* @throws IOException if there is an error while writing data to the
* output stream.
*/
private void writeObject(ObjectOutputStream out)
throws ClassNotFoundException, IOException {
throw new UnsupportedOperationException("JDBC data sources cannot be serialized.");
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/MutableDataSource.java 0000664 0000000 0000000 00000006574 12670607251 0030022 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.util.Collection;
import de.erichseifert.gral.data.comparators.DataComparator;
/**
*
Interface for write access to tabular data. The access includes adding,
* modifying, and deleting of the data.
*
All data can be sorted row-wise with the method
* {@code sort(DataComparator...)}. For example, this way column 1 could be
* sorted ascending and column 3 descending.
*
* @see DataSource
*/
public interface MutableDataSource extends DataSource {
/**
* Adds a row with the specified comparable values. The values are added in
* the order they are specified. If the types of the data sink columns and
* the values do not match, an {@code IllegalArgumentException} is thrown.
* @param values values to be added as a row.
* @return Index of the row that has been added.
*/
int add(Comparable... values);
/**
* Adds a row with the specified container's elements to the data sink. The
* values are added in the order they are specified. If the types of the
* data sink columns and the values do not match, an
* {@code IllegalArgumentException} is thrown.
* @param values values to be added as a row.
* @return Index of the row that has been added.
*/
int add(Collection> values);
/**
* Adds the specified row to the data sink. The values are added in the
* order they are specified. If the types of the data sink columns and the
* values do not match, an {@code IllegalArgumentException} is thrown.
* @param row Row to be added.
* @return Index of the row that has been added.
*/
int add(Row row);
/**
* Removes a specified row from the data sink.
* @param row Index of the row to remove.
*/
void remove(int row);
/**
* Removes the last row from the data sink.
*/
void removeLast();
/**
* Deletes all rows this data sink contains.
*/
void clear();
/**
* Sets the value of a cell specified by its column and row indexes.
* @param Data type of the cell.
* @param col Column of the cell to change.
* @param row Row of the cell to change.
* @param value New value to be set.
* @return Old value that was replaced.
*/
Comparable set(int col, int row, Comparable value);
/**
* Sorts the data sink rows with the specified sorting rules. The row
* values are compared in the way the comparators are specified.
* @param comparators Comparators used for sorting.
*/
void sort(final DataComparator... comparators);
/**
* Sets the name of this series.
* @param name name to be set
*/
void setName(String name);
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/Row.java 0000664 0000000 0000000 00000004225 12670607251 0025214 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import de.erichseifert.gral.graphics.Orientation;
/**
*
Class for easily accessing a row of a data source.
*
*
Example:
*
* Row row = new Row(data, 2);
* Number value = row.get(3);
*
*
* @see DataSource
*/
public class Row extends DataAccessor {
/** Version id for serialization. */
private static final long serialVersionUID = 2725146484866525573L;
/**
* Initializes a new instances with the specified data source and
* row index.
* @param source Data source.
* @param row Row index.
*/
public Row(DataSource source, int row) {
super(source, row);
}
@Override
public Comparable get(int col) {
DataSource source = getSource();
if (source == null) {
return null;
}
return source.get(col, getIndex());
}
@Override
public int size() {
return getSource().getColumnCount();
}
@Override
public double getStatistics(String key) {
return getSource().getStatistics()
.get(key, Orientation.HORIZONTAL, getIndex());
}
/**
* Returns whether the column at the specified index contains numbers.
* @param columnIndex Index of the column to test.
* @return {@code true} if the column is numeric, otherwise {@code false}.
*/
public boolean isColumnNumeric(int columnIndex) {
return getSource().isColumnNumeric(columnIndex);
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/RowSubset.java 0000664 0000000 0000000 00000013403 12670607251 0026400 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.ArrayList;
import java.util.List;
/**
*
Abstract class that represents a view on several rows of a data source.
* Implementations must implement the method {@code accept(Row)} which
* decides whether a specific row should be contained in this filtered data
* source.
*/
public abstract class RowSubset extends AbstractDataSource
implements DataListener {
/** Version id for serialization. */
private static final long serialVersionUID = -5396152732545986903L;
/** Original data source. */
private final DataSource original;
/** List of row indexes that are stored in this filtered data source. */
private transient List accepted;
/**
* Creates a new instance with the specified data source.
* @param original DataSource to be filtered.
*/
@SuppressWarnings("unchecked")
public RowSubset(DataSource original) {
accepted = new ArrayList();
this.original = original;
this.original.addDataListener(this);
dataUpdated(this.original);
}
@Override
public Row getRow(int row) {
int rowOrig = accepted.get(row);
return original.getRow(rowOrig);
}
/**
* Returns the row with the specified index.
* @param col index of the column to return
* @param row index of the row to return
* @return the specified value of the data cell
*/
public Comparable get(int col, int row) {
int rowOrig = accepted.get(row);
return original.get(col, rowOrig);
}
@Override
public int getColumnCount() {
return original.getColumnCount();
}
/**
* Returns the number of rows of the data source.
* @return number of rows in the data source.
*/
public int getRowCount() {
return accepted.size();
}
@Override
public Class>[] getColumnTypes() {
return original.getColumnTypes();
}
/**
* Method that is invoked when data has been added.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been added.
*/
public void dataAdded(DataSource source, DataChangeEvent... events) {
dataChanged(source, events);
notifyDataAdded(events);
}
/**
* Method that is invoked when data has been updated.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been added
*/
public void dataUpdated(DataSource source, DataChangeEvent... events) {
dataChanged(source, events);
notifyDataUpdated(events);
}
/**
* Method that is invoked when data has been removed.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been removed.
*/
public void dataRemoved(DataSource source, DataChangeEvent... events) {
dataChanged(source, events);
notifyDataRemoved(events);
}
/**
* Method that is invoked when data has been added, updated, or removed.
* This method is invoked by objects that provide support for
* {@code DataListener}s and should not be called manually.
* @param source Data source that has been changed.
* @param events Optional event object describing the data values that
* have been changed.
*/
private void dataChanged(DataSource source, DataChangeEvent... events) {
update();
}
/**
* Updates the list of accepted rows.
*/
private void update() {
accepted.clear();
for (int rowIndex = 0; rowIndex < original.getRowCount(); rowIndex++) {
Row row = original.getRow(rowIndex);
if (accept(row)) {
accepted.add(rowIndex);
}
}
}
/**
* Tests whether the specified row is accepted by this DataSubset or not.
* @param row Row to be tested.
* @return True if the row should be kept.
*/
public abstract boolean accept(Row row);
/**
* Custom deserialization method.
* @param in Input stream.
* @throws ClassNotFoundException if a serialized class doesn't exist anymore.
* @throws IOException if there is an error while reading data from the
* input stream.
*/
private void readObject(ObjectInputStream in)
throws ClassNotFoundException, IOException {
// Normal deserialization
in.defaultReadObject();
// Handle transient fields
accepted = new ArrayList();
// Update caches
dataUpdated(original);
// Restore listeners
original.addDataListener(this);
}
}
gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/comparators/ 0000775 0000000 0000000 00000000000 12670607251 0026131 5 ustar 00root root 0000000 0000000 gral-0.11/gral-core/src/main/java/de/erichseifert/gral/data/comparators/Ascending.java 0000664 0000000 0000000 00000005065 12670607251 0030675 0 ustar 00root root 0000000 0000000 /*
* GRAL: GRAphing Library for Java(R)
*
* (C) Copyright 2009-2015 Erich Seifert ,
* Michael Seifert
*
* This file is part of GRAL.
*
* GRAL is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRAL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GRAL. If not, see .
*/
package de.erichseifert.gral.data.comparators;
/**
* Class that represents a {@code DataComparator} for comparing two arrays of
* column values at a defined index for ascending order.
* @see de.erichseifert.gral.data.DataTable#sort(DataComparator...)
*/
public class Ascending extends DataComparator {
/** Version id for serialization. */
private static final long serialVersionUID = -5206241300478408303L;
/**
* Creates a new Ascending object for sorting according to the specified
* column.
* @param col Column index to be compared.
*/
public Ascending(int col) {
super(col);
}
/**
*
Compares the values of two rows at the specified column for order and
* returns a corresponding integer:
*
*
a negative value means {@code row1} is smaller than {@code row2}
*
0 means {@code row1} is equal to {@code row2}
*
a positive value means {@code row1} is larger than {@code row2}
*
* @param row1 First value
* @param row2 Second value
* @return An integer number describing the order:
* a negative value if {@code row1} is smaller than {@code row2},
* 0 if {@code row1} is equal to {@code row2},
* a positive value if {@code row1} is larger than {@code row2},
*/
@SuppressWarnings("unchecked")
public int compare(Comparable[] row1, Comparable[] row2) {
Comparable