jfreechart example source code file (DefaultIntervalCategoryDataset.java)
The jfreechart DefaultIntervalCategoryDataset.java source code
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library 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 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -----------------------------------
* DefaultIntervalCategoryDataset.java
* -----------------------------------
* (C) Copyright 2002-2008, by Jeremy Bowman and Contributors.
*
* Original Author: Jeremy Bowman;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes
* -------
* 29-Apr-2002 : Version 1, contributed by Jeremy Bowman (DG);
* 24-Oct-2002 : Amendments for changes made to the dataset interface (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 08-Mar-2007 : Added equals() and clone() overrides (DG);
* 25-Feb-2008 : Fix for the special case where the dataset is empty, see bug
* 1897580 (DG)
* 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
* Jess Thrysoee (DG);
*
*/
package org.jfree.data.category;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.ResourceBundle;
import org.jfree.chart.util.ResourceBundleWrapper;
import org.jfree.data.DataUtilities;
import org.jfree.data.UnknownKeyException;
import org.jfree.data.general.AbstractSeriesDataset;
/**
* A convenience class that provides a default implementation of the
* {@link IntervalCategoryDataset} interface.
* <p>
* The standard constructor accepts data in a two dimensional array where the
* first dimension is the series, and the second dimension is the category.
*/
public class DefaultIntervalCategoryDataset extends AbstractSeriesDataset
implements IntervalCategoryDataset {
/** The series keys. */
private Comparable[] seriesKeys;
/** The category keys. */
private Comparable[] categoryKeys;
/** Storage for the start value data. */
private Number[][] startData;
/** Storage for the end value data. */
private Number[][] endData;
/**
* Creates a new dataset using the specified data values and automatically
* generated series and category keys.
*
* @param starts the starting values for the intervals (<code>null
* not permitted).
* @param ends the ending values for the intervals (<code>null not
* permitted).
*/
public DefaultIntervalCategoryDataset(double[][] starts, double[][] ends) {
this(DataUtilities.createNumberArray2D(starts),
DataUtilities.createNumberArray2D(ends));
}
/**
* Constructs a dataset and populates it with data from the array.
* <p>
* The arrays are indexed as data[series][category]. Series and category
* names are automatically generated - you can change them using the
* {@link #setSeriesKeys(Comparable[])} and
* {@link #setCategoryKeys(Comparable[])} methods.
*
* @param starts the start values data.
* @param ends the end values data.
*/
public DefaultIntervalCategoryDataset(Number[][] starts, Number[][] ends) {
this(null, null, starts, ends);
}
/**
* Constructs a DefaultIntervalCategoryDataset, populates it with data
* from the arrays, and uses the supplied names for the series.
* <p>
* Category names are generated automatically ("Category 1", "Category 2",
* etc).
*
* @param seriesNames the series names (if <code>null, series names
* will be generated automatically).
* @param starts the start values data, indexed as data[series][category].
* @param ends the end values data, indexed as data[series][category].
*/
public DefaultIntervalCategoryDataset(String[] seriesNames,
Number[][] starts,
Number[][] ends) {
this(seriesNames, null, starts, ends);
}
/**
* Constructs a DefaultIntervalCategoryDataset, populates it with data
* from the arrays, and uses the supplied names for the series and the
* supplied objects for the categories.
*
* @param seriesKeys the series keys (if <code>null, series keys
* will be generated automatically).
* @param categoryKeys the category keys (if <code>null, category
* keys will be generated automatically).
* @param starts the start values data, indexed as data[series][category].
* @param ends the end values data, indexed as data[series][category].
*/
public DefaultIntervalCategoryDataset(Comparable[] seriesKeys,
Comparable[] categoryKeys,
Number[][] starts,
Number[][] ends) {
this.startData = starts;
this.endData = ends;
if (starts != null && ends != null) {
String baseName = "org.jfree.data.resources.DataPackageResources";
ResourceBundle resources = ResourceBundleWrapper.getBundle(
baseName);
int seriesCount = starts.length;
if (seriesCount != ends.length) {
String errMsg = "DefaultIntervalCategoryDataset: the number "
+ "of series in the start value dataset does "
+ "not match the number of series in the end "
+ "value dataset.";
throw new IllegalArgumentException(errMsg);
}
if (seriesCount > 0) {
// set up the series names...
if (seriesKeys != null) {
if (seriesKeys.length != seriesCount) {
throw new IllegalArgumentException(
"The number of series keys does not "
+ "match the number of series in the data.");
}
this.seriesKeys = seriesKeys;
}
else {
String prefix = resources.getString(
"series.default-prefix") + " ";
this.seriesKeys = generateKeys(seriesCount, prefix);
}
// set up the category names...
int categoryCount = starts[0].length;
if (categoryCount != ends[0].length) {
String errMsg = "DefaultIntervalCategoryDataset: the "
+ "number of categories in the start value "
+ "dataset does not match the number of "
+ "categories in the end value dataset.";
throw new IllegalArgumentException(errMsg);
}
if (categoryKeys != null) {
if (categoryKeys.length != categoryCount) {
throw new IllegalArgumentException(
"The number of category keys does not match "
+ "the number of categories in the data.");
}
this.categoryKeys = categoryKeys;
}
else {
String prefix = resources.getString(
"categories.default-prefix") + " ";
this.categoryKeys = generateKeys(categoryCount, prefix);
}
}
else {
this.seriesKeys = new Comparable[0];
this.categoryKeys = new Comparable[0];
}
}
}
/**
* Returns the number of series in the dataset (possibly zero).
*
* @return The number of series in the dataset.
*
* @see #getRowCount()
* @see #getCategoryCount()
*/
public int getSeriesCount() {
int result = 0;
if (this.startData != null) {
result = this.startData.length;
}
return result;
}
/**
* Returns a series index.
*
* @param seriesKey the series key.
*
* @return The series index.
*
* @see #getRowIndex(Comparable)
* @see #getSeriesKey(int)
*/
public int getSeriesIndex(Comparable seriesKey) {
int result = -1;
for (int i = 0; i < this.seriesKeys.length; i++) {
if (seriesKey.equals(this.seriesKeys[i])) {
result = i;
break;
}
}
return result;
}
/**
* Returns the name of the specified series.
*
* @param series the index of the required series (zero-based).
*
* @return The name of the specified series.
*
* @see #getSeriesIndex(Comparable)
*/
public Comparable getSeriesKey(int series) {
if ((series >= getSeriesCount()) || (series < 0)) {
throw new IllegalArgumentException("No such series : " + series);
}
return this.seriesKeys[series];
}
/**
* Sets the names of the series in the dataset.
*
* @param seriesKeys the new keys (<code>null not permitted, the
* length of the array must match the number of series in the
* dataset).
*
* @see #setCategoryKeys(Comparable[])
*/
public void setSeriesKeys(Comparable[] seriesKeys) {
if (seriesKeys == null) {
throw new IllegalArgumentException("Null 'seriesKeys' argument.");
}
if (seriesKeys.length != getSeriesCount()) {
throw new IllegalArgumentException(
"The number of series keys does not match the data.");
}
this.seriesKeys = seriesKeys;
fireDatasetChanged();
}
/**
* Returns the number of categories in the dataset.
*
* @return The number of categories in the dataset.
*
* @see #getColumnCount()
*/
public int getCategoryCount() {
int result = 0;
if (this.startData != null) {
if (getSeriesCount() > 0) {
result = this.startData[0].length;
}
}
return result;
}
/**
* Returns a list of the categories in the dataset. This method supports
* the {@link CategoryDataset} interface.
*
* @return A list of the categories in the dataset.
*
* @see #getRowKeys()
*/
public List getColumnKeys() {
// the CategoryDataset interface expects a list of categories, but
// we've stored them in an array...
if (this.categoryKeys == null) {
return new ArrayList();
}
else {
return Collections.unmodifiableList(Arrays.asList(
this.categoryKeys));
}
}
/**
* Sets the categories for the dataset.
*
* @param categoryKeys an array of objects representing the categories in
* the dataset.
*
* @see #getRowKeys()
* @see #setSeriesKeys(Comparable[])
*/
public void setCategoryKeys(Comparable[] categoryKeys) {
if (categoryKeys == null) {
throw new IllegalArgumentException("Null 'categoryKeys' argument.");
}
if (categoryKeys.length != getCategoryCount()) {
throw new IllegalArgumentException(
"The number of categories does not match the data.");
}
for (int i = 0; i < categoryKeys.length; i++) {
if (categoryKeys[i] == null) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.setCategoryKeys(): "
+ "null category not permitted.");
}
}
this.categoryKeys = categoryKeys;
fireDatasetChanged();
}
/**
* Returns the data value for one category in a series.
* <P>
* This method is part of the CategoryDataset interface. Not particularly
* meaningful for this class...returns the end value.
*
* @param series The required series (zero based index).
* @param category The required category.
*
* @return The data value for one category in a series (null possible).
*
* @see #getEndValue(Comparable, Comparable)
*/
public Number getValue(Comparable series, Comparable category) {
int seriesIndex = getSeriesIndex(series);
if (seriesIndex < 0) {
throw new UnknownKeyException("Unknown 'series' key.");
}
int itemIndex = getColumnIndex(category);
if (itemIndex < 0) {
throw new UnknownKeyException("Unknown 'category' key.");
}
return getValue(seriesIndex, itemIndex);
}
/**
* Returns the data value for one category in a series.
* <P>
* This method is part of the CategoryDataset interface. Not particularly
* meaningful for this class...returns the end value.
*
* @param series the required series (zero based index).
* @param category the required category.
*
* @return The data value for one category in a series (null possible).
*
* @see #getEndValue(int, int)
*/
public Number getValue(int series, int category) {
return getEndValue(series, category);
}
/**
* Returns the start data value for one category in a series.
*
* @param series the required series.
* @param category the required category.
*
* @return The start data value for one category in a series
* (possibly <code>null).
*
* @see #getStartValue(int, int)
*/
public Number getStartValue(Comparable series, Comparable category) {
int seriesIndex = getSeriesIndex(series);
if (seriesIndex < 0) {
throw new UnknownKeyException("Unknown 'series' key.");
}
int itemIndex = getColumnIndex(category);
if (itemIndex < 0) {
throw new UnknownKeyException("Unknown 'category' key.");
}
return getStartValue(seriesIndex, itemIndex);
}
/**
* Returns the start data value for one category in a series.
*
* @param series the required series (zero based index).
* @param category the required category.
*
* @return The start data value for one category in a series
* (possibly <code>null).
*
* @see #getStartValue(Comparable, Comparable)
*/
public Number getStartValue(int series, int category) {
// check arguments...
if ((series < 0) || (series >= getSeriesCount())) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.getValue(): "
+ "series index out of range.");
}
if ((category < 0) || (category >= getCategoryCount())) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.getValue(): "
+ "category index out of range.");
}
// fetch the value...
return this.startData[series][category];
}
/**
* Returns the end data value for one category in a series.
*
* @param series the required series.
* @param category the required category.
*
* @return The end data value for one category in a series (null possible).
*
* @see #getEndValue(int, int)
*/
public Number getEndValue(Comparable series, Comparable category) {
int seriesIndex = getSeriesIndex(series);
if (seriesIndex < 0) {
throw new UnknownKeyException("Unknown 'series' key.");
}
int itemIndex = getColumnIndex(category);
if (itemIndex < 0) {
throw new UnknownKeyException("Unknown 'category' key.");
}
return getEndValue(seriesIndex, itemIndex);
}
/**
* Returns the end data value for one category in a series.
*
* @param series the required series (zero based index).
* @param category the required category.
*
* @return The end data value for one category in a series (null possible).
*
* @see #getEndValue(Comparable, Comparable)
*/
public Number getEndValue(int series, int category) {
if ((series < 0) || (series >= getSeriesCount())) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.getValue(): "
+ "series index out of range.");
}
if ((category < 0) || (category >= getCategoryCount())) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.getValue(): "
+ "category index out of range.");
}
return this.endData[series][category];
}
/**
* Sets the start data value for one category in a series.
*
* @param series the series (zero-based index).
* @param category the category.
*
* @param value The value.
*
* @see #setEndValue(int, Comparable, Number)
*/
public void setStartValue(int series, Comparable category, Number value) {
// does the series exist?
if ((series < 0) || (series > getSeriesCount() - 1)) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.setValue: "
+ "series outside valid range.");
}
// is the category valid?
int categoryIndex = getCategoryIndex(category);
if (categoryIndex < 0) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.setValue: "
+ "unrecognised category.");
}
// update the data...
this.startData[series][categoryIndex] = value;
fireDatasetChanged();
}
/**
* Sets the end data value for one category in a series.
*
* @param series the series (zero-based index).
* @param category the category.
*
* @param value the value.
*
* @see #setStartValue(int, Comparable, Number)
*/
public void setEndValue(int series, Comparable category, Number value) {
// does the series exist?
if ((series < 0) || (series > getSeriesCount() - 1)) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.setValue: "
+ "series outside valid range.");
}
// is the category valid?
int categoryIndex = getCategoryIndex(category);
if (categoryIndex < 0) {
throw new IllegalArgumentException(
"DefaultIntervalCategoryDataset.setValue: "
+ "unrecognised category.");
}
// update the data...
this.endData[series][categoryIndex] = value;
fireDatasetChanged();
}
/**
* Returns the index for the given category.
*
* @param category the category (<code>null not permitted).
*
* @return The index.
*
* @see #getColumnIndex(Comparable)
*/
public int getCategoryIndex(Comparable category) {
int result = -1;
for (int i = 0; i < this.categoryKeys.length; i++) {
if (category.equals(this.categoryKeys[i])) {
result = i;
break;
}
}
return result;
}
/**
* Generates an array of keys, by appending a space plus an integer
* (starting with 1) to the supplied prefix string.
*
* @param count the number of keys required.
* @param prefix the name prefix.
*
* @return An array of <i>prefixN with N = { 1 .. count}.
*/
private Comparable[] generateKeys(int count, String prefix) {
Comparable[] result = new Comparable[count];
String name;
for (int i = 0; i < count; i++) {
name = prefix + (i + 1);
result[i] = name;
}
return result;
}
/**
* Returns a column key.
*
* @param column the column index.
*
* @return The column key.
*
* @see #getRowKey(int)
*/
public Comparable getColumnKey(int column) {
return this.categoryKeys[column];
}
/**
* Returns a column index.
*
* @param columnKey the column key (<code>null not permitted).
*
* @return The column index.
*
* @see #getCategoryIndex(Comparable)
*/
public int getColumnIndex(Comparable columnKey) {
if (columnKey == null) {
throw new IllegalArgumentException("Null 'columnKey' argument.");
}
return getCategoryIndex(columnKey);
}
/**
* Returns a row index.
*
* @param rowKey the row key.
*
* @return The row index.
*
* @see #getSeriesIndex(Comparable)
*/
public int getRowIndex(Comparable rowKey) {
return getSeriesIndex(rowKey);
}
/**
* Returns a list of the series in the dataset. This method supports the
* {@link CategoryDataset} interface.
*
* @return A list of the series in the dataset.
*
* @see #getColumnKeys()
*/
public List getRowKeys() {
// the CategoryDataset interface expects a list of series, but
// we've stored them in an array...
if (this.seriesKeys == null) {
return new java.util.ArrayList();
}
else {
return Collections.unmodifiableList(Arrays.asList(this.seriesKeys));
}
}
/**
* Returns the name of the specified series.
*
* @param row the index of the required row/series (zero-based).
*
* @return The name of the specified series.
*
* @see #getColumnKey(int)
*/
public Comparable getRowKey(int row) {
if ((row >= getRowCount()) || (row < 0)) {
throw new IllegalArgumentException(
"The 'row' argument is out of bounds.");
}
return this.seriesKeys[row];
}
/**
* Returns the number of categories in the dataset. This method is part of
* the {@link CategoryDataset} interface.
*
* @return The number of categories in the dataset.
*
* @see #getCategoryCount()
* @see #getRowCount()
*/
public int getColumnCount() {
return this.categoryKeys.length;
}
/**
* Returns the number of series in the dataset (possibly zero).
*
* @return The number of series in the dataset.
*
* @see #getSeriesCount()
* @see #getColumnCount()
*/
public int getRowCount() {
return this.seriesKeys.length;
}
/**
* Tests this dataset for equality with an arbitrary object.
*
* @param obj the object (<code>null permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof DefaultIntervalCategoryDataset)) {
return false;
}
DefaultIntervalCategoryDataset that
= (DefaultIntervalCategoryDataset) obj;
if (!Arrays.equals(this.seriesKeys, that.seriesKeys)) {
return false;
}
if (!Arrays.equals(this.categoryKeys, that.categoryKeys)) {
return false;
}
if (!equal(this.startData, that.startData)) {
return false;
}
if (!equal(this.endData, that.endData)) {
return false;
}
// seem to be the same...
return true;
}
/**
* Returns a clone of this dataset.
*
* @return A clone.
*
* @throws CloneNotSupportedException if there is a problem cloning the
* dataset.
*/
public Object clone() throws CloneNotSupportedException {
DefaultIntervalCategoryDataset clone
= (DefaultIntervalCategoryDataset) super.clone();
clone.categoryKeys = (Comparable[]) this.categoryKeys.clone();
clone.seriesKeys = (Comparable[]) this.seriesKeys.clone();
clone.startData = clone(this.startData);
clone.endData = clone(this.endData);
return clone;
}
/**
* Tests two double[][] arrays for equality.
*
* @param array1 the first array (<code>null permitted).
* @param array2 the second arrray (<code>null permitted).
*
* @return A boolean.
*/
private static boolean equal(Number[][] array1, Number[][] array2) {
if (array1 == null) {
return (array2 == null);
}
if (array2 == null) {
return false;
}
if (array1.length != array2.length) {
return false;
}
for (int i = 0; i < array1.length; i++) {
if (!Arrays.equals(array1[i], array2[i])) {
return false;
}
}
return true;
}
/**
* Clones a two dimensional array of <code>Number objects.
*
* @param array the array (<code>null not permitted).
*
* @return A clone of the array.
*/
private static Number[][] clone(Number[][] array) {
if (array == null) {
throw new IllegalArgumentException("Null 'array' argument.");
}
Number[][] result = new Number[array.length][];
for (int i = 0; i < array.length; i++) {
Number[] child = array[i];
Number[] copychild = new Number[child.length];
System.arraycopy(child, 0, copychild, 0, child.length);
result[i] = copychild;
}
return result;
}
/**
* Returns a list of the series in the dataset.
*
* @return A list of the series in the dataset.
*
* @deprecated Use {@link #getRowKeys()} instead.
*/
public List getSeries() {
if (this.seriesKeys == null) {
return new java.util.ArrayList();
}
else {
return Collections.unmodifiableList(Arrays.asList(this.seriesKeys));
}
}
/**
* Returns a list of the categories in the dataset.
*
* @return A list of the categories in the dataset.
*
* @deprecated Use {@link #getColumnKeys()} instead.
*/
public List getCategories() {
return getColumnKeys();
}
/**
* Returns the item count.
*
* @return The item count.
*
* @deprecated Use {@link #getCategoryCount()} instead.
*/
public int getItemCount() {
return this.categoryKeys.length;
}
}
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