Source Code Cross Referenced for DefaultIntervalCategoryDataset.java in  » Chart » jfreechart » org » jfree » data » category » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.data.category 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ===========================================================
002:         * JFreeChart : a free chart library for the Java(tm) platform
003:         * ===========================================================
004:         *
005:         * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006:         *
007:         * Project Info:  http://www.jfree.org/jfreechart/index.html
008:         *
009:         * This library is free software; you can redistribute it and/or modify it 
010:         * under the terms of the GNU Lesser General Public License as published by 
011:         * the Free Software Foundation; either version 2.1 of the License, or 
012:         * (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful, but 
015:         * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016:         * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017:         * License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser General Public
020:         * License along with this library; if not, write to the Free Software
021:         * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022:         * USA.  
023:         *
024:         * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025:         * in the United States and other countries.]
026:         *
027:         * -----------------------------------
028:         * DefaultIntervalCategoryDataset.java
029:         * -----------------------------------
030:         * (C) Copyright 2002-2007, by Jeremy Bowman and Contributors.
031:         *
032:         * Original Author:  Jeremy Bowman;
033:         * Contributor(s):   David Gilbert (for Object Refinery Limited);
034:         *
035:         * $Id: DefaultIntervalCategoryDataset.java,v 1.9.2.5 2007/03/09 15:50:23 mungady Exp $
036:         *
037:         * Changes
038:         * -------
039:         * 29-Apr-2002 : Version 1, contributed by Jeremy Bowman (DG);
040:         * 24-Oct-2002 : Amendments for changes made to the dataset interface (DG);
041:         * ------------- JFREECHART 1.0.x ---------------------------------------------
042:         * 08-Mar-2007 : Added equals() and clone() overrides (DG);
043:         *
044:         */
045:
046:        package org.jfree.data.category;
047:
048:        import java.util.ArrayList;
049:        import java.util.Arrays;
050:        import java.util.Collections;
051:        import java.util.List;
052:        import java.util.ResourceBundle;
053:
054:        import org.jfree.data.DataUtilities;
055:        import org.jfree.data.UnknownKeyException;
056:        import org.jfree.data.general.AbstractSeriesDataset;
057:
058:        /**
059:         * A convenience class that provides a default implementation of the
060:         * {@link IntervalCategoryDataset} interface.
061:         * <p>
062:         * The standard constructor accepts data in a two dimensional array where the
063:         * first dimension is the series, and the second dimension is the category.
064:         */
065:        public class DefaultIntervalCategoryDataset extends
066:                AbstractSeriesDataset implements  IntervalCategoryDataset {
067:
068:            /** The series keys. */
069:            private Comparable[] seriesKeys;
070:
071:            /** The category keys. */
072:            private Comparable[] categoryKeys;
073:
074:            /** Storage for the start value data. */
075:            private Number[][] startData;
076:
077:            /** Storage for the end value data. */
078:            private Number[][] endData;
079:
080:            /**
081:             * Creates a new dataset.
082:             *
083:             * @param starts  the starting values for the intervals.
084:             * @param ends  the ending values for the intervals.
085:             */
086:            public DefaultIntervalCategoryDataset(double[][] starts,
087:                    double[][] ends) {
088:                this (DataUtilities.createNumberArray2D(starts), DataUtilities
089:                        .createNumberArray2D(ends));
090:            }
091:
092:            /**
093:             * Constructs a dataset and populates it with data from the array.
094:             * <p>
095:             * The arrays are indexed as data[series][category].  Series and category
096:             * names are automatically generated - you can change them using the
097:             * {@link #setSeriesKeys(Comparable[])} and 
098:             * {@link #setCategoryKeys(Comparable[])} methods.
099:             *
100:             * @param starts  the start values data.
101:             * @param ends  the end values data.
102:             */
103:            public DefaultIntervalCategoryDataset(Number[][] starts,
104:                    Number[][] ends) {
105:                this (null, null, starts, ends);
106:            }
107:
108:            /**
109:             * Constructs a DefaultIntervalCategoryDataset, populates it with data
110:             * from the arrays, and uses the supplied names for the series.
111:             * <p>
112:             * Category names are generated automatically ("Category 1", "Category 2",
113:             * etc).
114:             *
115:             * @param seriesNames  the series names.
116:             * @param starts  the start values data, indexed as data[series][category].
117:             * @param ends  the end values data, indexed as data[series][category].
118:             */
119:            public DefaultIntervalCategoryDataset(String[] seriesNames,
120:                    Number[][] starts, Number[][] ends) {
121:
122:                this (seriesNames, null, starts, ends);
123:
124:            }
125:
126:            /**
127:             * Constructs a DefaultIntervalCategoryDataset, populates it with data
128:             * from the arrays, and uses the supplied names for the series and the
129:             * supplied objects for the categories.
130:             *
131:             * @param seriesKeys the series keys.
132:             * @param categoryKeys  the categories.
133:             * @param starts  the start values data, indexed as data[series][category].
134:             * @param ends  the end values data, indexed as data[series][category].
135:             */
136:            public DefaultIntervalCategoryDataset(Comparable[] seriesKeys,
137:                    Comparable[] categoryKeys, Number[][] starts,
138:                    Number[][] ends) {
139:
140:                this .startData = starts;
141:                this .endData = ends;
142:
143:                if (starts != null && ends != null) {
144:
145:                    String baseName = "org.jfree.data.resources.DataPackageResources";
146:                    ResourceBundle resources = ResourceBundle
147:                            .getBundle(baseName);
148:
149:                    int seriesCount = starts.length;
150:                    if (seriesCount != ends.length) {
151:                        String errMsg = "DefaultIntervalCategoryDataset: the number "
152:                                + "of series in the start value dataset does "
153:                                + "not match the number of series in the end "
154:                                + "value dataset.";
155:                        throw new IllegalArgumentException(errMsg);
156:                    }
157:                    if (seriesCount > 0) {
158:
159:                        // set up the series names...
160:                        if (seriesKeys != null) {
161:
162:                            if (seriesKeys.length != seriesCount) {
163:                                throw new IllegalArgumentException(
164:                                        "The number of series keys does not "
165:                                                + "match the number of series in the data.");
166:                            }
167:
168:                            this .seriesKeys = seriesKeys;
169:                        } else {
170:                            String prefix = resources
171:                                    .getString("series.default-prefix")
172:                                    + " ";
173:                            this .seriesKeys = generateKeys(seriesCount, prefix);
174:                        }
175:
176:                        // set up the category names...
177:                        int categoryCount = starts[0].length;
178:                        if (categoryCount != ends[0].length) {
179:                            String errMsg = "DefaultIntervalCategoryDataset: the "
180:                                    + "number of categories in the start value "
181:                                    + "dataset does not match the number of "
182:                                    + "categories in the end value dataset.";
183:                            throw new IllegalArgumentException(errMsg);
184:                        }
185:                        if (categoryKeys != null) {
186:                            if (categoryKeys.length != categoryCount) {
187:                                throw new IllegalArgumentException(
188:                                        "The number of category keys does not match "
189:                                                + "the number of categories in the data.");
190:                            }
191:                            this .categoryKeys = categoryKeys;
192:                        } else {
193:                            String prefix = resources
194:                                    .getString("categories.default-prefix")
195:                                    + " ";
196:                            this .categoryKeys = generateKeys(categoryCount,
197:                                    prefix);
198:                        }
199:
200:                    } else {
201:                        this .seriesKeys = null;
202:                        this .categoryKeys = null;
203:                    }
204:                }
205:
206:            }
207:
208:            /**
209:             * Returns the number of series in the dataset (possibly zero).
210:             *
211:             * @return The number of series in the dataset.
212:             * 
213:             * @see #getRowCount()
214:             * @see #getCategoryCount()
215:             */
216:            public int getSeriesCount() {
217:                int result = 0;
218:                if (this .startData != null) {
219:                    result = this .startData.length;
220:                }
221:                return result;
222:            }
223:
224:            /**
225:             * Returns a series index.
226:             *
227:             * @param seriesKey  the series key.
228:             *
229:             * @return The series index.
230:             * 
231:             * @see #getRowIndex(Comparable)
232:             * @see #getSeriesKey(int)
233:             */
234:            public int getSeriesIndex(Comparable seriesKey) {
235:                int result = -1;
236:                for (int i = 0; i < this .seriesKeys.length; i++) {
237:                    if (seriesKey.equals(this .seriesKeys[i])) {
238:                        result = i;
239:                        break;
240:                    }
241:                }
242:                return result;
243:            }
244:
245:            /**
246:             * Returns the name of the specified series.
247:             *
248:             * @param series  the index of the required series (zero-based).
249:             *
250:             * @return The name of the specified series.
251:             * 
252:             * @see #getSeriesIndex(Comparable)
253:             */
254:            public Comparable getSeriesKey(int series) {
255:                if ((series >= getSeriesCount()) || (series < 0)) {
256:                    throw new IllegalArgumentException("No such series : "
257:                            + series);
258:                }
259:                return this .seriesKeys[series];
260:            }
261:
262:            /**
263:             * Sets the names of the series in the dataset.
264:             *
265:             * @param seriesKeys  the new keys (<code>null</code> not permitted, the 
266:             *         length of the array must match the number of series in the 
267:             *         dataset).
268:             *         
269:             * @see #setCategoryKeys(Comparable[])
270:             */
271:            public void setSeriesKeys(Comparable[] seriesKeys) {
272:                if (seriesKeys == null) {
273:                    throw new IllegalArgumentException(
274:                            "Null 'seriesKeys' argument.");
275:                }
276:                if (seriesKeys.length != getSeriesCount()) {
277:                    throw new IllegalArgumentException(
278:                            "The number of series keys does not match the data.");
279:                }
280:                this .seriesKeys = seriesKeys;
281:                fireDatasetChanged();
282:            }
283:
284:            /**
285:             * Returns the number of categories in the dataset.
286:             *
287:             * @return The number of categories in the dataset.
288:             * 
289:             * @see #getColumnCount()
290:             */
291:            public int getCategoryCount() {
292:                int result = 0;
293:                if (this .startData != null) {
294:                    if (getSeriesCount() > 0) {
295:                        result = this .startData[0].length;
296:                    }
297:                }
298:                return result;
299:            }
300:
301:            /**
302:             * Returns a list of the categories in the dataset.  This method supports 
303:             * the {@link CategoryDataset} interface.
304:             *
305:             * @return A list of the categories in the dataset.
306:             * 
307:             * @see #getRowKeys()
308:             */
309:            public List getColumnKeys() {
310:                // the CategoryDataset interface expects a list of categories, but
311:                // we've stored them in an array...
312:                if (this .categoryKeys == null) {
313:                    return new ArrayList();
314:                } else {
315:                    return Collections.unmodifiableList(Arrays
316:                            .asList(this .categoryKeys));
317:                }
318:            }
319:
320:            /**
321:             * Sets the categories for the dataset.
322:             *
323:             * @param categoryKeys  an array of objects representing the categories in 
324:             *                      the dataset.
325:             *                      
326:             * @see #getRowKeys()
327:             * @see #setSeriesKeys(Comparable[])
328:             */
329:            public void setCategoryKeys(Comparable[] categoryKeys) {
330:                if (categoryKeys == null) {
331:                    throw new IllegalArgumentException(
332:                            "Null 'categoryKeys' argument.");
333:                }
334:                if (categoryKeys.length != this .startData[0].length) {
335:                    throw new IllegalArgumentException(
336:                            "The number of categories does not match the data.");
337:                }
338:                for (int i = 0; i < categoryKeys.length; i++) {
339:                    if (categoryKeys[i] == null) {
340:                        throw new IllegalArgumentException(
341:                                "DefaultIntervalCategoryDataset.setCategoryKeys(): "
342:                                        + "null category not permitted.");
343:                    }
344:                }
345:                this .categoryKeys = categoryKeys;
346:                fireDatasetChanged();
347:            }
348:
349:            /**
350:             * Returns the data value for one category in a series.
351:             * <P>
352:             * This method is part of the CategoryDataset interface.  Not particularly
353:             * meaningful for this class...returns the end value.
354:             * 
355:             * @param series    The required series (zero based index).
356:             * @param category  The required category.
357:             * 
358:             * @return The data value for one category in a series (null possible).
359:             * 
360:             * @see #getEndValue(Comparable, Comparable)
361:             */
362:            public Number getValue(Comparable series, Comparable category) {
363:                int seriesIndex = getSeriesIndex(series);
364:                if (seriesIndex < 0) {
365:                    throw new UnknownKeyException("Unknown 'series' key.");
366:                }
367:                int itemIndex = getColumnIndex(category);
368:                if (itemIndex < 0) {
369:                    throw new UnknownKeyException("Unknown 'category' key.");
370:                }
371:                return getValue(seriesIndex, itemIndex);
372:            }
373:
374:            /**
375:             * Returns the data value for one category in a series.
376:             * <P>
377:             * This method is part of the CategoryDataset interface.  Not particularly
378:             * meaningful for this class...returns the end value.
379:             *
380:             * @param series  the required series (zero based index).
381:             * @param category  the required category.
382:             *
383:             * @return The data value for one category in a series (null possible).
384:             * 
385:             * @see #getEndValue(int, int)
386:             */
387:            public Number getValue(int series, int category) {
388:                return getEndValue(series, category);
389:            }
390:
391:            /**
392:             * Returns the start data value for one category in a series.
393:             *
394:             * @param series  the required series.
395:             * @param category  the required category.
396:             *
397:             * @return The start data value for one category in a series 
398:             *         (possibly <code>null</code>).
399:             *         
400:             * @see #getStartValue(int, int)
401:             */
402:            public Number getStartValue(Comparable series, Comparable category) {
403:                int seriesIndex = getSeriesIndex(series);
404:                if (seriesIndex < 0) {
405:                    throw new UnknownKeyException("Unknown 'series' key.");
406:                }
407:                int itemIndex = getColumnIndex(category);
408:                if (itemIndex < 0) {
409:                    throw new UnknownKeyException("Unknown 'category' key.");
410:                }
411:                return getStartValue(seriesIndex, itemIndex);
412:            }
413:
414:            /**
415:             * Returns the start data value for one category in a series.
416:             *
417:             * @param series  the required series (zero based index).
418:             * @param category  the required category.
419:             *
420:             * @return The start data value for one category in a series 
421:             *         (possibly <code>null</code>).
422:             *         
423:             * @see #getStartValue(Comparable, Comparable)
424:             */
425:            public Number getStartValue(int series, int category) {
426:
427:                // check arguments...
428:                if ((series < 0) || (series >= getSeriesCount())) {
429:                    throw new IllegalArgumentException(
430:                            "DefaultIntervalCategoryDataset.getValue(): "
431:                                    + "series index out of range.");
432:                }
433:
434:                if ((category < 0) || (category >= getCategoryCount())) {
435:                    throw new IllegalArgumentException(
436:                            "DefaultIntervalCategoryDataset.getValue(): "
437:                                    + "category index out of range.");
438:                }
439:
440:                // fetch the value...
441:                return this .startData[series][category];
442:
443:            }
444:
445:            /**
446:             * Returns the end data value for one category in a series.
447:             *
448:             * @param series  the required series.
449:             * @param category  the required category.
450:             *
451:             * @return The end data value for one category in a series (null possible).
452:             * 
453:             * @see #getEndValue(int, int)
454:             */
455:            public Number getEndValue(Comparable series, Comparable category) {
456:                int seriesIndex = getSeriesIndex(series);
457:                if (seriesIndex < 0) {
458:                    throw new UnknownKeyException("Unknown 'series' key.");
459:                }
460:                int itemIndex = getColumnIndex(category);
461:                if (itemIndex < 0) {
462:                    throw new UnknownKeyException("Unknown 'category' key.");
463:                }
464:                return getEndValue(seriesIndex, itemIndex);
465:            }
466:
467:            /**
468:             * Returns the end data value for one category in a series.
469:             *
470:             * @param series  the required series (zero based index).
471:             * @param category  the required category.
472:             *
473:             * @return The end data value for one category in a series (null possible).
474:             * 
475:             * @see #getEndValue(Comparable, Comparable)
476:             */
477:            public Number getEndValue(int series, int category) {
478:                if ((series < 0) || (series >= getSeriesCount())) {
479:                    throw new IllegalArgumentException(
480:                            "DefaultIntervalCategoryDataset.getValue(): "
481:                                    + "series index out of range.");
482:                }
483:
484:                if ((category < 0) || (category >= getCategoryCount())) {
485:                    throw new IllegalArgumentException(
486:                            "DefaultIntervalCategoryDataset.getValue(): "
487:                                    + "category index out of range.");
488:                }
489:
490:                return this .endData[series][category];
491:            }
492:
493:            /**
494:             * Sets the start data value for one category in a series.
495:             * 
496:             * @param series  the series (zero-based index).
497:             * @param category  the category.
498:             * 
499:             * @param value The value.
500:             * 
501:             * @see #setEndValue(int, Comparable, Number)
502:             */
503:            public void setStartValue(int series, Comparable category,
504:                    Number value) {
505:
506:                // does the series exist?
507:                if ((series < 0) || (series > getSeriesCount() - 1)) {
508:                    throw new IllegalArgumentException(
509:                            "DefaultIntervalCategoryDataset.setValue: "
510:                                    + "series outside valid range.");
511:                }
512:
513:                // is the category valid?
514:                int categoryIndex = getCategoryIndex(category);
515:                if (categoryIndex < 0) {
516:                    throw new IllegalArgumentException(
517:                            "DefaultIntervalCategoryDataset.setValue: "
518:                                    + "unrecognised category.");
519:                }
520:
521:                // update the data...
522:                this .startData[series][categoryIndex] = value;
523:                fireDatasetChanged();
524:
525:            }
526:
527:            /**
528:             * Sets the end data value for one category in a series.
529:             *
530:             * @param series  the series (zero-based index).
531:             * @param category  the category.
532:             *
533:             * @param value the value.
534:             * 
535:             * @see #setStartValue(int, Comparable, Number)
536:             */
537:            public void setEndValue(int series, Comparable category,
538:                    Number value) {
539:
540:                // does the series exist?
541:                if ((series < 0) || (series > getSeriesCount() - 1)) {
542:                    throw new IllegalArgumentException(
543:                            "DefaultIntervalCategoryDataset.setValue: "
544:                                    + "series outside valid range.");
545:                }
546:
547:                // is the category valid?
548:                int categoryIndex = getCategoryIndex(category);
549:                if (categoryIndex < 0) {
550:                    throw new IllegalArgumentException(
551:                            "DefaultIntervalCategoryDataset.setValue: "
552:                                    + "unrecognised category.");
553:                }
554:
555:                // update the data...
556:                this .endData[series][categoryIndex] = value;
557:                fireDatasetChanged();
558:
559:            }
560:
561:            /**
562:             * Returns the index for the given category.
563:             *
564:             * @param category  the category (<code>null</code> not permitted).
565:             *
566:             * @return The index.
567:             * 
568:             * @see #getColumnIndex(Comparable)
569:             */
570:            public int getCategoryIndex(Comparable category) {
571:                int result = -1;
572:                for (int i = 0; i < this .categoryKeys.length; i++) {
573:                    if (category.equals(this .categoryKeys[i])) {
574:                        result = i;
575:                        break;
576:                    }
577:                }
578:                return result;
579:            }
580:
581:            /**
582:             * Generates an array of keys, by appending a space plus an integer
583:             * (starting with 1) to the supplied prefix string.
584:             *
585:             * @param count  the number of keys required.
586:             * @param prefix  the name prefix.
587:             *
588:             * @return An array of <i>prefixN</i> with N = { 1 .. count}.
589:             */
590:            private Comparable[] generateKeys(int count, String prefix) {
591:                Comparable[] result = new Comparable[count];
592:                String name;
593:                for (int i = 0; i < count; i++) {
594:                    name = prefix + (i + 1);
595:                    result[i] = name;
596:                }
597:                return result;
598:            }
599:
600:            /**
601:             * Returns a column key.
602:             *
603:             * @param column  the column index.
604:             *
605:             * @return The column key.
606:             * 
607:             * @see #getRowKey(int)
608:             */
609:            public Comparable getColumnKey(int column) {
610:                return this .categoryKeys[column];
611:            }
612:
613:            /**
614:             * Returns a column index.
615:             *
616:             * @param columnKey  the column key (<code>null</code> not permitted).
617:             *
618:             * @return The column index.
619:             * 
620:             * @see #getCategoryIndex(Comparable)
621:             */
622:            public int getColumnIndex(Comparable columnKey) {
623:                if (columnKey == null) {
624:                    throw new IllegalArgumentException(
625:                            "Null 'columnKey' argument.");
626:                }
627:                return getCategoryIndex(columnKey);
628:            }
629:
630:            /**
631:             * Returns a row index.
632:             *
633:             * @param rowKey  the row key.
634:             *
635:             * @return The row index.
636:             * 
637:             * @see #getSeriesIndex(Comparable)
638:             */
639:            public int getRowIndex(Comparable rowKey) {
640:                return getSeriesIndex(rowKey);
641:            }
642:
643:            /**
644:             * Returns a list of the series in the dataset.  This method supports the 
645:             * {@link CategoryDataset} interface.
646:             *
647:             * @return A list of the series in the dataset.
648:             * 
649:             * @see #getColumnKeys()
650:             */
651:            public List getRowKeys() {
652:                // the CategoryDataset interface expects a list of series, but
653:                // we've stored them in an array...
654:                if (this .seriesKeys == null) {
655:                    return new java.util.ArrayList();
656:                } else {
657:                    return Collections.unmodifiableList(Arrays
658:                            .asList(this .seriesKeys));
659:                }
660:            }
661:
662:            /**
663:             * Returns the name of the specified series.
664:             *
665:             * @param row  the index of the required row/series (zero-based).
666:             *
667:             * @return The name of the specified series.
668:             * 
669:             * @see #getColumnKey(int)
670:             */
671:            public Comparable getRowKey(int row) {
672:                if ((row >= getRowCount()) || (row < 0)) {
673:                    throw new IllegalArgumentException(
674:                            "The 'row' argument is out of bounds.");
675:                }
676:                return this .seriesKeys[row];
677:            }
678:
679:            /**
680:             * Returns the number of categories in the dataset.  This method is part of 
681:             * the {@link CategoryDataset} interface.
682:             *
683:             * @return The number of categories in the dataset.
684:             * 
685:             * @see #getCategoryCount()
686:             * @see #getRowCount()
687:             */
688:            public int getColumnCount() {
689:                return this .categoryKeys.length;
690:            }
691:
692:            /**
693:             * Returns the number of series in the dataset (possibly zero).
694:             *
695:             * @return The number of series in the dataset.
696:             * 
697:             * @see #getSeriesCount()
698:             * @see #getColumnCount()
699:             */
700:            public int getRowCount() {
701:                return this .seriesKeys.length;
702:            }
703:
704:            /**
705:             * Tests this dataset for equality with an arbitrary object.
706:             * 
707:             * @param obj  the object (<code>null</code> permitted).
708:             * 
709:             * @return A boolean.
710:             */
711:            public boolean equals(Object obj) {
712:                if (obj == this ) {
713:                    return true;
714:                }
715:                if (!(obj instanceof  DefaultIntervalCategoryDataset)) {
716:                    return false;
717:                }
718:                DefaultIntervalCategoryDataset that = (DefaultIntervalCategoryDataset) obj;
719:                if (!Arrays.equals(this .seriesKeys, that.seriesKeys)) {
720:                    return false;
721:                }
722:                if (!Arrays.equals(this .categoryKeys, that.categoryKeys)) {
723:                    return false;
724:                }
725:                if (!equal(this .startData, that.startData)) {
726:                    return false;
727:                }
728:                if (!equal(this .endData, that.endData)) {
729:                    return false;
730:                }
731:                // seem to be the same...
732:                return true;
733:            }
734:
735:            /**
736:             * Returns a clone of this dataset.
737:             * 
738:             * @return A clone.
739:             * 
740:             * @throws CloneNotSupportedException if there is a problem cloning the
741:             *         dataset.
742:             */
743:            public Object clone() throws CloneNotSupportedException {
744:                DefaultIntervalCategoryDataset clone = (DefaultIntervalCategoryDataset) super 
745:                        .clone();
746:                clone.categoryKeys = (Comparable[]) this .categoryKeys.clone();
747:                clone.seriesKeys = (Comparable[]) this .seriesKeys.clone();
748:                clone.startData = clone(this .startData);
749:                clone.endData = clone(this .endData);
750:                return clone;
751:            }
752:
753:            /**
754:             * Tests two double[][] arrays for equality.
755:             * 
756:             * @param array1  the first array (<code>null</code> permitted).
757:             * @param array2  the second arrray (<code>null</code> permitted).
758:             * 
759:             * @return A boolean.
760:             */
761:            private static boolean equal(Number[][] array1, Number[][] array2) {
762:                if (array1 == null) {
763:                    return (array2 == null);
764:                }
765:                if (array2 == null) {
766:                    return false;
767:                }
768:                if (array1.length != array2.length) {
769:                    return false;
770:                }
771:                for (int i = 0; i < array1.length; i++) {
772:                    if (!Arrays.equals(array1[i], array2[i])) {
773:                        return false;
774:                    }
775:                }
776:                return true;
777:            }
778:
779:            /**
780:             * Clones a two dimensional array of <code>Number</code> objects.
781:             * 
782:             * @param array  the array (<code>null</code> not permitted).
783:             * 
784:             * @return A clone of the array.
785:             */
786:            private static Number[][] clone(Number[][] array) {
787:                if (array == null) {
788:                    throw new IllegalArgumentException("Null 'array' argument.");
789:                }
790:                Number[][] result = new Number[array.length][];
791:                for (int i = 0; i < array.length; i++) {
792:                    Number[] child = array[i];
793:                    Number[] copychild = new Number[child.length];
794:                    System.arraycopy(child, 0, copychild, 0, child.length);
795:                    result[i] = copychild;
796:                }
797:                return result;
798:            }
799:
800:            /**
801:             * Returns a list of the series in the dataset.
802:             *
803:             * @return A list of the series in the dataset.
804:             * 
805:             * @deprecated Use {@link #getRowKeys()} instead.
806:             */
807:            public List getSeries() {
808:                if (this .seriesKeys == null) {
809:                    return new java.util.ArrayList();
810:                } else {
811:                    return Collections.unmodifiableList(Arrays
812:                            .asList(this .seriesKeys));
813:                }
814:            }
815:
816:            /**
817:             * Returns a list of the categories in the dataset.
818:             *
819:             * @return A list of the categories in the dataset.
820:             * 
821:             * @deprecated Use {@link #getColumnKeys()} instead.
822:             */
823:            public List getCategories() {
824:                return getColumnKeys();
825:            }
826:
827:            /**
828:             * Returns the item count.
829:             *
830:             * @return The item count.
831:             * 
832:             * @deprecated Use {@link #getCategoryCount()} instead.
833:             */
834:            public int getItemCount() {
835:                return this.categoryKeys.length;
836:            }
837:
838:        }
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