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1
13 package org.pentaho.plugin.jfreereport.reportcharts;
14
15 import org.jfree.chart.ChartFactory;
16 import org.jfree.chart.JFreeChart;
17 import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
18 import org.jfree.chart.plot.PiePlot;
19 import org.jfree.chart.plot.Plot;
20 import org.jfree.data.general.PieDataset;
21 import org.jfree.util.Log;
22 import org.jfree.util.Rotation;
23 import org.pentaho.core.session.IPentahoSession;
24 import org.pentaho.messages.Messages;
25
26 import java.lang.Number  ;
27
28 public class PieChartExpression extends AbstractChartExpression {
29
30 private static final long serialVersionUID = 5755617219149952355L;
31
32 private boolean rotationClockwise = true;
33
34 private String explodeSegment;
35
36 private Double explodePct;
37
38 private boolean ignoreNulls = true;
39
40 private boolean ignoreZeros = true;
41
42 private String pieLabelFormat = StandardPieSectionLabelGenerator.DEFAULT_SECTION_LABEL_FORMAT;
43
44 private boolean circular = true;
45
46 private String pieLegendLabelFormat = StandardPieSectionLabelGenerator.DEFAULT_SECTION_LABEL_FORMAT;
47
48 protected PieDataset pieDS;
49
50 public PieChartExpression() {
51 super();
52 }
53
54 protected PieChartExpression(IPentahoSession session) {
55 super(session);
56 }
57
58 public boolean isRotationClockwise() {
59 return rotationClockwise;
60 }
61
62 public void setRotationClockwise(boolean value) {
63 rotationClockwise = value;
64 }
65
66 public boolean isIgnoreNulls() {
67 return ignoreNulls;
68 }
69
70 public void setIgnoreNulls(boolean value) {
71 ignoreNulls = value;
72 }
73
74 public boolean isIgnoreZeros() {
75 return ignoreZeros;
76 }
77
78 public void setIgnoreZeros(boolean value) {
79 ignoreZeros = value;
80 }
81
82 public String getExplodeSegment() {
83 return explodeSegment;
84 }
85
86 public void setExplodeSegment(String value) {
87 explodeSegment = value;
88 }
89
90 public Double getExplodePct() {
91 return explodePct;
92 }
93
94 public void setExplodePct(Double value) {
95 explodePct = value;
96 }
97
98 public String getPieLabelFormat() {
99 return pieLabelFormat;
100 }
101
102 public void setPieLabelFormat(String value) {
103 pieLabelFormat = value;
104 }
105
106 public String getPieLegendLabelFormat() {
107 return pieLegendLabelFormat;
108 }
109
110 public void setPieLegendLabelFormat(String value) {
111 pieLegendLabelFormat = value;
112 }
113
114 public boolean getIsCircular() {
115 return circular;
116 }
117
118 public void setCircular(boolean value) {
119 circular = value;
120 }
121
122 public JFreeChart getChart(PieDataset pieDataset) {
123 pieDS = pieDataset;
124 JFreeChart rtn = null;
125 if (isThreeD()) {
126 rtn = ChartFactory.createPieChart3D(getTitle(), pieDataset, isShowLegend(), false, false);
127 } else {
128 rtn = ChartFactory.createPieChart(getTitle(), pieDataset, isShowLegend(), false, false);
129 }
130
131 return rtn;
132 }
133
134 public Object getValue() {
135 final Object maybePieDataset = getDataRow().get(getDataSource());
136 if (maybePieDataset instanceof PieDataset == false) {
137 Log.debug(Messages.getString("CATEGORICALCHARTEXPRESSION.USER_NOT_A_DATASET")); return null;
139 }
140
141 PieDataset pieDataset = (PieDataset) maybePieDataset;
142
143 final Integer row = new Integer (getRuntime().getCurrentRow());
144 final Object o = getChartFromCache(row);
145 JFreeChart chart = null;
146 if (o != null) {
147 chart = (JFreeChart) o;
148 } else {
149 chart = getChart(pieDataset);
150 putChartInCache(chart, row);
151 }
152
153 setChartProperties(chart);
154
155 return getValue(chart);
156 }
157
158 protected void setExplode(PiePlot pp) {
159 int explodeType = 0; if ("minValue".equals(explodeSegment)) { explodeType = 1;
162 } else if ("maxValue".equals(explodeSegment)) { explodeType = 2;
164 }
165 int actualSegment = 0;
166 if (explodeType == 0) {
167 try {
168 actualSegment = Integer.parseInt(explodeSegment);
169 pp.setExplodePercent(actualSegment, explodePct.doubleValue());
170 } catch (Exception ignored) {
171 }
172 return;
173 }
174 int minSegment = -1;
175 int maxSegment = -1;
176 Number minNum = new Double (Integer.MAX_VALUE);
177 Number maxNum = new Double (Integer.MIN_VALUE);
178 if (pieDS != null) {
180 int itemCount = pieDS.getItemCount();
181 for (int i = 0; i < itemCount; i++) {
182 Number nbr = pieDS.getValue(i);
183 if (nbr.doubleValue() > maxNum.doubleValue()) {
184 maxNum = nbr;
185 maxSegment = i;
186 }
187 if (nbr.doubleValue() < minNum.doubleValue()) {
188 minNum = nbr;
189 minSegment = i;
190 }
191 }
192 if ("minValue".equals(explodeSegment)) { pp.setExplodePercent(minSegment, explodePct.doubleValue());
194 } else {
195 pp.setExplodePercent(maxSegment, explodePct.doubleValue());
196 }
197 }
198
199 }
200
201 protected void setChartProperties(JFreeChart chart) {
202 super.setChartProperties(chart);
203 Plot plot = chart.getPlot();
204 PiePlot pp = (PiePlot) plot;
205 pp.setDirection(rotationClockwise ? Rotation.CLOCKWISE : Rotation.ANTICLOCKWISE);
206 if ((explodeSegment != null) && (explodePct != null)) {
207 setExplode(pp);
208 }
211 pp.setIgnoreNullValues(ignoreNulls);
212 pp.setIgnoreZeroValues(ignoreZeros);
213 if (!pieLabelFormat.equals(StandardPieSectionLabelGenerator.DEFAULT_SECTION_LABEL_FORMAT)) {
214 StandardPieSectionLabelGenerator labelGen = new StandardPieSectionLabelGenerator(pieLabelFormat);
215 pp.setLabelGenerator(labelGen);
216 }
217
218 if (!pieLegendLabelFormat.equals(StandardPieSectionLabelGenerator.DEFAULT_SECTION_LABEL_FORMAT)) {
219 StandardPieSectionLabelGenerator labelGen = new StandardPieSectionLabelGenerator(pieLegendLabelFormat);
220 pp.setLegendLabelGenerator(labelGen);
221 }
222
223 pp.setCircular(circular);
224 }
225
226 }
227 |
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