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hrmsEjb/net/sf/jasperreports/charts/fill/JRFillValueDataset.java

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+package net.sf.jasperreports.charts.fill;
+
+import net.sf.jasperreports.charts.JRValueDataset;
+import net.sf.jasperreports.engine.JRChartDataset;
+import net.sf.jasperreports.engine.JRExpression;
+import net.sf.jasperreports.engine.JRExpressionCollector;
+import net.sf.jasperreports.engine.design.JRVerifier;
+import net.sf.jasperreports.engine.fill.JRCalculator;
+import net.sf.jasperreports.engine.fill.JRExpressionEvalException;
+import net.sf.jasperreports.engine.fill.JRFillChartDataset;
+import net.sf.jasperreports.engine.fill.JRFillObjectFactory;
+import org.jfree.data.general.Dataset;
+import org.jfree.data.general.DefaultValueDataset;
+
+public class JRFillValueDataset extends JRFillChartDataset implements JRValueDataset {
+  private Number value = null;
+  
+  private DefaultValueDataset valueDataset = new DefaultValueDataset();
+  
+  public JRFillValueDataset(JRValueDataset valueDataset, JRFillObjectFactory factory) {
+    super((JRChartDataset)valueDataset, factory);
+  }
+  
+  public JRExpression getValueExpression() {
+    return ((JRValueDataset)this.parent).getValueExpression();
+  }
+  
+  protected void customInitialize() {
+    this.valueDataset = new DefaultValueDataset();
+  }
+  
+  protected void customEvaluate(JRCalculator calculator) throws JRExpressionEvalException {
+    this.value = (Number)calculator.evaluate(getValueExpression());
+  }
+  
+  protected void customIncrement() {
+    this.valueDataset.setValue(this.value);
+  }
+  
+  public Dataset getCustomDataset() {
+    return (Dataset)this.valueDataset;
+  }
+  
+  public byte getDatasetType() {
+    return 8;
+  }
+  
+  public void collectExpressions(JRExpressionCollector collector) {
+    collector.collect(this);
+  }
+  
+  public void validate(JRVerifier verifier) {
+    verifier.verify(this);
+  }
+}