27 lines
876 B
Java
27 lines
876 B
Java
package net.sf.jasperreports.engine.fill;
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class JRDoubleSumIncrementer extends JRAbstractExtendedIncrementer {
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private static JRDoubleSumIncrementer mainInstance = new JRDoubleSumIncrementer();
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public static JRDoubleSumIncrementer getInstance() {
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return mainInstance;
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}
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public Object increment(JRCalculable variable, Object expressionValue, AbstractValueProvider valueProvider) {
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Number value = (Number)variable.getIncrementedValue();
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Number newValue = (Number)expressionValue;
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if (newValue == null) {
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if (variable.isInitialized())
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return null;
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return value;
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}
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if (value == null || variable.isInitialized())
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value = JRDoubleIncrementerFactory.ZERO;
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return new Double(value.doubleValue() + newValue.doubleValue());
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}
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public Object initialValue() {
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return JRDoubleIncrementerFactory.ZERO;
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}
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}
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