28 lines
886 B
Java
28 lines
886 B
Java
package net.sf.jasperreports.engine.fill;
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class JRDefaultFirstIncrementer extends JRAbstractExtendedIncrementer {
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private static final JRDefaultFirstIncrementer instance = new JRDefaultFirstIncrementer();
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public static JRDefaultFirstIncrementer getInstance() {
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return instance;
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}
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public Object initialValue() {
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return null;
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}
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public Object combine(JRCalculable calculable, JRCalculable calculableValue, AbstractValueProvider valueProvider) {
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if (!calculable.isInitialized())
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return calculable.getValue();
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if (!calculableValue.isInitialized())
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return calculableValue.getValue();
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return null;
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}
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public Object increment(JRCalculable calculable, Object expressionValue, AbstractValueProvider valueProvider) {
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if (calculable.isInitialized())
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return expressionValue;
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return calculable.getIncrementedValue();
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}
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}
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