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Summary: Nested | Field | Method | Constr | Detail: Nested | Field | Method | Constr |
java.lang.Object
org.jfree.report.expressions.AbstractExpression
org.jfree.report.expressions.sys.IsEmptyExpression
public class IsEmptyExpression
extends AbstractExpression
Constructor Summary | |
Method Summary | |
Object |
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Object |
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void |
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Methods inherited from class org.jfree.report.expressions.AbstractExpression | |
clone , getDataRow , getInstance , getName , getParentLocale , getReportConfiguration , getResourceBundleFactory , getRuntime , isDeepTraversing , isPrecompute , isPreserve , setDeepTraversing , setName , setPrecompute , setPreserve , setRuntime |
public Object computeValue() throws DataSourceException
Return the current expression value. The value depends (obviously) on the expression implementation.
- Specified by:
- computeValue in interface Expression
- Returns:
- the value of the function.