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org.jfree.report.expressions.sys

Class IsEmptyDataExpression

Implemented Interfaces:
Cloneable, Expression, Serializable
public class IsEmptyDataExpression
extends AbstractExpression
Creation-Date: 31.01.2006, 18:55:09
Author:
Thomas Morgner

Constructor Summary

IsEmptyDataExpression()

Method Summary

Object
computeValue()
Return the current expression value.

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

Constructor Details

IsEmptyDataExpression

public IsEmptyDataExpression()

Method Details

computeValue

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.

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