net.sf.jasperreports.compilers.GroovyDirectExpressionValueFilter Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.compilers;
import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation;
/**
* @author Lucian Chirita ([email protected])
*/
public class GroovyDirectExpressionValueFilter implements DirectExpressionValueFilter
{
private static final GroovyDirectExpressionValueFilter INSTANCE = new GroovyDirectExpressionValueFilter();
public static final GroovyDirectExpressionValueFilter instance()
{
return INSTANCE;
}
@Override
public Object filterValue(Object value, Class expectedType)
{
Object filterValue;
if (expectedType == null)
{
filterValue = value;
}
else
{
//Groovy expressions cast parameter/field/variable values to the declared type,
//doing the same here
filterValue = DefaultTypeTransformation.castToType(value, expectedType);
}
return filterValue;
}
}