net.sf.jasperreports.compilers.JRBshCompiler Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 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 java.io.File;
import java.io.Serializable;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRReport;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.design.JRAbstractCompiler;
import net.sf.jasperreports.engine.design.JRCompilationSourceCode;
import net.sf.jasperreports.engine.design.JRCompilationUnit;
import net.sf.jasperreports.engine.design.JRDefaultCompilationSourceCode;
import net.sf.jasperreports.engine.design.JRSourceCompileTask;
import net.sf.jasperreports.engine.fill.JRCalculator;
import net.sf.jasperreports.engine.fill.JREvaluator;
/**
* @author Teodor Danciu ([email protected])
*/
public class JRBshCompiler extends JRAbstractCompiler
{
/**
* A constant used to specify that the language used by expressions is BeanShell script.
*/
public static final String LANGUAGE_BSH = "bsh";
/**
*
*/
public JRBshCompiler(JasperReportsContext jasperReportsContext)
{
super(jasperReportsContext, false);
}
@Override
protected JREvaluator loadEvaluator(Serializable compileData, String unitName) throws JRException
{
return new JRBshEvaluator((String) compileData);
}
@Override
protected void checkLanguage(String language) throws JRException
{
if (
!LANGUAGE_BSH.equals(language)
&& !JRReport.LANGUAGE_JAVA.equals(language)
)
{
throw
new JRException(
EXCEPTION_MESSAGE_KEY_LANGUAGE_NOT_SUPPORTED,
new Object[]{language, LANGUAGE_BSH, JRReport.LANGUAGE_JAVA});
}
}
@Override
protected JRCompilationSourceCode generateSourceCode(JRSourceCompileTask sourceTask) throws JRException
{
return new JRDefaultCompilationSourceCode(JRBshGenerator.generateScript(sourceTask), null);
}
@Override
protected String compileUnits(JRCompilationUnit[] units, String classpath, File tempDirFile) throws JRException
{
verifyScripts(units);
for (int i = 0; i < units.length; i++)
{
String script = units[i].getSourceCode();
units[i].setCompileData(script);
}
return null;
}
private void verifyScripts(JRCompilationUnit[] units) throws JRException
{
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
// trick for detecting the Ant class loader
try
{
classLoader.loadClass(JRCalculator.class.getName());
}
catch(ClassNotFoundException e)
{
classLoader = getClass().getClassLoader();
}
ClassLoader oldContextClassLoader = Thread.currentThread().getContextClassLoader();
try
{
Thread.currentThread().setContextClassLoader(classLoader);
for (int i = 0; i < units.length; i++)
{
String script = units[i].getSourceCode();
JRBshEvaluator bshEvaluator = new JRBshEvaluator(script);
bshEvaluator.verify(units[i].getExpressions());
}
}
finally
{
Thread.currentThread().setContextClassLoader(oldContextClassLoader);
}
}
@Override
protected String getSourceFileName(String unitName)
{
return unitName + ".bsh";
}
}