net.sf.jasperreports.data.AbstractClasspathAwareDataAdapterService 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.data;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.util.CompositeClassloader;
/**
* @author Teodor Danciu ([email protected])
*/
public abstract class AbstractClasspathAwareDataAdapterService extends AbstractDataAdapterService
{
public static final String CURRENT_CLASS_LOADER = "CURRENT_CLASS_LOADER";
/**
*
*/
public AbstractClasspathAwareDataAdapterService(JasperReportsContext jasperReportsContext, ClasspathAwareDataAdapter dataAdapter)
{
super(jasperReportsContext, dataAdapter);
}
/**
*
*/
protected ClassLoader getClassLoader(ClassLoader cloader)
{
Object obj = getJasperReportsContext().getValue(CURRENT_CLASS_LOADER);
if(obj != null && obj instanceof ClassLoader)
cloader = (ClassLoader)obj ;
URL[] localURLs = getPathClassloader();
if(localURLs == null || localURLs.length == 0)
return cloader;
return new CompositeClassloader(new URLClassLoader(localURLs), cloader);
}
protected URL[] getPathClassloader() {
ClasspathAwareDataAdapter dataAdapter = (ClasspathAwareDataAdapter)getDataAdapter();
List classpath = dataAdapter.getClasspath();
if(classpath.isEmpty())
return null;
List urls = new ArrayList();
for (String path : classpath)
{
if(path == null || path.isEmpty())
continue;
try {
if(path.startsWith("\\w+?://"))
urls.add( new URL(path));
else
urls.add( new URL("file", "", path));
} catch (MalformedURLException e) {
// e.printStackTrace();
// We don't care if the entry cannot be found.
}
}
if(urls.isEmpty())
return null;
return urls.toArray(new URL[urls.size()]) ;
}
}