org.glassfish.javaee.full.deployment.EarLibClassLoader Maven / Gradle / Ivy
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// Portions Copyright [2016-2021] [Payara Foundation and/or its affiliates]
package org.glassfish.javaee.full.deployment;
import com.sun.enterprise.loader.ASURLClassLoader;
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import org.glassfish.common.util.InstanceCounter;
/**
* Classloader that is responsible to load the ear libraries (lib/*.jar etc)
*
*/
public class EarLibClassLoader extends ASURLClassLoader
{
private final InstanceCounter instanceCounter = new InstanceCounter(this);
public EarLibClassLoader(URL[] urls, ClassLoader classLoader) {
super(classLoader);
enableCurrentBeforeParent();
for (URL url : urls) {
super.addURL(url);
}
}
/**
* The below loads services from META-INF from the libraries,
* so we want to take these from the EAR libraries,
* this does similar to what WebappClassLoader does
*
* @param name
* @return set of resources URLSs
* @throws IOException
*/
@Override
public Enumeration getResources(String name) throws IOException {
Enumeration localResources = super.getResources(name);
Enumeration parentResources = getParent().getResources(name);
Enumeration combined = Collections.emptyEnumeration();
Enumeration combinedResources = currentBeforeParentEnabled?
combineEnumerations(localResources, parentResources):
combineEnumerations(parentResources, localResources);
return combinedResources;
}
private Enumeration combineEnumerations(Enumeration first, Enumeration second) {
List combinedList = new ArrayList<>();
while (first.hasMoreElements()) {
combinedList.add(first.nextElement());
}
while (second.hasMoreElements()) {
combinedList.add(second.nextElement());
}
return Collections.enumeration(combinedList);
}
@Override
protected String getClassLoaderName() {
return "EarLibClassLoader";
}
}