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Micro Distribution of the Payara Project for IBM JDK
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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*
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package org.glassfish.appclient.client.jws.boot;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.jar.JarFile;
/**
* Class Path manager for Java Web Start-aware ACC running under Java runtime 1.6.
*
* @author tjquinn
*/
public class ClassPathManager16 extends ClassPathManager {
/** Class object for the JNLPClassLoader class */
private Class jnlpClassLoaderClass;
/** Method object for the getJarFile method on JNLPClassLoader - only in 1.6 and later */
private Method getJarFileMethod;
/**
*Returns a new instance of the class path manager for use under Java 1.6
*@param loader the Java Web Start-provided class loader
*/
protected ClassPathManager16(ClassLoader loader, boolean keepJWSClassLoader) {
super(loader, keepJWSClassLoader);
try {
prepareIntrospectionInfo();
} catch (Throwable thr) {
throw new RuntimeException(thr);
}
}
/**
*Prepares the reflection-related private variables for later use in
*locating classes in JARs.
*@throws ClassNotFoundException if the JNLPClassLoader class cannot be found
*@throws NoSuchMethodException if the getJarFile method cannot be found
*/
private void prepareIntrospectionInfo() throws ClassNotFoundException, NoSuchMethodException {
jnlpClassLoaderClass = getJNLPClassLoader().loadClass("com.sun.jnlp.JNLPClassLoader");
getJarFileMethod = jnlpClassLoaderClass.getDeclaredMethod("getJarFile", URL.class);
getJarFileMethod.setAccessible(true);
}
public ClassLoader getParentClassLoader() {
return (keepJWSClassLoader() ? getJnlpClassLoader() : getJNLPClassLoader().getParent());
}
public File findContainingJar(URL resourceURL) throws IllegalArgumentException, URISyntaxException, MalformedURLException, IllegalAccessException, InvocationTargetException {
File result = null;
if (resourceURL != null) {
/*
*The URL will be similar to http://host:port/...path-in-server-namespace!resource-spec
*Extract the part preceding the ! and ask the Java Web Start loader to
*find the locally-cached JAR file corresponding to that part of the URL.
*/
URI resourceURI = resourceURL.toURI();
String ssp = resourceURI.getSchemeSpecificPart();
String jarOnlySSP = ssp.substring(0, ssp.indexOf('!'));
URL jarOnlyURL = new URL(jarOnlySSP).toURI().toURL();
/*
*Use introspection to invoke the method. This avoids complications
*in building the app server under Java 1.5 in which the JNLPClassLoader
*does not provide the getJarFile method.
*/
JarFile jarFile = (JarFile) getJarFileMethod.invoke(getJNLPClassLoader(), jarOnlyURL);
if (jarFile == null) {
throw new IllegalArgumentException(resourceURL.toExternalForm());
}
result = new File(jarFile.getName());
}
return result;
}
}
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