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/*******************************************************************************
* Copyright (c) 2001, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.j2ee.commonarchivecore.internal.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectStreamClass;
import java.io.StreamCorruptedException;
import java.lang.reflect.Array;
public class ObjectInputStreamCustomResolver extends java.io.ObjectInputStream {
private ClassLoader cl;
/**
* Constructor
*/
public ObjectInputStreamCustomResolver(InputStream is, ClassLoader loader) throws IOException, StreamCorruptedException {
super(is);
if (loader != null)
cl = loader;
}
/**
* Gets the java type class given a signature letter.
*/
private Class getType(char type) {
switch (type) {
case 'B' :
return byte.class;
case 'C' :
return char.class;
case 'D' :
return double.class;
case 'F' :
return float.class;
case 'I' :
return int.class;
case 'J' :
return long.class;
case 'S' :
return short.class;
case 'Z' :
return boolean.class;
default :
return null;
}
}
/**
* This overrides the default resolveClass() method to use a custom class loader.
*/
protected Class resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException {
String className = classDesc.getName();
//UtilsTrace.trace(" ObjectInputStreamCustomResolver: Resolving " + className);
// Handle arrays of classes differently
if (className.startsWith("[")) {//$NON-NLS-1$
Class component = null;
int dimNum;
for (dimNum = 1; className.charAt(dimNum) == '['; dimNum++)
if (className.charAt(dimNum) == 'L') {
component = cl.loadClass(className.substring(dimNum + 1, className.length() - 1));
} else {
if (className.length() != dimNum + 1)
throw new ClassNotFoundException(className); // malformed
component = getType(className.charAt(dimNum));
}
int dimensions[] = new int[dimNum];
for (int i = 0; i < dimNum; i++)
dimensions[i] = 0;
return Array.newInstance(component, dimensions).getClass();
}
return cl.loadClass(className);
}
}
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