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/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package evalexpr;
import java.util.Map;
/**
* A class loader which loads classes from byte arrays.
*
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own
* risk. This code and its internal interfaces are subject to change
* or deletion without notice.</b></p>
* @author Peter von der Ahé
*/
public class ByteArrayClassLoader extends ClassLoader {
/**
* Maps binary class names to class files stored as byte arrays.
*/
private Map<String, byte[]> classes;
/**
* Creates a new instance of ByteArrayClassLoader
* @param classes a map from binary class names to class files stored as byte arrays
*/
public ByteArrayClassLoader(Map<String, byte[]> classes) {
this.classes = classes;
}
@Override
public Class<?> loadClass(String name) throws ClassNotFoundException {
try {
return super.loadClass(name);
} catch (ClassNotFoundException e) {
byte[] classData = classes.get(name);
return defineClass(name, classData, 0, classData.length);
}
}
}
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