/*
* Copyright 2000-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.bcel.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.apache.bcel.classfile.ClassParser;
import org.apache.bcel.classfile.JavaClass;
/**
* The repository maintains information about which classes have
* been loaded.
*
* It loads its data from the ClassLoader implementation
* passed into its constructor.
*
* @see org.apache.bcel.Repository
*
* @version $Id: ClassLoaderRepository.java 386056 2006-03-15 11:31:56Z tcurdt $
* @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
* @author David Dixon-Peugh
*/
public class ClassLoaderRepository implements Repository {
private java.lang.ClassLoader loader;
private Map loadedClasses = new HashMap(); // CLASSNAME X JAVACLASS
public ClassLoaderRepository(java.lang.ClassLoader loader) {
this.loader = loader;
}
/**
* Store a new JavaClass into this Repository.
*/
public void storeClass( JavaClass clazz ) {
loadedClasses.put(clazz.getClassName(), clazz);
clazz.setRepository(this);
}
/**
* Remove class from repository
*/
public void removeClass( JavaClass clazz ) {
loadedClasses.remove(clazz.getClassName());
}
/**
* Find an already defined JavaClass.
*/
public JavaClass findClass( String className ) {
if (loadedClasses.containsKey(className)) {
return (JavaClass) loadedClasses.get(className);
} else {
return null;
}
}
/**
* Lookup a JavaClass object from the Class Name provided.
*/
public JavaClass loadClass( String className ) throws ClassNotFoundException {
String classFile = className.replace('.', '/');
JavaClass RC = findClass(className);
if (RC != null) {
return RC;
}
try {
InputStream is = loader.getResourceAsStream(classFile + ".class");
if (is == null) {
throw new ClassNotFoundException(className + " not found.");
}
ClassParser parser = new ClassParser(is, className);
RC = parser.parse();
storeClass(RC);
return RC;
} catch (IOException e) {
throw new ClassNotFoundException(e.toString());
}
}
public JavaClass loadClass( Class clazz ) throws ClassNotFoundException {
return loadClass(clazz.getName());
}
/** Clear all entries from cache.
*/
public void clear() {
loadedClasses.clear();
}
/*
* @return null
*/
public ClassPath getClassPath() {
return null;
}
}