/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 1606468 2014-06-29 11:59:35Z ggregory $
* @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
* @author David Dixon-Peugh
*/
public class ClassLoaderRepository implements Repository {
private static final long serialVersionUID = -1052781833503868187L;
private java.lang.ClassLoader loader;
private Map<String, JavaClass> loadedClasses = new HashMap<String, JavaClass>(); // 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 ) {
return loadedClasses.containsKey(className) ? loadedClasses.get(className) : 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(className + " not found: " + e, e);
}
}
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;
}
}