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Diffstat (limited to 'src/share/classes/com/sun/org/apache/bcel/internal/util/ClassLoaderRepository.java')
-rw-r--r-- | src/share/classes/com/sun/org/apache/bcel/internal/util/ClassLoaderRepository.java | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/share/classes/com/sun/org/apache/bcel/internal/util/ClassLoaderRepository.java b/src/share/classes/com/sun/org/apache/bcel/internal/util/ClassLoaderRepository.java new file mode 100644 index 0000000..eec10f4 --- /dev/null +++ b/src/share/classes/com/sun/org/apache/bcel/internal/util/ClassLoaderRepository.java @@ -0,0 +1,157 @@ +/* + * reserved comment block + * DO NOT REMOVE OR ALTER! + */ +package com.sun.org.apache.bcel.internal.util; + +/* ==================================================================== + * The Apache Software License, Version 1.1 + * + * Copyright (c) 2001 The Apache Software Foundation. All rights + * reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The end-user documentation included with the redistribution, + * if any, must include the following acknowledgment: + * "This product includes software developed by the + * Apache Software Foundation (http://www.apache.org/)." + * Alternately, this acknowledgment may appear in the software itself, + * if and wherever such third-party acknowledgments normally appear. + * + * 4. The names "Apache" and "Apache Software Foundation" and + * "Apache BCEL" must not be used to endorse or promote products + * derived from this software without prior written permission. For + * written permission, please contact apache@apache.org. + * + * 5. Products derived from this software may not be called "Apache", + * "Apache BCEL", nor may "Apache" appear in their name, without + * prior written permission of the Apache Software Foundation. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * ==================================================================== + * + * This software consists of voluntary contributions made by many + * individuals on behalf of the Apache Software Foundation. For more + * information on the Apache Software Foundation, please see + * <http://www.apache.org/>. + */ + +import java.io.*; + +import java.util.Map; +import java.util.HashMap; + +import com.sun.org.apache.bcel.internal.classfile.*; + +/** + * The repository maintains information about which classes have + * been loaded. + * + * It loads its data from the ClassLoader implementation + * passed into its constructor. + * + * @see com.sun.org.apache.bcel.internal.Repository + * + * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> + * @author David Dixon-Peugh + */ +public class ClassLoaderRepository + implements Repository +{ + private java.lang.ClassLoader loader; + private HashMap 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(); + } +} |