/*
 * 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.axiom.weaver;

import java.util.HashMap;
import java.util.Map;

import org.apache.axiom.weaver.mixin.ClassDefinition;

final class WeavingClassLoader extends ClassLoader {
    private final Map<String, ClassDefinition> classDefinitions =
            new HashMap<String, ClassDefinition>();

    WeavingClassLoader(ClassLoader parent, ClassDefinition[] classDefinitions) {
        super(parent);
        for (ClassDefinition classDefinition : classDefinitions) {
            this.classDefinitions.put(classDefinition.getClassName(), classDefinition);
        }
    }

    @Override
    protected Class<?> findClass(String name) throws ClassNotFoundException {
        ClassDefinition classDefinition = classDefinitions.get(name.replace('.', '/'));
        if (classDefinition == null) {
            throw new ClassNotFoundException(name);
        }
        //        classDefinition.dump(new PrintWriter(System.out));
        byte[] bytes = classDefinition.toByteArray();
        return defineClass(
                classDefinition.getClassName().replace('/', '.'), bytes, 0, bytes.length);
    }
}
