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/*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * 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.
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 */
package org.fabric3.spi.classloader;

import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

/**
 * A specialized ObjectOutputStream that serializes objects with classloader information so they may be deserialized by {@link
 * MultiClassLoaderObjectInputStream}.
 */
public class MultiClassLoaderObjectOutputStream extends ObjectOutputStream {
    public MultiClassLoaderObjectOutputStream(OutputStream out) throws IOException {
        super(out);
    }

    protected void annotateClass(Class cl) throws IOException {
        if (cl.getClassLoader() instanceof MultiParentClassLoader) {
            // write the classloader id
            String id = ((MultiParentClassLoader) cl.getClassLoader()).getName().toString();
            this.writeByte(id.length());
            writeBytes(id);
        } else {
            // use normal classloader resolution
            this.writeByte(-1);
        }
    }

}