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JBoss Marshalling OSGi Bundle with API and implementations

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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.jboss.marshalling;

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

/**
 * An externalizer factory which uses a fixed mapping from class to externalizer.
 */
public class MappingClassExternalizerFactory implements ClassExternalizerFactory {

    private final Map, Externalizer> externalizerMap;

    /**
     * Construct a new instance.  A copy is made of the given map.
     *
     * @param map the mapping
     */
    public MappingClassExternalizerFactory(final Map, Externalizer> map) {
        externalizerMap = Collections.unmodifiableMap(new HashMap, Externalizer>(map));
    }

    /** {@inheritDoc}  This implementation uses the fixed mapping that was specified in the constructor. */
    public Externalizer getExternalizer(final Class type) {
        return externalizerMap.get(type);
    }
}