RemoveOnlyMap.java

/*
 * #%L
 * Gravia :: Resource
 * %%
 * Copyright (C) 2010 - 2014 JBoss by Red Hat
 * %%
 * 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.
 * #L%
 */
package org.jboss.gravia.utils;

import java.util.Collection;
import java.util.Map;
import java.util.Set;

/**
 * A Map that does not allow put operations.
 *
 * @author thomas.diesler@jboss.com
 * @since 23-Jan-2013
 */
public final class RemoveOnlyMap<K,V> implements Map<K,V> {

    Map<K,V> delegate;

    public RemoveOnlyMap(Map<K,V> delegate) {
        if (delegate == null)
            throw new IllegalArgumentException("delegate");
        this.delegate = delegate;
    }

    @Override
    public void clear() {
        delegate.clear();
    }

    @Override
    public boolean containsKey(Object arg0) {
        return delegate.containsKey(arg0);
    }

    @Override
    public boolean containsValue(Object arg0) {
        return delegate.containsValue(arg0);
    }

    @Override
    public Set<Map.Entry<K, V>> entrySet() {
        return delegate.entrySet();
    }

    @Override
    public V get(Object arg0) {
        return delegate.get(arg0);
    }

    @Override
    public boolean isEmpty() {
        return delegate.isEmpty();
    }

    @Override
    public Set<K> keySet() {
        return delegate.keySet();
    }

    @Override
    public V put(K arg0, V arg1) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void putAll(Map<? extends K, ? extends V> arg0) {
        throw new UnsupportedOperationException();
    }

    @Override
    public V remove(Object arg0) {
        return delegate.remove(arg0);
    }

    @Override
    public int size() {
        return delegate.size();
    }

    @Override
    public Collection<V> values() {
        return delegate.values();
    }

    @Override
    public int hashCode() {
        return delegate.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return delegate.equals(obj);
    }

    @Override
    public String toString() {
        return delegate.toString();
    }
}