org.xbib.helianthus.common.util.ImmutableMap Maven / Gradle / Ivy

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package org.xbib.helianthus.common.util;

import java.util.AbstractMap;
import java.util.AbstractSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

public class ImmutableMap extends AbstractMap {

    private final Map map;

    public ImmutableMap(Map map) {
        this.map = map;
    }

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

    @Override
    public boolean containsKey(Object key) {
        return map.containsKey(key);
    }

    @Override
    public V get(Object key) {
        return map.get(key);
    }

    @Override
    public Set> entrySet() {
        return new AbstractSet>() {

            @Override
            public Iterator> iterator() {
                return map.entrySet().iterator();
            }

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

    @Override
    public V put(final K key, final V value) {
        throw new UnsupportedOperationException();
    }

    @Override
    public V remove(final Object key) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void putAll(final Map m) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void clear() {
        throw new UnsupportedOperationException();
    }

}