me.shaftesbury.utils.functional.UnmodifiableMap Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of Functional-Utils-Java Show documentation

There is a newer version: 1.17

Show newest version

package me.shaftesbury.utils.functional;

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

/**
 * Created with IntelliJ IDEA.
 * User: Bob
 * Date: 04/11/13
 * Time: 15:25
 * To change this template use File | Settings | File Templates.
 */
public class UnmodifiableMap implements Map
{
    private final Map _map;
    public UnmodifiableMap(final Map map) { _map = map; }

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

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

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

    @Override
    public boolean containsValue(Object value) {
        return _map.containsValue(value);
    }

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

    @Override
    public V put(K key, V value) {
        throw new UnsupportedOperationException("Cannot put (K,V) into an UnmodifiableMap");
    }

    @Override
    public V remove(Object key) {
        throw new UnsupportedOperationException("Cannot remove K into an UnmodifiableMap");
    }

    @Override
    public void putAll(Map m) {
        throw new UnsupportedOperationException("Cannot put Map into an UnmodifiableMap");
    }

    @Override
    public void clear() {
        throw new UnsupportedOperationException("Cannot clear an UnmodifiableMap");
    }

    @Override
    public Set keySet() {
        return _map.keySet();
    }

    @Override
    public Collection values() {
        return _map.values();
    }

    @Override
    public Set> entrySet() {
        return _map.entrySet();
    }
}