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/* 
 * Copyright (c) 2008-2010, Hazel Ltd. All Rights Reserved.
 * 
 * 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 com.hazelcast.client;

import java.util.*;
import java.util.Map.Entry;

public class ValueCollection implements Collection {
    private final EntryHolder proxy;
    private final Set> entrySet;

    public ValueCollection(EntryHolder proxy, Set> entrySet) {
        this.proxy = proxy;
        this.entrySet = entrySet;
    }

    public boolean add(V arg0) {
        throw new UnsupportedOperationException();
    }

    public boolean addAll(Collection arg0) {
        throw new UnsupportedOperationException();
    }

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

    public boolean contains(Object arg0) {
        for (Entry anEntrySet : entrySet) {
            Object object = anEntrySet.getValue();
            if (object.equals(arg0)) {
                return true;
            }
        }
        return false;
    }

    public boolean containsAll(Collection arg0) {
        for (Object object : arg0) {
            if (!contains(object)) {
                return false;
            }
        }
        return true;
    }

    public boolean isEmpty() {
        return entrySet.size() == 0;
    }

    public Iterator iterator() {
        return new ValueIterator(entrySet.iterator());
    }

    public boolean remove(Object arg0) {
        throw new UnsupportedOperationException();
    }

    public boolean removeAll(Collection arg0) {
        throw new UnsupportedOperationException();
    }

    public boolean retainAll(Collection arg0) {
        return false;
    }

    public int size() {
        return entrySet.size();
    }

    public Object[] toArray() {
        List list = new ArrayList(entrySet.size());
        for (Entry entry : entrySet) {
            list.add(entry.getValue());
        }
        return list.toArray();
    }

    public  T[] toArray(final T[] a) {
        if (a == null) {
            throw new NullPointerException();
        }
        final int size = size();
        final T[] result;
        if (a.length < size) {
            result = (T[]) java.lang.reflect.Array.newInstance(a.getClass().getComponentType(), size);
        } else {
            result = a;
        }
        int i = 0;
        for (Entry entry : entrySet){ 
            result[i++] = (T) entry.getValue();
        }

        for(int j = i; j < a.length; j++){
        	result[j] = null;
        }

        return result;
    }
}