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/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.util;

import java.io.Serializable;
import java.util.Map.Entry;

/**
 * An immutable entry implementation
 *
 * @param 
 * @param 
 */
public final class ImmutableEntry implements Entry, Serializable {

    private static final long serialVersionUID = 1L;

    private final K _key;
	private final V _value;

	public ImmutableEntry(K key, V value) {
		super();
		_key = key;
		_value = value;
	}

	@Override
	public K getKey() {
		return _key;
	}

	@Override
	public V getValue() {
		return _value;
	}

	@Override
	public V setValue(V value) {
		throw new UnsupportedOperationException();
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((_key == null) ? 0 : _key.hashCode());
		result = prime * result + ((_value == null) ? 0 : _value.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		@SuppressWarnings("rawtypes")
		ImmutableEntry other = (ImmutableEntry) obj;
		if (_key == null) {
			if (other._key != null)
				return false;
		} else if (!_key.equals(other._key))
			return false;
		if (_value == null) {
			if (other._value != null)
				return false;
		} else if (!_value.equals(other._value))
			return false;
		return true;
	}

	@Override
	public String toString() {
		return "ImmutableEntry[" + _key + "," + _value + "]";
	}
}