/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      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 org.drools.core.factmodel.traits;

import java.io.Serializable;

public abstract class Key<T> implements LatticeElement<T>, Serializable {

    private T value;
    private int id;

    public Key( int id, T value ) {
        this.value = value;
        this.id = id;
    }

    public T getValue() {
        return value;
    }

    public void setValue( T value ) {
        this.value = value;
    }

    public int getId() {
        return id;
    }

    public void setId( int id ) {
        this.id = id;
    }

    @Override
    public boolean equals( Object o ) {
        if ( this == o ) return true;
        if ( o == null || getClass() != o.getClass() ) return false;

        Key key = (Key) o;

        if ( id != key.id ) return false;

        return true;
    }

    @Override
    public int hashCode() {
        return id;
    }

    @Override
    public String toString() {
        return id + " :: " + value;
    }
}