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Access to the Neo4j graph database through Java

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/**
 * Copyright (c) 2002-2016 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * 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 org.neo4j.driver.internal.messaging;

import java.io.IOException;

import static java.lang.String.format;

/**
 * FAILURE response message
 * 
 * Sent by the server to signal a failed operation.
 * Terminates response sequence.
 */
public class FailureMessage implements Message
{
    private final String code;
    private final String message;

    public FailureMessage( String code, String message )
    {
        super();
        this.code = code;
        this.message = message;
    }

    @Override
    public void dispatch( MessageHandler handler ) throws IOException
    {
        handler.handleFailureMessage( code, message );
    }

    @Override
    public String toString()
    {
        return format( "[FAILURE %s \"%s\"]", code, message );
    }

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

        FailureMessage that = (FailureMessage) o;

        return !(code != null ? !code.equals( that.code ) : that.code != null) &&
               !(message != null ? !message.equals( that.message ) : that.message != null);

    }

    @Override
    public int hashCode()
    {
        int result = code != null ? code.hashCode() : 0;
        result = 31 * result + (message != null ? message.hashCode() : 0);
        return result;
    }
}