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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you 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.apache.qpid.proton.amqp.security;


import org.apache.qpid.proton.amqp.Binary;


public final class SaslChallenge implements SaslFrameBody
{
    private Binary _challenge;

    public Binary getChallenge()
    {
        return _challenge;
    }

    public void setChallenge(Binary challenge)
    {
        if( challenge == null )
        {
            throw new NullPointerException("the challenge field is mandatory");
        }

        _challenge = challenge;
    }

    public Object get(final int index)
    {

        switch(index)
        {
            case 0:
                return _challenge;
        }

        throw new IllegalStateException("Unknown index " + index);

    }

    public int size()
    {
        return 1;

    }

    public  void invoke(SaslFrameBodyHandler handler, Binary payload, E context)
    {
        handler.handleChallenge(this, payload, context);
    }

    @Override
    public String toString()
    {
        return "SaslChallenge{" +
               "challenge=" + _challenge +
               '}';
    }
}