/*
 *
 * Copyright (c) 2006 The Apache Software Foundation
 *
 * 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.apache.qpid.server;

import javax.management.JMException;
import java.io.IOException;

/**
 * The managed interface exposed to allow management of channels.
 * @author   Bhupendra Bhardwaj
 * @version  0.1
 */
public interface ManagedChannel
{
    static final String TYPE = "Channel";

    /**
     * Tells whether the channel is transactional.
     * @return true if the channel is transactional.
     * @throws IOException
     */
    boolean isTransactional() throws IOException;

    /**
     * Tells the number of unacknowledged messages in this channel.
     * @return number of unacknowledged messages.
     * @throws IOException
     */
    int getUnacknowledgedMessageCount() throws IOException;

    
    //********** Operations *****************//

    /**
     * Commits the transactions if the channel is transactional.
     * @throws IOException
     * @throws JMException
     */
    void commitTransactions() throws IOException, JMException;

    /**
     * Rollsback the transactions if the channel is transactional.
     * @throws IOException
     * @throws JMException
     */
    void rollbackTransactions() throws IOException, JMException;

}
