openwire-core/src/main/java/org/apache/activemq/openwire/commands/Command.java

/**
 * 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.activemq.openwire.commands;

/**
 * The Command Pattern so that we can send and receive commands on the different
 * transports.
 */
public interface Command extends DataStructure {

    void setCommandId(int value);

    /**
     * @return the unique ID of this request used to map responses to requests
     */
    int getCommandId();

    void setResponseRequired(boolean responseRequired);

    boolean isResponseRequired();

    boolean isResponse();

    boolean isMessageDispatch();

    boolean isBrokerInfo();

    boolean isWireFormatInfo();

    boolean isMessage();

    boolean isMessageAck();

    boolean isMessageDispatchNotification();

    boolean isShutdownInfo();

    boolean isConnectionControl();

    boolean isConnectionInfo();

    boolean isSessionInfo();

    boolean isProducerInfo();

    boolean isConsumerInfo();

    Response visit(CommandVisitor visitor) throws Exception;

}