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

import org.apache.activemq.openwire.annotations.OpenWireType;
import org.apache.activemq.openwire.annotations.OpenWireExtension;
import org.apache.activemq.openwire.annotations.OpenWireProperty;

/**
 * @openwire:marshaller code="123"
 *
 */
@OpenWireType(typeCode = 123)
public class ProducerId implements DataStructure {

    public static final byte DATA_STRUCTURE_TYPE = CommandTypes.PRODUCER_ID;

    @OpenWireProperty(version = 1, sequence = 1, cached = true)
    protected String connectionId;

    @OpenWireProperty(version = 1, sequence = 2)
    protected long value;

    @OpenWireProperty(version = 1, sequence = 3)
    protected long sessionId;

    @OpenWireExtension
    protected transient int hashCode;

    @OpenWireExtension
    protected transient String key;

    @OpenWireExtension
    protected transient SessionId parentId;

    public ProducerId() {
    }

    public ProducerId(SessionId sessionId, long producerId) {
        this.connectionId = sessionId.getConnectionId();
        this.sessionId = sessionId.getValue();
        this.value = producerId;
    }

    public ProducerId(ProducerId id) {
        this.connectionId = id.getConnectionId();
        this.sessionId = id.getSessionId();
        this.value = id.getValue();
    }

    public ProducerId(String producerKey) {
        // Parse off the producerId
        int p = producerKey.lastIndexOf(":");
        if (p >= 0) {
            value = Long.parseLong(producerKey.substring(p + 1));
            producerKey = producerKey.substring(0, p);
        }
        setProducerSessionKey(producerKey);
    }

    public SessionId getParentId() {
        if (parentId == null) {
            parentId = new SessionId(this);
        }
        return parentId;
    }

    @Override
    public int hashCode() {
        if (hashCode == 0) {
            hashCode = connectionId.hashCode() ^ (int)sessionId ^ (int)value;
        }
        return hashCode;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || o.getClass() != ProducerId.class) {
            return false;
        }
        ProducerId id = (ProducerId)o;
        return sessionId == id.sessionId && value == id.value && connectionId.equals(id.connectionId);
    }

    /**
     * @param sessionKey
     */
    private void setProducerSessionKey(String sessionKey) {
        // Parse off the value
        int p = sessionKey.lastIndexOf(":");
        if (p >= 0) {
            sessionId = Long.parseLong(sessionKey.substring(p + 1));
            sessionKey = sessionKey.substring(0, p);
        }
        // The rest is the value
        connectionId = sessionKey;
    }

    @Override
    public String toString() {
        if (key == null) {
            key = connectionId + ":" + sessionId + ":" + value;
        }
        return key;
    }

    @Override
    public byte getDataStructureType() {
        return DATA_STRUCTURE_TYPE;
    }

    /**
     * @openwire:property version=1 cache=true
     */
    public String getConnectionId() {
        return connectionId;
    }

    public void setConnectionId(String connectionId) {
        this.connectionId = connectionId;
    }

    /**
     * @openwire:property version=1
     */
    public long getValue() {
        return value;
    }

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

    /**
     * @openwire:property version=1
     */
    public long getSessionId() {
        return sessionId;
    }

    public void setSessionId(long sessionId) {
        this.sessionId = sessionId;
    }

    @Override
    public boolean isMarshallAware() {
        return false;
    }
}