org.apache.activemq.artemis.core.server.impl.AbstractProtocolReference Maven / Gradle / Ivy
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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.activemq.artemis.core.server.impl;
import java.util.HashMap;
import org.apache.activemq.artemis.core.server.MessageReference;
import org.apache.activemq.artemis.utils.collections.LinkedListImpl;
/** I need to store protocol specific data on the references. The same need exists in both PagedReference and MessageReferenceImpl.
* This class will serve the purpose to keep the specific protocol data for either reference.
* */
public abstract class AbstractProtocolReference extends LinkedListImpl.Node implements MessageReference {
private HashMap protocolDataMap;
protected volatile long sequence = 0;
@Override
public T getProtocolData(Class classType) {
if (protocolDataMap == null) {
return null;
} else {
return (T)protocolDataMap.get(classType);
}
}
@Override
public void setProtocolData(Class classType, T protocolData) {
if (protocolDataMap == null) {
protocolDataMap = new HashMap<>();
}
protocolDataMap.put(classType, protocolData);
}
@Override
public long getSequence() {
return sequence;
}
@Override
public void setSequence(long nextSequence) {
this.sequence = nextSequence;
}
}