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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.server.filter;
//
// Based on like named file from r450141 of the Apache ActiveMQ project <http://www.activemq.org/site/home.html>
//
import java.util.HashMap;
import org.apache.log4j.Logger;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.CommonContentHeaderProperties;
import org.apache.qpid.server.queue.Filterable;
/**
* Represents a property expression
*/
public class PropertyExpression implements Expression
{
// Constants - defined the same as JMS
private static final int NON_PERSISTENT = 1;
private static final int PERSISTENT = 2;
private static final int DEFAULT_PRIORITY = 4;
private static final Logger _logger = org.apache.log4j.Logger.getLogger(PropertyExpression.class);
private static final HashMap<String, Expression> JMS_PROPERTY_EXPRESSIONS = new HashMap<String, Expression>();
{
JMS_PROPERTY_EXPRESSIONS.put("JMSDestination", new Expression()
{
public Object evaluate(Filterable message)
{
//TODO
return null;
}
});
JMS_PROPERTY_EXPRESSIONS.put("JMSReplyTo", new ReplyToExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSType", new TypeExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSDeliveryMode", new DeliveryModeExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSPriority", new PriorityExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSMessageID", new MessageIDExpression());
JMS_PROPERTY_EXPRESSIONS.put("AMQMessageID", new MessageIDExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSTimestamp", new TimestampExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSCorrelationID", new CorrelationIdExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSExpiration", new ExpirationExpression());
JMS_PROPERTY_EXPRESSIONS.put("JMSRedelivered", new Expression()
{
public Object evaluate(Filterable message)
{
return message.isRedelivered();
}
});
}
private final String name;
private final Expression jmsPropertyExpression;
public boolean outerTest()
{
return false;
}
public PropertyExpression(String name)
{
this.name = name;
jmsPropertyExpression = (Expression) JMS_PROPERTY_EXPRESSIONS.get(name);
}
public Object evaluate(Filterable message)
{
if (jmsPropertyExpression != null)
{
return jmsPropertyExpression.evaluate(message);
}
else
{
return message.getMessageHeader().getHeader(name);
}
}
public String getName()
{
return name;
}
/**
* @see java.lang.Object#toString()
*/
public String toString()
{
return name;
}
/**
* @see java.lang.Object#hashCode()
*/
public int hashCode()
{
return name.hashCode();
}
/**
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object o)
{
if ((o == null) || !this.getClass().equals(o.getClass()))
{
return false;
}
return name.equals(((PropertyExpression) o).name);
}
private static class ReplyToExpression implements Expression
{
public Object evaluate(Filterable message)
{
String replyTo = message.getMessageHeader().getReplyTo();
return replyTo;
}
}
private static class TypeExpression implements Expression
{
public Object evaluate(Filterable message)
{
String type = message.getMessageHeader().getType();
return type;
}
}
private static class DeliveryModeExpression implements Expression
{
public Object evaluate(Filterable message)
{
int mode = message.isPersistent() ? PERSISTENT : NON_PERSISTENT;
if (_logger.isDebugEnabled())
{
_logger.debug("JMSDeliveryMode is :" + mode);
}
return mode;
}
}
private static class PriorityExpression implements Expression
{
public Object evaluate(Filterable message)
{
byte priority = message.getMessageHeader().getPriority();
return (int) priority;
}
}
private static class MessageIDExpression implements Expression
{
public Object evaluate(Filterable message)
{
String messageId = message.getMessageHeader().getMessageId();
return messageId;
}
}
private static class TimestampExpression implements Expression
{
public Object evaluate(Filterable message)
{
long timestamp = message.getMessageHeader().getTimestamp();
return timestamp;
}
}
private static class CorrelationIdExpression implements Expression
{
public Object evaluate(Filterable message)
{
String correlationId = message.getMessageHeader().getCorrelationId();
return correlationId;
}
}
private static class ExpirationExpression implements Expression
{
public Object evaluate(Filterable message)
{
long expiration = message.getMessageHeader().getExpiration();
return expiration;
}
}
}
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