| /* 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.filter; |
| |
| import org.apache.qpid.client.message.AbstractJMSMessage; |
| import org.apache.qpid.QpidException; |
| import org.apache.qpid.ErrorCode; |
| import org.slf4j.LoggerFactory; |
| import org.slf4j.Logger; |
| |
| import javax.jms.JMSException; |
| import java.util.HashMap; |
| |
| /** |
| * 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 DEFAULT_PRIORITY = 4; |
| |
| private static final Logger _logger = LoggerFactory.getLogger(PropertyExpression.class); |
| |
| private static final HashMap<String, Expression> JMS_PROPERTY_EXPRESSIONS = new HashMap<String, Expression>(); |
| |
| static |
| { |
| JMS_PROPERTY_EXPRESSIONS.put("JMSDestination", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| //TODO |
| return null; |
| } |
| }); |
| JMS_PROPERTY_EXPRESSIONS.put("JMSReplyTo", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| return message.getReplyToString(); |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSType", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| try |
| { |
| return message.getJMSType(); |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property", e); |
| |
| return null; |
| } |
| |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSDeliveryMode", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| try |
| { |
| int mode = message.getJMSDeliveryMode(); |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("JMSDeliveryMode is :" + mode); |
| } |
| |
| return mode; |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property",e); |
| } |
| |
| return NON_PERSISTENT; |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSPriority", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| try |
| { |
| return message.getJMSPriority(); |
| } |
| catch (Exception e) |
| { |
| _logger.warn("Error evaluating property",e); |
| } |
| |
| return DEFAULT_PRIORITY; |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("AMQMessageID", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| |
| try |
| { |
| return message.getJMSMessageID(); |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property",e); |
| |
| return null; |
| } |
| |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSTimestamp", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| try |
| { |
| return message.getJMSTimestamp(); |
| } |
| catch (Exception e) |
| { |
| _logger.warn("Error evaluating property",e); |
| |
| return null; |
| } |
| |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSCorrelationID", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| |
| try |
| { |
| return message.getJMSCorrelationID(); |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property",e); |
| |
| return null; |
| } |
| |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSExpiration", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| |
| try |
| { |
| return message.getJMSExpiration(); |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property",e); |
| return null; |
| } |
| |
| } |
| }); |
| |
| JMS_PROPERTY_EXPRESSIONS.put("JMSRedelivered", new Expression() |
| { |
| public Object evaluate(AbstractJMSMessage message) |
| { |
| try |
| { |
| return message.getJMSRedelivered(); |
| } |
| catch (JMSException e) |
| { |
| _logger.warn("Error evaluating property",e); |
| return null; |
| } |
| } |
| }); |
| |
| } |
| |
| private final String name; |
| private final Expression jmsPropertyExpression; |
| |
| public PropertyExpression(String name) |
| { |
| this.name = name; |
| jmsPropertyExpression = JMS_PROPERTY_EXPRESSIONS.get(name); |
| } |
| |
| public Object evaluate(AbstractJMSMessage message) throws QpidException |
| { |
| |
| if (jmsPropertyExpression != null) |
| { |
| return jmsPropertyExpression.evaluate(message); |
| } |
| else |
| { |
| |
| try |
| { |
| |
| if (_logger.isDebugEnabled()) |
| { |
| _logger.debug("Looking up property:" + name); |
| _logger.debug("Properties are:" + message.getPropertyNames()); |
| } |
| return message.getObjectProperty(name); |
| } |
| catch(JMSException e) |
| { |
| throw new QpidException("Exception evaluating properties for filter", ErrorCode.INTERNAL_ERROR, e); |
| } |
| } |
| } |
| |
| 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); |
| } |
| |
| } |