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Diffstat (limited to 'qpid/java/client/src/main/java/org/apache/qpid/client/AMQTopic.java')
| -rw-r--r-- | qpid/java/client/src/main/java/org/apache/qpid/client/AMQTopic.java | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/qpid/java/client/src/main/java/org/apache/qpid/client/AMQTopic.java b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQTopic.java new file mode 100644 index 0000000000..780dbcafc2 --- /dev/null +++ b/qpid/java/client/src/main/java/org/apache/qpid/client/AMQTopic.java @@ -0,0 +1,224 @@ +/* + * + * 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.client; + +import java.net.URISyntaxException; + +import javax.jms.InvalidDestinationException; +import javax.jms.JMSException; +import javax.jms.Topic; + +import org.apache.qpid.exchange.ExchangeDefaults; +import org.apache.qpid.framing.AMQShortString; +import org.apache.qpid.messaging.Address; +import org.apache.qpid.url.BindingURL; + +public class AMQTopic extends AMQDestination implements Topic +{ + public AMQTopic(String address) throws URISyntaxException + { + super(address); + } + + public AMQTopic(Address address) throws Exception + { + super(address); + } + + /** + * Constructor for use in creating a topic using a BindingURL. + * + * @param binding The binding url object. + */ + public AMQTopic(BindingURL binding) + { + super(binding); + } + + public AMQTopic(AMQShortString exchange, AMQShortString routingKey, AMQShortString queueName) + { + super(exchange, ExchangeDefaults.TOPIC_EXCHANGE_CLASS, routingKey, true, true, queueName, false); + } + + public AMQTopic(AMQShortString exchange, AMQShortString routingKey, AMQShortString queueName,AMQShortString[] bindingKeys) + { + super(exchange, ExchangeDefaults.TOPIC_EXCHANGE_CLASS, routingKey, true, true, queueName, false,bindingKeys); + } + + public AMQTopic(AMQConnection conn, String routingKey) + { + this(conn.getDefaultTopicExchangeName(), new AMQShortString(routingKey)); + } + + + public AMQTopic(AMQShortString exchangeName, String routingKey) + { + this(exchangeName, new AMQShortString(routingKey)); + } + + public AMQTopic(AMQShortString exchangeName, AMQShortString routingKey) + { + this(exchangeName, routingKey, null); + } + + public AMQTopic(AMQShortString exchangeName, AMQShortString name, boolean isAutoDelete, AMQShortString queueName, boolean isDurable) + { + super(exchangeName, ExchangeDefaults.TOPIC_EXCHANGE_CLASS, name, true, isAutoDelete, queueName, isDurable); + } + + protected AMQTopic(AMQShortString exchangeName, AMQShortString exchangeClass, AMQShortString routingKey, boolean isExclusive, + boolean isAutoDelete, AMQShortString queueName, boolean isDurable) + { + super(exchangeName, exchangeClass, routingKey, isExclusive, isAutoDelete, queueName, isDurable ); + } + + protected AMQTopic(AMQShortString exchangeName, AMQShortString exchangeClass, AMQShortString routingKey, boolean isExclusive, + boolean isAutoDelete, AMQShortString queueName, boolean isDurable,AMQShortString[] bindingKeys) + { + super(exchangeName, exchangeClass, routingKey, isExclusive, isAutoDelete, queueName, isDurable,bindingKeys); + } + + public static AMQTopic createDurableTopic(Topic topic, String subscriptionName, AMQConnection connection) + throws JMSException + { + if (topic instanceof AMQDestination && topic instanceof javax.jms.Topic) + { + AMQDestination qpidTopic = (AMQDestination)topic; + if (qpidTopic.getDestSyntax() == DestSyntax.ADDR) + { + try + { + AMQTopic t = new AMQTopic(qpidTopic.getAddress()); + AMQShortString queueName = getDurableTopicQueueName(subscriptionName, connection); + // link is never null if dest was created using an address string. + t.getLink().setName(queueName.asString()); + t.getSourceNode().setAutoDelete(false); + t.getSourceNode().setDurable(true); + + // The legacy fields are also populated just in case. + t.setQueueName(queueName); + t.setAutoDelete(false); + t.setDurable(true); + return t; + } + catch(Exception e) + { + JMSException ex = new JMSException("Error creating durable topic"); + ex.initCause(e); + ex.setLinkedException(e); + throw ex; + } + } + else + { + return new AMQTopic(qpidTopic.getExchangeName(), qpidTopic.getRoutingKey(), false, + getDurableTopicQueueName(subscriptionName, connection), + true); + } + } + else + { + throw new InvalidDestinationException("The destination object used is not from this provider or of type javax.jms.Topic"); + } + } + + public static AMQShortString getDurableTopicQueueName(String subscriptionName, AMQConnection connection) throws JMSException + { + return new AMQShortString(connection.getClientID() + ":" + subscriptionName); + } + + public String getTopicName() throws JMSException + { + if (getRoutingKey() != null) + { + return getRoutingKey().asString(); + } + else if (getSubject() != null) + { + return getSubject(); + } + else + { + return null; + } + } + + @Override + public AMQShortString getExchangeName() + { + if (super.getExchangeName() == null && super.getAddressName() != null) + { + return new AMQShortString(super.getAddressName()); + } + else + { + return _exchangeName; + } + } + + public AMQShortString getRoutingKey() + { + if (super.getRoutingKey() != null) + { + return super.getRoutingKey(); + } + else if (getSubject() != null) + { + return new AMQShortString(getSubject()); + } + else + { + setRoutingKey(new AMQShortString("")); + setSubject(""); + return super.getRoutingKey(); + } + } + + public boolean isNameRequired() + { + return !isDurable(); + } + + /** + * Override since the queue is always private and we must ensure it remains null. If not, + * reuse of the topic when registering consumers will make all consumers listen on the same (private) queue rather + * than getting their own (private) queue. + * <p/> + * This is relatively nasty but it is difficult to come up with a more elegant solution, given + * the requirement in the case on AMQQueue and possibly other AMQDestination subclasses to + * use the underlying queue name even where it is server generated. + */ + public void setQueueName(String queueName) + { + } + + public boolean equals(Object o) + { + return (o instanceof AMQTopic) + && ((AMQTopic)o).getExchangeName().equals(getExchangeName()) + && ((AMQTopic)o).getRoutingKey().equals(getRoutingKey()); + } + + public int hashCode() + { + return getExchangeName().hashCode() + getRoutingKey().hashCode(); + } +} |