/**
* 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;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.IllegalStateException;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
/**
* A useful base class for implementing a {@link MessageProducer}
*
*
*/
public abstract class ActiveMQMessageProducerSupport implements MessageProducer, Closeable {
protected ActiveMQSession session;
protected boolean disableMessageID;
protected boolean disableMessageTimestamp;
protected int defaultDeliveryMode;
protected int defaultPriority;
protected long defaultTimeToLive;
protected int sendTimeout=0;
public ActiveMQMessageProducerSupport(ActiveMQSession session) {
this.session = session;
disableMessageTimestamp = session.connection.isDisableTimeStampsByDefault();
}
/**
* Sets whether message IDs are disabled.
* <P>
* Since message IDs take some effort to create and increase a message's
* size, some JMS providers may be able to optimize message overhead if
* they are given a hint that the message ID is not used by an application.
* By calling the <CODE>setDisableMessageID</CODE> method on this message
* producer, a JMS client enables this potential optimization for all
* messages sent by this message producer. If the JMS provider accepts this
* hint, these messages must have the message ID set to null; if the
* provider ignores the hint, the message ID must be set to its normal
* unique value.
* <P>
* Message IDs are enabled by default.
*
* @param value indicates if message IDs are disabled
* @throws javax.jms.JMSException if the JMS provider fails to close the producer due to
* some internal error.
*/
public void setDisableMessageID(boolean value) throws JMSException {
checkClosed();
this.disableMessageID = value;
}
/**
* Gets an indication of whether message IDs are disabled.
*
* @return an indication of whether message IDs are disabled
* @throws javax.jms.JMSException if the JMS provider fails to determine if message IDs are
* disabled due to some internal error.
*/
public boolean getDisableMessageID() throws JMSException {
checkClosed();
return this.disableMessageID;
}
/**
* Sets whether message timestamps are disabled.
* <P>
* Since timestamps take some effort to create and increase a message's
* size, some JMS providers may be able to optimize message overhead if
* they are given a hint that the timestamp is not used by an application.
* By calling the <CODE>setDisableMessageTimestamp</CODE> method on this
* message producer, a JMS client enables this potential optimization for
* all messages sent by this message producer. If the JMS provider accepts
* this hint, these messages must have the timestamp set to zero; if the
* provider ignores the hint, the timestamp must be set to its normal
* value.
* <P>
* Message timestamps are enabled by default.
*
* @param value indicates if message timestamps are disabled
* @throws javax.jms.JMSException if the JMS provider fails to close the producer due to
* some internal error.
*/
public void setDisableMessageTimestamp(boolean value) throws JMSException {
checkClosed();
this.disableMessageTimestamp = value;
}
/**
* Gets an indication of whether message timestamps are disabled.
*
* @return an indication of whether message timestamps are disabled
* @throws javax.jms.JMSException if the JMS provider fails to close the producer due to
* some internal error.
*/
public boolean getDisableMessageTimestamp() throws JMSException {
checkClosed();
return this.disableMessageTimestamp;
}
/**
* Sets the producer's default delivery mode.
* <P>
* Delivery mode is set to <CODE>PERSISTENT</CODE> by default.
*
* @param newDeliveryMode the message delivery mode for this message producer; legal
* values are <code>DeliveryMode.NON_PERSISTENT</code> and
* <code>DeliveryMode.PERSISTENT</code>
* @throws javax.jms.JMSException if the JMS provider fails to set the delivery mode due to
* some internal error.
* @see javax.jms.MessageProducer#getDeliveryMode
* @see javax.jms.DeliveryMode#NON_PERSISTENT
* @see javax.jms.DeliveryMode#PERSISTENT
* @see javax.jms.Message#DEFAULT_DELIVERY_MODE
*/
public void setDeliveryMode(int newDeliveryMode) throws JMSException {
if (newDeliveryMode != DeliveryMode.PERSISTENT && newDeliveryMode != DeliveryMode.NON_PERSISTENT) {
throw new javax.jms.IllegalStateException("unknown delivery mode: " + newDeliveryMode);
}
checkClosed();
this.defaultDeliveryMode = newDeliveryMode;
}
/**
* Gets the producer's default delivery mode.
*
* @return the message delivery mode for this message producer
* @throws javax.jms.JMSException if the JMS provider fails to close the producer due to
* some internal error.
*/
public int getDeliveryMode() throws JMSException {
checkClosed();
return this.defaultDeliveryMode;
}
/**
* Sets the producer's default priority.
* <P>
* The JMS API defines ten levels of priority value, with 0 as the lowest
* priority and 9 as the highest. Clients should consider priorities 0-4 as
* gradations of normal priority and priorities 5-9 as gradations of
* expedited priority. Priority is set to 4 by default.
*
* @param newDefaultPriority the message priority for this message producer; must be a
* value between 0 and 9
* @throws javax.jms.JMSException if the JMS provider fails to set the delivery mode due to
* some internal error.
* @see javax.jms.MessageProducer#getPriority
* @see javax.jms.Message#DEFAULT_PRIORITY
*/
public void setPriority(int newDefaultPriority) throws JMSException {
if (newDefaultPriority < 0 || newDefaultPriority > 9) {
throw new IllegalStateException("default priority must be a value between 0 and 9");
}
checkClosed();
this.defaultPriority = newDefaultPriority;
}
/**
* Gets the producer's default priority.
*
* @return the message priority for this message producer
* @throws javax.jms.JMSException if the JMS provider fails to close the producer due to
* some internal error.
* @see javax.jms.MessageProducer#setPriority
*/
public int getPriority() throws JMSException {
checkClosed();
return this.defaultPriority;
}
/**
* Sets the default length of time in milliseconds from its dispatch time
* that a produced message should be retained by the message system.
* <P>
* Time to live is set to zero by default.
*
* @param timeToLive the message time to live in milliseconds; zero is unlimited
* @throws javax.jms.JMSException if the JMS provider fails to set the time to live due to
* some internal error.
* @see javax.jms.MessageProducer#getTimeToLive
* @see javax.jms.Message#DEFAULT_TIME_TO_LIVE
*/
public void setTimeToLive(long timeToLive) throws JMSException {
if (timeToLive < 0L) {
throw new IllegalStateException("cannot set a negative timeToLive");
}
checkClosed();
this.defaultTimeToLive = timeToLive;
}
/**
* Gets the default length of time in milliseconds from its dispatch time
* that a produced message should be retained by the message system.
*
* @return the message time to live in milliseconds; zero is unlimited
* @throws javax.jms.JMSException if the JMS provider fails to get the time to live due to
* some internal error.
* @see javax.jms.MessageProducer#setTimeToLive
*/
public long getTimeToLive() throws JMSException {
checkClosed();
return this.defaultTimeToLive;
}
/**
* Sends a message using the <CODE>MessageProducer</CODE>'s default
* delivery mode, priority, and time to live.
*
* @param message the message to send
* @throws javax.jms.JMSException if the JMS provider fails to send the message due to some
* internal error.
* @throws javax.jms.MessageFormatException if an invalid message is specified.
* @throws javax.jms.InvalidDestinationException if a client uses this method with a <CODE>
* MessageProducer</CODE> with an invalid destination.
* @throws UnsupportedOperationException
* if a client uses this method with a <CODE>
* MessageProducer</CODE> that did not specify a
* destination at creation time.
* @see javax.jms.Session#createProducer
* @see javax.jms.MessageProducer
* @since 1.1
*/
public void send(Message message) throws JMSException {
this.send(this.getDestination(),
message,
this.defaultDeliveryMode,
this.defaultPriority,
this.defaultTimeToLive);
}
/**
* Sends a message to the destination, specifying delivery mode, priority,
* and time to live.
*
* @param message the message to send
* @param deliveryMode the delivery mode to use
* @param priority the priority for this message
* @param timeToLive the message's lifetime (in milliseconds)
* @throws javax.jms.JMSException if the JMS provider fails to send the message due to some
* internal error.
* @throws javax.jms.MessageFormatException if an invalid message is specified.
* @throws javax.jms.InvalidDestinationException if a client uses this method with a <CODE>
* MessageProducer</CODE> with an invalid destination.
* @throws UnsupportedOperationException
* if a client uses this method with a <CODE>
* MessageProducer</CODE> that did not specify a
* destination at creation time.
* @see javax.jms.Session#createProducer
* @since 1.1
*/
public void send(Message message, int deliveryMode, int priority, long timeToLive) throws JMSException {
this.send(this.getDestination(),
message,
deliveryMode,
priority,
timeToLive);
}
/**
* Sends a message to a destination for an unidentified message producer.
* Uses the <CODE>MessageProducer</CODE>'s default delivery mode,
* priority, and time to live.
* <P>
* Typically, a message producer is assigned a destination at creation
* time; however, the JMS API also supports unidentified message producers,
* which require that the destination be supplied every time a message is
* sent.
*
* @param destination the destination to send this message to
* @param message the message to send
* @throws javax.jms.JMSException if the JMS provider fails to send the message due to some
* internal error.
* @throws javax.jms.MessageFormatException if an invalid message is specified.
* @throws javax.jms.InvalidDestinationException if a client uses this method with an invalid destination.
* @throws UnsupportedOperationException
* if a client uses this method with a <CODE>
* MessageProducer</CODE> that specified a destination at
* creation time.
* @see javax.jms.Session#createProducer
* @see javax.jms.MessageProducer
*/
public void send(Destination destination, Message message) throws JMSException {
this.send(destination,
message,
this.defaultDeliveryMode,
this.defaultPriority,
this.defaultTimeToLive);
}
protected abstract void checkClosed() throws IllegalStateException;
/**
* @return the sendTimeout
*/
public int getSendTimeout() {
return sendTimeout;
}
/**
* @param sendTimeout the sendTimeout to set
*/
public void setSendTimeout(int sendTimeout) {
this.sendTimeout = sendTimeout;
}
}