[hornetq-commits] JBoss hornetq SVN: r9158 - trunk/docs/user-manual/en.

Author: jmesnil Date: 2010-04-23 09:39:19 -0400 (Fri, 23 Apr 2010) New Revision: 9158 Modified: trunk/docs/user-manual/en/appserver-integration.xml Log: https://jira.jboss.org/jira/browse/HORNETQ-326: Improve documentation on configuring MDBs and resource adapter * updated MDB doc Modified: trunk/docs/user-manual/en/appserver-integration.xml =================================================================== --- trunk/docs/user-manual/en/appserver-integration.xml 2010-04-23 12:21:46 UTC (rev 9157) +++ trunk/docs/user-manual/en/appserver-integration.xml 2010-04-23 13:39:19 UTC (rev 9158) @@ -20,23 +20,23 @@ <title>Application Server Integration and Java EE</title> <para>HornetQ can be easily installed in JBoss Application Server 4 or later. For details on installing HornetQ in the JBoss Application Server please refer to quick-start guide.</para> - <para>Since HornetQ also provides a JCA adaptor, it should also be possible to integrate HornetQ + <para>Since HornetQ also provides a JCA adapter, it is also possible to integrate HornetQ as a JMS provider in other JEE compliant app servers. For instructions on how to integrate a remote JCA adaptor into another application sever, please consult the other application server's instructions.</para> - <para>A JCA Adapter basically controls the inflow of messages to Message Driven Beans and the + <para>A JCA Adapter basically controls the inflow of messages to Message-Driven Beans (MDBs) and the outflow of messages sent from other JEE components, e.g. EJBs and Servlets.</para> <para>This section explains the basics behind configuring the different JEE components in the AS.</para> <section> - <title>Configuring Message Driven Beans</title> + <title>Configuring Message-Driven Beans</title> <para>The delivery of messages to an MDB using HornetQ is configured on the JCA Adapter via - a configuration file <literal>ra.xml</literal> which can be found under in the <literal - >jms-ra.rar</literal> archive of directory. By default this is configured to consume + a configuration file <literal>ra.xml</literal> which can be found under the <literal + >jms-ra.rar</literal> directory. By default this is configured to consume messages using an InVM connector from the instance of HornetQ running within the - application server. A full list of what is configurable is found later in this chapter. </para> - <para>All MDB's however need to have the destination type and the destination configured. - The following example shows how this can be done via annotations.</para> + application server. The configuration properties are listed later in this chapter. </para> + <para>All MDBs however need to have the destination type and the destination configured. + The following example shows how this can be done using annotations:</para> <programlisting>@MessageDriven(name = "MDBExample", activationConfig = { @@ -54,25 +54,29 @@ <para>The <literal>ResourceAdapter</literal> annotation is used to specify which adaptor should be used. To use this you will need to import <literal - <literal>jboss-ejb3-ext-api.jar</literal> which can be found in the jboss + <literal>jboss-ejb3-ext-api.jar</literal> which can be found in the JBoss repository. Alternatively you can add use a deployment descriptor and add something like the following to <literal &lt;ejb-name>ExampleMDB&lt;/ejb-name> - &lt;resource-adapter-name>quartz-ra.rar&lt;/resource-adapter-name> + &lt;resource-adapter-name>hornetq-ra.rar&lt;/resource-adapter-name> &lt;/message-driven> </programlisting>You can also rename the hornetq-ra.rar directory to jms-ra.rar and neither the annotation or the extra descriptor information will be needed. If you do this you will need to edit the <literal>jms-ds.xml</literal> datasource file and change <literal>rar-name</literal> element.</para> + <note> + <para>HornetQ is the default JMS provider for JBoss AS 6. Starting with this AS version, HornetQ resource + adapter is named <literal>jms-ra.rar</literal>.</para> + </note> <para>All the examples shipped with the HornetQ distribution use the annotation.</para> <section> - <title>Using Container Managed Transactions</title> - <para>When an MDB is using Container Managed Transactions (CMT), the delivery of the + <title>Using Container-Managed Transactions</title> + <para>When an MDB is using Container-Managed Transactions (CMT), the delivery of the message is done within the scope of a JTA transaction. The commit or rollback of this transaction is controlled by the container itself. If the transaction is rolled - back then the message delivery semantics will kick in (by default this is to try and + back then the message delivery semantics will kick in (by default, it will try to redeliver the message up to 10 times before sending to a DLQ). Using annotations this would be configured as follows:</para> <programlisting>@MessageDriven(name = "MDB_CMP_TxRequiredExample", @@ -88,9 +92,8 @@ { public void onMessage(Message message)... }</programlisting> - <para>The <literal>TransactionManagement</literal> annotation tells the container to - treat this MDB to use Container Managed Persistence. The <literal - >TransactionAttribute</literal> annotation tells the container that a JTA + <para>The <literal>TransactionManagement</literal> annotation tells the container to manage the + transaction. The <literal>TransactionAttribute</literal> annotation tells the container that a JTA transaction is required for this MDB. Note that the only other valid value for this is <literal>TransactionAttributeType.NOT_SUPPORTED</literal> which tells the container that this MDB does not support JTA transactions and one should not be @@ -100,7 +103,7 @@ like:</para> <programlisting> @Resource - MessageDrivenContext ctx; + MessageDrivenContextContext ctx; public void onMessage(Message message) { @@ -113,7 +116,7 @@ ctx.setRollbackOnly(); } }</programlisting> - <para>If you don't want the over head of an xa transaction being created every time but + <para>If you do not want the overhead of an XA transaction being created every time but you would still like the message delivered within a transaction (i.e. you are only using a JMS resource) then you can configure the MDB to use a local transaction. This would be configured as such:</para> @@ -133,8 +136,8 @@ }</programlisting> </section> <section> - <title>Using Bean Managed Transactions</title> - <para>Message driven beans can also be configured to use Bean Managed Transactions + <title>Using Bean-Managed Transactions</title> + <para>Message-driven beans can also be configured to use Bean-Managed Transactions (BMT). In this case a User Transaction is created. This would be configured as follows:</para> <programlisting>@MessageDriven(name = "MDB_BMPExample", @@ -150,7 +153,7 @@ { public void onMessage(Message message) }</programlisting> - <para>When using Bean Managed Transactions the message delivery to the MDB will occur + <para>When using Bean-Managed Transactions the message delivery to the MDB will occur outside the scope of the user transaction and use the acknowledge mode specified by the user with the <literal>acknowledgeMode</literal> property. There are only 2 acceptable values for this <literal>Auto-acknowledge</literal> and <literal @@ -176,6 +179,7 @@ tx.begin(); //do some stuff within the transaction + tx.commit(); } @@ -186,8 +190,8 @@ }</programlisting> </section> <section> - <title>Using Message Selectors with MDB's</title> - <para>It is also possible to use MDB's with message selectors. To do this simple define + <title>Using Message Selectors with Message-Driven Beans</title> + <para>It is also possible to use MDBs with message selectors. To do this simple define your message selector as follows:</para> <programlisting>@MessageDriven(name = "MDBMessageSelectorExample", activationConfig = @@ -213,7 +217,7 @@ that the sending of the message will be done as part of the JTA transaction being used by the component.</para> <para>This means that if the sending of the message fails the overall transaction would - rollback and the message redelivered. Heres an example of this from within an + rollback and the message be redelivered. Heres an example of this from within an MDB:</para> <programlisting>@MessageDriven(name = "MDBMessageSendTxExample", activationConfig = @@ -274,15 +278,15 @@ } }</programlisting> <para>In JBoss Application Server you can use the JMS JCA adapter for sending messages from - EJBs (including Session, Entity and Message Driven Beans), Servlets (including jsps) and + EJBs (including Session, Entity and Message-Driven Beans), Servlets (including jsps) and custom MBeans.</para> </section> <section> <title>Configuring the JCA Adaptor</title> <para>The Java Connector Architecture (JCA) Adapter is what allows HornetQ to be integrated - with JEE components such as MDB's and EJB's. It configures how components such as MDB's - consume messages from the HornetQ server and also how components such as EJB's or - Servlet's can send messages.</para> + with JEE components such as MDBs and EJBs. It configures how components such as MDBs + consume messages from the HornetQ server and also how components such as EJBs or + Servlets can send messages.</para> <para>The HornetQ JCA adapter is deployed via the <literal>jms-ra.rar</literal> archive. The configuration of the adapter is found in this archive under <literal @@ -293,8 +297,7 @@ &lt;description>The transport type&lt;/description> &lt;config-property-name>ConnectorClassName&lt;/config-property-name> &lt;config-property-type>java.lang.String&lt;/config-property-type> - &lt;config-property-value>org.hornetq.core.remoting.impl.invm.InVMConnectorF - actory&lt;/config-property-value> + &lt;config-property-value>org.hornetq.core.remoting.impl.invm.InVMConnectorFactory&lt;/config-property-value> &lt;/config-property> &lt;config-property> &lt;description>The transport configuration. These values must be in the form of key=val;key=val;&lt;/description> @@ -356,7 +359,7 @@ &lt;/inbound-resourceadapter> &lt;/resourceadapter></programlisting> - <para>There are 3 main parts to this configuration.</para> + <para>There are three main parts to this configuration.</para> <orderedlist> <listitem> <para>A set of global properties for the adapter</para> @@ -367,7 +370,7 @@ </listitem> <listitem> <para>The configuration of the inbound part of the adapter. This is used for - controlling the consumption of messages via MDB's. </para> + controlling the consumption of messages via MDBs. </para> </listitem> </orderedlist> <section> @@ -375,7 +378,7 @@ <para>The first element you see is <literal>resourceadapter-class</literal> which should be left unchanged. This is the HornetQ resource adapter class.</para> <para>After that there is a list of configuration properties. This will be where most of - the configuration is done. The first 2 configure the transport used by the adapter + the configuration is done. The first two properties configure the transport used by the adapter and the rest configure the connection factory itself. </para> <note>