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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 410</title> |
| </properties> |
| <body> |
| <section name="Sample 410: Distributed Transactions Management with the Transaction Mediator"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse" |
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
| xsi:schemaLocation="http://ws.apache.org/ns/synapse http://synapse.apache.org/ns/2010/04/configuration/synapse_config.xsd"> |
| |
| <sequence name="myFaultHandler"> |
| <log level="custom"> |
| <property name="text" value="** Rollback Transaction**"/> |
| </log> |
| <transaction action="rollback"/> |
| <send/> |
| </sequence> |
| |
| <sequence name="main" onError="myFaultHandler"> |
| <in> |
| <send> |
| <endpoint> |
| <address uri="http://localhost:9000/services/SimpleStockQuoteService"/> |
| </endpoint> |
| </send> |
| </in> |
| |
| <out> |
| <transaction action="new"/> |
| |
| <log level="custom"> |
| <property name="text" value="** Reporting to the Database esbdb**"/> |
| </log> |
| <dbreport useTransaction="true" xmlns="http://ws.apache.org/ns/synapse"> |
| <connection> |
| <pool> |
| <dsName>java:jdbc/XADerbyDS</dsName> |
| <icClass>org.jnp.interfaces.NamingContextFactory</icClass> |
| <url>localhost:1099</url> |
| <user>synapse</user> |
| <password>synapse</password> |
| </pool> |
| </connection> |
| <statement> |
| <sql>delete from company where name =?</sql> |
| <parameter expression="//m0:return/m1:symbol/child::text()" |
| xmlns:m0="http://services.samples" |
| xmlns:m1="http://services.samples/xsd" |
| type="VARCHAR"/> |
| </statement> |
| </dbreport> |
| |
| <log level="custom"> |
| <property name="text" value="** Reporting to the Database esbdb1**"/> |
| </log> |
| <dbreport useTransaction="true" xmlns="http://ws.apache.org/ns/synapse"> |
| <connection> |
| <pool> |
| <dsName>java:jdbc/XADerbyDS1</dsName> |
| <icClass>org.jnp.interfaces.NamingContextFactory</icClass> |
| <url>localhost:1099</url> |
| <user>synapse</user> |
| <password>synapse</password> |
| </pool> |
| </connection> |
| <statement> |
| <sql>INSERT into company values ('IBM','c4',12.0)</sql> |
| </statement> |
| </dbreport> |
| <transaction action="commit"/> |
| <send/> |
| </out> |
| </sequence> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| Demonstrate how to manage complex distributed transactions using the transaction |
| mediator |
| </p> |
| </subsection> |
| <subsection name="Pre-requisites"> |
| <p> |
| <ul> |
| <li> |
| To run this sample it is required to deploy Synpase on JBoss application |
| server(This is only tested with JBoss application sever). You can use the |
| Synapse war distribution to deploy Synapse on JBoss. Use the synpase_sample_410.xml |
| as the synapse confiuration file and start JBoss. Also you need to define |
| two XA datasources for above the two datasources defined in Synapse. You'll |
| need to refer JBoss documentation to see how to do this. |
| </li> |
| <li> |
| Setup two Derby database instances as described in the database setup guide. |
| These databases will be used by the XA datasources in JBoss. |
| </li> |
| <li> |
| Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2 |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <p> |
| In this sample a record is deleted from one database and it is added to the |
| second database. If either of the operations(deleting from the 1st database and |
| adding to the second database) fails the entire operation will be roll backed. |
| The records will be left intact. |
| </p> |
| <p> |
| Invoke the client as follows to try this out. |
| </p> |
| <div class="command">ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/ -Dsymbol=SUN</div> |
| <p> |
| You can force an error by shutting down one of the two database instances. |
| </p> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
