| <?xml version="1.0" encoding="ISO-8859-1" ?> |
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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 364</title> |
| </properties> |
| <body> |
| <section name="Sample 364: Executing Database Stored Procedures"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse"> |
| |
| <sequence name="main"> |
| <in> |
| <send> |
| <endpoint> |
| <address uri="http://localhost:9000/services/SimpleStockQuoteService"/> |
| </endpoint> |
| </send> |
| </in> |
| |
| <out> |
| <log level="custom"> |
| <property name="text" value="** Reporting to the Database **"/> |
| </log> |
| |
| <dbreport> |
| <connection> |
| <pool> |
| <driver>com.mysql.jdbc.Driver</driver> |
| <url>jdbc:mysql://localhost:3306/synapsedb</url> |
| <user>user</user> |
| <password>password</password> |
| </pool> |
| </connection> |
| <statement> |
| <sql>call updateCompany(?,?)</sql> |
| <parameter xmlns:m0="http://services.samples" |
| xmlns:m1="http://services.samples/xsd" |
| expression="//m0:return/m1:last/child::text()" type="DOUBLE"/> |
| <parameter xmlns:m0="http://services.samples" |
| xmlns:m1="http://services.samples/xsd" |
| expression="//m0:return/m1:symbol/child::text()" type="VARCHAR"/> |
| </statement> |
| </dbreport> |
| <log level="custom"> |
| <property name="text" value="** Looking up from the Database **"/> |
| </log> |
| <dblookup> |
| <connection> |
| <pool> |
| <driver>com.mysql.jdbc.Driver</driver> |
| <url>jdbc:mysql://localhost:3306/synapsedb</url> |
| <user>user</user> |
| <password>password</password> |
| </pool> |
| </connection> |
| <statement> |
| <sql>call getCompany(?)</sql> |
| <parameter xmlns:m0="http://services.samples" |
| xmlns:m1="http://services.samples/xsd" |
| expression="//m0:return/m1:symbol/child::text()" type="VARCHAR"/> |
| <result name="stock_prize" column="price"/> |
| </statement> |
| </dblookup> |
| <log level="custom"> |
| <property name="text" |
| expression="fn:concat('Stock Prize - ',get-property('stock_prize'))"/> |
| </log> |
| <send/> |
| </out> |
| </sequence> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| Demonstrate how to invoke a database stored procedure from Synapse |
| </p> |
| </subsection> |
| <subsection name="Pre-requisites"> |
| <p> |
| <ul> |
| <li> |
| Setup a MySQL database as described in the <a href="setup/db.html#mysql">database setup guide</a> |
| </li> |
| <li> |
| Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2 |
| </li> |
| <li> |
| Open the repository/conf/sample/synapse_sample_364.xml file and change the |
| database username, password credentials accordingly |
| </li> |
| <li> |
| Start Synapse using the configuration numbered 364 (repository/conf/sample/synapse_sample_364.xml) |
| <div class="command"> |
| Unix/Linux: sh synapse.sh -sample 364<br/> |
| Windows: synapse.bat -sample 364 |
| </div> |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <p> |
| This scenario is very similar to <a href="sample363.html">sample 363</a>, but makes |
| use of stored procedures to lookup and update the database instead of simple |
| SQL queries. Note that we are still using the dblookup and dbreport mediators |
| to access the database but the statements are simply calling a stored procedure in |
| MySQL (the syntax to call a stored procedue is database engine specific). |
| </p> |
| <p> |
| To try this sample out, invoke the sample client as follows. |
| </p> |
| <div class="command">ant stockquote -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/ -Dsymbol=IBM</div> |
| <p> |
| Synapse will invoke the two stored procedures as the response is mediated back |
| to the client. You will see the following output on the Synapse console. |
| </p> |
| <div class="consoleOutput">INFO LogMediator text = ** Looking up from the Database ** ... |
| INFO LogMediator text = Company ID - c1 ... |
| INFO LogMediator text = Stock price - 183.3635460215262</div> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
