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Difference between revisions of "EclipseLink/UserGuide/DBWS/Using SessionCustomizer"

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m (Replacing page with 'For the current version, see: '''[http://www.eclipse.org/eclipselink/documentation/2.4/dbws/toc.htm Developing Persistence Architectures Using EclipseLink Database Web Services...')
 
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{{EclipseLink_UserGuide
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For the current version, see:
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|info=y
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'''[http://www.eclipse.org/eclipselink/documentation/2.4/dbws/toc.htm Developing Persistence Architectures Using EclipseLink Database Web Services, Release 2.4]'''
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|toc=n
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|eclipselink=y
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|eclipselinktype=DBWS
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}}
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==Using an EclipseLink SessionCustomizer==
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For "Using an EclipseLink SessionCustomizer," see http://www.eclipse.org/eclipselink/documentation/2.4/dbws/creating_dbws_services002.htm
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When using an EclipseLink <tt>SessionCustomizer</tt> with DBWS, you can access to the EclipseLink API to retrieve the OR (object-relational) or OX (object-XML) mapping descriptors from the session. You can then use the descriptors to add, change, or delete mappings.  
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Refer to the [http://wiki.eclipse.org/Introduction_to_EclipseLink_Sessions_%28ELUG%29#Session_Customization EclipseLink Documentation] for details on the <tt>SessionCustomizer</tt>.
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[[Category:DBWS]]
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===Example===
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This example illustrates how to implement an EclipseLink <tt>SessionCustomizer</tt>:
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<source lang="java">
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package some.java.package;
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import org.eclipse.persistence.config.SessionCustomizer;
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import org.eclipse.persistence.sessions.Session;
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import org.eclipse.persistence.sessions.DatabaseLogin;
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public class MySessionCustomizer implements SessionCustomizer {
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  public MySessionCustomizer() {
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  }
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  public void customize(Sesssion session) {
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    DatabaseLogin login = (DatabaseLogin)session.getDatasourceLogin();
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    // enable 'dirty' reads
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    login.setTransactionIsolation(DatabaseLogin.TRANSACTION_READ_UNCOMMITTED);
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  }
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}
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</source>
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In the '''DBWSBuilder''' configuration file, you must use the '''orSessionCustomizerClassName''' or '''oxSessionCustomizerClassName''' to specify if the customization applies to the ORM or ORX project (respectively), as shown here:
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'''ORM Project'''
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<source lang="xml">
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<?xml version="1.0" encoding="UTF-8"?>
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<dbws-builder xmlns:xsd="http://www.w3.org/2001/XMLSchema"
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  <properties>
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    <property name="projectName">customize_test</property>
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    ...
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    <property name="orSessionCustomizerClassName">some.java.package.MyORSessionCustomizer</property>
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</source>
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'''ORX Project'''
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<source lang="xml">
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<?xml version="1.0" encoding="UTF-8"?>
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<dbws-builder xmlns:xsd="http://www.w3.org/2001/XMLSchema"
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  <properties>
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    <property name="projectName">customize_test</property>
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    ...
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    <property name="oxSessionCustomizerClassName">some.java.package.MyOXSessionCustomizer</property>
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</source>
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Latest revision as of 08:46, 1 November 2012

For the current version, see: Developing Persistence Architectures Using EclipseLink Database Web Services, Release 2.4

For "Using an EclipseLink SessionCustomizer," see http://www.eclipse.org/eclipselink/documentation/2.4/dbws/creating_dbws_services002.htm

Retrieved from "https://wiki.eclipse.org/index.php?title=EclipseLink/UserGuide/DBWS/Using_SessionCustomizer&oldid=320678"

This page was last modified 08:46, 1 November 2012 by Eclipsepedia anonymous user Unnamed Poltroon.

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