EclipseLink/UserGuide/DBWS/Using SessionCustomizer

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Using an EclipseLink SessionCustomizer

When using an EclipseLink SessionCustomizer 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.

Refer to the EclipseLink Documentation for details on the SessionCustomizer.

Example

This example illustrates how to implement an EclipseLink SessionCustomizer:

package some.java.package;
 
import org.eclipse.persistence.config.SessionCustomizer; 
import org.eclipse.persistence.sessions.Session; 
import org.eclipse.persistence.sessions.DatabaseLogin; 
 
public class MySessionCustomizer implements SessionCustomizer {
 
  public MySessionCustomizer() {
  }
 
  public void customize(Sesssion session) { 
    DatabaseLogin login = (DatabaseLogin)session.getDatasourceLogin();
    // enable 'dirty' reads
    login.setTransactionIsolation(DatabaseLogin.TRANSACTION_READ_UNCOMMITTED); 
  } 
}

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:

ORM Project

<?xml version="1.0" encoding="UTF-8"?> 
<dbws-builder xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
  <properties>
    <property name="projectName">customize_test</property>
     ...
    <property name="orSessionCustomizerClassName">some.java.package.MyORSessionCustomizer</property>

ORX Project

<?xml version="1.0" encoding="UTF-8"?> 
<dbws-builder xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
  <properties>
    <property name="projectName">customize_test</property>
     ...
    <property name="oxSessionCustomizerClassName">some.java.package.MyOXSessionCustomizer</property>