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Re: [eclipselink-users] @Convert, Custom Mapping Problem
You could also choose to define your converters in an eclipselink- orm.xml file which has the added benefit of being available to all entities regardless of super-class. We do this and prefix our converter names with "Global" (Global. ConverterBoolean) so that we know it is defined in the xml file. 

<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings
	xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/orm";
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.eclipse.org/eclipselink/xsds/persistence/orm http://www.eclipse.org/eclipselink/xsds/eclipselink_orm_1_0.xsd"; 
	version="1.0">
<converter class="jpa.ConverterBoolean.class" name="ConverterBoolean" /> 

</entity-mappings>


-zach

On Nov 4, 2008, at 6:11 AM, James Sutherland wrote:
This issue is you are setting the converters as SessionCustomizers in your persistence.xml. Do not do this. The annotations are all that you need. 


<property name="eclipselink.session.customizer"
value="jpa.ConverterOMSDatum"/>
<property name="eclipselink.session.customizer"
value="jpa.ConverterBoolean"/>




Dr. M.Olbrich wrote:


Hi,

switching from Oracle Toplink to EclipseLink 1.0.1
i get an Exception in eclipseLink when using a Converter
which should map from Boolean to String (YES, NO). In Toplink (older)
it works fine.
Here is my Entity Class, persistence.xml and the exception stacktrace. 

##############################################################################
@Entity
@Table(name = "PERSON", schema = "SYNCRO")
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
@Converter(name="ConverterBoolean",
converterClass=jpa.ConverterBoolean.class)
abstract public class Person extends OMSBean implements
java.io.Serializable {
...
   @Column(name = "adult", nullable = false, length = 80)
   @Convert("ConverterBoolean")
   protected boolean adult;
   public boolean isAdult() { return adult;}
   public void setAdult(boolean adult) {
PropertyChangeEvent pce = new PropertyChangeEvent(this, "adult", 
this.adult, adult);
       this.adult = adult;
       this.firePropertyChange(pce);
   }
...
...
##############################################################################
Persistence.xml:
         <persistence-unit name ="pu-oracle">
           <description>Basic javaSE application containing JSR 220
entity beans</description>

<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>

           <class>model.Person</class>
           <properties>
                   <!-- JDBC connection properties -->
                   <property name="eclipselink.jdbc.driver"
value="oracle.jdbc.driver.OracleDriver"/>
                   <property name="eclipselink.jdbc.url"
value="jdbc:oracle:thin:@localhost:1521:xe"/>
<!-- Customized Property Mappings --> 
                                 <property
name="eclipselink.session.customizer" value="jpa.ConverterOMSDatum"/>
                                 <property
name="eclipselink.session.customizer" value="jpa.ConverterBoolean"/>
...
##############################################################################
[EL Warning]: 2008.11.04 14:32:05.165--ServerSession(14694596)-- Ignoring default serialization on element [protected boolean model.Person.adult] within entity class [class model.Person] since a @Convert is specified. 
8375 [AWT-EventQueue-0] ERROR view.MainFrame  - Exception
[EclipseLink-28014] (Eclipse Persistence Services - 1.0.1 (Build
20080905)): org.eclipse.persistence.exceptions.EntityManagerSetupException 
Exception Description: Exception was thrown while processing property
[eclipselink.session.customizer] with value [jpa.ConverterBoolean].
Internal Exception: java.lang.ClassCastException: jpa.ConverterBoolean 
cannot be cast to org.eclipse.persistence.config.SessionCustomizer
Local Exception Stack:
Exception [EclipseLink-28014] (Eclipse Persistence Services - 1.0.1 (Build 20080905)): org.eclipse.persistence.exceptions.EntityManagerSetupException 
Exception Description: Exception was thrown while processing property
[eclipselink.session.customizer] with value [jpa.ConverterBoolean].
Internal Exception: java.lang.ClassCastException: jpa.ConverterBoolean 
cannot be cast to org.eclipse.persistence.config.SessionCustomizer
      at
org .eclipse .persistence .exceptions .EntityManagerSetupException .failedWhileProcessingProperty(EntityManagerSetupException.java:178) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerSetupImpl .processSessionCustomizer(EntityManagerSetupImpl.java:1222) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerSetupImpl .updateServerSession(EntityManagerSetupImpl.java:1198) 
      at
org .eclipse .persistence .internal .jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:237) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerFactoryImpl .getServerSession(EntityManagerFactoryImpl.java:69) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerFactoryImpl .createEntityManagerImpl(EntityManagerFactoryImpl.java:118) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerFactoryImpl .createEntityManagerImpl(EntityManagerFactoryImpl.java:112) 
      at
org .eclipse .persistence .internal .jpa .EntityManagerFactoryImpl .createEntityManager(EntityManagerFactoryImpl.java:100) 
      at view.Syncro_absatzApp.startup(Syncro_absatzApp.java:117)
at org.jdesktop.application.Application $1.run(Application.java:171) 
      at
java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
      at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
      at
java .awt .EventDispatchThread .pumpOneEventForFilters(EventDispatchThread.java:269) 
      at
java .awt .EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java: 184) 
      at
java .awt .EventDispatchThread .pumpEventsForHierarchy(EventDispatchThread.java:174) 
      at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
      at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java: 122) Caused by: java.lang.ClassCastException: jpa.ConverterBoolean cannot be 
cast to org.eclipse.persistence.config.SessionCustomizer
      at
org .eclipse .persistence .internal .jpa .EntityManagerSetupImpl .processSessionCustomizer(EntityManagerSetupImpl.java:1219) 
      ... 16 more
ERROR: JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = 
-2
JDWP exit error AGENT_ERROR_NO_JNI_ENV(183):  [../





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http://wiki.eclipse.org/User:James.sutherland.oracle.com James Sutherland 
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