[News.eclipse.technology.eclipselink] NPE while using EclipseLink

["Lars Vogel" <Lars.Vogel@xxxxxxxxx>]

Hi,

I tried running a small example project with I used to use with OpenJPA with 
EclipseLink.

I receive a Null pointer exception, please see below. The only difference is 
that I use a difference persistence.xml (and that the classpath is 
different). The EclipseLink persistence.xmlcan be found here: 
http://www.vogella.de/articles/JavaPersistenceAPI/article.html#persistenceunits_s2b

I use EclipeLink 1.0 Milestone 6. With OpenJPA the examples run without 
problems.

Any advice?

Best regards, Lars

[EPS Info]: 2008.04.29 23:56:22.265--ServerSession(17160330)--EclipseLink, 
version: Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)

[EPS Warning]: 2008.04.29 
23:56:22.468--ServerSession(17160330)--java.sql.SQLException: Java 
exception: ': java.lang.NullPointerException'.

Exception in thread "main" Local Exception Stack:

Exception [EclipseLink-4002] (Eclipse Persistence Services - 1.0 (Build 
SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.DatabaseException

Internal Exception: java.sql.SQLException: Java exception: ': 
java.lang.NullPointerException'.

Error Code: 0

at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:313)

at 
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:308)

at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:136)

at 
org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:164)

at 
org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:578)

at 
org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:214)

at 
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:234)

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 main.Main.main(Main.java:20)

Caused by: java.sql.SQLException: Java exception: ': 
java.lang.NullPointerException'.

at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown 
Source)

at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)

at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)

at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)

at 
org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown 
Source)

at 
org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown 
Source)

at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown 
Source)

at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)

at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)

at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)

at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)

at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)

at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at 
org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:97)

... 9 more

Caused by: java.sql.SQLException: Java exception: ': 
java.lang.NullPointerException'.

at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown 
Source)

at 
org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown 
Source)

... 25 more