You are working in an OSGi environment, so you need to be thinking from the
osgi classloading perspective. Each osgi bundle under
repository/components/{plugins,dropins} has its own classloader and a
classpath.Hence, the place you put your persistence.xml is important. I'm not sure how you call OpenJPA, so I cannot comment on what steps to follow. But in essence, re-build your connector as an osgi bundle (its just a jar with a set of manifest entries in MANIFEST.MF), and place it in repository/components/dropins. I have not tested this myself though. Regards, KasunG On Wed, May 3, 2017 at 8:38 PM, Thomas LEGRAND <thomas.legr...@versusmind.eu > wrote: > Hello everybody, > > I am currently writing a custom connector to retrieve information from a > database. Because the mediators to do so does not fit my needs, I am using > a custom Java class which is currently implemented to retrieve a DataSource > via the JNDI name I configured in the ESB interface. That works nicely :) > > But then, for maintenance purpose, I would like to use JPA (preferably, > the OpenJPA implementation :)) but it is like the persistence.xml is not > even read. :( > My libraries are placed in the lib/ directory in the generated zip of my > connector and I don't have any problem using the classes of OpenJPA. > Actually, just this error message appears: > > 1 INFO [PassThroughMessageProcessor-313] openjpa.Runtime - Starting > OpenJPA 2.4.0 org.apache.openjpa.persistence.ArgumentException: The > persistence provi der is attempting to use properties in the > persistence.xml file to resolve the data source. A Java Database > Connectivity (JDBC) driver or data source class name must be specified in > the openjpa.ConnectionDriverName or javax.persistence.jdbc.driver property. > The following properties are available in the configuration: > "org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl@442ce698". > > In the persistence.xml, you have the following content : > > <?xml version="1.0" encoding="UTF-8"?> > <persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > xsi:schemaLocation="http://java.sun.com/xml/ns/persistence > http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";> > <persistence-unit name="my-pu" transaction-type="RESOURCE_LOCAL"> > <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</ > provider> > <jta-data-source>jdbc/MyDataSource</jta-data-source> > </persistence-unit> > </persistence> > > Is there some hidden magic to make it work? > > Thank you :) > > Regards, > > Thomas > > _______________________________________________ > Dev mailing list > Dev@wso2.org > http://wso2.org/cgi-bin/mailman/listinfo/dev > > -- *Kasun Gajasinghe*Associate Technical Lead, WSO2 Inc. email: kasung AT spamfree wso2.com linked-in: http://lk.linkedin.com/in/gajasinghe blog: http://kasunbg.org phone: +1 650-745-4499, 77 678 0813
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