thanks i have more information about this. i think that is not jpa problem. My poersistencefile is into the META-INF. I think tha is maven problem. when i intall (compile) my applicaion without the parent it runs ok but when i intall from the parent it does't run what do you think about this? do you occur anythig? thanks
2013/2/18 Kevin Sutter <[email protected]> > Welcome to the OpenJPA project! Depending on your environment, getting the > Enhancement processing to find your persistence.xml can be tricky > sometimes. I'm assuming you have looked at the available documentation for > getting this setup properly [1]. The key is probably in the error message > you received: > > "..Ensure that you have a > META-INF/persistence.xml file, that it is available in your classpath, or > that the properties file you are using for configuration is available." > > The contents of your persistence.xml looks fine, so the issue is probably > with just finding your persistence.xml. You have to ensure that this is > available via your classpath that is used for your enhancement processing. > With maven, it's sometimes useful to run with the -X option to see how your > properties, environment variables, and classpaths are getting setup. > > Another idea that is simple is to use the javaagent approach for getting > the enhancement processing done. This is especially useful for test > purposes, but can also be used for jse production usage. > > Sorry that we don't have a definitive answer for you. It looks like some > experimentation and understanding of your specific environment will be > required to get the enhancement done. Good luck! Please post back with > either success or continued issues. Thanks. > > This has nothing to do with your enhancement processing, but I would > suggest adding another property to your persistence.xml which will help > with foreign key processing: > <property name="openjpa.jdbc.SynchronizeMappings" > value="buildSchema(ForeignKeys=true)"/> > > Kevin > > > [1] http://openjpa.apache.org/entity-enhancement.html > > On Mon, Feb 18, 2013 at 10:37 AM, laudio.info <[email protected]> > wrote: > > > Hello > > i am trying to make my fisrt openjpa project. > > i am using maven. > > i have create the persistence.xml file (bellow) but when i try to compile > > my projects appears one error: > > [INFO] [openjpa:test-enhance {execution: enhancer}] > > [INFO] > > ------------------------------------------------------------------------ > > [ERROR] FATAL ERROR > > [INFO] > > ------------------------------------------------------------------------ > > [INFO] MetaDataFactory could not be configured > > (conf.newMetaDataFactoryInstance() returned null). This might mean that > no > > configuration properties were found. Ensure that you have a > > META-INF/persistence.xml file, that it is available in your classpath, or > > that the properties file you are using for configuration is available. If > > you are using Ant, please see the <properties> or <propertiesFile> > > attributes of the task's nested <config> element. This can also occur if > > your OpenJPA distribution jars are corrupt, or if your security policy is > > overly strict. > > [INFO] > > ------------------------------------------------------------------------ > > [INFO] Trace > > <openjpa-2.1.1-r422266:1148538 fatal user error> > > org.apache.openjpa.util.MetaDataException: MetaDataFactory could not be > > configured (conf.newMetaDataFactoryInstance() returned null). This might > > mean that no configuration properties were found. Ensure that you have a > > META-INF/persistence.xml file, that it is available in your classpath, or > > that the properties file you are using for configuration is available. If > > you are using Ant, please see the <properties> or <propertiesFile> > > attributes of the task's nested <config> element. This can also occur if > > your OpenJPA distribution jars are corrupt, or if your security policy is > > overly strict. > > at > > > > > org.apache.openjpa.meta.MetaDataRepository.initializeMetaDataFactory(MetaDataRepository.java:1904) > > at > > > > > org.apache.openjpa.meta.MetaDataRepository.endConfiguration(MetaDataRepository.java:1885) > > at > > > > > org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:518) > > at > > > > > org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443) > > > > My persistence.xml file is into the META-INF directory and has this: > > <?xml version="1.0" encoding="UTF-8"?> > > <persistence xmlns="http://java.sun.com/xml/ns/persistence"; > version="2.0"> > > <persistence-unit name="example" transaction-type="RESOURCE_LOCAL"> > > > > > <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> > > <class>com.caf.db.jpa.entities.Myrequest</class> > > <class>com.caf.db.jpa.entities.Myresponse</class> > > <properties> > > <property name="openjpa.jdbc.SynchronizeMappings" > value="buildSchema" > > /> > > <property name="openjpa.ConnectionDriverName" > > value="org.apache.derby.jdbc.EmbeddedDriver" /> > > <property name="openjpa.ConnectionURL" > > value="jdbc:derby:C:\Curro\My\prototipoWorkspace\MyDB\MyDB" /> > > <property name="openjpa.ConnectionUserName" value="" /> > > <property name="openjpa.ConnectionPassword" value="" /> > > </properties> > > </persistence-unit> > > </persistence> > > > > thanks > > >
