Error happens when *root url* is null (which is a valid value):
```
log.debugf(
"Unable to resolve class [%s] named in persistence unit [%s]",
unresolvedListedClassName,
scanEnvironment.getRootUrl().toExternalForm()
);
```
Stack trace:
```
Caused by: java.lang.NullPointerException
at org.hibernate.boot.model.process.internal.ScanningCoordinator.applyScanResultsToManagedResources(ScanningCoordinator.java:274)
at org.hibernate.boot.model.process.internal.ScanningCoordinator.coordinateScan(ScanningCoordinator.java:81)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.prepare(MetadataBuildingProcess.java:98)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:228)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:163)
at play.db.jpa.JPAPlugin.newEntityManagerFactory(JPAPlugin.java:202)
at play.db.jpa.JPAPlugin.onApplicationStart(JPAPlugin.java:151)
at play.plugins.PluginCollection.onApplicationStart(PluginCollection.java:616)
at play.Play.start(Play.java:541)
... 3 more
``` |
|
