GPMONGODB-295: Accessing hasMany set with objects will throw the exception: com.mongodb.DBRef cannot be cast to java.io.Serializable #290
Description
Original Reporter: shiranr
Environment: Not Specified
Version: 1.2.0.GA
Migrated From: http://jira.grails.org/browse/GPMONGODB-295
When trying to access hasMany set with objects in a new session, the following error will be thrown:
com.mongodb.DBRef cannot be cast to java.io.Serializable
java.lang.ClassCastException: com.mongodb.DBRef cannot be cast to java.io.Serializable
at org.grails.datastore.mapping.core.AbstractSession.retrieveAll(AbstractSession.java:661)
at org.grails.datastore.mapping.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:206)
at org.grails.datastore.mapping.collection.AbstractPersistentCollection.size(AbstractPersistentCollection.java:88)
at UserObjectsTests$_getAllSavedDataWithANewSession_closure1.doCall(UserObjectsTests.groovy:38)
at org.grails.datastore.gorm.GormStaticApi.withNewSession(GormStaticApi.groovy:731)
at org.grails.datastore.gorm.StaticMethodInvokingClosure.call(GormEnhancer.groovy:288)
at UserObjectsTests.getAllSavedDataWithANewSession(UserObjectsTests.groovy:33)
at UserObjectsTests.testUserObjectsCreation(UserObjectsTests.groovy:29)
After the exception is thrown, the set will be empty even though the mongoDB contains DBRef to the objects.
See attached integration test to reproduce the issue.