NullPointerException when Query.list() -------------------------------------- Key: HSEARCH-48 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-48 Project: Hibernate Search Issue Type: Bug Components: query Environment: Linux, Oracle/MySQL Reporter: Eddie Man Priority: Critical Attachments: screenshot21.png Suppose I have the following mapping: ClassA ======= <class name="ClassA" table="TableA" lazy="false"> <id name="ID" column="ID" type="integer" unsaved-value="0"> <generator class="native"> </generator> </id> <one-to-one name="classB" class="ClassB" cascade="save-update,lock" property-ref="classA" lazy="no-proxy" access="field"/> </class> ClassB ======= <class name="ClassB" table="TableB" lazy="false"> <composite-id> <key-property name="ID" column="ID" type="integer"/> <key-many-to-one name="classA" column="ClassAID" class="ClassA"> </key-many-to-one> </composite-id> </class> Pre-condition : TableA +----+ | ID | +----+ | 1 | +----+ TableB +----+----------+ | ID | ClassAID | +----+----------+ | 1 | 1 | +----+----------+ When I use Session.createQuery("From ClassA as ClassA").list(), it throw the following exception: java.lang.NullPointerException at org.hibernate.persister.entity.AbstractEntityPersister.loadByUniqueKey(AbstractEntityPersister.java:1641) at org.hibernate.type.EntityType.loadByUniqueKey(EntityType.java:608) at org.hibernate.type.EntityType.resolve(EntityType.java:382) at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116) at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842) at org.hibernate.loader.Loader.doQuery(Loader.java:717) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224) at org.hibernate.loader.Loader.doList(Loader.java:2211) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095) at org.hibernate.loader.Loader.list(Loader.java:2090) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:375) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1123) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira