Hi, I'm new to JBoss and Seam and have encountered a problem when trying to
query Entity beans outside of my EAR.
My environment consists of JBoss-4.0.5 running Seam-1.2.1.GA and Hibernate. My
EAR deployment uses a MySQL database (which is connecting and working just
fine) but also needs to query Entity beans, which also use Hibernate, and are
deployed one level up (~/server/default/deploy) as two separate JAR archives
(API and Impl). The JARs are able to communicate with Hibernate to create and
import data into their OracleXE database but aren't accessible from my EAR.
After having done some research I am not sure if the issue is related to Seam
needing an explicit persistence-unit declaration to use for the query or
whether there is an issue with the Entities needing to be published as a JMX
service using jboss-app.xml so that the separate classloaders can communicate.
I am writing the simplest query possible which throws the following exception:
Caused by: org.hibernate.hql.ast.QuerySyntaxException: CollectionCategory is
not mapped [select categoryCollection from CollectionCategory
categoryCollection where categoryCollection.collectionCategoryId = :el1]
at
org.hibernate.hql.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:158)
at
org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:87)
at
org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:70)
at
org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:265)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3056)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:2945)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:688)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:544)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281)
at
org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
at
org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:228)
at
org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160)
at
org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:77)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:56)
at
org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at
org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133)
at
org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623)
at
org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:92)
... 85 more
Is anyone able to elaborate on the mechanisms of communication between separate
JBoss deployments and the accessibility of Hibernate mappings? As well, whether
Seam's implicit usage of datasource mappings should be considered as a factor?
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