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http://opensource.atlassian.com/projects/hibernate/browse/HHH-4589?page=c...
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Rodrigo Carvalho Rezende commented on HHH-4589:
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Also, Why is it rejected? Maybe I wasn't clear before, sorry.
But I was not asking for the support for "embedded join" feature.
What I suppose to showed is that a query that was not reject by the parser was the cause
of a Null pointer exception.
At javadoc of EntityManager, at @thows section:
Throws: (...) IllegalArgumentException - if query string is not valid
If my query string is not supported by hibernate, I think it is invalid and
IllegalArgumentException would be the appropriate exception in this case. Null Pointer
Exception sounds "ugly" for many users, since it is the result of a possible non
checked precondition.
Thanks, Rodrigo.
HqlSqlWalker.createFromJoinElement throws
java.lang.NullPointerException when join Embedded classes
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Key: HHH-4589
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-4589
Project: Hibernate Core
Issue Type: New Feature
Components: query-hql
Affects Versions: 3.3.2
Environment: Hibernate 3.3.2.GA, Java 6 (Sun), Linux, Mysql 5
Reporter: Rodrigo Carvalho Rezende
Attachments: hb-hql-join-embedded-bug.tar.gz
When I join a entity with a embedded class in HQL a null pointer exception is thrown.
See the stack trace:
Exception in thread "main" java.lang.NullPointerException
at org.hibernate.hql.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:371)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.joinElement(HqlSqlBaseWalker.java:3452)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3239)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3112)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:571)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:288)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:231)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651)
at
org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:93)
at BugNullPointerException.main(BugNullPointerException.java:15)
I've isolated the behavior in an attached JSE (eclipse) project to be reproducible
(pls, create the "hb_hql_join_embedded_bug" database)
Thanks, Rodrigo.
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