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 Post subject: JPA2 : Pb with JPQL Map and VALUE() and KEY()
PostPosted: Wed May 26, 2010 3:41 am 

Joined: Tue May 25, 2010 11:44 am
Posts: 1

I have some problems when I use keyword VALUE() and KEY() in JPQL.
When EntityManager generate SQL, it seems to do not transform keyword VALUE() and KEY().

I obtain exception :

java.lang.IllegalStateException: No data type for node: org.hibernate.hql.ast.tree.MethodNode
\-[METHOD_CALL] MethodNode: '('
+-[METHOD_NAME] IdentNode: 'VALUE' {originalText=VALUE}
\-[EXPR_LIST] SqlNode: 'exprList'
\-[ALIAS_REF] IdentNode: 'elt2_.id' {alias=l, className=test.jpa2.entity.Elt, tableAlias=elt2_}

at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:154)
at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:844)
at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:632)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:678)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:294)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:237)
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:98)
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:1760)
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:277)
at test.jpa2.EmbededMapTest.dotest(EmbededMapTest.java:73)

my entities are :

public class Entity implements Serializable {
private Long id;
private String val;

private Map<String, Elt> elts =new HashMap<String, Elt>();

public Entity() ...
public Long getId()...
public void setId(Long id) ...
public String getVal() ...
public void setVal(String val) ...
public Map<String, Elt> getElts() ...
public void setElts(Map<String, Elt> elts) ...

public class Elt implements Serializable {
private Long id;
private String ssvalue;

public Elt()...
public String getSsvalue()...
public void setSsvalue(String ssvalue)...

query :
Query q = em.createQuery("select VALUE(l) from Entity e join e.elts l where KEY(l) = :name",Elt.class);
q.setParameter("name", "e1");
List<Elt> l = q.getResultList();

persitence.xml :

<persistence version="2.0" .....>
<persistence-unit name="manager1" transaction-type="RESOURCE_LOCAL">
<property name="hibernate.connection.driver_class" value="org.h2.Driver"/>
<property name="hibernate.connection.username" value="sa"/>
<property name="hibernate.connection.password" value=""/>
<property name="hibernate.connection.url" value="jdbc:h2:file:./target/data/data"/>
<property name="hibernate.max_fetch_depth" value="3"/>

I use :
H2 database
hibernate-entitymanager 3.5.2 final

Could someone help me please ?


 Post subject: Re: JPA2 : Pb with JPQL Map and VALUE() and KEY()
PostPosted: Sun Apr 10, 2011 3:25 am 

Joined: Thu Feb 21, 2008 12:15 pm
Posts: 4
I am having the exact same issue

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