[Hibernate-issues] [Hibernate-JIRA] Created: (HB-186) Problem in SQL generation with ".class" queries + "iterate()"

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  A new issue has been created in JIRA.

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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-186


Here is an overview of the issue:
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        Key: HB-186
    Summary: Problem in SQL generation with ".class" queries + "iterate()"
       Type: Bug

     Status: Unassigned
   Priority: Major

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.0.1

   Assignee: 
   Reporter: Fabio Tudone

    Created: Sat, 12 Jul 2003 2:50 AM
    Updated: Sat, 12 Jul 2003 2:50 AM
Environment: Windows 2000, WSAD 5 JVM (IBM 1.3)

Description:
I'm having a strange problem in Hibernate 2.0.1 when using the session.createQuery() + query.iterate() APIs. My mapping is the following: 
 
<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE hibernate-mapping PUBLIC "--//Hibernate/Hibernate Mapping DTD//EN" "hibernate-mapping-2.0.dtd"> 
 
 <hibernate-mapping auto-import="false" default-cascade="save-update"> 
 
 <class name="test.model.Super"> 
 <composite-id> 
 <key-property name="id"/> 
 </composite-id> 
 
 <property name="superAttr"/> 
 
 <joined-subclass name="test.model.Sub1"> 
 <key> 
 <column name="id"/> 
 </key> 
 
 <property name="sub1Attr"/> 
 </joined-subclass> 
 
 <joined-subclass name="test.model.Sub2"> 
 <key> 
 <column name="id"/> 
 </key> 
 
 <property name="sub2Attr"/> 
 </joined-subclass> 
 </class> 
</hibernate-mapping> 
 
 
The following code works perfectly: 
 
 
... 
Transaction t = s.beginTransaction(); 
 
 List l = s.find("from test.model.Super o where o.class = test.model.Sub1"); 
 
t.commit(); 
... 
 
 
On the other hand, the following code hangs: 
 
 
... 
Transaction t = s.beginTransaction(); 
 
 Query q = s.createQuery("from test.model.Super o where o.class = test.model.Sub1"); 
 Iterator it = q.iterate(); 
 
 while (it.hasNext()) { 
 Object o = it.next(); 
 } 
 
t.commit(); 
... 
 
 
The following SQL select query is generated by Hibernate upon the q.iterate() call: 
 
 
select super0_.id as x0_0_ from Super super0_ where (case when super0__1.id is not null then 1 when super0__2.id is not null then 2 when super0_.id is not null then 0 end=0 ) 
 
 
And the following exception is thrown by Oracle: 
 
 
[ERROR] JDBCExceptionReporter - -Could not execute query <java.sql.SQLException: ORA-00904: "SUPER0__2"."ID": invalid identifier 
>java.sql.SQLException: ORA-00904: "SUPER0__2"."ID": invalid identifier 
 
 at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134) 
 at oracle.jdbc.oci8.OCIDBAccess.check_error(OCIDBAccess.java:2321) 
 at oracle.jdbc.oci8.OCIDBAccess.parseExecuteDescribe(OCIDBAccess.java:1255) 
 at oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement.java:2391) 
 at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2672) 
 at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589) 
 at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:527) 
 at net.sf.hibernate.impl.BatcherImpl.getResultSet(BatcherImpl.java:62) 
 at net.sf.hibernate.loader.Loader.getResultSet(Loader.java:539) 
 at net.sf.hibernate.hql.QueryTranslator.iterate(QueryTranslator.java:789) 
 at net.sf.hibernate.impl.SessionImpl.iterate(SessionImpl.java:1422) 
 at net.sf.hibernate.impl.QueryImpl.iterate(QueryImpl.java:64) 
 at test.query.TestQueryIter.main(TestQueryIter.java:58) 
 
java.sql.SQLException: ORA-00904: "SUPER0__2"."ID": invalid identifier 
 at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134) 
 at oracle.jdbc.oci8.OCIDBAccess.check_error(OCIDBAccess.java:2321) 
 at oracle.jdbc.oci8.OCIDBAccess.parseExecuteDescribe(OCIDBAccess.java:1255) 
 at oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement.java:2391) 
 at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2672) 
 at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589) 
 at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:527) 
 at net.sf.hibernate.impl.BatcherImpl.getResultSet(BatcherImpl.java:62) 
 at net.sf.hibernate.loader.Loader.getResultSet(Loader.java:539) 
 at net.sf.hibernate.hql.QueryTranslator.iterate(QueryTranslator.java:789) 
 at net.sf.hibernate.impl.SessionImpl.iterate(SessionImpl.java:1422) 
 at net.sf.hibernate.impl.QueryImpl.iterate(QueryImpl.java:64) 
 at test.query.TestQueryIter.main(TestQueryIter.java:58) 
rethrown as net.sf.hibernate.JDBCException: Could not execute query: ORA-00904: "SUPER0__2"."ID": invalid identifier 
 at net.sf.hibernate.impl.SessionImpl.iterate(SessionImpl.java:1425) 
 at net.sf.hibernate.impl.QueryImpl.iterate(QueryImpl.java:64) 
 at test.query.TestQueryIter.main(TestQueryIter.java:58) 
 
 



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