[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5074) Criteria query using AliasToBeanResultTransformer fails with 3.5-Final
Shawn Clowater (JIRA)
noreply at atlassian.com
Tue Apr 6 11:19:02 EDT 2010
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=36175#action_36175 ]
Shawn Clowater commented on HHH-5074:
-------------------------------------
Florian, I reported this under http://opensource.atlassian.com/projects/hibernate/browse/HHH-5063.
I've also got a workaround posted there.
> Criteria query using AliasToBeanResultTransformer fails with 3.5-Final
> ----------------------------------------------------------------------
>
> Key: HHH-5074
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5074
> Project: Hibernate Core
> Issue Type: Bug
> Components: core, query-criteria, query-sql
> Affects Versions: 3.5.0-Final
> Environment: Hibernate 3.5-Final,
> Database: MySQL 5.1.45 GA,
> JDBC: mysql-connector-java-5.1.12
> Reporter: Florian Grote
>
> I use the following Criteria query to receive the top ten users for an attribute "scoreSum". Attribute "statistic" is an embedded child (@Embeddable) of "User" entity.
> The result is written directly into a value object using AliasToBeanResultTransformer.
> {code:title=Criteria query|borderStyle=solid}
> @SuppressWarnings("unchecked")
> @Override
> public List<TopUserVO> getTopUsersAsVO(int max) {
> return getCurrentSession().createCriteria(User.class)
> .setProjection(Projections.projectionList()
> .add( Projections.property("username"), "username" )
> .add( Projections.property("statistic.scoreSum"), "scores" )
> )
> .addOrder(Property.forName("statistic.scoreSum").desc())
> .setMaxResults(max)
> .setResultTransformer( new AliasToBeanResultTransformer(TopUserVO.class) )
> .list();
> }
> {code}
> Until inclusive Hibernate version 3.5-CR2 this runs fine and results in the valid (My-)SQL query:
> {quote}
> select
> this_.USERNAME as y0_,
> this_.SCORE_SUM as y1_
> from USER this_
> order by this_.SCORE_SUM desc limit ?
> {quote}
> After upgrading to Hibernate version 3.5-final the same query fails because SQL query is not created correctly anymore. Corrupted SQL:
> {quote}
> select
> {color:red}*y0_ as y0_,*{color}
> this_.SCORE_SUM as y1_
> from USER this_
> order by this_.SCORE_SUM desc
> {quote}
> Problem is that "y0_" is used twice, instead of using it only as alias: "this_.USERNAME as y0_".
> Here is the relevant part of the root stacktrace:
> {code:title=Root Exception}
> com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'y0_' in 'field list'
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)
> at com.mysql.jdbc.Util.getInstance(Util.java:384)
> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1054)
> at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3562)
> at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3494)
> at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1960)
> at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2114)
> at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2696)
> at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2105)
> at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2264)
> at org.jboss.resource.adapter.jdbc.WrappedPreparedStatement.executeQuery(WrappedPreparedStatement.java:342)
> at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208)
> at org.hibernate.loader.Loader.getResultSet(Loader.java:1849)
> at org.hibernate.loader.Loader.doQuery(Loader.java:718)
> at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270)
> at org.hibernate.loader.Loader.doList(Loader.java:2294)
> at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2172)
> at org.hibernate.loader.Loader.list(Loader.java:2167)
> at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:119)
> at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1706)
> at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:347)
> at xyz.dao.UserDaoImpl.getTopUsersAsVO(UserDaoImpl.java:95)
> {code}
> I will try to research the new Hibernate code and the difference to the old one and try to provide a patch.
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