[hibernate-issues] [Hibernate-JIRA] Updated: (HHH-2022) property names beginning with underscores cause Hibernate to generate invalid aliases

Steve Ebersole (JIRA) noreply at atlassian.com
Wed Aug 23 09:16:24 EDT 2006 

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2022?page=all ]

Steve Ebersole updated HHH-2022:
--------------------------------

        Summary: property names beginning with underscores cause Hibernate to generate invalid aliases  (was: ORA-00911: invalid character when field begins with underscore)
    Fix Version: 3.2.0.ga
      Assign To: Steve Ebersole

> property names beginning with underscores cause Hibernate to generate invalid aliases
> -------------------------------------------------------------------------------------
>
>          Key: HHH-2022
>          URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2022
>      Project: Hibernate3
>         Type: Bug

>   Components: core
>     Versions: 3.0.5, 3.1.3, 3.2.0.cr3
>  Environment: Hibernate 3.1.3
> Oracle 10.2.0.1
>     Reporter: Jerry Cattell
>     Assignee: Steve Ebersole
>     Priority: Minor
>      Fix For: 3.2.0.ga
>  Attachments: InvalidCharacterErrorCase.java, SimpleObject.hbm.xml, SimpleObject.java, StringHelper-patch.txt
>
>
> Hibernate is generating invalid SQL (for Oracle) for collections that are stored in fields with names that start with underscores.
> In this SQL:
> Hibernate: select _tags0_.SIMPLE_OBJECT_ID as SIMPLE1_0_, _tags0_.TAG as TAG0_ from SIMPLE_OBJECT_TAG _tags0_ where _tags0_.SIMPLE_OBJECT_ID=?
> an alias called "_tags0_" is created for the collection table.  Unfortunately, Oracle does not allow non-alphabetic characters for the first character in an alias.
> Here's the stacktrace:
> Hibernate: select _tags0_.SIMPLE_OBJECT_ID as SIMPLE1_0_, _tags0_.TAG as TAG0_ from SIMPLE_OBJECT_TAG _tags0_ where _tags0_.SIMPLE_OBJECT_ID=?
> WARN JDBCExceptionReporter 20060822-011120.817 - SQL Error: 911, SQLState: 42000
> ERROR JDBCExceptionReporter 20060822-011120.818 - ORA-00911: invalid character
> INFO DefaultLoadEventListener 20060822-011120.820 - Error performing load command
> org.hibernate.exception.SQLGrammarException: could not initialize a collection: [SimpleObject._tags#1]
> 	at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
> 	at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
> 	at org.hibernate.loader.Loader.loadCollection(Loader.java:1926)
> 	at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
> 	at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:520)
> 	at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
> 	at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1676)
> 	at org.hibernate.collection.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:454)
> 	at org.hibernate.engine.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:755)
> 	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:229)
> 	at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
> 	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:47)
> 	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:41)
> 	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2730)
> 	at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
> 	at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
> 	at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
> 	at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:161)
> 	at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
> 	at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
> 	at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
> 	at org.hibernate.impl.SessionImpl.get(SessionImpl.java:792)
> 	at InvalidCharacterErrorCase.runTest(InvalidCharacterErrorCase.java:28)
> 	at InvalidCharacterErrorCase.main(InvalidCharacterErrorCase.java:11)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:585)
> 	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
> Caused by: java.sql.SQLException: ORA-00911: invalid character
> 	at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
> 	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:331)
> 	at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:288)
> 	at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:743)
> 	at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:216)
> 	at oracle.jdbc.driver.T4CPreparedStatement.executeForDescribe(T4CPreparedStatement.java:799)
> 	at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:1039)
> 	at oracle.jdbc.driver.T4CPreparedStatement.executeMaybeDescribe(T4CPreparedStatement.java:839)
> 	at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1132)
> 	at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3285)
> 	at oracle.jdbc.driver.OraclePreparedStatement.executeQuery(OraclePreparedStatement.java:3329)
> 	at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:139)
> 	at org.hibernate.loader.Loader.getResultSet(Loader.java:1669)
> 	at org.hibernate.loader.Loader.doQuery(Loader.java:662)
> 	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
> 	at org.hibernate.loader.Loader.loadCollection(Loader.java:1919)
> 	... 26 more
> I have attached a test case that causes this error.
> After a little bit of research, it appears that a change to StringHelper.generateAlias(String description, int unique) (or StringHelper.generateAliasRoot(String description)) to remove all characters up to the first alphabetic character would solve this problem. 

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