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losdna
 Post subject: Problem with SequenceStyleGenerator under Postgres
PostPosted: Wed Apr 15, 2009 9:45 am 
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Joined: Fri Aug 22, 2008 5:49 am
Posts: 22
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Hibernate version:
3.3.1.GA
Full stack trace of any exception that occurs:
Code:
ERROR 15:38:06 0    could not read a hi value (TableStructure.java:140)
org.postgresql.util.PSQLException: ERROR: syntax error at or near "id_val"
   at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1512)
   at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1297)
   at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:188)
   at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:437)
   at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:353)
   at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:257)
   at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
   at org.hibernate.id.enhanced.TableStructure.doWorkInCurrentTransaction(TableStructure.java:130)
   at org.hibernate.engine.TransactionHelper$1Work.doWork(TransactionHelper.java:61)
   at org.hibernate.engine.transaction.Isolater$JdbcDelegate.delegateWork(Isolater.java:211)
   at org.hibernate.engine.transaction.Isolater.doIsolatedWork(Isolater.java:67)
   at org.hibernate.engine.TransactionHelper.doWorkInNewTransaction(TransactionHelper.java:74)
   at org.hibernate.id.enhanced.TableStructure$1.getNextValue(TableStructure.java:98)
   at org.hibernate.id.enhanced.OptimizerFactory$PooledOptimizer.generate(OptimizerFactory.java:197)
   at org.hibernate.id.enhanced.SequenceStyleGenerator.generate(SequenceStyleGenerator.java:181)
   at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122)
   at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154)
   at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110)
   at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61)
   at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:645)
   at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:619)
   at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:623)


Name and version of the database you are using:
PostgreSQL 8.3
The generated SQL (show_sql=true):
select next_val id_val from hibernate_sequence for update;


We using org.hibernate.id.enhanced.SequenceStyleGenerator for IDGenerator. And get the error, that "syntax error at or near "id_val", and we found this from Postgres dokumentation,

In the SQL92 standard, the optional keyword AS is just noise and can be omitted without affecting the meaning. The PostgreSQL parser requires this keyword when renaming output columns because the type extensibility features lead to parsing ambiguities in this context. AS is optional in FROM items, however.

The problem is in the constructor by the class org.hibernate.id.enhanced.TableStructure.

Can you tell us, how can we fix this problem, thank you.
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losdna
 Post subject: Re: Problem with SequenceStyleGenerator under Postgres
PostPosted: Tue May 05, 2009 9:31 am 
Beginner
Beginner

Joined: Fri Aug 22, 2008 5:49 am
Posts: 22
I have create a jira task for this bug:

http://opensource.atlassian.com/project ... e/HHH-3880
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puppetmaster_dk
 Post subject: Re: Problem with SequenceStyleGenerator under Postgres
PostPosted: Tue May 05, 2009 3:11 pm 
Newbie

Joined: Mon May 04, 2009 5:23 pm
Posts: 1
Hi there,

It would have been nice to see your mapping file, but heres how i do it with Postgress:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class dynamic-insert="false" dynamic-update="false" mutable="true" name="dk.detkun.db.Smoking" optimistic-lock="version" polymorphism="implicit" select-before-update="false" table="smoking">
<id column="id" name="id">
<generator class="sequence">
<param name="sequence">smoking_id_seq</param>
</generator>
</id>
<property name="smoking" type="string"/>
</class>
</hibernate-mapping>
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losdna
 Post subject: Re: Problem with SequenceStyleGenerator under Postgres
PostPosted: Fri May 08, 2009 6:46 am 
Beginner
Beginner

Joined: Fri Aug 22, 2008 5:49 am
Posts: 22
hello, we use hibernate annotation, so i don't have mapping file. And the problem is in the class org.hibernate.id.enhanced.TableStructure.
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