[JBoss JIRA] Created: (HIBERNATE-54) problems w/ column names beginning with '_' (underscore) w/ apache derby database
by bugra uytun (JIRA)
problems w/ column names beginning with '_' (underscore) w/ apache derby database
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Key: HIBERNATE-54
URL: http://jira.jboss.com/jira/browse/HIBERNATE-54
Project: Hibernate
Issue Type: Bug
Environment: windows xp, java 1.5.0_09, eclispe 3.2.1, hibernate 3.2.1, derby 10.2.2.0, hibernate tools 3.2 beta8
Reporter: bugra uytun
Assigned To: Steve Ebersole
derby has problems with column names beginning with underscore, see also http://db.apache.org/derby/docs/10.1/ref/crefsqlj1003454.html
therefore such column names should be between double quotation marks (notice that double quotation marks also sets the case sensitivity on column names.)
but hibernate translates a HQL statement like this "from table1 t where t.id = '1'" to something like:
select table1_.id as id4, table1_._colname1 as column27_4_ schema1.table1 table1_ where table1_.id = '1'
but because of the columns that are beginning with an underscore the translation should be:
select table1_."id" as id4, table1_."_colname1" as column27_4_ schema1."table1" table1_ where table1_."id" = '1'
the errors i got are:
DEBUG [JDBCExceptionReporter]: could not execute query [<translated sql statement>]
ERROR 42X01: Syntax error: Encountered "_" at line 1, column 987.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.sql.compile.ParserImpl.parseStatement(Unknown Source)
at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver30.newEmbedPreparedStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(Unknown Source)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:497)
at org.hibernate.jdbc.AbstractBatcher.getPreparedStatement(AbstractBatcher.java:415)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:139)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1538)
at org.hibernate.loader.Loader.doQuery(Loader.java:661)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2211)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)
at org.hibernate.loader.Loader.list(Loader.java:2090)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:388)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at <mypackage>.MyHibernate.main(MyHibernate.java:13)
WARN main org.hibernate.util.JDBCExceptionReporter - SQL Error: 20000, SQLState: 42X01
ERROR main org.hibernate.util.JDBCExceptionReporter - Syntax error: Encountered "_" at line 1, column 987.
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14 years, 2 months
[JBoss JIRA] Created: (JBRULES-2372) Task - User ReceivedTime whenever Claim operation happens
by vijpan (JIRA)
Task - User ReceivedTime whenever Claim operation happens
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Key: JBRULES-2372
URL: https://jira.jboss.org/jira/browse/JBRULES-2372
Project: Drools
Issue Type: Feature Request
Security Level: Public (Everyone can see)
Components: drools-process-task
Affects Versions: 5.1.0.M1
Reporter: vijpan
Assignee: Mark Proctor
Hi,
Is there a way possible where "Received Time" can be stored at Task level. This datetime value should get updated with the current timestamp whenever "Claim" operation happens on the Task. The use case is that most of the time if its a 1 potential owner of the task - the task goes through "created/ready/reserved" status whenever a new Task gets created, in this case creation time would be same as received time --- but whenever the task is assigned to group or multiple potential owner or even when it is in reserved status it can be forwarded/delegated to other user/group - then in that case whenever user receives as task or in WSHT tem claim operation happens can we store the timestamp at the task level.
Currently at task level we have creation time/activation time/expiration time ---- may be activation time can be used but i guess its use is very specific as detailed in WSHT/BPEL4People spec. In real world scenario it becomes quite important that when the user actually claimed the task or was assigned the task.
Vijay
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14 years, 2 months