[teiid-issues] [JBoss JIRA] Created: (TEIID-1317) Limit keyword causes class cast exception running query against DB2 translator

[Howard Abrams (JIRA)]

Limit keyword causes class cast exception running query against DB2 translator
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                 Key: TEIID-1317
                 URL: https://jira.jboss.org/browse/TEIID-1317
             Project: Teiid
          Issue Type: Bug
    Affects Versions: 7.1, 7.0, 6.2.0
            Reporter: Howard Abrams
            Assignee: Steven Hawkins


When running a query that uses the limit keyword against a DB2 database/translator, teiid will throw the exception below (From the 7.1 codebase, but I got the same exception a while back playing with 7.0 as well as 6.2). The same query against the same schema in a different database (H2 for example) works fine. It appears it also works fin on DB2 if you leave off the starting rowing from the expression.

Examples:

/*works on H2*/
SELECT * FROM MYSCHEMA.FOO LIMIT 0,10

/*fails on DB2*/
SELECT * FROM MYSCHEMA.FOO LIMIT 0,10

/*fails on DB2*/
SELECT * FROM MYSCHEMA.FOO LIMIT 10,10

/*works on DB2*/
SELECT * FROM MYSCHEMA.FOO LIMIT 10

java.lang.ClassCastException: org.teiid.language.Function cannot be cast to org.teiid.language.Literal
	at org.teiid.dqp.internal.datamgr.LanguageBridgeFactory.translate(LanguageBridgeFactory.java:719)
	at org.teiid.dqp.internal.datamgr.LanguageBridgeFactory.translate(LanguageBridgeFactory.java:211)
	at org.teiid.dqp.internal.datamgr.LanguageBridgeFactory.translate(LanguageBridgeFactory.java:130)
	at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:215)
	at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:181)
	at org.teiid.dqp.internal.process.DataTierTupleSource.access$000(DataTierTupleSource.java:53)
	at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:89)
	at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:86)
	at org.teiid.dqp.internal.process.DQPCore$FutureWork.run(DQPCore.java:107)
	at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:188)
	at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:116)
	at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:290)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:637)



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