NPE occurred when using dynamic sql in foreach clause of trigger. Stacktrace is pasted below.

FOR EACH ROW
BEGIN
DECLARE string setclause = null;
IF (CHANGING.NAME)
BEGIN
setclause = 'security_ldap.baseuser.NAME';
END
EXECUTE IMMEDIATE 'UPDATE security_ldap.baseuser SET ' || setclause || '= ''NEW.NAME'' WHERE security_ldap.baseuser.DN = ''NEW.USERID''';
END

OR

Even using "USING" Yielded the same
FOR EACH ROW

BEGIN

DECLARE string setclause = null;

DECLAR string whereclause = ' WHERE security_ldap.baseuser.DN = USING.USERID'

IF (CHANGING.NAME)

BEGIN

setclause = 'security_ldap.baseuser.NAME=USING.NAME';

END

EXECUTE IMMEDIATE 'UPDATE security_ldap.baseuser SET ' || setclause || whereclause || USING NAME=NEW.NAME,USERID=NEW.USERID;

END

I see my command got resolved well. But i seeing an NPE during validatioin - context.pushCall(parentProcCommand.getVirtualGroup().getCanonicalName()); - parentProcCommand.getVirtualGroup() is null.

20 Sep 2012 16:15:54,670 PDT TRACE [org.teiid.PROCESSOR] (Worker15_QueryProcessorQueue296) ASSIGNMENT INSTRUCTION: setclause The variable setclause in the variablecontext is updated with the value : security_ldap.baseuser.NAME

20 Sep 2012 16:15:54,671 PDT TRACE [org.teiid.PROCESSOR] (Worker15_QueryProcessorQueue296) Executing instruction ExecDynamicSqlInstruction

20 Sep 2012 16:15:54,671 PDT TRACE [org.teiid.PROCESSOR] (Worker15_QueryProcessorQueue296) Executing dynamic sql UPDATE security_ldap.baseuser SET security_ldap.baseuser.NAME= 'NEW.NAME' WHERE security_ldap.baseuser.DN = 'NEW.USERID'

20 Sep 2012 16:15:54,678 PDT TRACE [org.teiid.PLANNER.RESOLVER] (Worker15_QueryProcessorQueue296) Resolving command UPDATE security_ldap.baseuser SET NAME = 'NEW.NAME' WHERE security_ldap.baseuser.DN = 'NEW.USERID'

20 Sep 2012 16:15:54,681 PDT DEBUG [org.teiid.PROCESSOR] (Worker15_QueryProcessorQueue296) Request Thread U0W5vGKiU+f+.0 - error occurred

java.lang.NullPointerException

at org.teiid.query.processor.proc.ExecDynamicSqlInstruction.validateDynamicCommand(ExecDynamicSqlInstruction.java:328)

at org.teiid.query.processor.proc.ExecDynamicSqlInstruction.process(ExecDynamicSqlInstruction.java:171)

at org.teiid.query.processor.proc.ProcedurePlan.processProcedure(ProcedurePlan.java:384)

at org.teiid.query.processor.proc.ProcedurePlan.nextBatchDirect(ProcedurePlan.java:312)

at org.teiid.query.processor.proc.ProcedurePlan.nextBatch(ProcedurePlan.java:285)

at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:139)

at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:105)

at org.teiid.query.processor.proc.ForEachRowPlan.nextBatch(ForEachRowPlan.java:119)

at org.teiid.query.processor.relational.PlanExecutionNode.nextBatchDirect(PlanExecutionNode.java:118)

at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:280)

at org.teiid.query.processor.relational.ProjectNode.nextBatchDirect(ProjectNode.java:155)

at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:280)

at org.teiid.query.processor.relational.RelationalPlan.nextBatch(RelationalPlan.java:176)

at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:139)

at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:105)

at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:147)

at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:374)

at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:287)

at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:49)

at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:215)

at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:232)

at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:118)

at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:288)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)

at java.lang.Thread.run(Thread.java:722)

20 Sep 2012 16:15:54,682 PDT DEBUG [org.teiid.COMMAND_LOG] (Worker15_QueryProcessorQueue296) ERROR USER COMMAND: endTime=2012-09-20 16:15:54.682 requestID=U0W5vGKiU+f+.0 txID=TransactionImple < ac, BasicAction: a8458a5:e104:505ba20c:17 status: ActionStatus.RUNNING > sessionID=U0W5vGKiU+f+ principal=gamvi01@chorus-teiid-security vdbName=Chorus vdbVersion=1 finalRowCount=null

20 Sep 2012 16:15:54,682 PDT ERROR [org.teiid.PROCESSOR] (Worker15_QueryProcessorQueue296) Unexpected exception for request U0W5vGKiU+f+.0

java.lang.NullPointerException