org.teiid.query.processor.proc
Class LoopInstruction

java.lang.Object
  org.teiid.query.processor.proc.ProgramInstruction
      org.teiid.query.processor.proc.CreateCursorResultSetInstruction
          org.teiid.query.processor.proc.LoopInstruction

All Implemented Interfaces:

java.lang.Cloneable, RepeatedInstruction

public class LoopInstruction
extends CreateCursorResultSetInstruction
implements RepeatedInstruction

Field Summary

Fields inherited from class org.teiid.query.processor.proc.CreateCursorResultSetInstruction

plan, RS_NAME, rsName

Constructor Summary

LoopInstruction(Program loopProgram, java.lang.String rsName, ProcessorPlan plan)

Method Summary

LoopInstruction	clone() Returns a deep clone
PlanNode	getDescriptionProperties()
Program	getNestedProgram()
void	postInstruction(ProcedurePlan procEnv)
void	process(ProcedurePlan procEnv) If the result set named rsName does not exist yet in the ProcedurePlan, then this instruction will define that result set.
boolean	testCondition(ProcedurePlan procEnv)
java.lang.String	toString()

Methods inherited from class org.teiid.query.processor.proc.CreateCursorResultSetInstruction

getCommand

Methods inherited from class org.teiid.query.processor.proc.ProgramInstruction

getChildPlans

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LoopInstruction

public LoopInstruction(Program loopProgram,
                       java.lang.String rsName,
                       ProcessorPlan plan)

Method Detail

process

public void process(ProcedurePlan procEnv)
             throws TeiidComponentException

Description copied from class: CreateCursorResultSetInstruction

If the result set named rsName does not exist yet in the ProcedurePlan, then this instruction will define that result set. It will then throw a BlockedException if this result set is selecting from other than temp groups (because those results will be delivered asynchronously). IF the result set named rsName does already exist, this instruction will just increment the program counter and do nothing else.

Overrides:

process in class CreateCursorResultSetInstruction

Throws:

TeiidComponentException

clone

public LoopInstruction clone()

Returns a deep clone

Overrides:

clone in class CreateCursorResultSetInstruction

Returns:

shallow clone

toString

public java.lang.String toString()

Overrides:

toString in class CreateCursorResultSetInstruction

getDescriptionProperties

public PlanNode getDescriptionProperties()

Overrides:

getDescriptionProperties in class CreateCursorResultSetInstruction

testCondition

public boolean testCondition(ProcedurePlan procEnv)
                      throws TeiidComponentException,
                             TeiidProcessingException

Specified by:

testCondition in interface RepeatedInstruction

Throws:

TeiidComponentException

TeiidProcessingException

getNestedProgram

public Program getNestedProgram()

Specified by:

getNestedProgram in interface RepeatedInstruction

See Also:

RepeatedInstruction.getNestedProgram()

postInstruction

public void postInstruction(ProcedurePlan procEnv)
                     throws TeiidComponentException

Specified by:

postInstruction in interface RepeatedInstruction

Throws:

TeiidComponentException