org.teiid.query.processor.proc
Class ErrorInstruction

java.lang.Object
  org.teiid.query.processor.proc.ProgramInstruction
      org.teiid.query.processor.proc.ErrorInstruction

All Implemented Interfaces:

Cloneable

public class ErrorInstruction
extends ProgramInstruction

This instruction updates the current variable context with the Variable defined using the declare statement that is used in constructing this instruction.

Field Summary

static String

ERROR_PREFIX

Constructor Summary

ErrorInstruction()
Constructor for DeclareInstruction.

Method Summary

ErrorInstruction	clone() Override Object.clone() to make the method public.
PlanNode	getDescriptionProperties()
void	process(ProcedurePlan env) Allow this instruction to do whatever processing it needs, and to in turn manipulate the running program.
void	setExpression(Expression expression)
String	toString()

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

Field Detail

ERROR_PREFIX

public static final String ERROR_PREFIX

See Also:

Constant Field Values

Constructor Detail

ErrorInstruction

public ErrorInstruction()

Constructor for DeclareInstruction.

Method Detail

setExpression

public void setExpression(Expression expression)

clone

public ErrorInstruction clone()

Description copied from class: ProgramInstruction

Override Object.clone() to make the method public. This method simply calls super.clone(), deferring to the default shallow cloning. Some ProcessorInstruction subclasses may need to override with custom safe or deep cloning.

Overrides:

clone in class ProgramInstruction

Returns:

shallow clone

See Also:

ProgramInstruction.clone()

toString

public String toString()

Overrides:

toString in class Object

getDescriptionProperties

public PlanNode getDescriptionProperties()

Specified by:

getDescriptionProperties in class ProgramInstruction

process

public void process(ProcedurePlan env)
             throws TeiidComponentException,
                    TeiidProcessingException

Description copied from class: ProgramInstruction

Allow this instruction to do whatever processing it needs, and to in turn manipulate the running program. A typical instruction should simply increment the program counter of the current program, but specialized instructions may add sub programs to the stack or not increment the counter (so that they are executed again.)

Specified by:

process in class ProgramInstruction

Throws:

TeiidComponentException

TeiidProcessingException