org.apache.pig.impl.logicalLayer.validators
Class InputOutputFileVisitor

java.lang.Object
  org.apache.pig.impl.plan.PlanVisitor<LogicalOperator,LogicalPlan>
      org.apache.pig.impl.logicalLayer.LOVisitor
          org.apache.pig.impl.logicalLayer.validators.InputOutputFileVisitor

public class InputOutputFileVisitor
extends LOVisitor

Visitor for checking input/output files Exceptions in here do not affect later operations so we don't throw any exception but log all of them in msgCollector. We assume input/output files can exist only in the top level plan.

Field Summary

Fields inherited from class org.apache.pig.impl.plan.PlanVisitor

mCurrentWalker, mPlan

Constructor Summary

InputOutputFileVisitor(LogicalPlan plan, CompilationMessageCollector messageCollector, PigContext pigContext)

Method Summary

protected void

visit(LOStore store) The logic here is to delegate the validation of output specification to output format implementation.

Methods inherited from class org.apache.pig.impl.logicalLayer.LOVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class org.apache.pig.impl.plan.PlanVisitor

getPlan, popWalker, pushWalker, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

InputOutputFileVisitor

public InputOutputFileVisitor(LogicalPlan plan,
                              CompilationMessageCollector messageCollector,
                              PigContext pigContext)

Method Detail

visit

protected void visit(LOStore store)
              throws PlanValidationException

The logic here is to delegate the validation of output specification to output format implementation.

Overrides:

visit in class LOVisitor

Throws:

PlanValidationException