org.apache.pig.impl.logicalLayer.validators
Class LogicalPlanValidationExecutor
java.lang.Object
org.apache.pig.impl.logicalLayer.validators.LogicalPlanValidationExecutor
- All Implemented Interfaces:
- PlanValidationExecutor<LogicalPlan>
public class LogicalPlanValidationExecutor
- extends Object
- implements PlanValidationExecutor<LogicalPlan>
This class is responsible for all logical plan validations
after the parsing stage.
All the validation logics should be added in the constructor.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LogicalPlanValidationExecutor
public LogicalPlanValidationExecutor(LogicalPlan plan,
PigContext pigContext)
- All the necessary validation logics can be plugged-in here.
Logics are executed from head to tail of the List.
In the PIG-111 Configuration patch, we can call
pigContext.getProperties which holds current configuration
set. This allows us to let users enable/disable some validation
logics. The code will look like this:-
if ((Boolean)pigContext.getProperties().getProperty("pig.compiler.validationX") ) {
validatorList.add(new ValidationLogicX(plan)) ;
}
validate
public void validate(LogicalPlan plan,
CompilationMessageCollector msgCollector)
throws PlanValidationException
- Specified by:
validate
in interface PlanValidationExecutor<LogicalPlan>
- Throws:
PlanValidationException
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