org.apache.pig.backend.executionengine
Interface ExecLogicalPlan

All Superinterfaces:
Serializable
All Known Implementing Classes:
LogicalPlan

public interface ExecLogicalPlan
extends Serializable

A logical plan has a root of the operator tree. A table of operators collects the set of operators making up a logical tree. It is possible to navigate a logical tree by looking up the input operator keys of the logical operator in the operator table.


Method Summary
 void explain(OutputStream out)
           
 Map<OperatorKey,LogicalOperator> getOpTable()
           
 OperatorKey getRoot()
           
 

Method Detail

getRoot

OperatorKey getRoot()

getOpTable

Map<OperatorKey,LogicalOperator> getOpTable()

explain

void explain(OutputStream out)


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