Package org.apache.hadoop.hive.ql.lib

Interface Summary

Dispatcher	Dispatcher interface for Operators Used in operator graph walking to dispatch process/visitor functions for operators.
GraphWalker	Interface for operator graph walker.
Node	This interface defines the functions needed by the walkers and dispatchers.
NodeProcessor	Base class for processing operators which is no-op.
NodeProcessorCtx	Operator Processor Context.
Rule	Rule interface for Operators Used in operator dispatching to dispatch process/visitor functions for operators.

Class Summary

DefaultGraphWalker	base class for operator graph walker this class takes list of starting ops and walks them one by one.
DefaultRuleDispatcher	Dispatches calls to relevant method in processor.
PreOrderWalker	base class for operator graph walker this class takes list of starting ops and walks them one by one.
RuleRegExp	Rule interface for Nodes Used in Node dispatching to dispatch process/visitor functions for Nodes.
TaskGraphWalker	base class for operator graph walker this class takes list of starting ops and walks them one by one.
Utils	Contains common utility functions to manipulate nodes, walkers etc.