org.apache.hadoop.hive.ql.optimizer
Class PrunerExpressionOperatorFactory.ColumnExprProcessor
java.lang.Object
org.apache.hadoop.hive.ql.optimizer.PrunerExpressionOperatorFactory.ColumnExprProcessor
- All Implemented Interfaces:
- NodeProcessor
- Direct Known Subclasses:
- ExprProcFactory.PPRColumnExprProcessor, LBExprProcFactory.LBPRColumnExprProcessor
- Enclosing class:
- PrunerExpressionOperatorFactory
public abstract static class PrunerExpressionOperatorFactory.ColumnExprProcessor
- extends Object
- implements NodeProcessor
Processor for column expressions.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
PrunerExpressionOperatorFactory.ColumnExprProcessor
public PrunerExpressionOperatorFactory.ColumnExprProcessor()
process
public Object process(Node nd,
Stack<Node> stack,
NodeProcessorCtx procCtx,
Object... nodeOutputs)
throws SemanticException
- Description copied from interface:
NodeProcessor
- Generic process for all ops that don't have specific implementations.
- Specified by:
process
in interface NodeProcessor
- Parameters:
nd
- operator to processprocCtx
- operator processor contextnodeOutputs
- A variable argument list of outputs from other nodes in the walk
- Returns:
- Object to be returned by the process call
- Throws:
SemanticException
processColumnDesc
protected abstract ExprNodeDesc processColumnDesc(NodeProcessorCtx procCtx,
ExprNodeColumnDesc cd)
- Process column desc. It should be done by subclass.
- Parameters:
procCtx
- cd
-
- Returns:
Copyright © 2012 The Apache Software Foundation