org.apache.hadoop.hive.ql.optimizer.lineage

Class OpProcFactory.DefaultLineage

java.lang.Object

org.apache.hadoop.hive.ql.optimizer.lineage.OpProcFactory.DefaultLineage

All Implemented Interfaces:

NodeProcessor

Direct Known Subclasses:

OpProcFactory.GroupByLineage, OpProcFactory.JoinLineage, OpProcFactory.LateralViewJoinLineage, OpProcFactory.SelectLineage, OpProcFactory.TableScanLineage, OpProcFactory.TransformLineage, OpProcFactory.UnionLineage

Enclosing class:

OpProcFactory

public static class OpProcFactory.DefaultLineage
extends java.lang.Object
implements NodeProcessor

Default processor. This basically passes the input dependencies as such to the output dependencies.

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Constructor and Description
DefaultLineage()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	process(Node nd, java.util.Stack<Node> stack, NodeProcessorCtx procCtx, java.lang.Object... nodeOutputs) Generic process for all ops that don't have specific implementations.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.apache.commons.logging.Log LOG

Constructor Detail

DefaultLineage

public DefaultLineage()

Method Detail

process

public java.lang.Object process(Node nd,
                                java.util.Stack<Node> stack,
                                NodeProcessorCtx procCtx,
                                java.lang.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 process

procCtx - operator processor context

nodeOutputs - A variable argument list of outputs from other nodes in the walk

Returns:

Object to be returned by the process call

Throws:

SemanticException