org.apache.hadoop.hive.ql.optimizer.unionproc
Class UnionProcFactory

java.lang.Object
  org.apache.hadoop.hive.ql.optimizer.unionproc.UnionProcFactory

public final class UnionProcFactory
extends Object

Operator factory for union processing.

Nested Class Summary

static class	UnionProcFactory.MapRedUnion MapRed subquery followed by Union.
static class	UnionProcFactory.MapUnion Map-only subquery followed by Union.
static class	UnionProcFactory.NoUnion Default processor.
static class	UnionProcFactory.UnionNoProcessFile Union followed by no processing.
static class	UnionProcFactory.UnknownUnion Union subquery followed by Union.

Method Summary

static NodeProcessor	getMapRedUnion()
static NodeProcessor	getMapUnion()
static NodeProcessor	getNoUnion()
static int	getPositionParent(UnionOperator union, Stack<Node> stack)
static NodeProcessor	getUnionNoProcessFile()
static NodeProcessor	getUnknownUnion()

Methods inherited from class java.lang.Object

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

Method Detail

getPositionParent

public static int getPositionParent(UnionOperator union,
                                    Stack<Node> stack)

getMapRedUnion

public static NodeProcessor getMapRedUnion()

getMapUnion

public static NodeProcessor getMapUnion()

getUnknownUnion

public static NodeProcessor getUnknownUnion()

getNoUnion

public static NodeProcessor getNoUnion()

getUnionNoProcessFile

public static NodeProcessor getUnionNoProcessFile()