org.eigenbase.lurql
Class LurqlPlanExistsEdge

java.lang.Object
  org.jgrapht.graph.DefaultEdge
      org.eigenbase.lurql.LurqlPlanEdge
          org.eigenbase.lurql.LurqlPlanExistsEdge

All Implemented Interfaces:

Serializable, Cloneable

public class LurqlPlanExistsEdge
extends LurqlPlanEdge

LurqlPlanExistsEdge implements the exists predicate within a LURQL plan graph.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/lurql/LurqlPlanExistsEdge.java#1 $

Author:

John V. Sichi

See Also:

Serialized Form

Field Summary

static LurqlPlanExistsEdge[]	EMPTY_ARRAY
private boolean	isNegated
private Set	projectSet
private org.jgrapht.DirectedGraph	subgraph

Fields inherited from class org.eigenbase.lurql.LurqlPlanEdge

stringRep

Constructor Summary

LurqlPlanExistsEdge(LurqlPlanVertex source, LurqlPlanVertex target, org.jgrapht.DirectedGraph subgraph, Set projectSet, boolean isNegated)

Method Summary

Object	clone()
(package private) Set	getProjectSet()
(package private) org.jgrapht.DirectedGraph	getSubgraph()
(package private) boolean	isNegated()

Methods inherited from class org.eigenbase.lurql.LurqlPlanEdge

equals, getPlanSource, getPlanTarget, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

EMPTY_ARRAY

public static final LurqlPlanExistsEdge[] EMPTY_ARRAY

subgraph

private final org.jgrapht.DirectedGraph subgraph

projectSet

private final Set projectSet

isNegated

private final boolean isNegated

Constructor Detail

LurqlPlanExistsEdge

LurqlPlanExistsEdge(LurqlPlanVertex source,
                    LurqlPlanVertex target,
                    org.jgrapht.DirectedGraph subgraph,
                    Set projectSet,
                    boolean isNegated)

Method Detail

getSubgraph

org.jgrapht.DirectedGraph getSubgraph()

getProjectSet

Set getProjectSet()

isNegated

boolean isNegated()

clone

public Object clone()

Overrides:

clone in class Object