simpledb

Class LogicalSubplanJoinNode

java.lang.Object

simpledb.LogicalJoinNode

simpledb.LogicalSubplanJoinNode

public class LogicalSubplanJoinNode
extends LogicalJoinNode

A LogicalSubplanJoinNode represens the state needed of a join of a table to a subplan in a LogicalQueryPlan -- inherits state from LogicalJoinNode; t2 and f2 should always be null

Field Summary

Fields

Modifier and Type	Field and Description
(package private) DbIterator	subPlan The subplan (used on the inner) of the join

Fields inherited from class simpledb.LogicalJoinNode

f1PureName, f1QuantifiedName, f2PureName, f2QuantifiedName, p, t1Alias, t2Alias

Constructor Summary

Constructors

Constructor and Description
LogicalSubplanJoinNode(java.lang.String table1, java.lang.String joinField1, DbIterator sp, Predicate.Op pred)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
int	hashCode()
LogicalSubplanJoinNode	swapInnerOuter() Return a new LogicalJoinNode with the inner and outer (t1.f1 and t2.f2) tables swapped.

Methods inherited from class simpledb.LogicalJoinNode

toString

Methods inherited from class java.lang.Object

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

Field Detail

subPlan

DbIterator subPlan

The subplan (used on the inner) of the join

Constructor Detail

LogicalSubplanJoinNode

public LogicalSubplanJoinNode(java.lang.String table1,
                              java.lang.String joinField1,
                              DbIterator sp,
                              Predicate.Op pred)

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class LogicalJoinNode

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class LogicalJoinNode

swapInnerOuter

public LogicalSubplanJoinNode swapInnerOuter()

Description copied from class: LogicalJoinNode

Return a new LogicalJoinNode with the inner and outer (t1.f1 and t2.f2) tables swapped.

Overrides:

swapInnerOuter in class LogicalJoinNode