Class OptimizerPlan.Join

java.lang.Object

org.apache.derby.iapi.sql.compile.OptimizerPlan

org.apache.derby.iapi.sql.compile.OptimizerPlan.Join

Enclosing class:

OptimizerPlan

public static final class OptimizerPlan.Join
extends OptimizerPlan

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Nested Class Summary

Nested classes/interfaces inherited from class OptimizerPlan

OptimizerPlan.ConglomerateRS, OptimizerPlan.DeadEnd, OptimizerPlan.Join, OptimizerPlan.RowSource<D>, OptimizerPlan.TableFunctionRS

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	_isBound
private int	_leafNodeCount
(package private) final OptimizerPlan	leftChild
(package private) final OptimizerPlan	rightChild
(package private) final JoinStrategy	strategy

Constructor Summary

Constructors

Constructor	Description
Join(JoinStrategy strategy, OptimizerPlan leftChild, OptimizerPlan rightChild)

Method Summary

Modifier and Type	Method	Description
void	bind(DataDictionary dataDictionary, LanguageConnectionContext lcc, CompilerContext cc)	Bind the conglomerate and table function names in this plan.
int	countLeafNodes()	Count the number of leaf nodes under (and including) this node.
boolean	equals(Object other)
boolean	isBound()	Return true if this the schema and RowSource names have been resolved.
boolean	isLeftPrefixOf(OptimizerPlan other)	Return true if this plan is a (left) leading prefix of the other plan.
OptimizerPlan	leftmostLeaf()	Get the leftmost leaf node in this plan.
String	toString()

Methods inherited from class OptimizerPlan

makeRowSource

Methods inherited from class Object

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

Field Details

strategy

final JoinStrategy strategy

leftChild

final OptimizerPlan leftChild

rightChild

final OptimizerPlan rightChild

_isBound

private boolean _isBound

_leafNodeCount

private int _leafNodeCount

Constructor Details

Join

public Join(JoinStrategy strategy,
 OptimizerPlan leftChild,
 OptimizerPlan rightChild)

Method Details

bind

public void bind(DataDictionary dataDictionary,
 LanguageConnectionContext lcc,
 CompilerContext cc)
          throws StandardException

Description copied from class: OptimizerPlan

Bind the conglomerate and table function names in this plan.

Specified by:

bind in class OptimizerPlan

Parameters:

dataDictionary - DataDictionary to bind against.

Throws:

StandardException

isBound

public boolean isBound()

Description copied from class: OptimizerPlan

Return true if this the schema and RowSource names have been resolved.

Specified by:

isBound in class OptimizerPlan

countLeafNodes

public int countLeafNodes()

Description copied from class: OptimizerPlan

Count the number of leaf nodes under (and including) this node.

Specified by:

countLeafNodes in class OptimizerPlan

leftmostLeaf

public OptimizerPlan leftmostLeaf()

Description copied from class: OptimizerPlan

Get the leftmost leaf node in this plan.

Specified by:

leftmostLeaf in class OptimizerPlan

isLeftPrefixOf

public boolean isLeftPrefixOf(OptimizerPlan other)

Description copied from class: OptimizerPlan

Return true if this plan is a (left) leading prefix of the other plan.

Specified by:

isLeftPrefixOf in class OptimizerPlan

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object