org.teiid.query.processor.relational

Class NestedLoopJoinStrategy

java.lang.Object

org.teiid.query.processor.relational.JoinStrategy

org.teiid.query.processor.relational.MergeJoinStrategy

org.teiid.query.processor.relational.NestedLoopJoinStrategy

public class NestedLoopJoinStrategy
extends MergeJoinStrategy

Nested loop is currently implemented as a degenerate case of merge join. Only for use with Full, Left, Inner, and Cross joins

Nested Class Summary

Nested classes/interfaces inherited from class org.teiid.query.processor.relational.MergeJoinStrategy

MergeJoinStrategy.SortOption

Field Summary

Fields inherited from class org.teiid.query.processor.relational.MergeJoinStrategy

processingSortLeft, processingSortRight, singleMatch, sortLeft, sortRight

Fields inherited from class org.teiid.query.processor.relational.JoinStrategy

joinNode, leftSource, reserved, rightSource

Constructor Summary

Constructors

Constructor and Description
NestedLoopJoinStrategy()

Method Summary

Modifier and Type	Method and Description
NestedLoopJoinStrategy	clone()
protected int	compare(List leftProbe, List rightProbe, int[] leftExpressionIndecies, int[] rightExpressionIndecies)
protected void	loadRight()
String	toString()

Methods inherited from class org.teiid.query.processor.relational.MergeJoinStrategy

close, compareToPrevious, compareTuples, getName, initialize, loadLeft, process, resetMatchState, setProcessingSortLeft, setProcessingSortRight, singleMatch

Methods inherited from class org.teiid.query.processor.relational.JoinStrategy

openLeft, openRight, outputTuple

Methods inherited from class java.lang.Object

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

Constructor Detail

NestedLoopJoinStrategy

public NestedLoopJoinStrategy()

Method Detail

clone

public NestedLoopJoinStrategy clone()

Overrides:

clone in class MergeJoinStrategy

See Also:

MergeJoinStrategy.clone()

compare

protected int compare(List leftProbe,
                      List rightProbe,
                      int[] leftExpressionIndecies,
                      int[] rightExpressionIndecies)

Overrides:

compare in class MergeJoinStrategy

See Also:

MergeJoinStrategy.compare(java.util.List, java.util.List, int[], int[])

loadRight

protected void loadRight()
                  throws TeiidComponentException,
                         TeiidProcessingException

Overrides:

loadRight in class MergeJoinStrategy

Throws:

TeiidComponentException

TeiidProcessingException

toString

public String toString()

Overrides:

toString in class MergeJoinStrategy

See Also:

MergeJoinStrategy.toString()