org.teiid.query.processor.relational
Class JoinStrategy

java.lang.Object
  org.teiid.query.processor.relational.JoinStrategy

Direct Known Subclasses:

MergeJoinStrategy, NestedTableJoinStrategy

public abstract class JoinStrategy
extends java.lang.Object

Field Summary

protected JoinNode	joinNode
protected org.teiid.query.processor.relational.SourceState	leftSource
protected org.teiid.query.processor.relational.SourceState	rightSource

Constructor Summary

JoinStrategy()

Method Summary

abstract JoinStrategy	clone()
void	close()
void	initialize(JoinNode joinNode)
protected void	loadLeft()
protected void	loadRight()
protected void	openLeft()
protected void	openRight()
protected java.util.List	outputTuple(java.util.List leftTuple, java.util.List rightTuple) Output a combined, projected tuple based on tuple parts from the left and right.
protected abstract void	process()

Methods inherited from class java.lang.Object

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

Field Detail

joinNode

protected JoinNode joinNode

leftSource

protected org.teiid.query.processor.relational.SourceState leftSource

rightSource

protected org.teiid.query.processor.relational.SourceState rightSource

Constructor Detail

JoinStrategy

public JoinStrategy()

Method Detail

close

public void close()

initialize

public void initialize(JoinNode joinNode)

loadLeft

protected void loadLeft()
                 throws TeiidComponentException,
                        TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

loadRight

protected void loadRight()
                  throws TeiidComponentException,
                         TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

outputTuple

protected java.util.List outputTuple(java.util.List leftTuple,
                                     java.util.List rightTuple)

Output a combined, projected tuple based on tuple parts from the left and right.

Parameters:

leftTuple - Left tuple part

rightTuple - Right tuple part

Throws:

TeiidComponentException

process

protected abstract void process()
                         throws TeiidComponentException,
                                TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

clone

public abstract JoinStrategy clone()

Overrides:

clone in class java.lang.Object

openLeft

protected void openLeft()
                 throws TeiidComponentException,
                        TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

openRight

protected void openRight()
                  throws TeiidComponentException,
                         TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException