org.teiid.query.processor.relational
Class SortUtility

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

public class SortUtility
extends java.lang.Object

Implements several modes of a multi-pass sort.

Nested Class Summary

static class

SortUtility.Mode

Constructor Summary

SortUtility(TupleSource sourceID, java.util.List<OrderByItem> items, SortUtility.Mode mode, BufferManager bufferMgr, java.lang.String groupName, java.util.List schema)

SortUtility(TupleSource ts, java.util.List expressions, java.util.List<java.lang.Boolean> types, SortUtility.Mode mode, BufferManager bufferManager, java.lang.String connectionID, java.util.List schema)

Method Summary

protected void	initialSort() creates sorted sublists stored in tuplebuffers
boolean	isDistinct()
boolean	isDone()
protected void	mergePhase()
java.util.List<TupleBuffer>	onePassSort()
TupleBuffer	sort()

Methods inherited from class java.lang.Object

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

Constructor Detail

SortUtility

public SortUtility(TupleSource sourceID,
                   java.util.List<OrderByItem> items,
                   SortUtility.Mode mode,
                   BufferManager bufferMgr,
                   java.lang.String groupName,
                   java.util.List schema)

SortUtility

public SortUtility(TupleSource ts,
                   java.util.List expressions,
                   java.util.List<java.lang.Boolean> types,
                   SortUtility.Mode mode,
                   BufferManager bufferManager,
                   java.lang.String connectionID,
                   java.util.List schema)

Method Detail

isDone

public boolean isDone()

sort

public TupleBuffer sort()
                 throws TeiidComponentException,
                        TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

onePassSort

public java.util.List<TupleBuffer> onePassSort()
                                        throws TeiidComponentException,
                                               TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

initialSort

protected void initialSort()
                    throws TeiidComponentException,
                           TeiidProcessingException

creates sorted sublists stored in tuplebuffers

Throws:

TeiidComponentException

TeiidProcessingException

mergePhase

protected void mergePhase()
                   throws TeiidComponentException,
                          TeiidProcessingException

Throws:

TeiidComponentException

TeiidProcessingException

isDistinct

public boolean isDistinct()