org.modeshape.jcr.query.engine.process

Class SortingSequence

java.lang.Object

org.modeshape.jcr.query.NodeSequence

org.modeshape.jcr.query.engine.process.DelegatingSequence

org.modeshape.jcr.query.engine.process.BufferingSequence

org.modeshape.jcr.query.engine.process.SortingSequence

public class SortingSequence
extends BufferingSequence

Nested Class Summary

Nested classes/interfaces inherited from class org.modeshape.jcr.query.NodeSequence

NodeSequence.AlternateSizeBatch, NodeSequence.Batch, NodeSequence.LimitBatch, NodeSequence.MultiWidthBatch, NodeSequence.Restartable, NodeSequence.RowAccessor, NodeSequence.RowFilter, NodeSequence.SingleWidthBatch

Field Summary

Fields inherited from class org.modeshape.jcr.query.engine.process.BufferingSequence

buffer, cache, extractor, logger, remainingRowCount, rowFactory, trace, width, workspaceName

Fields inherited from class org.modeshape.jcr.query.engine.process.DelegatingSequence

delegate

Fields inherited from class org.modeshape.jcr.query.NodeSequence

LOGGER, NO_PASS_ROW_FILTER, PASS_ROW_FILTER

Constructor Summary

Constructors

Constructor and Description
SortingSequence(String workspaceName, NodeSequence delegate, RowExtractors.ExtractFromRow extractor, BufferManager bufferMgr, CachedNodeSupplier nodeCache, boolean pack, boolean useHeap, boolean allowDuplicates, NullOrder nullOrder)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Signal that this node sequence is no longer needed.
long	getRowCount() Get the number of rows in this sequence.
protected Iterator<BufferedRows.BufferedRow>	initialize() Initialize this node sequence only the first time that nextBatch() is called.
NodeSequence.Batch	nextBatch() Get the next batch of NodeKey instances.
String	toString()

Methods inherited from class org.modeshape.jcr.query.engine.process.BufferingSequence

batchFrom, createRow, isEmpty, loadAll, rowCount

Methods inherited from class org.modeshape.jcr.query.engine.process.DelegatingSequence

width

Methods inherited from class org.modeshape.jcr.query.NodeSequence

append, batchFilteredWith, batchOf, batchOf, batchOf, batchOfKeys, batchOfKeys, batchOfKeys, batchOfKeys, batchWithCount, copy, emptyBatch, emptySequence, filter, keyFor, limit, limit, merging, requireBoth, requireEither, skip, withBatch, withBatches, withBatches, withNode, withNodeKeys, withNodeKeys, withNodeKeys, withNodeKeys, withNodes, withNodes

Methods inherited from class java.lang.Object

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

Constructor Detail

SortingSequence

public SortingSequence(String workspaceName,
               NodeSequence delegate,
               RowExtractors.ExtractFromRow extractor,
               BufferManager bufferMgr,
               CachedNodeSupplier nodeCache,
               boolean pack,
               boolean useHeap,
               boolean allowDuplicates,
               NullOrder nullOrder)

Method Detail

getRowCount

public long getRowCount()

Description copied from class: NodeSequence

Get the number of rows in this sequence. If the actual number of rows is not known, this method returns -1.

Overrides:

getRowCount in class DelegatingSequence

Returns:

the number of rows, or -1 if the number of rows is not known or cannot be found with significant overhead

nextBatch

public NodeSequence.Batch nextBatch()

Description copied from class: NodeSequence

Get the next batch of NodeKey instances.

Overrides:

nextBatch in class DelegatingSequence

Returns:

the next batch, or null if there are no more batches.

initialize

protected Iterator<BufferedRows.BufferedRow> initialize()

Initialize this node sequence only the first time that nextBatch() is called.

Returns:

the iterator over the buffered rows in this sequence; may be null if this sequence is empty

close

public void close()

Description copied from class: NodeSequence

Signal that this node sequence is no longer needed.

Overrides:

close in class BufferingSequence

toString

public String toString()

Overrides:

toString in class Object