org.modeshape.jcr.query.engine.process

Class DelegatingSequence

java.lang.Object

org.modeshape.jcr.query.NodeSequence

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

Direct Known Subclasses:

BufferingSequence, DistinctSequence

public abstract class DelegatingSequence
extends NodeSequence

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

Modifier and Type	Field and Description
protected NodeSequence	delegate

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

LOGGER, NO_PASS_ROW_FILTER, PASS_ROW_FILTER

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DelegatingSequence(NodeSequence delegate)

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.
boolean	isEmpty() Determine whether this results is known to be empty.
NodeSequence.Batch	nextBatch() Get the next batch of NodeKey instances.
int	width() Get the number of nodes in each row.

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, toString, wait, wait, wait

Field Detail

delegate

protected final NodeSequence delegate

Constructor Detail

DelegatingSequence

protected DelegatingSequence(NodeSequence delegate)

Method Detail

width

public int width()

Description copied from class: NodeSequence

Get the number of nodes in each row.

Specified by:

width in class NodeSequence

Returns:

the width of each row; always positive

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.

Specified by:

getRowCount in class NodeSequence

Returns:

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

isEmpty

public boolean isEmpty()

Description copied from class: NodeSequence

Determine whether this results is known to be empty.

Specified by:

isEmpty in class NodeSequence

Returns:

the true if there are no results, or false if there is at least some or if the number of rows is not known

nextBatch

public NodeSequence.Batch nextBatch()

Description copied from class: NodeSequence

Get the next batch of NodeKey instances.

Specified by:

nextBatch in class NodeSequence

Returns:

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

close

public void close()

Description copied from class: NodeSequence

Signal that this node sequence is no longer needed.

Specified by:

close in class NodeSequence