Module org.apache.jena.tdb

Package org.apache.jena.tdb1.store.tupletable

Class TupleIndexBase

java.lang.Object

org.apache.jena.tdb1.store.tupletable.TupleIndexBase

All Implemented Interfaces:

org.apache.jena.atlas.lib.Closeable, org.apache.jena.atlas.lib.Sync, TupleIndex

Direct Known Subclasses:

TupleIndexRecord

public abstract class TupleIndexBase
extends Object
implements TupleIndex

Method Summary

Modifier and Type	Method	Description
final boolean	add(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> tuple)	Insert a tuple - return true if it was really added, false if it was a duplicate
final boolean	delete(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> tuple)	Delete a tuple - return true if it was deleted, false if it didn't exist
final Iterator<org.apache.jena.atlas.lib.tuple.Tuple<NodeId>>	find(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> pattern)	Find all matching tuples - a slot of NodeId.NodeIdAny (or null) means match any.
final ColumnMap	getColumnMap()
final String	getMappingStr()	Get a convenient display string based on the details of the column map - do not rely on the format
final String	getName()	Get a convenient display string for the index - do not rely on the format
final int	getTupleLength()	Length of tuple supported
String	toString()
final int	weight(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> pattern)	Weight a pattern - specified in normal order (not index order).

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.atlas.lib.Closeable

close

Methods inherited from interface org.apache.jena.atlas.lib.Sync

sync

Methods inherited from interface org.apache.jena.tdb1.store.tupletable.TupleIndex

all, clear, isEmpty, size

Method Details

add

public final boolean add(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> tuple)

Insert a tuple - return true if it was really added, false if it was a duplicate

Specified by:

add in interface TupleIndex

delete

public final boolean delete(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> tuple)

Delete a tuple - return true if it was deleted, false if it didn't exist

Specified by:

delete in interface TupleIndex

find

public final Iterator<org.apache.jena.atlas.lib.tuple.Tuple<NodeId>> find(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> pattern)

Find all matching tuples - a slot of NodeId.NodeIdAny (or null) means match any. Input pattern in natural order, not index order.

Specified by:

find in interface TupleIndex

weight

public final int weight(org.apache.jena.atlas.lib.tuple.Tuple<NodeId> pattern)

Description copied from interface: TupleIndex

Weight a pattern - specified in normal order (not index order). Large numbers means better match.

Specified by:

weight in interface TupleIndex

getMappingStr

public final String getMappingStr()

Description copied from interface: TupleIndex

Get a convenient display string based on the details of the column map - do not rely on the format

Specified by:

getMappingStr in interface TupleIndex

getName

public final String getName()

Description copied from interface: TupleIndex

Get a convenient display string for the index - do not rely on the format

Specified by:

getName in interface TupleIndex

getTupleLength

public final int getTupleLength()

Description copied from interface: TupleIndex

Length of tuple supported

Specified by:

getTupleLength in interface TupleIndex

getColumnMap

public final ColumnMap getColumnMap()

Specified by:

getColumnMap in interface TupleIndex

toString

public String toString()

Overrides:

toString in class Object