org.apache.jena.sparql.core.mem

Class PMapQuadTable

java.lang.Object

org.apache.jena.sparql.core.mem.OrderedTupleTable<TupleType,ConsumerType>

org.apache.jena.sparql.core.mem.PMapTupleTable<FourTupleMap,Quad,org.apache.jena.atlas.lib.tuple.TConsumer4<Node>>

org.apache.jena.sparql.core.mem.PMapQuadTable

All Implemented Interfaces:

QuadTable, TransactionalComponent, TupleTable<Quad>

public class PMapQuadTable
extends PMapTupleTable<FourTupleMap,Quad,org.apache.jena.atlas.lib.tuple.TConsumer4<Node>>
implements QuadTable

An implementation of QuadTable based on the use of nested PMaps. Intended for high-speed in-memory use.

Constructor Summary

Constructors

Constructor and Description
PMapQuadTable(String order)
PMapQuadTable(String canonical, String order)
PMapQuadTable(String tableName, org.apache.jena.atlas.lib.tuple.TupleMap order)

Method Summary

Modifier and Type	Method and Description
void	add(Quad q) Add a tuple to the table
void	delete(Quad q) Remove a tuple from the table
java.util.stream.Stream<Quad>	find(Node g, Node s, Node p, Node o) Search the table using a pattern of slots.

Methods inherited from class org.apache.jena.sparql.core.mem.PMapTupleTable

begin, clear, commit, end

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.sparql.core.mem.QuadTable

clear, findInUnionGraph, listGraphNodes

Methods inherited from interface org.apache.jena.sparql.core.mem.TupleTable

abort

Methods inherited from interface org.apache.jena.sparql.core.mem.TransactionalComponent

begin, commit, end

Constructor Detail

PMapQuadTable

public PMapQuadTable(String order)

Parameters:

order - an internal order for this table

PMapQuadTable

public PMapQuadTable(String canonical,
                     String order)

Parameters:

canonical - the canonical order outside this table

order - the internal order for this table

PMapQuadTable

public PMapQuadTable(String tableName,
                     org.apache.jena.atlas.lib.tuple.TupleMap order)

Parameters:

tableName - a name for this table

order - the order of elements in this table

Method Detail

add

public void add(Quad q)

Description copied from interface: TupleTable

Add a tuple to the table

Specified by:

add in interface TupleTable<Quad>

Parameters:

q - the tuple to add

delete

public void delete(Quad q)

Description copied from interface: TupleTable

Remove a tuple from the table

Specified by:

delete in interface TupleTable<Quad>

Parameters:

q - the tuple to remove

find

public java.util.stream.Stream<Quad> find(Node g,
                                          Node s,
                                          Node p,
                                          Node o)

Description copied from interface: QuadTable

Search the table using a pattern of slots. Node.ANY or null will work as a wildcard.

Specified by:

find in interface QuadTable

Parameters:

g - the graph node of the pattern

s - the subject node of the pattern

p - the predicate node of the pattern

o - the object node of the pattern

Returns:

an Stream of matched quads