Package org.aksw.jena_sparql_api.dboe

Class QuadTableFromNestedMaps

java.lang.Object

org.aksw.jena_sparql_api.dboe.QuadTableFromNestedMaps

All Implemented Interfaces:

org.apache.jena.sparql.core.mem.QuadTable, org.apache.jena.sparql.core.mem.TransactionalComponent, org.apache.jena.sparql.core.mem.TupleTable<org.apache.jena.sparql.core.Quad>, org.apache.jena.sparql.core.Transactional

public class QuadTableFromNestedMaps
extends Object
implements org.apache.jena.sparql.core.mem.QuadTable, org.apache.jena.sparql.core.Transactional

A simple QuadTable implementation for use cases where insert order sensitivity is more important than performance. This implementation uses nested LinkedHashMaps and therefore does not preserve insert order but it is sensitive to it

Author:

Claus Stadler, Oct 30, 2018

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	QuadTableFromNestedMaps.TxnState

Nested classes/interfaces inherited from interface org.apache.jena.sparql.core.Transactional

org.apache.jena.sparql.core.Transactional.Promote

Field Summary

Fields

Modifier and Type	Field	Description
protected ThreadLocal<QuadTableFromNestedMaps.TxnState>	local
protected AtomicReference<QuadTableCore>	master

Constructor Summary

Constructors

Constructor	Description
QuadTableFromNestedMaps()

Method Summary

Modifier and Type	Method	Description
void	abort()
void	add(org.apache.jena.sparql.core.Quad quad)
void	begin(org.apache.jena.query.ReadWrite readWrite)
void	begin(org.apache.jena.query.TxnType type)
void	clear()
void	commit()
void	delete(org.apache.jena.sparql.core.Quad quad)
void	end()
Stream<org.apache.jena.sparql.core.Quad>	find(org.apache.jena.graph.Node g, org.apache.jena.graph.Node s, org.apache.jena.graph.Node p, org.apache.jena.graph.Node o)
boolean	isInTransaction()
Stream<org.apache.jena.graph.Node>	listGraphNodes()
protected ThreadLocal<QuadTableFromNestedMaps.TxnState>	local()
protected AtomicReference<QuadTableCore>	master()
protected QuadTableCore	newQuadStore()
boolean	promote(org.apache.jena.sparql.core.Transactional.Promote mode)
org.apache.jena.query.ReadWrite	transactionMode()
org.apache.jena.query.TxnType	transactionType()

Methods inherited from class java.lang.Object

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

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

findInUnionGraph

Methods inherited from interface org.apache.jena.sparql.core.Transactional

begin, calc, calculate, calculateRead, calculateWrite, exec, execute, executeRead, executeWrite, promote

Field Details

master

protected AtomicReference<QuadTableCore> master

local

protected ThreadLocal<QuadTableFromNestedMaps.TxnState> local

Constructor Details

QuadTableFromNestedMaps

public QuadTableFromNestedMaps()

Method Details

master

protected AtomicReference<QuadTableCore> master()

local

protected ThreadLocal<QuadTableFromNestedMaps.TxnState> local()

newQuadStore

protected QuadTableCore newQuadStore()

clear

public void clear()

Specified by:

clear in interface org.apache.jena.sparql.core.mem.QuadTable

Specified by:

clear in interface org.apache.jena.sparql.core.mem.TupleTable<org.apache.jena.sparql.core.Quad>

add

public void add(org.apache.jena.sparql.core.Quad quad)

Specified by:

add in interface org.apache.jena.sparql.core.mem.TupleTable<org.apache.jena.sparql.core.Quad>

delete

public void delete(org.apache.jena.sparql.core.Quad quad)

Specified by:

delete in interface org.apache.jena.sparql.core.mem.TupleTable<org.apache.jena.sparql.core.Quad>

begin

public void begin(org.apache.jena.query.ReadWrite readWrite)

Specified by:

begin in interface org.apache.jena.sparql.core.Transactional

Specified by:

begin in interface org.apache.jena.sparql.core.mem.TransactionalComponent

commit

public void commit()

Specified by:

commit in interface org.apache.jena.sparql.core.Transactional

Specified by:

commit in interface org.apache.jena.sparql.core.mem.TransactionalComponent

end

public void end()

Specified by:

end in interface org.apache.jena.sparql.core.Transactional

Specified by:

end in interface org.apache.jena.sparql.core.mem.TransactionalComponent

find

public Stream<org.apache.jena.sparql.core.Quad> find(org.apache.jena.graph.Node g,
 org.apache.jena.graph.Node s,
 org.apache.jena.graph.Node p,
 org.apache.jena.graph.Node o)

Specified by:

find in interface org.apache.jena.sparql.core.mem.QuadTable

listGraphNodes

public Stream<org.apache.jena.graph.Node> listGraphNodes()

Specified by:

listGraphNodes in interface org.apache.jena.sparql.core.mem.QuadTable

begin

public void begin(org.apache.jena.query.TxnType type)

Specified by:

begin in interface org.apache.jena.sparql.core.Transactional

promote

public boolean promote(org.apache.jena.sparql.core.Transactional.Promote mode)

Specified by:

promote in interface org.apache.jena.sparql.core.Transactional

transactionMode

public org.apache.jena.query.ReadWrite transactionMode()

Specified by:

transactionMode in interface org.apache.jena.sparql.core.Transactional

transactionType

public org.apache.jena.query.TxnType transactionType()

Specified by:

transactionType in interface org.apache.jena.sparql.core.Transactional

isInTransaction

public boolean isInTransaction()

Specified by:

isInTransaction in interface org.apache.jena.sparql.core.Transactional

abort

public void abort()

Specified by:

abort in interface org.apache.jena.sparql.core.Transactional

Specified by:

abort in interface org.apache.jena.sparql.core.mem.TransactionalComponent

Specified by:

abort in interface org.apache.jena.sparql.core.mem.TupleTable<org.apache.jena.sparql.core.Quad>