Package org.aksw.jenax.arq.util.triple

Class TripleFilter

java.lang.Object

org.aksw.jenax.arq.util.triple.TripleFilter

All Implemented Interfaces:

Predicate<org.apache.jena.graph.Triple>

public class TripleFilter
extends Object
implements Predicate<org.apache.jena.graph.Triple>

A single triple pattern combined with a filter and a direction. Corresponds to a specification of a set of triples which can be executed via Stream.stream(graph.find(triplePattern)).filter(filter::test).

Field Summary

Fields

Modifier and Type	Field	Description
protected org.apache.jena.sparql.expr.ExprList	exprs	A conjunction of expressions
protected boolean	isForward	If isForward is true then the subject acts as the source and the object as the target.
protected org.apache.jena.graph.Triple	triplePattern

Constructor Summary

Constructors

Constructor	Description
TripleFilter(org.apache.jena.graph.Triple triplePattern, org.apache.jena.sparql.expr.ExprList exprs, boolean isForward)

Method Summary

Modifier and Type	Method	Description
TripleFilter	bind(org.apache.jena.sparql.engine.binding.Binding binding)	Create a new TripleFilter with the variables in the triple pattern and the expression substituted w.r.t.
TripleFilter	bindSource(org.apache.jena.graph.Node value)
TripleFilter	bindTarget(org.apache.jena.graph.Node value)
static TripleFilter	create(org.apache.jena.graph.Node source, org.apache.jena.graph.Node predicate, boolean isForward)
Boolean	evalExpr(org.apache.jena.graph.Triple triple)
org.apache.jena.sparql.expr.ExprList	getExprs()
org.apache.jena.graph.Node	getSource()
org.apache.jena.graph.Node	getTarget()
org.apache.jena.graph.Triple	getTriplePattern()
boolean	isForward()
boolean	test(org.apache.jena.graph.Triple triple)	A convenience shorthand for toConstraint().test(triple)
TripleConstraint	toConstraint()	Convert this object to a slightly simplified representation which loses the 'direction' information.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, negate, or

Field Details

triplePattern

protected org.apache.jena.graph.Triple triplePattern

exprs

protected org.apache.jena.sparql.expr.ExprList exprs

A conjunction of expressions

isForward

protected boolean isForward

If isForward is true then the subject acts as the source and the object as the target. otherwise its vice versa.

Constructor Details

TripleFilter

public TripleFilter(org.apache.jena.graph.Triple triplePattern,
 org.apache.jena.sparql.expr.ExprList exprs,
 boolean isForward)

Method Details

create

public static TripleFilter create(org.apache.jena.graph.Node source,
 org.apache.jena.graph.Node predicate,
 boolean isForward)

getSource

public org.apache.jena.graph.Node getSource()

getTarget

public org.apache.jena.graph.Node getTarget()

getTriplePattern

public org.apache.jena.graph.Triple getTriplePattern()

getExprs

public org.apache.jena.sparql.expr.ExprList getExprs()

isForward

public boolean isForward()

evalExpr

public Boolean evalExpr(org.apache.jena.graph.Triple triple)

bind

public TripleFilter bind(org.apache.jena.sparql.engine.binding.Binding binding)

Create a new TripleFilter with the variables in the triple pattern and the expression substituted w.r.t. the given binding.

bindSource

public TripleFilter bindSource(org.apache.jena.graph.Node value)

bindTarget

public TripleFilter bindTarget(org.apache.jena.graph.Node value)

toConstraint

public TripleConstraint toConstraint()

Convert this object to a slightly simplified representation which loses the 'direction' information.

Returns:

test

public boolean test(org.apache.jena.graph.Triple triple)

A convenience shorthand for toConstraint().test(triple)

Specified by:

test in interface Predicate<org.apache.jena.graph.Triple>

toString

public String toString()

Overrides:

toString in class Object