Module org.apache.jena.arq

Package org.apache.jena.sparql.algebra

Class Algebra

java.lang.Object

org.apache.jena.sparql.algebra.Algebra

public class Algebra
extends Object

Utilities to produce SPARQL algebra

Constructor Summary

Constructors

Constructor	Description
Algebra()

Method Summary

Modifier and Type	Method	Description
static boolean	compatible(Binding bindingLeft, Binding bindingRight)
static boolean	compatible(Binding bindingLeft, Binding bindingRight, Iterator<Var> vars)	Test to see if bindings are compatible for all variables of the provided iterator.
static Op	compile(Query query)	Compile a query - pattern and modifiers.
static Op	compile(Element elt)	Compile a pattern.
static boolean	disjoint(Binding binding1, Binding binding2)
static QueryIterator	exec(Op op, org.apache.jena.graph.Graph graph)
static QueryIterator	exec(Op op, Dataset ds)
static QueryIterator	exec(Op op, org.apache.jena.rdf.model.Model model)
static QueryIterator	exec(Op op, DatasetGraph ds)
static QueryIterator	execRef(Op op, org.apache.jena.graph.Graph graph)
static QueryIterator	execRef(Op op, Dataset ds)
static QueryIterator	execRef(Op op, org.apache.jena.rdf.model.Model model)
static QueryIterator	execRef(Op op, DatasetGraph dsg)
static Binding	merge(Binding bindingLeft, Binding bindingRight)	This is the SPARQL merge rule.
static Op	optimize(Op op)	Apply static transformations to a query to optimize it
static Op	optimize(Op op, Context context)	Apply static transformations to a query to optimize it
static Op	parse(String string)
static Op	parse(String string, org.apache.jena.shared.PrefixMapping pmap)
static Op	parse(Item item)
static Op	read(String filename)
static Op	toQuadBlockForm(Op op)	Turn an algebra expression into quadblock form
static Op	toQuadForm(Op op)	Turn an algebra expression into quadpattern form

Methods inherited from class java.lang.Object

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

Constructor Details

Algebra

public Algebra()

Method Details

optimize

public static Op optimize(Op op)

Apply static transformations to a query to optimize it

optimize

public static Op optimize(Op op,
 Context context)

Apply static transformations to a query to optimize it

compile

public static Op compile(Query query)

Compile a query - pattern and modifiers.

compile

public static Op compile(Element elt)

Compile a pattern.

toQuadForm

public static Op toQuadForm(Op op)

Turn an algebra expression into quadpattern form

toQuadBlockForm

public static Op toQuadBlockForm(Op op)

Turn an algebra expression into quadblock form

read

public static Op read(String filename)

parse

public static Op parse(String string)

parse

public static Op parse(String string,
 org.apache.jena.shared.PrefixMapping pmap)

parse

public static Op parse(Item item)

exec

public static QueryIterator exec(Op op,
 Dataset ds)

exec

public static QueryIterator exec(Op op,
 org.apache.jena.rdf.model.Model model)

exec

public static QueryIterator exec(Op op,
 org.apache.jena.graph.Graph graph)

exec

public static QueryIterator exec(Op op,
 DatasetGraph ds)

execRef

public static QueryIterator execRef(Op op,
 Dataset ds)

execRef

public static QueryIterator execRef(Op op,
 org.apache.jena.rdf.model.Model model)

execRef

public static QueryIterator execRef(Op op,
 org.apache.jena.graph.Graph graph)

execRef

public static QueryIterator execRef(Op op,
 DatasetGraph dsg)

merge

public static Binding merge(Binding bindingLeft,
 Binding bindingRight)

This is the SPARQL merge rule.

compatible

public static boolean compatible(Binding bindingLeft,
 Binding bindingRight)

compatible

public static boolean compatible(Binding bindingLeft,
 Binding bindingRight,
 Iterator<Var> vars)

Test to see if bindings are compatible for all variables of the provided iterator.

disjoint

public static boolean disjoint(Binding binding1,
 Binding binding2)