Module org.apache.jena.arq

Package org.apache.jena.sparql.core

Class Substitute

java.lang.Object

org.apache.jena.sparql.core.Substitute

public class Substitute
extends Object

Substitution in SPARQL algebra.

See also QueryTransformOps and UpdateTransformOps which operate on SPARQL syntax.

inject(org.apache.jena.sparql.algebra.Op, org.apache.jena.sparql.engine.binding.Binding) provides the substitution, while leaving a variable present, used by LATERAL.

Constructor Summary

Constructors

Constructor	Description
Substitute()

Method Summary

Modifier and Type	Method	Description
static Op	inject(Op opInput, Binding binding)	Inject takes an Op to transform using a {Binding binding}.
static org.apache.jena.graph.Node	substitute(org.apache.jena.graph.Node n, Binding binding)
static org.apache.jena.graph.Triple	substitute(org.apache.jena.graph.Triple triple, Binding binding)
static Op	substitute(Op op, Var var, org.apache.jena.graph.Node node)
static Op	substitute(Op op, Binding binding)
static BasicPattern	substitute(BasicPattern bgp, Binding binding)
static Quad	substitute(Quad quad, Binding binding)
static TriplePath	substitute(TriplePath triplePath, Binding binding)
static ExprList	substitute(ExprList exprList, Binding binding)
static Expr	substitute(Expr expr, Binding binding)
static PropFuncArg	substitute(PropFuncArg propFuncArg, Binding binding)

Methods inherited from class java.lang.Object

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

Constructor Details

Substitute

public Substitute()

Method Details

inject

public static Op inject(Op opInput,
 Binding binding)

Inject takes an Op to transform using a {Binding binding}. The transformation assumes the Op structure is legal for the operation. The transformation is to wrap each place a variable is used (BGP, GRAPH, Path and some equivalent operations) with a BIND to restrict the vartibale to a specific value while still retaining the variable (e.g for FILETERs).

   (bgp
     (?s :p 123)
     (?s :q ?a)
   )
 

with binding ?s = :x becomes

 (assign (?s :x)
    (bgp
      (:x :p 123)
      (:x :q ?a)
    ))
 

substitute

public static Op substitute(Op op,
 Binding binding)

substitute

public static Op substitute(Op op,
 Var var,
 org.apache.jena.graph.Node node)

substitute

public static BasicPattern substitute(BasicPattern bgp,
 Binding binding)

substitute

public static org.apache.jena.graph.Triple substitute(org.apache.jena.graph.Triple triple,
 Binding binding)

substitute

public static TriplePath substitute(TriplePath triplePath,
 Binding binding)

substitute

public static Quad substitute(Quad quad,
 Binding binding)

substitute

public static org.apache.jena.graph.Node substitute(org.apache.jena.graph.Node n,
 Binding binding)

substitute

public static PropFuncArg substitute(PropFuncArg propFuncArg,
 Binding binding)

substitute

public static Expr substitute(Expr expr,
 Binding binding)

substitute

public static ExprList substitute(ExprList exprList,
 Binding binding)