org.topbraid.spin.arq.functions

Class EvalInGraphFunction

java.lang.Object

org.topbraid.spin.arq.AbstractFunction

org.topbraid.spin.arq.functions.EvalInGraphFunction

All Implemented Interfaces:

org.apache.jena.sparql.function.Function, org.apache.jena.sparql.function.FunctionFactory

public class EvalInGraphFunction
extends AbstractFunction

The SPARQL function spin:evalInGraph. The first argument is a SPIN expression, e.g. a function call or variable. The second argument is a graph URI: this is the graph that the query operates on, while the active graph must be the one hosting the SPIN expression tree. All other arguments must come in pairs, alternating between an argument property and its value, e.g. spin:evalInGraph(ex:myInstance, ex:MyGraph, sp:arg3, "value") The expression will be evaluated with all bindings from the property-value pairs above.

Author:

Holger Knublauch

Constructor Summary

Constructors

Constructor and Description
EvalInGraphFunction()

Method Summary

Modifier and Type	Method and Description
org.apache.jena.sparql.function.Function	create(String uri)
protected org.apache.jena.sparql.expr.NodeValue	exec(org.apache.jena.rdf.model.Model queryModel, org.apache.jena.graph.Node[] nodes, org.apache.jena.sparql.function.FunctionEnv env)
org.apache.jena.sparql.expr.NodeValue	exec(org.apache.jena.graph.Node[] nodes, org.apache.jena.sparql.function.FunctionEnv env)

Methods inherited from class org.topbraid.spin.arq.AbstractFunction

build, exec

Methods inherited from class java.lang.Object

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

Constructor Detail

EvalInGraphFunction

public EvalInGraphFunction()

Method Detail

exec

public org.apache.jena.sparql.expr.NodeValue exec(org.apache.jena.graph.Node[] nodes,
                                                  org.apache.jena.sparql.function.FunctionEnv env)

Specified by:

exec in class AbstractFunction

create

public org.apache.jena.sparql.function.Function create(String uri)

Specified by:

create in interface org.apache.jena.sparql.function.FunctionFactory

exec

protected org.apache.jena.sparql.expr.NodeValue exec(org.apache.jena.rdf.model.Model queryModel,
                                                     org.apache.jena.graph.Node[] nodes,
                                                     org.apache.jena.sparql.function.FunctionEnv env)