Package org.aksw.jena_sparql_api.data_query.impl

Class NodeTransformResolvePaths

java.lang.Object

org.aksw.jena_sparql_api.data_query.impl.NodeTransformResolvePaths

Type Parameters:

T -

All Implemented Interfaces:

Function<org.apache.jena.graph.Node,org.apache.jena.graph.Node>, org.apache.jena.sparql.graph.NodeTransform

public class NodeTransformResolvePaths
extends Object
implements org.apache.jena.sparql.graph.NodeTransform

NodeTransformer that detects nodes that are path references, and resolves them to appropriate variables, thereby keeping track of graph patterns that need to be injected into the base query. Paths can be references as mandatory or as optional.

   

     
OPTIONAL { X } X -> X
     
OPTIONAL { HEAD } BODY OPTIONAL { TAIL } -> should not happen, because if the body is mandatory, so should be head
   
 

Author:

raven

Field Summary

Fields

Modifier and Type	Field	Description
protected ResolverNode	resolver
protected org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var>	vargen
protected com.google.common.collect.BiMap<org.apache.jena.sparql.core.Var,ResolverNode>	varToResolver

Constructor Summary

Constructors

Constructor	Description
NodeTransformResolvePaths(ResolverNode resolver, org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> vargen, com.google.common.collect.BiMap<org.apache.jena.sparql.core.Var,ResolverNode> varToResolver)

Method Summary

Modifier and Type	Method	Description
org.apache.jena.graph.Node	$apply(NodeAliasedPath np)
org.apache.jena.graph.Node	apply(org.apache.jena.graph.Node n)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Function

andThen, compose

Field Details

resolver

protected ResolverNode resolver

vargen

protected org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> vargen

varToResolver

protected com.google.common.collect.BiMap<org.apache.jena.sparql.core.Var,ResolverNode> varToResolver

Constructor Details

NodeTransformResolvePaths

public NodeTransformResolvePaths(ResolverNode resolver,
 org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> vargen,
 com.google.common.collect.BiMap<org.apache.jena.sparql.core.Var,ResolverNode> varToResolver)

Method Details

apply

public org.apache.jena.graph.Node apply(org.apache.jena.graph.Node n)

Specified by:

apply in interface Function<org.apache.jena.graph.Node,org.apache.jena.graph.Node>

$apply

public org.apache.jena.graph.Node $apply(NodeAliasedPath np)