org.aksw.sparqlify.core

Class RdfViewInstance

java.lang.Object

org.aksw.sparqlify.core.RdfViewInstance

public class RdfViewInstance
extends Object

Constructor Summary

Constructors

Constructor and Description
RdfViewInstance(com.hp.hpl.jena.sparql.core.Quad queryQuad, com.hp.hpl.jena.sparql.core.Quad viewQuad, int instanceId, int subId, RdfView parent, TwoWayBinding binding)

Method Summary

Methods

Modifier and Type	Method and Description
RdfViewInstance	copy()
boolean	equals(Object obj)
TwoWayBinding	getBinding()
com.hp.hpl.jena.sparql.expr.Expr	getDefiningExpr(com.hp.hpl.jena.sparql.core.Var var) For a view variable, return its defining SQL expression.
List<com.hp.hpl.jena.sparql.expr.Expr>	getInferredDefiningExprs(com.hp.hpl.jena.sparql.core.Var var) For a query variable, get all defining expressions, taking equivalences into account The question is, whether it makes sense to also treat constants as defining expressions.
RdfView	getInstance()
int	getInstanceId()
RdfView	getParent()
com.google.common.collect.SetMultimap<com.hp.hpl.jena.sparql.core.Var,com.hp.hpl.jena.sparql.core.Var>	getParentToQueryBinding() How the query variables map to the parent view Given a query with var a, and a virtual graph with ?s: e.g.
com.hp.hpl.jena.sparql.core.Quad	getQueryQuad()
com.hp.hpl.jena.sparql.core.QuadPattern	getQueryQuads()
com.google.common.collect.SetMultimap<com.hp.hpl.jena.sparql.core.Var,com.hp.hpl.jena.sparql.core.Var>	getQueryToParentBinding() Returns a map from query level to the parent, so the instance level is omitted.
com.google.common.collect.BiMap<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.graph.Node>	getRenamer()
com.google.common.collect.Multimap<com.hp.hpl.jena.sparql.core.Var,VarDef>	getSqlBinding()
com.hp.hpl.jena.sparql.core.Quad	getViewQuad()
com.hp.hpl.jena.sparql.core.QuadPattern	getViewQuads()
int	hashCode()
boolean	isViewVariable(com.hp.hpl.jena.sparql.core.Var var)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

RdfViewInstance

public RdfViewInstance(com.hp.hpl.jena.sparql.core.Quad queryQuad,
               com.hp.hpl.jena.sparql.core.Quad viewQuad,
               int instanceId,
               int subId,
               RdfView parent,
               TwoWayBinding binding)

Method Detail

copy

public RdfViewInstance copy()

getDefiningExpr

public com.hp.hpl.jena.sparql.expr.Expr getDefiningExpr(com.hp.hpl.jena.sparql.core.Var var)

For a view variable, return its defining SQL expression.

Parameters:

var -

Returns:

getInferredDefiningExprs

public List<com.hp.hpl.jena.sparql.expr.Expr> getInferredDefiningExprs(com.hp.hpl.jena.sparql.core.Var var)

For a query variable, get all defining expressions, taking equivalences into account The question is, whether it makes sense to also treat constants as defining expressions. I guess yes, since a view quad such as ?s rdf:type ?o could be rewritten as ?s ?p ?o . with ?p = rdf:type

Parameters:

var -

Returns:

isViewVariable

public boolean isViewVariable(com.hp.hpl.jena.sparql.core.Var var)

getQueryToParentBinding

public com.google.common.collect.SetMultimap<com.hp.hpl.jena.sparql.core.Var,com.hp.hpl.jena.sparql.core.Var> getQueryToParentBinding()

Returns a map from query level to the parent, so the instance level is omitted.

Returns:

getParentToQueryBinding

public com.google.common.collect.SetMultimap<com.hp.hpl.jena.sparql.core.Var,com.hp.hpl.jena.sparql.core.Var> getParentToQueryBinding()

How the query variables map to the parent view Given a query with var a, and a virtual graph with ?s: e.g. {?view1_s=[?a]}

Returns:

getQueryQuads

public com.hp.hpl.jena.sparql.core.QuadPattern getQueryQuads()

getViewQuads

public com.hp.hpl.jena.sparql.core.QuadPattern getViewQuads()

getQueryQuad

public com.hp.hpl.jena.sparql.core.Quad getQueryQuad()

getViewQuad

public com.hp.hpl.jena.sparql.core.Quad getViewQuad()

getInstanceId

public int getInstanceId()

getInstance

public RdfView getInstance()

getParent

public RdfView getParent()

getRenamer

public com.google.common.collect.BiMap<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.graph.Node> getRenamer()

getBinding

public TwoWayBinding getBinding()

getSqlBinding

public com.google.common.collect.Multimap<com.hp.hpl.jena.sparql.core.Var,VarDef> getSqlBinding()

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object