org.aksw.sparqlify.core

Class RdfView

java.lang.Object

org.aksw.sparqlify.core.RdfView

All Implemented Interfaces:

View

public class RdfView
extends Object
implements View

An RdfView definition. Essentially it corresponds to the following pseudo-sparql query: Contruct { ?s a Person . // quadPattern ?s ?p ?o . Filter(?p In (...set of uris)) . // filter which both describes and contrains the underlying sql data // Ideally this filter is both pushed down to an sql where clause and // helps rejecting view candidates for queries with non-compatible filters } Binding { ?s := Uri(Concat('prefix', id) ?p := Uri(pred) ?o := Literal(value, dataType) } Sql { Select id, pred, value, 'xsd:int' as dataType From ... }

Author:

raven

Constructor Summary

Constructors

Constructor and Description
RdfView(String name, com.hp.hpl.jena.sparql.core.QuadPattern quadPattern, com.hp.hpl.jena.sparql.expr.ExprList filter, Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.sparql.expr.Expr> binding, ConstraintContainer constraints, SqlNodeOld sqlExpr)
RdfView(String name, RdfViewTemplate template, com.hp.hpl.jena.sparql.expr.ExprList filter, ConstraintContainer constraints, SqlNodeOld sqlExpr)

Method Summary

Methods

Modifier and Type	Method and Description
RdfView	copySubstitute(Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.graph.Node> map)
static RdfView	create(String str) Constructs a view definition syntax: [From graph] { ?s ?p ?o .
static RdfView	create(String name, com.hp.hpl.jena.sparql.core.QuadPattern quadPattern, com.hp.hpl.jena.sparql.expr.ExprList filters, List<com.hp.hpl.jena.sparql.expr.Expr> bindings, List<Constraint> rawConstraints, Relation relation) Meh....
static RdfView	create(String name, String str, Map<String,String> defaultPrefixes)
static RdfView	create(ViewDefinition definition)
boolean	equals(Object obj)
Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.sparql.expr.Expr>	getBinding() Deprecated.
Map<String,SqlDatatype>	getColumnToDatatype()
ConstraintContainer	getConstraints()
com.hp.hpl.jena.sparql.expr.ExprList	getFilter()
String	getName()
com.hp.hpl.jena.sparql.core.QuadPattern	getQuadPattern() Deprecated.
RestrictionManagerImpl	getRestrictions()
SqlNodeOld	getSqlNode()
Set<com.hp.hpl.jena.sparql.core.Var>	getVarsMentioned()
Map<com.hp.hpl.jena.sparql.core.Var,RdfTermPattern>	getVarToPattern()
int	hashCode()
void	setRestrictions(RestrictionManagerImpl restrictions)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

RdfView

public RdfView(String name,
       RdfViewTemplate template,
       com.hp.hpl.jena.sparql.expr.ExprList filter,
       ConstraintContainer constraints,
       SqlNodeOld sqlExpr)

RdfView

public RdfView(String name,
       com.hp.hpl.jena.sparql.core.QuadPattern quadPattern,
       com.hp.hpl.jena.sparql.expr.ExprList filter,
       Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.sparql.expr.Expr> binding,
       ConstraintContainer constraints,
       SqlNodeOld sqlExpr)

Method Detail

getRestrictions

public RestrictionManagerImpl getRestrictions()

setRestrictions

public void setRestrictions(RestrictionManagerImpl restrictions)

getVarToPattern

public Map<com.hp.hpl.jena.sparql.core.Var,RdfTermPattern> getVarToPattern()

getVarsMentioned

public Set<com.hp.hpl.jena.sparql.core.Var> getVarsMentioned()

Specified by:

getVarsMentioned in interface View

getColumnToDatatype

public Map<String,SqlDatatype> getColumnToDatatype()

copySubstitute

public RdfView copySubstitute(Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.graph.Node> map)

Specified by:

copySubstitute in interface View

getName

public String getName()

Specified by:

getName in interface View

create

public static RdfView create(String str)

Constructs a view definition syntax: [From graph] { ?s ?p ?o . Filter(?o = ...) . } with ?s = expr; ?p = ; select ...; Currently this is just some string hack

Parameters:

pattern -

create

public static RdfView create(ViewDefinition definition)

create

public static RdfView create(String name,
             com.hp.hpl.jena.sparql.core.QuadPattern quadPattern,
             com.hp.hpl.jena.sparql.expr.ExprList filters,
             List<com.hp.hpl.jena.sparql.expr.Expr> bindings,
             List<Constraint> rawConstraints,
             Relation relation)

Meh.... Didn't notice that template does not have support for graphs. Therefore need to change that...

Parameters:

template -

filters -

bindings -

relation -

Returns:

create

public static RdfView create(String name,
             String str,
             Map<String,String> defaultPrefixes)

getQuadPattern

@Deprecated
public com.hp.hpl.jena.sparql.core.QuadPattern getQuadPattern()

Deprecated.

getFilter

public com.hp.hpl.jena.sparql.expr.ExprList getFilter()

getBinding

@Deprecated
public Map<com.hp.hpl.jena.graph.Node,com.hp.hpl.jena.sparql.expr.Expr> getBinding()

Deprecated.

getSqlNode

public SqlNodeOld getSqlNode()

getConstraints

public ConstraintContainer getConstraints()

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