package org.ontoware.rdf2go.impl.jena;
import org.ontoware.rdf2go.exception.ModelRuntimeException;
import org.ontoware.rdf2go.model.Statement;
import org.ontoware.rdf2go.model.impl.AbstractStatement;
import org.ontoware.rdf2go.model.node.Resource;
import org.ontoware.rdf2go.model.node.URI;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.hp.hpl.jena.graph.Node;
import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.rdf.model.Model;
/**
* A Jena 2.9 implementation of the {@linkplain Statement} interface.
*
* @version $Revision$
*
*/
public class StatementJena29Impl extends AbstractStatement implements Statement {
private static final long serialVersionUID = -144220629238562048L;
private static Logger log = LoggerFactory.getLogger(StatementJena29Impl.class);
private Node c, s, p, o;
private org.ontoware.rdf2go.model.Model model;
/**
* Contruct a quadruple or supply {@code null} as context.
*
* @param c
* @param s may not be {@code null}
* @param p may not be {@code null}
* @param o may not be {@code null}
*/
public StatementJena29Impl(Node c, Node s, Node p, Node o) {
assert s != null;
assert p != null;
assert o != null;
this.c = c;
this.s = s;
this.p = p;
this.o = o;
}
/**
* Construct a statement.
*
* @param model
* @param s may not be {@code null}
* @param p may not be {@code null}
* @param o may not be {@code null}
*/
public StatementJena29Impl(org.ontoware.rdf2go.model.Model model, Node s, Node p, Node o) {
assert s != null;
assert p != null;
assert o != null;
this.model = model;
this.s = s;
this.p = p;
this.o = o;
}
public com.hp.hpl.jena.rdf.model.Statement toJenaStatement(Model jenaModel) {
Triple t = new Triple(this.s, this.p, this.o);
return jenaModel.asStatement(t);
}
@Override
public Resource getSubject() {
try {
return (Resource)TypeConversion.toRDF2Go(this.s);
} catch(ModelRuntimeException e) {
throw new ModelRuntimeException(e);
}
}
@Override
public URI getPredicate() {
try {
return (URI)TypeConversion.toRDF2Go(this.p);
} catch(ModelRuntimeException e) {
throw new ModelRuntimeException(e);
}
}
@Override
public org.ontoware.rdf2go.model.node.Node getObject() {
try {
return TypeConversion.toRDF2Go(this.o);
} catch(ModelRuntimeException e) {
throw new ModelRuntimeException(e);
}
}
@Override
public String toString() {
return getSubject() + "--" + getPredicate() + "--" + getObject();
}
public org.ontoware.rdf2go.model.Model getModel() {
return this.model;
}
@Override
public boolean equals(Object other) {
if(other instanceof Statement) {
Statement stmt = (Statement)other;
boolean e = super.equals(stmt);
log.debug("statements are equal? " + e + " now the context");
if(e && stmt.getContext() != null && this.getContext() != null)
return stmt.getContext().equals(this.getContext());
else
return e;
}
return false;
}
@Override
public int hashCode() {
return super.hashCode();
}
@Override
public URI getContext() {
/**
* Return the graph URI or {@code null} depending on how this Statement
* was contructed
*/
if (this.c != null) {
return (URI)TypeConversion.toRDF2Go(this.c);
}
else if (this.model != null) {
return this.model.getContextURI();
}
else {
return null;
}
}
}