package net.fortytwo.ripple.libs.graph;
import net.fortytwo.flow.Sink;
import net.fortytwo.ripple.RippleException;
import net.fortytwo.ripple.model.ModelConnection;
import net.fortytwo.ripple.model.Operator;
import net.fortytwo.ripple.model.RDFPredicateMapping;
import net.fortytwo.ripple.model.RDFValue;
import net.fortytwo.ripple.model.RippleList;
import net.fortytwo.ripple.model.StackMapping;
/**
* @author Joshua Shinavier (http://fortytwo.net)
*/
public class InContext extends RDFPredicateStackMapping {
private static final String[] IDENTIFIERS = {
GraphLibrary.NS_2013_03 + "in-context",
GraphLibrary.NS_2007_08 + "inContext"};
public String[] getIdentifiers() {
return IDENTIFIERS;
}
public InContext() throws RippleException {
super(false);
this.inverse = new InContext(this);
}
private InContext(final StackMapping original) throws RippleException {
super(true);
this.inverse = original;
}
public Parameter[] getParameters() {
return new Parameter[]{
new Parameter("s", null, true),
new Parameter("p", null, true),
new Parameter("g", null, true)};
}
public String getComment() {
return "s p g => o";
}
public void apply(final RippleList arg,
final Sink<RippleList> solutions,
final ModelConnection mc) throws RippleException {
RippleList stack = arg;
RDFValue context = stack.getFirst().toRDF(mc);
stack = stack.getRest();
RDFValue pred = stack.getFirst().toRDF(mc);
stack = stack.getRest();
RDFPredicateMapping mapping = getMapping(pred, context);
solutions.put(
stack.push(new Operator(mapping)));
}
}