Examples of com.hp.hpl.jena.reasoner.TriplePattern

com.hp.hpl.jena.reasoner.TriplePattern
Datastructure which defines a triple pattern as used in simple rules and in find interfaces.
Wildcards are recorded by using Node_RuleVariable entries rather than nulls because they can be named. If a null is specified that is converted to a variable of name "". Note that whilst some engines might simply require Node_Variables the forward engine requires variables represented using the more specialized subclass - Node_RuleVariable.

It would make more sense to have TriplePattern subclass Triple but that is final for some strange reason.

        cache.addRelation(new Triple(d, closedP, c));
        cache.addRelation(new Triple(d, closedP, e));
        cache.addRelation(new Triple(c, closedP, e));
        cache.addRelation(new Triple(c, closedP, b));
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(c, directP, null)),
                new Object[] {
                    new Triple(c, closedP, e),
                    new Triple(c, closedP, g),
                    new Triple(c, closedP, b),
                    new Triple(c, closedP, d),
                    new Triple(c, closedP, c),
                });
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(null, directP, c)),
                new Object[] {
                    new Triple(a, closedP, c),
                    new Triple(b, closedP, c),
                    new Triple(d, closedP, c),
                    new Triple(f, closedP, c),
                    new Triple(c, closedP, c),
                });
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(f, closedP, null)),
                new Object[] {
                    new Triple(f, closedP, f),
                    new Triple(f, closedP, b),
                    new Triple(f, closedP, c),
                    new Triple(f, closedP, d),

View Full Code Here

        cache.addRelation(new Triple(e, closedP, f));
        cache.addRelation(new Triple(f, closedP, d));
        cache.addRelation(new Triple(b, closedP, d));
        cache.addRelation(new Triple(f, closedP, c));
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(a, directP, null)),
                new Object[] {
                new Triple(a, closedP, a),
                new Triple(a, closedP, b),
                new Triple(a, closedP, c),
                new Triple(a, closedP, d),
                new Triple(a, closedP, e),
                new Triple(a, closedP, f),
                });
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(null, directP, a)),
                new Object[] {
                new Triple(a, closedP, a),
                new Triple(b, closedP, a),
                new Triple(c, closedP, a),
                new Triple(d, closedP, a),

View Full Code Here

    public void testEquivalencesSimple() {
        TransitiveGraphCache cache = new TransitiveGraphCache(directP, closedP);
        cache.addRelation(new Triple(a, closedP, b));
        cache.addRelation(new Triple(b, closedP, a));
        TestUtil.assertIteratorValues(this, 
                cache.find(new TriplePattern(null, closedP, null)),
                new Object[] {
                new Triple(a, closedP, b),
                new Triple(b, closedP, a),
                new Triple(b, closedP, b),
                new Triple(a, closedP, a),
        });
        TestUtil.assertIteratorLength( cache.find(new TriplePattern(null, closedP, null)), 4);
    }

View Full Code Here

        cache.addRelation(new Triple(d, closedP, c));
        
        cache.addRelation(new Triple(b, closedP, d));
        cache.addRelation(new Triple(d, closedP, b));


        assertTrue("Test eq", cache.contains(new TriplePattern(a, closedP, d)));
    }

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            classNode = ((NodeClauseEntry) classClauseEntry).getNode();
        } else {
            throw new RuleAtomCallExeption(getClass());
        }


        return (T) new TriplePattern(argumnetNode, Node_RuleVariable.createURI(RDF.type.getURI()), classNode);


    }

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            objectNode = ((NodeClauseEntry) argument2ClauseEntry).getNode();
        } else {
            throw new RuleAtomCallExeption(getClass());
        }


        return (T) new TriplePattern(subjectNode, predicateNode, objectNode);


    }

View Full Code Here

            objectNode = ((NodeClauseEntry) argument2ClauseEntry).getNode();
        } else {
            throw new RuleAtomCallExeption(getClass());
        }


        return (T) new TriplePattern(subjectNode, predicateNode, objectNode);
    }

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            throw new RuleAtomCallExeption(getClass());
        }


        Node blank = Node_RuleVariable.createAnon();


        return (T) new TriplePattern(arg2Node, arg1Node, blank);


    }

View Full Code Here

    /**
     * Clone a clause, cloning any embedded variables.
     */
    private ClauseEntry cloneClause(ClauseEntry clause, Map<Node_RuleVariable, Node> vmap, BindingEnvironment env) {
        if (clause instanceof TriplePattern) {
            TriplePattern tp = (TriplePattern)clause;
            return new TriplePattern (
                            cloneNode(tp.getSubject(), vmap, env),
                            cloneNode(tp.getPredicate(), vmap, env),
                            cloneNode(tp.getObject(), vmap, env)
                        );
        } else {
            return cloneFunctor((Functor)clause, vmap, env);
        }
    }

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                    throw new ParserException("Functors not allowed in subject position of pattern", this);
                }
                if (Functor.isFunctor(nodes.get(1))) {
                    throw new ParserException("Functors not allowed in predicate position of pattern", this);
                }
                return new TriplePattern(nodes.get(0), nodes.get(1), nodes.get(2));
            } else if (token.equals("[")) {
                nextToken();
                return doParseRule(true);
            } else {
                String name = nextToken();

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