Examples with Graph org.apache.clerezza.commons.rdf.Graph used on opensource projects

Example 21 with Graph

use of org.apache.clerezza.commons.rdf.Graph in project stanbol by apache.

the class RdfResultListTest method testRdfResultSorting.

/**
     * Providing a sorted Iteration over query results stored in an RDF
     * graph is not something trivial. Therefore this test
     */
@Test
public void testRdfResultSorting() {
    SortedMap<Double, RdfRepresentation> sorted = new TreeMap<Double, RdfRepresentation>();
    Graph resultGraph = new IndexedGraph();
    RdfValueFactory vf = new RdfValueFactory(resultGraph);
    IRI resultListNode = new IRI(RdfResourceEnum.QueryResultSet.getUri());
    IRI resultProperty = new IRI(RdfResourceEnum.queryResult.getUri());
    for (int i = 0; i < 100; i++) {
        Double rank;
        do {
            //avoid duplicate keys
            rank = Math.random();
        } while (sorted.containsKey(rank));
        RdfRepresentation r = vf.createRepresentation("urn:sortTest:rep." + i);
        //link the representation with the query result set
        resultGraph.add(new TripleImpl(resultListNode, resultProperty, r.getNode()));
        r.set(RdfResourceEnum.resultScore.getUri(), rank);
        sorted.put(rank, r);
    }
    RdfQueryResultList resultList = new RdfQueryResultList(new FieldQueryImpl(), resultGraph);
    if (log.isDebugEnabled()) {
        log.debug("---DEBUG Sorting ---");
        for (Iterator<Representation> it = resultList.iterator(); it.hasNext(); ) {
            Representation r = it.next();
            log.debug("{}: {}", r.getFirst(RdfResourceEnum.resultScore.getUri()), r.getId());
        }
    }
    log.debug("---ASSERT Sorting ---");
    for (Iterator<Representation> it = resultList.iterator(); it.hasNext(); ) {
        Representation r = it.next();
        Double lastkey = sorted.lastKey();
        Representation last = sorted.get(lastkey);
        Assert.assertEquals("score: " + r.getFirst(RdfResourceEnum.resultScore.getUri()) + " of Representation " + r.getId() + " is not as expected " + last.getFirst(RdfResourceEnum.resultScore.getUri()) + " of Representation " + last.getId() + "!", r, last);
        sorted.remove(lastkey);
    }
    Assert.assertTrue(sorted.isEmpty());
}

Example 22 with Graph

use of org.apache.clerezza.commons.rdf.Graph in project stanbol by apache.

the class ClerezzaModelWriter method toRDF.

private Graph toRDF(QueryResultList<?> resultList) {
    final Graph resultGraph;
    Class<?> type = resultList.getType();
    if (String.class.isAssignableFrom(type)) {
        //create a new ImmutableGraph
        resultGraph = new IndexedGraph();
        for (Object result : resultList) {
            //add a triple to each reference in the result set
            resultGraph.add(new TripleImpl(QUERY_RESULT_LIST, QUERY_RESULT, new IRI(result.toString())));
        }
    } else {
        //first determine the type of the resultList
        final boolean isSignType;
        if (Representation.class.isAssignableFrom(type)) {
            isSignType = false;
        } else if (Representation.class.isAssignableFrom(type)) {
            isSignType = true;
        } else {
            //incompatible type -> throw an Exception
            throw new IllegalArgumentException("Parsed type " + type + " is not supported");
        }
        //special treatment for RdfQueryResultList for increased performance
        if (resultList instanceof RdfQueryResultList) {
            resultGraph = ((RdfQueryResultList) resultList).getResultGraph();
            if (isSignType) {
                //if we build a ResultList for Signs, that we need to do more things
                //first remove all triples representing results
                Iterator<Triple> resultTripleIt = resultGraph.filter(QUERY_RESULT_LIST, QUERY_RESULT, null);
                while (resultTripleIt.hasNext()) {
                    resultTripleIt.next();
                    resultTripleIt.remove();
                }
                //to the Sign IDs
                for (Object result : resultList) {
                    IRI signId = new IRI(((Entity) result).getId());
                    addEntityTriplesToGraph(resultGraph, (Entity) result);
                    resultGraph.add(new TripleImpl(QUERY_RESULT_LIST, QUERY_RESULT, signId));
                }
            }
        } else {
            //any other implementation of the QueryResultList interface
            //create a new graph
            resultGraph = new IndexedGraph();
            if (Representation.class.isAssignableFrom(type)) {
                for (Object result : resultList) {
                    IRI resultId;
                    if (!isSignType) {
                        addRDFTo(resultGraph, (Representation) result);
                        resultId = new IRI(((Representation) result).getId());
                    } else {
                        addRDFTo(resultGraph, (Entity) result);
                        resultId = new IRI(((Entity) result).getId());
                    }
                    //Note: In case of Representation this Triple points to
                    //      the representation. In case of Signs it points to
                    //      the sign.
                    resultGraph.add(new TripleImpl(QUERY_RESULT_LIST, QUERY_RESULT, resultId));
                }
            }
        }
    }
    return resultGraph;
}

Example 23 with Graph

use of org.apache.clerezza.commons.rdf.Graph in project stanbol by apache.

the class ClerezzaRuleStore method removeRule.

@Override
public Recipe removeRule(Recipe recipe, Rule rule) {
    Graph tripleCollection = tcManager.getGraph(recipe.getRecipeID());
    // remove from the graph recipe all the triples having the ruleID as subject.
    Iterator<Triple> triplesIterator = tripleCollection.filter(rule.getRuleID(), null, null);
    while (triplesIterator.hasNext()) {
        tripleCollection.remove(triplesIterator.next());
    }
    // remove from the graph recipe the triple recipeID hasRule ruleID
    tripleCollection.remove(new TripleImpl(recipe.getRecipeID(), Symbols.hasRule, rule.getRuleID()));
    recipe.removeRule(rule);
    return recipe;
}

Example 24 with Graph

use of org.apache.clerezza.commons.rdf.Graph in project stanbol by apache.

the class ClerezzaRuleStore method findRecipesByDescription.

@Override
public RecipeList findRecipesByDescription(String term) {
    String sparql = "SELECT ?recipe " + "WHERE { ?recipe a " + Symbols.Recipe.toString() + " . " + "?recipe " + Symbols.description + " ?description . " + "FILTER (regex(?description, \"" + term + "\", \"i\"))" + "}";
    Graph tripleCollection = tcManager.getGraph(new IRI(recipeIndexLocation));
    RecipeList matchingRecipes = new RecipeList();
    try {
        SelectQuery query = (SelectQuery) QueryParser.getInstance().parse(sparql);
        ResultSet resultSet = tcManager.executeSparqlQuery(query, tripleCollection);
        while (resultSet.hasNext()) {
            SolutionMapping solutionMapping = resultSet.next();
            IRI recipeID = (IRI) solutionMapping.get("recipe");
            try {
                Recipe recipe = getRecipe(recipeID);
                log.info("Found recipe {}.", recipeID.toString());
                matchingRecipes.add(recipe);
                log.info("Found {} matching recipes.", matchingRecipes.size());
            } catch (NoSuchRecipeException e) {
            // in this case go on in the iteration by fetching other matching recipes
            } catch (RecipeConstructionException e) {
            // in this case go on in the iteration by fetching other matching recipes
            }
        }
    } catch (ParseException e) {
        log.error("The sparql query contains errors: ", e);
    }
    return matchingRecipes;
}

Example 25 with Graph

use of org.apache.clerezza.commons.rdf.Graph in project stanbol by apache.

the class ClerezzaRuleStore method findRulesByName.

@Override
public RuleList findRulesByName(String term) {
    String sparql = "SELECT ?recipe ?rule ?description " + "WHERE { " + "?recipe " + Symbols.hasRule + " ?rule . " + "?rule " + Symbols.ruleName + " ?name . " + "?rule " + Symbols.description + " ?description . " + "FILTER (regex(?name, \"" + term + "\", \"i\"))" + "}";
    List<IRI> recipeIDs = listRecipeIDs();
    Graph[] tripleCollections = new Graph[recipeIDs.size()];
    for (int i = 0; i < tripleCollections.length; i++) {
        tripleCollections[i] = tcManager.getGraph(recipeIDs.get(i));
    }
    UnionGraph unionGraph = new UnionGraph(tripleCollections);
    RuleList matchingRules = new RuleList();
    try {
        SelectQuery query = (SelectQuery) QueryParser.getInstance().parse(sparql);
        ResultSet resultSet = tcManager.executeSparqlQuery(query, unionGraph);
        while (resultSet.hasNext()) {
            SolutionMapping solutionMapping = resultSet.next();
            IRI recipeID = (IRI) solutionMapping.get("recipe");
            IRI ruleID = (IRI) solutionMapping.get("rule");
            Literal description = (Literal) solutionMapping.get("description");
            try {
                Recipe recipe = getRecipe(recipeID);
                Rule rule = new RecipeRule(recipe, getRule(recipe, ruleID));
                if (description != null) {
                    rule.setDescription(description.getLexicalForm());
                }
                matchingRules.add(rule);
            } catch (NoSuchRecipeException e) {
            // in this case go on in the iteration by fetching other matching recipes
            } catch (RecipeConstructionException e) {
            // in this case go on in the iteration by fetching other matching recipes
            } catch (NoSuchRuleInRecipeException e) {
            // in this case go on in the iteration by fetching other matching recipes
            }
        }
    } catch (ParseException e) {
        log.error("The sparql query contains errors: ", e);
    }
    return matchingRules;
}