Examples with BindingSet org.openrdf.query.BindingSet used on opensource projects

Example 11 with BindingSet

use of org.openrdf.query.BindingSet in project backstage by zepheira.

the class DomLensNode method generateContent.

protected void generateContent(Value value, Scriptable result, Database database, SailRepositoryConnection connection) {
    ScriptableArrayBuilder arrayBuilder = new ScriptableArrayBuilder();
    String valueType = "text";
    try {
        ExpressionQueryResult eqr = _contentExpression.computeOutputOnValue(value, database, connection);
        if (eqr != null) {
            TupleQueryResult queryResult = eqr.tupleQuery.evaluate();
            try {
                while (queryResult.hasNext()) {
                    BindingSet bindingSet = queryResult.next();
                    Value value2 = bindingSet.getValue(eqr.resultVar.getName());
                    arrayBuilder.add(renderInnerValue(value2, database, connection));
                }
            } finally {
                queryResult.close();
            }
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    DefaultScriptableObject o = new DefaultScriptableObject();
    o.put("valueType", o, valueType);
    o.put("values", o, arrayBuilder.toArray());
    result.put("content", result, o);
}

Example 12 with BindingSet

use of org.openrdf.query.BindingSet in project backstage by zepheira.

the class DomLensNode method testCondition.

protected boolean testCondition(Value value, Scriptable result, Database database, SailRepositoryConnection connection) {
    if (_conditionTest == null) {
        return true;
    }
    boolean r = false;
    try {
        ExpressionQueryResult eqr = _conditionExpression.computeOutputOnValue(value, database, connection);
        if (eqr != null) {
            TupleQueryResult queryResult = eqr.tupleQuery.evaluate();
            try {
                if ("if-exists".equals(_conditionTest)) {
                    r = queryResult.hasNext();
                } else if ("if".equals(_conditionTest)) {
                    if (queryResult.hasNext()) {
                        BindingSet bindingSet = queryResult.next();
                        Value value2 = bindingSet.getValue(eqr.resultVar.getName());
                        if (value2 instanceof Literal) {
                            r = ((Literal) value2).booleanValue();
                        }
                    }
                }
            } finally {
                queryResult.close();
            }
        } else {
            if (value instanceof Literal) {
                r = ((Literal) value).booleanValue();
            }
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    result.put("condition", result, r);
    return r;
}

Example 13 with BindingSet

use of org.openrdf.query.BindingSet in project stanbol by apache.

the class SesameYard method find.

@Override
public final QueryResultList<Representation> find(FieldQuery parsedQuery) throws YardException, IllegalArgumentException {
    if (parsedQuery == null) {
        throw new IllegalArgumentException("The parsed query MUST NOT be NULL!");
    }
    final SparqlFieldQuery query = SparqlFieldQueryFactory.getSparqlFieldQuery(parsedQuery);
    RepositoryConnection con = null;
    TupleQueryResult results = null;
    try {
        con = repository.getConnection();
        con.begin();
        //execute the query
        int limit = QueryUtils.getLimit(query, getConfig().getDefaultQueryResultNumber(), getConfig().getMaxQueryResultNumber());
        results = executeSparqlFieldQuery(con, query, limit, true);
        //parse the results and generate the Representations
        //create an own valueFactors so that all the data of the query results
        //are added to the same Sesame Model
        Model model = new TreeModel();
        RdfValueFactory valueFactory = new RdfValueFactory(model, sesameFactory);
        List<Representation> representations = limit > 0 ? new ArrayList<Representation>(limit) : new ArrayList<Representation>();
        Map<String, URI> bindings = new HashMap<String, URI>(query.getFieldVariableMappings().size());
        for (Entry<String, String> mapping : query.getFieldVariableMappings().entrySet()) {
            bindings.put(mapping.getValue(), sesameFactory.createURI(mapping.getKey()));
        }
        while (results.hasNext()) {
            BindingSet result = results.next();
            Value value = result.getValue(query.getRootVariableName());
            if (value instanceof URI) {
                URI subject = (URI) value;
                //link the result with the query result
                model.add(queryRoot, queryResult, subject);
                //now copy over the other selected data
                for (String binding : result.getBindingNames()) {
                    URI property = bindings.get(binding);
                    if (property != null) {
                        model.add(subject, property, result.getValue(binding));
                    }
                //else no mapping for the query.getRootVariableName()
                }
                //create a representation and add it to the results
                representations.add(valueFactory.createRdfRepresentation(subject));
            }
        //ignore non URI results
        }
        con.commit();
        return new SesameQueryResultList(model, query, representations);
    } catch (RepositoryException e) {
        throw new YardException("Unable to execute findReferences query", e);
    } catch (QueryEvaluationException e) {
        throw new YardException("Unable to execute findReferences query", e);
    } finally {
        if (results != null) {
            //close the result if present
            try {
                results.close();
            } catch (QueryEvaluationException ignore) {
            /* ignore */
            }
        }
        if (con != null) {
            try {
                con.close();
            } catch (RepositoryException ignore) {
            /* ignore */
            }
        }
    }
}