Examples with BindingMap org.apache.jena.sparql.engine.binding.BindingMap used on opensource projects

Example 11 with BindingMap

use of org.apache.jena.sparql.engine.binding.BindingMap in project jena by apache.

the class TestResultSet method make2.

private ResultSet make2(String var, Node val) {
    BindingMap b1 = BindingFactory.create();
    b1.add(Var.alloc(var), val);
    BindingMap b2 = BindingFactory.create();
    b2.add(Var.alloc(var), val);
    List<String> vars = new ArrayList<>();
    vars.add(var);
    List<Binding> solutions = new ArrayList<>();
    solutions.add(b1);
    solutions.add(b2);
    QueryIterator qIter = new QueryIterPlainWrapper(solutions.iterator(), null);
    ResultSet rs = new ResultSetStream(vars, null, qIter);
    return rs;
}

Example 12 with BindingMap

use of org.apache.jena.sparql.engine.binding.BindingMap in project jena by apache.

the class SQLBridge2 method assembleBinding.

@Override
protected Binding assembleBinding(ResultSetJDBC rsHolder, Binding parent) {
    BindingMap b = BindingFactory.create(parent);
    ResultSet rs = rsHolder.get();
    for (Var v : super.getProject()) {
        if (!v.isNamedVar())
            // Skip bNodes and system variables
            continue;
        String codename = super.getSqlName(v);
        if (codename == null)
            // Not mentioned in query.
            continue;
        try {
            int type = rs.getInt(SQLUtils.gen(codename, "type"));
            // Test with "wasNull()" for safety
            if (rs.wasNull())
                continue;
            String lexColName = SQLUtils.gen(codename, "lex");
            // Get lexical - overriden by Oracle-specific code.
            String lex = getLexFromResultSet(rs, codename);
            //                String lex = rs.getString(lexColName) ;
            if (lex == null)
                lex = "";
            String datatype = rs.getString(SQLUtils.gen(codename, "datatype"));
            String lang = rs.getString(SQLUtils.gen(codename, "lang"));
            ValueType vType = ValueType.lookup(type);
            Node r = makeNode(lex, datatype, lang, vType);
            b.add(v, r);
        } catch (SQLException ex) {
        // Unknown variable?
        //log.warn("Not reconstructed: "+n) ;
        }
    }
    return b;
}

Example 13 with BindingMap

use of org.apache.jena.sparql.engine.binding.BindingMap in project jena by apache.

the class Thift2Binding method moveToNext.

@Override
protected Binding moveToNext() {
    try {
        row.read(protocol);
    } catch (TTransportException e) {
        return null;
    } catch (TException e) {
        TRDF.exception(e);
    }
    if (row.getRowSize() != vars.size())
        throw new RiotThriftException(String.format("Vars %d : Row length : %d", vars.size(), row.getRowSize()));
    BindingMap b = BindingFactory.create();
    for (int i = 0; i < vars.size(); i++) {
        // Old school
        Var v = vars.get(i);
        RDF_Term rt = row.getRow().get(i);
        if (rt.isSetUndefined())
            continue;
        Node n = ThriftConvert.convert(rt);
        b.add(v, n);
    }
    row.clear();
    return b;
}

Example 14 with BindingMap

use of org.apache.jena.sparql.engine.binding.BindingMap in project jena by apache.

the class QueryIteratorMapped method moveToNextBinding.

@Override
protected Binding moveToNextBinding() {
    Binding b = super.moveToNextBinding();
    if (this.varMapping == null)
        return b;
    // Apply remapping
    BindingMap binding = BindingFactory.create();
    Iterator<Var> vs = b.vars();
    while (vs.hasNext()) {
        Var v = vs.next();
        Node value = b.get(v);
        // Only remap non-null variables for which there is a mapping
        if (value == null)
            continue;
        if (this.varMapping.containsKey(v)) {
            binding.add(this.varMapping.get(v), value);
        }
    }
    return binding;
}

Example 15 with BindingMap

use of org.apache.jena.sparql.engine.binding.BindingMap in project jena by apache.

the class RDFInput method buildBinding.

private Binding buildBinding(Resource soln) {
    // foreach row
    BindingMap rb = BindingFactory.create();
    StmtIterator bindingIter = soln.listProperties(ResultSetGraphVocab.binding);
    for (; bindingIter.hasNext(); ) {
        Resource binding = bindingIter.nextStatement().getResource();
        String var = binding.getRequiredProperty(ResultSetGraphVocab.variable).getString();
        try {
            RDFNode val = binding.getRequiredProperty(ResultSetGraphVocab.value).getObject();
            rb.add(Var.alloc(var), val.asNode());
        } catch (PropertyNotFoundException ex) {
            Log.warn(this, "Failed to get value for ?" + var);
        }
    // We include the value even if it is the marker term "rs:undefined"
    // if ( val.equals(ResultSetVocab.undefined))
    // continue ;
    // The ResultSetFormatter code equates null (not found) with
    // rs:undefined. When Jena JUnit testing, it does not matter if the
    // recorded result has the term absent or explicitly undefined.
    }
    bindingIter.close();
    return rb;
}