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

Example 26 with BindingBuilder

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

the class version method execEvaluated.

@Override
public QueryIterator execEvaluated(Binding binding, PropFuncArg subject, Node predicate, PropFuncArg object, ExecutionContext execCxt) {
    List<Binding> results = new ArrayList<>();
    Node subj = subject.getArg();
    Node obj = object.getArg();
    Iterator<SystemInfo> iter = SystemARQ.registeredSubsystems();
    for (; iter.hasNext(); ) {
        SystemInfo info = iter.next();
        if (!isSameOrVar(subj, info.getIRI()))
            continue;
        Node version = NodeFactory.createLiteral(info.getVersion());
        if (!isSameOrVar(obj, version))
            continue;
        BindingBuilder builder = Binding.builder(binding);
        if (subj.isVariable())
            builder.add(Var.alloc(subj), info.getIRI());
        if (subj.isVariable())
            builder.add(Var.alloc(obj), version);
        results.add(builder.build());
    }
    return QueryIterPlainWrapper.create(results.iterator(), execCxt);
}

Example 27 with BindingBuilder

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

the class CSVInputIterator method parseLine.

private Binding parseLine(List<Var> vars, String line) {
    BindingBuilder rowBuilder = Binding.builder();
    List<String> terms = new ArrayList<>();
    int idx = 0;
    while (idx < line.length()) {
        char ch = line.charAt(idx);
        StringBuilder s = new StringBuilder();
        if (ch == '\"' || ch == '\'') {
            char qCh = ch;
            idx++;
            while (idx < line.length()) {
                ch = line.charAt(idx);
                idx++;
                if (ch == qCh)
                    break;
                // escapes??
                s.append(ch);
            }
            if (ch != qCh)
                throw new QueryException(String.format("Error Parsing CSV results at Line %d  - Unterminated quoted string", this.lineNum));
            if (idx < line.length()) {
                ch = line.charAt(idx);
                if (ch != ',')
                    throw new QueryException(String.format("Error Parsing CSV results at Line %d - Expected comma after quote", this.lineNum));
            }
        } else {
            while (idx < line.length()) {
                ch = line.charAt(idx);
                if (ch == ',')
                    break;
                idx++;
                // escapes
                s.append(ch);
            }
        }
        terms.add(s.toString());
        // Looking at , or EOL.
        if (ch == ',' && idx == line.length() - 1) {
            // EOL
            terms.add("");
            break;
        }
        // Skip ","
        idx++;
    }
    if (terms.size() != vars.size())
        throw new QueryException(String.format("Error Parsing CSV results at Line %d - The result row '%s' has %d items when %d was expected", this.lineNum, line, terms.size(), vars.size()));
    for (int i = 0; i < vars.size(); i++) rowBuilder.add(vars.get(i), NodeFactory.createLiteral(terms.get(i)));
    return rowBuilder.build();
}

Example 28 with BindingBuilder

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

the class RDFInput method buildRowsOrdered.

private void buildRowsOrdered(Resource root, int count) {
    Model m = root.getModel();
    BindingBuilder builder = Binding.builder();
    // Assume one result set per file.
    for (int index = 1; ; index++) {
        Literal ind = m.createTypedLiteral(index, XSDDatatype.XSDinteger);
        StmtIterator sIter = m.listStatements(null, ResultSetGraphVocab.index, ind);
        if (!sIter.hasNext())
            break;
        Statement s = sIter.nextStatement();
        if (sIter.hasNext())
            Log.warn(this, "More than one solution: index = " + index);
        Resource soln = s.getSubject();
        Binding rb = buildBinding(builder, soln);
        rows.add(rb);
        sIter.close();
    }
    if (rows.size() != count)
        Log.warn(this, "Found " + rows.size() + ": expected " + count);
}

Example 29 with BindingBuilder

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

the class RDFInput method buildRows.

private void buildRows(Resource root) {
    // Now the results themselves
    int count = 0;
    StmtIterator solnIter = root.listProperties(ResultSetGraphVocab.solution);
    BindingBuilder builder = Binding.builder();
    for (; solnIter.hasNext(); ) {
        Resource soln = solnIter.nextStatement().getResource();
        count++;
        Binding rb = buildBinding(builder, soln);
        rows.add(rb);
    }
    solnIter.close();
    if (root.hasProperty(ResultSetGraphVocab.size)) {
        try {
            int size = root.getRequiredProperty(ResultSetGraphVocab.size).getInt();
            if (size != count)
                Log.warn(this, "Warning: Declared size = " + size + " : Count = " + count);
        } catch (JenaException rdfEx) {
        }
    }
}

Example 30 with BindingBuilder

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

the class versionARQ method execEvaluated.

@Override
public QueryIterator execEvaluated(Binding binding, PropFuncArg subject, Node predicate, PropFuncArg object, ExecutionContext execCxt) {
    BindingBuilder builder = Binding.builder(binding);
    Node subj = subject.getArg();
    if (!isSameOrVar(subj, arq))
        IterLib.noResults(execCxt);
    if (subj.isVariable())
        builder.add(Var.alloc(subj), arq);
    Node obj = object.getArg();
    if (!isSameOrVar(obj, version))
        IterLib.noResults(execCxt);
    if (obj.isVariable())
        builder.add(Var.alloc(obj), version);
    return IterLib.result(builder.build(), execCxt);
}