Examples with Var org.apache.jena.sparql.core.Var used on opensource projects

Example 26 with Var

use of org.apache.jena.sparql.core.Var in project jena by apache.

the class SPARQLParser10 method Project.

public final void Project() throws ParseException {
    Var v;
    Expr expr;
    Node n;
    jj_consume_token(SELECT);
    getQuery().setQuerySelectType();
    switch((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
        case DISTINCT:
        case REDUCED:
            switch((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
                case DISTINCT:
                    jj_consume_token(DISTINCT);
                    getQuery().setDistinct(true);
                    break;
                case REDUCED:
                    jj_consume_token(REDUCED);
                    getQuery().setReduced(true);
                    break;
                default:
                    jj_la1[4] = jj_gen;
                    jj_consume_token(-1);
                    throw new ParseException();
            }
            break;
        default:
            jj_la1[5] = jj_gen;
            ;
    }
    allowAggregatesInExpressions = true;
    switch((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
        case VAR1:
        case VAR2:
            label_3: while (true) {
                v = Var();
                getQuery().addResultVar(v);
                getQuery().setQueryResultStar(false);
                switch((jj_ntk == -1) ? jj_ntk() : jj_ntk) {
                    case VAR1:
                    case VAR2:
                        ;
                        break;
                    default:
                        jj_la1[6] = jj_gen;
                        break label_3;
                }
            }
            break;
        case STAR:
            jj_consume_token(STAR);
            getQuery().setQueryResultStar(true);
            break;
        default:
            jj_la1[7] = jj_gen;
            jj_consume_token(-1);
            throw new ParseException();
    }
    allowAggregatesInExpressions = false;
}

Example 27 with Var

use of org.apache.jena.sparql.core.Var in project jena by apache.

the class SingleQuadHolder method mapValue.

// convert variable if in map
private Node mapValue(Node n, Map<Var, Node> values) {
    Node retval = null;
    if (n.isVariable()) {
        Var v = Var.alloc(n);
        retval = values.get(v);
    }
    return retval == null ? n : retval;
}

Example 28 with Var

use of org.apache.jena.sparql.core.Var in project jena by apache.

the class ValuesHandler method addValueRow.

/**
	 * Add the values for the variables. There must be one value for each value
	 * var.
	 * 
	 * @param values
	 *            the collection of values to add.
	 * @return The builder for chaining.
	 */
public void addValueRow(Collection<Node> values) {
    if (values.size() != valuesTable.size()) {
        throw new IllegalArgumentException(String.format("Number of values (%s) must match number of columns %s", values.size(), valuesTable.size()));
    }
    Iterator<Node> iter = values.iterator();
    for (Var v : valuesTable.keySet()) {
        List<Node> lst = getNodesList(v);
        lst.add(iter.next());
    }
}

Example 29 with Var

use of org.apache.jena.sparql.core.Var in project jena by apache.

the class ValuesHandler method addAll.

/**
	 * Add the ValuesHandler values to this values Handler.
	 * 
	 * @param handler
	 *            the handler that has the values to add.
	 */
public void addAll(ValuesHandler handler) {
    if (handler.valuesTable.size() == 0) {
        return;
    }
    // assume our table is square.
    int count = 0;
    if (valuesTable.size() > 0) {
        count = valuesTable.values().iterator().next().size();
    }
    for (Var var : handler.valuesTable.keySet()) {
        List<Node> lst = valuesTable.get(var);
        if (lst == null) {
            lst = new ArrayList<Node>();
            lst.addAll(Arrays.asList(new Node[count]));
            valuesTable.put(var, lst);
        }
        lst.addAll(handler.valuesTable.get(var));
    }
    // keep table square by adding nulls to the vars that are not in the
    // other table.
    List<Var> lst = new ArrayList<Var>(valuesTable.keySet());
    lst.removeAll(handler.valuesTable.keySet());
    if (!lst.isEmpty()) {
        count = handler.valuesTable.values().iterator().next().size();
        for (Var var : lst) {
            List<Node> lst2 = valuesTable.get(var);
            lst2.addAll(Arrays.asList(new Node[count]));
        }
    }
}

Example 30 with Var

use of org.apache.jena.sparql.core.Var in project jena by apache.

the class DatasetHandler method setVars.

/**
	 * Set the variables for field names that contain lists of strings.
	 * 
	 * Strings that start with "?" are assumed to be variable names and will be replaced
	 * with matching node.toString() values. 
	 * 
	 * @param values The values to set.
	 * @param fieldName The field name in Query that contain a list of strings.
	 */
private void setVars(Map<Var, Node> values, List<String> lst) {
    if (values.isEmpty() || lst == null || lst.isEmpty()) {
        return;
    }
    for (int i = 0; i < lst.size(); i++) {
        String s = lst.get(i);
        Node n = null;
        if (s.startsWith("?")) {
            Var v = Var.alloc(s.substring(1));
            n = values.get(v);
            lst.set(i, n == null ? s : n.toString());
        }
    }
}