Examples with ExprEvalException org.apache.jena.sparql.expr.ExprEvalException used on opensource projects

Example 16 with ExprEvalException

use of org.apache.jena.sparql.expr.ExprEvalException in project jena by apache.

the class BindingComparator method compare.

// Compare bindings by iterating.
// Node comparsion is:
//  Compare by 
@Override
public int compare(Binding bind1, Binding bind2) {
    for (SortCondition sc : conditions) {
        if (sc.expression == null) {
            throw new QueryExecException("Broken sort condition");
        }
        NodeValue nv1 = null;
        NodeValue nv2 = null;
        try {
            nv1 = sc.expression.eval(bind1, env);
        } catch (VariableNotBoundException ex) {
        } catch (ExprEvalException ex) {
            Log.warn(this, ex.getMessage());
        }
        try {
            nv2 = sc.expression.eval(bind2, env);
        } catch (VariableNotBoundException ex) {
        } catch (ExprEvalException ex) {
            Log.warn(this, ex.getMessage());
        }
        Node n1 = NodeValue.toNode(nv1);
        Node n2 = NodeValue.toNode(nv2);
        int x = compareNodes(nv1, nv2, sc.direction);
        if (x != Expr.CMP_EQUAL) {
            return x;
        }
    }
    // Same by the SortConditions - now do any extra tests to make sure they are unique.
    return compareBindingsSyntactic(bind1, bind2);
//return 0 ;
}

Example 17 with ExprEvalException

use of org.apache.jena.sparql.expr.ExprEvalException in project jena by apache.

the class date method exec.

@Override
public NodeValue exec(NodeValue v) {
    if (!v.isString()) {
        Log.warn(this, "date: argument not a string: " + v);
        throw new ExprEvalException("date: argument not a string: " + v);
    }
    String lexicalForm = v.getString();
    // Quite picky about format
    if (!lexicalForm.matches("\\d{4}-\\d{2}-\\d{2}")) {
        Log.warn(this, "date: argument not in date format: " + v);
        throw new ExprEvalException("date: argument not in date format: " + v);
    }
    lexicalForm = lexicalForm + "T00:00:00Z";
    NodeValue nv = NodeValue.makeNode(lexicalForm, XSDDatatype.XSDdateTime);
    return nv;
}

Example 18 with ExprEvalException

use of org.apache.jena.sparql.expr.ExprEvalException in project jena by apache.

the class evenInteger method exec.

@Override
public NodeValue exec(NodeValue x) {
    if (!x.isInteger())
        throw new ExprEvalException("evenInteger: Not an intger: " + x);
    int i = x.getInteger().getLowestSetBit();
    boolean b = (i == -1) || (i != 0);
    return NodeValue.makeNodeBoolean(b);
}

Example 19 with ExprEvalException

use of org.apache.jena.sparql.expr.ExprEvalException in project jena by apache.

the class factorial method exec.

@Override
public NodeValue exec(NodeValue v) {
    BigInteger i = v.getInteger();
    switch(i.compareTo(BigInteger.ZERO)) {
        case 0:
            // 0! is 1
            return NodeValue.makeInteger(BigInteger.ONE);
        case -1:
            // Negative factorial is error
            throw new ExprEvalException("Cannot evaluate a negative factorial");
        case 1:
            BigInteger res = i.add(BigInteger.ZERO);
            i = i.subtract(BigInteger.ONE);
            while (i.compareTo(BigInteger.ZERO) != 0) {
                res = res.multiply(i);
                i = i.subtract(BigInteger.ONE);
            }
            return NodeValue.makeInteger(res);
        default:
            throw new ExprEvalException("Unexpecte comparison result");
    }
}

Example 20 with ExprEvalException

use of org.apache.jena.sparql.expr.ExprEvalException in project jena by apache.

the class sprintf method exec.

@Override
public NodeValue exec(List<NodeValue> args) {
    if (args.size() < 2)
        throw new ExprEvalException(Lib.className(this) + ": Wrong number of arguments: " + args.size() + " : [wanted at least 2]");
    NodeValue v1 = args.get(0);
    List<NodeValue> allArgs = new ArrayList<>();
    for (int i = 1; i < args.size(); i++) allArgs.add(args.get(i));
    return XSDFuncOp.javaSprintf(v1, allArgs);
}