Examples with Item org.eclipse.wst.xml.xpath2.api.Item used on opensource projects

Example 6 with Item

use of org.eclipse.wst.xml.xpath2.api.Item in project webtools.sourceediting by eclipse.

the class FsPlus method do_math_op.

// voodoo
/**
 * Mathematical operation on the arguments.
 *
 * @param args
 *            input arguments.
 * @param type
 *            type of arguments.
 * @param mname
 *            Method name for template simulation.
 * @param sc
 * @throws DynamicError
 *             Dynamic error.
 * @return Result of operation.
 */
public static ResultSequence do_math_op(Collection args, Class type, String mname) throws DynamicError {
    // sanity check args + convert em
    if (args.size() != 2)
        DynamicError.throw_type_error();
    Collection cargs = convert_args(args);
    if (cargs.size() == 0)
        return ResultBuffer.EMPTY;
    // make sure arugments are good [at least the first one]
    Iterator argi = cargs.iterator();
    Item arg = ((org.eclipse.wst.xml.xpath2.api.ResultSequence) argi.next()).item(0);
    org.eclipse.wst.xml.xpath2.api.ResultSequence arg2 = (org.eclipse.wst.xml.xpath2.api.ResultSequence) argi.next();
    if (!(type.isInstance(arg)))
        DynamicError.throw_type_error();
    // here is da ownage
    try {
        Class[] margsdef = { ResultSequence.class };
        Method method = null;
        method = type.getMethod(mname, margsdef);
        Object[] margs = { arg2 };
        return (ResultSequence) method.invoke(arg, margs);
    } catch (NoSuchMethodException err) {
        System.out.println("NoSuchMethodException: " + err.getMessage());
        assert false;
    } catch (IllegalAccessException err) {
        System.out.println("IllegalAccessException: " + err.getMessage());
        assert false;
    } catch (InvocationTargetException err) {
        Throwable ex = err.getTargetException();
        if (ex instanceof DynamicError) {
            throw (DynamicError) ex;
        } else {
            throw new RuntimeException(ex);
        }
    }
    // unreach!
    return null;
}

Example 7 with Item

use of org.eclipse.wst.xml.xpath2.api.Item in project webtools.sourceediting by eclipse.

the class Function method getResultSetForArityZero.

protected static ResultSequence getResultSetForArityZero(EvaluationContext ec) throws DynamicError {
    ResultSequence rs = ResultSequenceFactory.create_new();
    Item contextItem = ec.getContextItem();
    if (contextItem != null) {
        // if context item is defined, then that is the default argument
        // to fn:string function
        rs.add(new XSString(contextItem.getStringValue()));
    } else {
        throw DynamicError.contextUndefined();
    }
    return rs;
}

Example 8 with Item

use of org.eclipse.wst.xml.xpath2.api.Item in project webtools.sourceediting by eclipse.

the class Function method convert_argument.

// convert argument according to section 3.1.5 of xpath 2.0 spec
/**
 * Convert the input argument according to section 3.1.5 of specification.
 *
 * @param arg
 *            input argument.
 * @param expected
 *            Expected Sequence type.
 * @throws DynamicError
 *             Dynamic error.
 * @return Converted argument.
 */
public static org.eclipse.wst.xml.xpath2.api.ResultSequence convert_argument(org.eclipse.wst.xml.xpath2.api.ResultSequence arg, SeqType expected) throws DynamicError {
    ResultBuffer result = new ResultBuffer();
    // XXX: Should use type_class instead and use item.getClass().isAssignableTo(expected.type_class())
    AnyType expected_type = expected.type();
    // expected is atomic
    if (expected_type instanceof AnyAtomicType) {
        AnyAtomicType expected_aat = (AnyAtomicType) expected_type;
        // atomize
        org.eclipse.wst.xml.xpath2.api.ResultSequence rs = FnData.atomize(arg);
        // cast untyped to expected type
        for (Iterator i = rs.iterator(); i.hasNext(); ) {
            AnyType item = (AnyType) i.next();
            if (item instanceof XSUntypedAtomic) {
                // create a new item of the expected
                // type initialized with from the string
                // value of the item
                ResultSequence converted = null;
                if (expected_aat instanceof XSString) {
                    XSString strType = new XSString(item.getStringValue());
                    converted = ResultSequenceFactory.create_new(strType);
                } else {
                    converted = ResultSequenceFactory.create_new(item);
                }
                result.concat(converted);
            } else // xs:anyURI promotion to xs:string
            if (item instanceof XSAnyURI && expected_aat instanceof XSString) {
                result.add(new XSString(item.getStringValue()));
            } else // numeric type promotion
            if (item instanceof NumericType) {
                if (expected_aat instanceof XSDouble) {
                    XSDouble doubleType = new XSDouble(item.getStringValue());
                    result.add(doubleType);
                } else {
                    result.add(item);
                }
            } else {
                result.add(item);
            }
        }
        // do sequence type matching on converted arguments
        return expected.match(result.getSequence());
    } else {
        // do sequence type matching on converted arguments
        return expected.match(arg);
    }
}

Example 9 with Item

use of org.eclipse.wst.xml.xpath2.api.Item in project webtools.sourceediting by eclipse.

the class FnDistinctValues method distinct_values.

/**
 * Distinct-values operation.
 *
 * @param args
 *            Result from the expressions evaluation.
 * @throws DynamicError
 *             Dynamic error.
 * @return Result of fn:distinct-values operation.
 */
public static ResultSequence distinct_values(Collection args, DynamicContext context) throws DynamicError {
    ResultBuffer rs = new ResultBuffer();
    // get args
    Iterator citer = args.iterator();
    ResultSequence arg1 = (ResultSequence) citer.next();
    ResultSequence arg2 = ResultBuffer.EMPTY;
    if (citer.hasNext()) {
        arg2 = (ResultSequence) citer.next();
    }
    String collationURI = context.getCollationProvider().getDefaultCollation();
    if (!arg2.empty()) {
        XSString collation = (XSString) arg2.item(0);
        collationURI = collation.getStringValue();
    }
    for (Iterator iter = arg1.iterator(); iter.hasNext(); ) {
        AnyAtomicType atomizedItem = (AnyAtomicType) FnData.atomize((Item) iter.next());
        if (!contains(rs, atomizedItem, context, collationURI))
            rs.add(atomizedItem);
    }
    return rs.getSequence();
}

Example 10 with Item

use of org.eclipse.wst.xml.xpath2.api.Item in project webtools.sourceediting by eclipse.

the class FnStringJoin method string_join.

/**
 * Join the arguments.
 *
 * @param args
 *            are joined.
 * @throws DynamicError
 *             Dynamic error.
 * @return The result of the arguments being joined together.
 */
public static ResultSequence string_join(Collection args) throws DynamicError {
    Collection cargs = Function.convert_arguments(args, expected_args());
    Iterator argi = cargs.iterator();
    ResultSequence arg1 = (ResultSequence) argi.next();
    ResultSequence arg2 = (ResultSequence) argi.next();
    String result = "";
    String separator = ((XSString) arg2.first()).value();
    StringBuffer buf = new StringBuffer();
    for (Iterator i = arg1.iterator(); i.hasNext(); ) {
        XSString item = (XSString) i.next();
        buf.append(item.value());
        if (i.hasNext())
            buf.append(separator);
    }
    result = buf.toString();
    return new XSString(result);
}