Examples with XObject org.apache.xpath.objects.XObject used on opensource projects

Example 36 with XObject

use of org.apache.xpath.objects.XObject in project j2objc by google.

the class ContextMatchStepPattern method executeRelativePathPattern.

/**
 * Execute the match pattern step relative to another step.
 *
 * @param xctxt The XPath runtime context.
 * NEEDSDOC @param prevStep
 *
 * @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST},
 *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE},
 *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD},
 *         {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or
 *         {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
 *
 * @throws javax.xml.transform.TransformerException
 */
public XObject executeRelativePathPattern(XPathContext xctxt, StepPattern prevStep) throws javax.xml.transform.TransformerException {
    XObject score = NodeTest.SCORE_NONE;
    int context = xctxt.getCurrentNode();
    DTM dtm = xctxt.getDTM(context);
    if (null != dtm) {
        int predContext = xctxt.getCurrentNode();
        DTMAxisTraverser traverser;
        int axis = m_axis;
        boolean needToTraverseAttrs = WalkerFactory.isDownwardAxisOfMany(axis);
        boolean iterRootIsAttr = (dtm.getNodeType(xctxt.getIteratorRoot()) == DTM.ATTRIBUTE_NODE);
        if ((Axis.PRECEDING == axis) && iterRootIsAttr) {
            axis = Axis.PRECEDINGANDANCESTOR;
        }
        traverser = dtm.getAxisTraverser(axis);
        for (int relative = traverser.first(context); DTM.NULL != relative; relative = traverser.next(context, relative)) {
            try {
                xctxt.pushCurrentNode(relative);
                score = execute(xctxt);
                if (score != NodeTest.SCORE_NONE) {
                    // predContext, relative);
                    if (executePredicates(xctxt, dtm, context))
                        return score;
                    score = NodeTest.SCORE_NONE;
                }
                if (needToTraverseAttrs && iterRootIsAttr && (DTM.ELEMENT_NODE == dtm.getNodeType(relative))) {
                    int xaxis = Axis.ATTRIBUTE;
                    for (int i = 0; i < 2; i++) {
                        DTMAxisTraverser atraverser = dtm.getAxisTraverser(xaxis);
                        for (int arelative = atraverser.first(relative); DTM.NULL != arelative; arelative = atraverser.next(relative, arelative)) {
                            try {
                                xctxt.pushCurrentNode(arelative);
                                score = execute(xctxt);
                                if (score != NodeTest.SCORE_NONE) {
                                    if (score != NodeTest.SCORE_NONE)
                                        return score;
                                }
                            } finally {
                                xctxt.popCurrentNode();
                            }
                        }
                        xaxis = Axis.NAMESPACE;
                    }
                }
            } finally {
                xctxt.popCurrentNode();
            }
        }
    }
    return score;
}

Example 37 with XObject

use of org.apache.xpath.objects.XObject in project j2objc by google.

the class JAXPExtensionsProvider method extFunction.

/**
 * Execute the extension function.
 */
public Object extFunction(String ns, String funcName, Vector argVec, Object methodKey) throws javax.xml.transform.TransformerException {
    try {
        if (funcName == null) {
            String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, new Object[] { "Function Name" });
            throw new NullPointerException(fmsg);
        }
        // Find the XPathFunction corresponding to namespace and funcName
        javax.xml.namespace.QName myQName = new QName(ns, funcName);
        // throw XPathFunctionException
        if (extensionInvocationDisabled) {
            String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_EXTENSION_FUNCTION_CANNOT_BE_INVOKED, new Object[] { myQName.toString() });
            throw new XPathFunctionException(fmsg);
        }
        // Assuming user is passing all the needed parameters ( including
        // default values )
        int arity = argVec.size();
        javax.xml.xpath.XPathFunction xpathFunction = resolver.resolveFunction(myQName, arity);
        // not using methodKey
        ArrayList argList = new ArrayList(arity);
        for (int i = 0; i < arity; i++) {
            Object argument = argVec.elementAt(i);
            // Explicitly getting NodeList by using nodelist()
            if (argument instanceof XNodeSet) {
                argList.add(i, ((XNodeSet) argument).nodelist());
            } else if (argument instanceof XObject) {
                Object passedArgument = ((XObject) argument).object();
                argList.add(i, passedArgument);
            } else {
                argList.add(i, argument);
            }
        }
        return (xpathFunction.evaluate(argList));
    } catch (XPathFunctionException xfe) {
        // further execution by throwing WrappedRuntimeException
        throw new org.apache.xml.utils.WrappedRuntimeException(xfe);
    } catch (Exception e) {
        throw new javax.xml.transform.TransformerException(e);
    }
}

Example 38 with XObject

use of org.apache.xpath.objects.XObject in project j2objc by google.

the class JAXPExtensionsProvider method extFunction.

/**
 * Execute the extension function.
 */
public Object extFunction(FuncExtFunction extFunction, Vector argVec) throws javax.xml.transform.TransformerException {
    try {
        String namespace = extFunction.getNamespace();
        String functionName = extFunction.getFunctionName();
        int arity = extFunction.getArgCount();
        javax.xml.namespace.QName myQName = new javax.xml.namespace.QName(namespace, functionName);
        // throw XPathFunctionException
        if (extensionInvocationDisabled) {
            String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_EXTENSION_FUNCTION_CANNOT_BE_INVOKED, new Object[] { myQName.toString() });
            throw new XPathFunctionException(fmsg);
        }
        XPathFunction xpathFunction = resolver.resolveFunction(myQName, arity);
        ArrayList argList = new ArrayList(arity);
        for (int i = 0; i < arity; i++) {
            Object argument = argVec.elementAt(i);
            // Explicitly getting NodeList by using nodelist()
            if (argument instanceof XNodeSet) {
                argList.add(i, ((XNodeSet) argument).nodelist());
            } else if (argument instanceof XObject) {
                Object passedArgument = ((XObject) argument).object();
                argList.add(i, passedArgument);
            } else {
                argList.add(i, argument);
            }
        }
        return (xpathFunction.evaluate(argList));
    } catch (XPathFunctionException xfe) {
        // further execution by throwing WrappedRuntimeException
        throw new org.apache.xml.utils.WrappedRuntimeException(xfe);
    } catch (Exception e) {
        throw new javax.xml.transform.TransformerException(e);
    }
}

Example 39 with XObject

use of org.apache.xpath.objects.XObject in project j2objc by google.

the class XPathImpl method eval.

private XObject eval(String expression, Object contextItem) throws javax.xml.transform.TransformerException {
    org.apache.xpath.XPath xpath = new org.apache.xpath.XPath(expression, null, prefixResolver, org.apache.xpath.XPath.SELECT);
    org.apache.xpath.XPathContext xpathSupport = null;
    // expressions.
    if (functionResolver != null) {
        JAXPExtensionsProvider jep = new JAXPExtensionsProvider(functionResolver, featureSecureProcessing);
        xpathSupport = new org.apache.xpath.XPathContext(jep, false);
    } else {
        xpathSupport = new org.apache.xpath.XPathContext(false);
    }
    XObject xobj = null;
    xpathSupport.setVarStack(new JAXPVariableStack(variableResolver));
    // If item is null, then we will create a a Dummy contextNode
    if (contextItem instanceof Node) {
        xobj = xpath.execute(xpathSupport, (Node) contextItem, prefixResolver);
    } else {
        xobj = xpath.execute(xpathSupport, DTM.NULL, prefixResolver);
    }
    return xobj;
}

Example 40 with XObject

use of org.apache.xpath.objects.XObject in project j2objc by google.

the class XPathImpl method evaluate.

/**
 * <p>Evaluate an XPath expression in the context of the specified <code>InputSource</code>
 * and return the result as the specified type.</p>
 *
 * <p>This method builds a data model for the {@link InputSource} and calls
 * {@link #evaluate(String expression, Object item, QName returnType)} on the resulting document object.</p>
 *
 * <p>See "Evaluation of XPath Expressions" section of JAXP 1.3 spec
 * for context item evaluation,
 * variable, function and QName resolution and return type conversion.</p>
 *
 * <p>If <code>returnType</code> is not one of the types defined in {@link XPathConstants},
 * then an <code>IllegalArgumentException</code> is thrown.</p>
 *
 * <p>If <code>expression</code>, <code>source</code> or <code>returnType</code> is <code>null</code>,
 * then a <code>NullPointerException</code> is thrown.</p>
 *
 * @param expression The XPath expression.
 * @param source The input source of the document to evaluate over.
 * @param returnType The desired return type.
 *
 * @return The <code>Object</code> that encapsulates the result of evaluating the expression.
 *
 * @throws XPathExpressionException If expression cannot be evaluated.
 * @throws IllegalArgumentException If <code>returnType</code> is not one of the types defined in {@link XPathConstants}.
 * @throws NullPointerException If <code>expression</code>, <code>source</code> or <code>returnType</code>
 *   is <code>null</code>.
 */
public Object evaluate(String expression, InputSource source, QName returnType) throws XPathExpressionException {
    // Checking validity of different parameters
    if (source == null) {
        String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, new Object[] { "source" });
        throw new NullPointerException(fmsg);
    }
    if (expression == null) {
        String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, new Object[] { "XPath expression" });
        throw new NullPointerException(fmsg);
    }
    if (returnType == null) {
        String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, new Object[] { "returnType" });
        throw new NullPointerException(fmsg);
    }
    // returnType need to be defined in XPathConstants
    if (!isSupported(returnType)) {
        String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_UNSUPPORTED_RETURN_TYPE, new Object[] { returnType.toString() });
        throw new IllegalArgumentException(fmsg);
    }
    try {
        Document document = getParser().parse(source);
        XObject resultObject = eval(expression, document);
        return getResultAsType(resultObject, returnType);
    } catch (SAXException e) {
        throw new XPathExpressionException(e);
    } catch (IOException e) {
        throw new XPathExpressionException(e);
    } catch (javax.xml.transform.TransformerException te) {
        Throwable nestedException = te.getException();
        if (nestedException instanceof javax.xml.xpath.XPathFunctionException) {
            throw (javax.xml.xpath.XPathFunctionException) nestedException;
        } else {
            throw new XPathExpressionException(te);
        }
    }
}