Examples with XPathFunction javax.xml.xpath.XPathFunction used on opensource projects

Example 1 with XPathFunction

use of javax.xml.xpath.XPathFunction in project camel by apache.

the class XPathBuilder method createSimpleFunction.

private XPathFunction createSimpleFunction() {
    return new XPathFunction() {

        @SuppressWarnings("rawtypes")
        public Object evaluate(List list) throws XPathFunctionException {
            if (!list.isEmpty()) {
                Object value = list.get(0);
                if (value != null) {
                    String text = exchange.get().getContext().getTypeConverter().convertTo(String.class, value);
                    Language simple = exchange.get().getContext().resolveLanguage("simple");
                    Expression exp = simple.createExpression(text);
                    Object answer = exp.evaluate(exchange.get(), Object.class);
                    return answer;
                }
            }
            return null;
        }
    };
}

Example 2 with XPathFunction

use of javax.xml.xpath.XPathFunction in project robovm by robovm.

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 3 with XPathFunction

use of javax.xml.xpath.XPathFunction in project robovm by robovm.

the class JAXPExtensionsProvider method functionAvailable.

/**
     * Is the extension function available?
     */
public boolean functionAvailable(String ns, String funcName) 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);
        javax.xml.xpath.XPathFunction xpathFunction = resolver.resolveFunction(myQName, 0);
        if (xpathFunction == null) {
            return false;
        }
        return true;
    } catch (Exception e) {
        return false;
    }
}

Example 4 with XPathFunction

use of javax.xml.xpath.XPathFunction in project robovm by robovm.

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 5 with XPathFunction

use of javax.xml.xpath.XPathFunction in project jbpm by kiegroup.

the class XPATHReturnValueEvaluator method evaluate.

public Object evaluate(final ProcessContext context) throws Exception {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpathEvaluator = factory.newXPath();
    xpathEvaluator.setXPathFunctionResolver(new XPathFunctionResolver() {

        public XPathFunction resolveFunction(QName functionName, int arity) {
            String localName = functionName.getLocalPart();
            if ("getVariable".equals(localName)) {
                return new GetVariableData();
            } else {
                throw new IllegalArgumentException("Unknown BPMN function: " + functionName);
            }
        }

        class GetVariableData implements XPathFunction {

            public Object evaluate(List args) throws XPathFunctionException {
                String varname = (String) args.get(0);
                return context.getVariable(varname);
            }
        }
    });
    xpathEvaluator.setXPathVariableResolver(new XPathVariableResolver() {

        public Object resolveVariable(QName variableName) {
            return context.getVariable(variableName.getLocalPart());
        }
    });
    xpathEvaluator.setNamespaceContext(new NamespaceContext() {

        private static final String DROOLS_NAMESPACE_URI = "http://www.jboss.org/drools";

        private String[] prefixes = { "drools", "bpmn2" };

        @Override
        public Iterator getPrefixes(String namespaceURI) {
            return Arrays.asList(prefixes).iterator();
        }

        @Override
        public String getPrefix(String namespaceURI) {
            if (DROOLS_NAMESPACE_URI.equalsIgnoreCase(namespaceURI)) {
                return "bpmn2";
            }
            return null;
        }

        @Override
        public String getNamespaceURI(String prefix) {
            if ("bpmn2".equalsIgnoreCase(prefix)) {
                return DROOLS_NAMESPACE_URI;
            }
            return null;
        }
    });
    DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
    return xpathEvaluator.evaluate(this.expression, builder.newDocument(), XPathConstants.BOOLEAN);
}