Example usage for javax.xml.xpath XPathFunctionResolver XPathFunctionResolver

Introduction

In this page you can find the example usage for javax.xml.xpath XPathFunctionResolver XPathFunctionResolver.

Prototype

XPathFunctionResolver

Source Link

Usage

From source file:org.apache.camel.builder.xml.XPathBuilder.java

protected XPathFunctionResolver createDefaultFunctionResolver(final XPathFunctionResolver parent) {
    return new XPathFunctionResolver() {
        public XPathFunction resolveFunction(QName qName, int argumentCount) {
            XPathFunction answer = null;
            if (parent != null) {
                answer = parent.resolveFunction(qName, argumentCount);
            }/*from   w  w  w.  j  a  v a  2s.  c om*/
            if (answer == null) {
                if (isMatchingNamespaceOrEmptyNamespace(qName.getNamespaceURI(), IN_NAMESPACE)
                        || isMatchingNamespaceOrEmptyNamespace(qName.getNamespaceURI(), DEFAULT_NAMESPACE)) {
                    String localPart = qName.getLocalPart();
                    if (localPart.equals("body") && argumentCount == 0) {
                        return getBodyFunction();
                    }
                    if (localPart.equals("header") && argumentCount == 1) {
                        return getHeaderFunction();
                    }
                }
                if (isMatchingNamespaceOrEmptyNamespace(qName.getNamespaceURI(), OUT_NAMESPACE)) {
                    String localPart = qName.getLocalPart();
                    if (localPart.equals("body") && argumentCount == 0) {
                        return getOutBodyFunction();
                    }
                    if (localPart.equals("header") && argumentCount == 1) {
                        return getOutHeaderFunction();
                    }
                }
                if (isMatchingNamespaceOrEmptyNamespace(qName.getNamespaceURI(), FUNCTION_NAMESPACE)) {
                    String localPart = qName.getLocalPart();
                    if (localPart.equals("properties") && argumentCount == 1) {
                        return getPropertiesFunction();
                    }
                    if (localPart.equals("simple") && argumentCount == 1) {
                        return getSimpleFunction();
                    }
                }
            }
            return answer;
        }
    };
}

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From source file:org.apache.hise.utils.TaskXmlUtils.java

/**
 * Creates {@link XPath} aware of request namespaces.
 *//*from   w  ww.j av a  2 s .  c o m*/
synchronized XPath createXPathInstance() {

    XPath xpath = this.xPathFactory.newXPath();

    xpath.setNamespaceContext(this.namespaceContext);
    xpath.setXPathFunctionResolver(new XPathFunctionResolver() {

        public XPathFunction resolveFunction(QName functionName, int arity) {

            if (functionName == null) {
                throw new NullPointerException("The function name cannot be null.");
            }

            if (functionName.equals(new QName("http://www.example.org/WS-HT", "getInput", "htd"))) {

                return new GetXPathFunction(input);
            }

            if (functionName.equals(new QName("http://www.example.org/WS-HT", "getOutput", "htd"))) {

                return new GetXPathFunction(output);
            }

            return null;
        }
    });

    return xpath;
}

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