Examples of javax.xml.xpath.XPathFunctionResolver

javax.xml.xpath.XPathFunctionResolver
3.org/TR/xmldsig-core/">XML-Signature Syntax and Processing which extend the function library of XPath 1.0 in the same namespace. This is a consequence of the design of the resolver.

If you wish to implement additional built-in functions, you will have to extend the underlying implementation directly.
@author Norman Walsh @author Jeff Suttor @version $Revision: 226183 $, $Date: 2005-04-08 06:39:14 -0400 (Fri, 08 Apr 2005) $ @see XML Path Language (XPath) Version 1.0, Core Function Library @since 1.5

            }
        }
    }


    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);
                }

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        public Object resolveVariable(QName qname) {
          return findVariable(qname, ctx);
        }
      });


      xpath.setXPathFunctionResolver(new XPathFunctionResolver() {


        public XPathFunction resolveFunction(QName qname, int arity) {
          Object obj = findVariable(qname, ctx);
          return makeXPathFunction(qname, obj, arity);
        }

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            LOG.info("Creating new XPath expression in pool. Namespaces on XPath expression: {}", getNamespaceContext().toString());
        }
        xPath.setNamespaceContext(getNamespaceContext());
        xPath.setXPathVariableResolver(getVariableResolver());


        XPathFunctionResolver parentResolver = getFunctionResolver();
        if (parentResolver == null) {
            parentResolver = xPath.getXPathFunctionResolver();
        }
        xPath.setXPathFunctionResolver(createDefaultFunctionResolver(parentResolver));
        return xPath.compile(text);

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            }
        }
    }


    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);
                }

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            LOG.info("Creating new XPath expression in pool. Namespaces on XPath expression: {}", getNamespaceContext().toString());
        }
        xPath.setNamespaceContext(getNamespaceContext());
        xPath.setXPathVariableResolver(getVariableResolver());


        XPathFunctionResolver parentResolver = getFunctionResolver();
        if (parentResolver == null) {
            parentResolver = xPath.getXPathFunctionResolver();
        }
        xPath.setXPathFunctionResolver(createDefaultFunctionResolver(parentResolver));
        return xPath.compile(text);

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            }
        }
    }


    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);
                }

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        XPath xPath = getXPathFactory().newXPath();


        xPath.setNamespaceContext(getNamespaceContext());
        xPath.setXPathVariableResolver(getVariableResolver());


        XPathFunctionResolver parentResolver = getFunctionResolver();
        if (parentResolver == null) {
            parentResolver = xPath.getXPathFunctionResolver();
        }
        xPath.setXPathFunctionResolver(createDefaultFunctionResolver(parentResolver));
        return xPath.compile(text);

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            }
        }
    }


    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);
                }

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            LOG.info("Creating new XPath expression in pool. Namespaces on XPath expression: {}", getNamespaceContext().toString());
        }
        xPath.setNamespaceContext(getNamespaceContext());
        xPath.setXPathVariableResolver(getVariableResolver());


        XPathFunctionResolver parentResolver = getFunctionResolver();
        if (parentResolver == null) {
            parentResolver = xPath.getXPathFunctionResolver();
        }
        xPath.setXPathFunctionResolver(createDefaultFunctionResolver(parentResolver));
        return xPath.compile(text);

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            }
        }
    }


    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);
                }

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