Examples of javax.xml.xpath.XPath.compile()

javax.xml.xpath.XPath.compile()

Compile an XPath expression for later evaluation.

If expression contains any {@link XPathFunction}s, they must be available via the {@link XPathFunctionResolver}. An {@link XPathExpressionException} will be thrown if the XPathFunctioncannot be resovled with the XPathFunctionResolver.

If expression is null, a NullPointerException is thrown.
@param expression The XPath expression. @return Compiled XPath expression. @throws XPathExpressionException If expression cannot be compiled. @throws NullPointerException If expression is null.

          XPath xPath = getXPathFactory().newXPath();
          if(null != xmlNamespaceResolver) {
            JAXPNamespaceContext namespaceContext = new JAXPNamespaceContext(xmlNamespaceResolver);
            xPath.setNamespaceContext(namespaceContext);
          }
          XPathExpression xPathExpression = xPath.compile(xPathString);
          return (NodeList) xPathExpression.evaluate(contextNode, XPathConstants.NODESET);
      } catch(XPathException e) {
            throw XMLPlatformException.xmlPlatformInvalidXPath(e);        
      }
    }

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          XPath xPath = getXPathFactory().newXPath();
          if(null != xmlNamespaceResolver) {
            JAXPNamespaceContext namespaceContext = new JAXPNamespaceContext(xmlNamespaceResolver);
            xPath.setNamespaceContext(namespaceContext);
          }
          XPathExpression xPathExpression = xPath.compile(xPathString);
          return (Node) xPathExpression.evaluate(contextNode, XPathConstants.NODE);
      } catch(XPathException e) {
            throw XMLPlatformException.xmlPlatformInvalidXPath(e);        
      }
    }

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      String exprValue = "//servlet-mapping[servlet-name='" + servletName + "']/url-pattern";
      XPath xpath = XPathFactory.newInstance().newXPath();
      XPathExpression expr;
      try
      {
         expr = xpath.compile(exprValue);
      }
      catch (XPathExpressionException e)
      {
         throw new ServletException(e);
      }

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                String s = r.getAttributeValue(null, "schemaLocation");
                if (StringUtils.isEmpty(s)) {
                    Document d = StaxUtils.read(r);
                    XPath p = XPathFactory.newInstance().newXPath();
                    p.setNamespaceContext(new W3CNamespaceContext(d.getDocumentElement()));
                    XPathExpression xpe = p.compile(d.getDocumentElement().getAttribute("node"));
                    for (XmlSchema schema : schemas.getXmlSchemas()) {
                        if (XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(schema.getTargetNamespace())) {
                            continue;
                        }
                        Object src = getSchemaNode(schema, schemas);

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                String s = r.getAttributeValue(null, "schemaLocation");
                if (StringUtils.isEmpty(s)) {
                    Document d = StaxUtils.read(r);
                    XPath p = XPathUtils.getFactory().newXPath();
                    p.setNamespaceContext(new W3CNamespaceContext(d.getDocumentElement()));
                    XPathExpression xpe = p.compile(d.getDocumentElement().getAttribute("node"));
                    for (XmlSchema schema : schemas.getXmlSchemas()) {
                        if (XMLConstants.W3C_XML_SCHEMA_NS_URI.equals(schema.getTargetNamespace())) {
                            continue;
                        }
                        Object src = getSchemaNode(schema, schemas);

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        final NamespaceContext nsContext = this.getNamespaceContext();
        xpath.setNamespaceContext(nsContext);
        
        // Signature Algorithm
        final XPathExpression sigAlgoExpr = 
            xpath.compile("/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo" 
                              + "/ds:SignatureMethod/@Algorithm");
        
        final String sigMethod =  (String) sigAlgoExpr.evaluate(signedDoc, XPathConstants.STRING);
        assertEquals(expectedSignatureMethod, sigMethod);

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        final String sigMethod =  (String) sigAlgoExpr.evaluate(signedDoc, XPathConstants.STRING);
        assertEquals(expectedSignatureMethod, sigMethod);
        
        // Digest Method Algorithm
        final XPathExpression digestAlgoExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo/ds:Reference/ds:DigestMethod");
        
        final NodeList digestMethodNodes = 
            (NodeList) digestAlgoExpr.evaluate(signedDoc, XPathConstants.NODESET);

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            assertEquals(expectedDigestAlgorithm, digestAlgorithm);
        }
        
        // Canonicalization Algorithm
        final XPathExpression canonAlgoExpr =
            xpath.compile("/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo" 
                              + "/ds:CanonicalizationMethod/@Algorithm");
        final String canonMethod =  (String) canonAlgoExpr.evaluate(signedDoc, XPathConstants.STRING);
        assertEquals(expectedCanonAlgorithm, canonMethod);
    }

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        XPath xpath = factory.newXPath();
        final NamespaceContext nsContext = this.getNamespaceContext();
        xpath.setNamespaceContext(nsContext);
        
        // Find the SecurityTokenReference for the assertion
        final XPathExpression strExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/wsse:SecurityTokenReference/wsse:KeyIdentifier");
        
        final NodeList strKeyIdNodes = 
            (NodeList) strExpr.evaluate(signedDoc, XPathConstants.NODESET);

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            }
        }
        assertNotNull("SecurityTokenReference for " + assertionId + " not found in security header.", strId);
        
        // Verify STR is included in the signature references
        final XPathExpression sigRefExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo/ds:Reference");
        
        final NodeList sigReferenceNodes = 
            (NodeList) sigRefExpr.evaluate(signedDoc, XPathConstants.NODESET);

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