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.

                throw new IllegalStateException("Unsupported dialect: " + contentFilter.getDialect());
            }
            try {
                XPathFactory xpfactory = XPathFactory.newInstance();
                XPath xpath = xpfactory.newXPath();
                XPathExpression exp = xpath.compile(contentFilter.getContent().get(0).toString());
                Boolean ret = (Boolean) exp.evaluate(content, XPathConstants.BOOLEAN);
                return ret.booleanValue();
            } catch (XPathExpressionException e) {
                log.warn("Could not filter notification", e);
            }

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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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        XPath path = xpathFactory.newXPath(); 
        path.setNamespaceContext(reader.getNamespaceContext());
        try {
            if (appliesTo != null) {
                policySet.setAppliesToXPathExpression(path.compile(appliesTo));
            }
            if (alwaysAppliesTo != null) {
                policySet.setAlwaysAppliesToXPathExpression(path.compile(alwaysAppliesTo));
            }
        } catch (XPathExpressionException e) {

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        try {
            if (appliesTo != null) {
                policySet.setAppliesToXPathExpression(path.compile(appliesTo));
            }
            if (alwaysAppliesTo != null) {
                policySet.setAlwaysAppliesToXPathExpression(path.compile(alwaysAppliesTo));
            }
        } catch (XPathExpressionException e) {
            throw new ContributionReadException(e);
        }

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                                    }
                                }
                                XPath xpath = xPathFactory.newXPath();
                                xpath.setNamespaceContext(reader.getNamespaceContext());
                                try {
                                    componentProperty.setSourceXPathExpression(xpath.compile(source));
                                } catch (XPathExpressionException e) {
                                    throw new ContributionReadException(e);
                                }
                            }
                            componentProperty.setFile(getString(reader, FILE));

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            String rateTable = entry.getDescription().getValue();


            Document doc = builder.parse(new ByteArrayInputStream(rateTable.getBytes()));
            Node node = doc.getDocumentElement();
            XPath path = XPathFactory.newInstance().newXPath();
            XPathExpression exp = path.compile("/TABLE/TR[TD[1]='" + currency.toUpperCase() + "']/TD[2]");
            Node rateNode = (Node)exp.evaluate(node, XPathConstants.NODE);
            double rate = Double.valueOf(rateNode.getTextContent().trim());
            System.out.println("Exchange rate: USD 1.0=" + currency + " " + rate);
            return rate;
        } catch (Exception e) {

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