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

Example 16 with XPath

use of javax.xml.xpath.XPath in project nutz by nutzam.

the class Xmls method getEles.

/**
     * 从一个 XML 元素开始，根据一条 XPath 获取一组元素
     * 
     * @param ele
     *            XML 元素
     * @param xpath
     *            要获取的元素的 XPath
     * @return 元素列表
     */
public static List<Element> getEles(Element ele, String xpath) {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xp = factory.newXPath();
    try {
        XPathExpression expression = xp.compile(xpath);
        NodeList nodes = (NodeList) expression.evaluate(ele, XPathConstants.NODESET);
        List<Element> list = new ArrayList<Element>();
        int len = nodes.getLength();
        for (int i = 0; i < len; i++) {
            Node node = nodes.item(i);
            if (node instanceof Element) {
                list.add((Element) node);
            }
        }
        return list;
    } catch (XPathExpressionException e) {
        throw Lang.wrapThrow(e);
    }
}

Example 17 with XPath

use of javax.xml.xpath.XPath in project nutz by nutzam.

the class Xmls method getEle.

/**
     * 从一个 XML 元素开始，根据一条 XPath 获取一个元素
     * 
     * @param ele
     *            XML 元素
     * @param xpath
     *            要获取的元素的 XPath
     * @return 元素，null 表示不存在
     */
public static Element getEle(Element ele, String xpath) {
    XPathFactory factory = XPathFactory.newInstance();
    XPath xp = factory.newXPath();
    try {
        XPathExpression expression = xp.compile(xpath);
        return (Element) expression.evaluate(ele, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        throw Lang.wrapThrow(e);
    }
}

Example 18 with XPath

use of javax.xml.xpath.XPath in project openhab1-addons by openhab.

the class IhcResourceInteractionService method getValue.

private String getValue(Node n, String expr) throws XPathExpressionException {
    XPath xpath = XPathFactory.newInstance().newXPath();
    xpath.setNamespaceContext(new NamespaceContext() {

        @Override
        public String getNamespaceURI(String prefix) {
            if (prefix == null) {
                throw new NullPointerException("Null prefix");
            } else if ("SOAP-ENV".equals(prefix)) {
                return "http://schemas.xmlsoap.org/soap/envelope/";
            } else if ("ns1".equals(prefix)) {
                return "utcs";
            }
            // else if ("ns2".equals(prefix)) return "utcs.values";
            return "utcs.values";
        // return null;
        }

        @Override
        public String getPrefix(String uri) {
            return null;
        }

        @Override
        @SuppressWarnings("rawtypes")
        public Iterator getPrefixes(String uri) {
            throw new UnsupportedOperationException();
        }
    });
    XPathExpression pathExpr = xpath.compile(expr);
    return (String) pathExpr.evaluate(n, XPathConstants.STRING);
}

Example 19 with XPath

use of javax.xml.xpath.XPath in project openhab1-addons by openhab.

the class WSBaseDataType method parseValue.

public static String parseValue(String xml, String xpathExpression) throws IhcExecption {
    InputStream is;
    try {
        is = new ByteArrayInputStream(xml.getBytes("UTF8"));
    } catch (UnsupportedEncodingException e) {
        throw new IhcExecption(e);
    }
    XPath xpath = XPathFactory.newInstance().newXPath();
    InputSource inputSource = new InputSource(is);
    xpath.setNamespaceContext(new NamespaceContext() {

        @Override
        public String getNamespaceURI(String prefix) {
            if (prefix == null) {
                throw new NullPointerException("Null prefix");
            } else if ("SOAP-ENV".equals(prefix)) {
                return "http://schemas.xmlsoap.org/soap/envelope/";
            } else if ("ns1".equals(prefix)) {
                return "utcs";
            } else if ("ns2".equals(prefix)) {
                return "utcs.values";
            }
            return null;
        }

        @Override
        public String getPrefix(String uri) {
            return null;
        }

        @Override
        @SuppressWarnings("rawtypes")
        public Iterator getPrefixes(String uri) {
            throw new UnsupportedOperationException();
        }
    });
    try {
        return (String) xpath.evaluate(xpathExpression, inputSource, XPathConstants.STRING);
    } catch (XPathExpressionException e) {
        throw new IhcExecption(e);
    }
}

Example 20 with XPath

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

the class JaxenXPathTestSuite method contextToTestSuite.

/**
     * Populates the test suite with tests from the given XML context element.
     */
private static void contextToTestSuite(TestSuite suite, String url, InputSource inputSource, Element element) {
    /*
         * Each context element has this structure:
         *
         * <context select="...">
         *   <test .../>
         *   <test .../>
         *   <test .../>
         *   <valueOf .../>
         *   <valueOf .../>
         *   <valueOf .../>
         * </context>
         */
    String select = element.getAttribute("select");
    Context context = new Context(inputSource, url, select);
    XPath xpath = XPathFactory.newInstance().newXPath();
    xpath.setXPathVariableResolver(new ElementVariableResolver(element));
    for (Element test : elementsOf(element.getChildNodes())) {
        if (test.getTagName().equals("test")) {
            suite.addTest(createFromTest(xpath, context, test));
        } else if (test.getTagName().equals("valueOf")) {
            suite.addTest(createFromValueOf(xpath, context, test));
        } else {
            throw new UnsupportedOperationException("Unsupported test: " + context);
        }
    }
}