Examples with XPathExpression org.jdom2.xpath.XPathExpression used on opensource projects

Example 1 with XPathExpression

use of org.jdom2.xpath.XPathExpression in project jspwiki by apache.

the class XmlUtil method parse.

/**
 * Parses the given stream and returns the requested nodes. If there's an error accessing or parsing the stream, an
 * empty list is returned.
 *
 * @param xmlStream stream to parse.
 * @param requestedNodes requestd nodes on the xml stream.
 * @return the requested nodes of the XML stream.
 */
public static List<Element> parse(InputStream xmlStream, String requestedNodes) {
    if (xmlStream != null && StringUtils.isNotEmpty(requestedNodes)) {
        SAXBuilder builder = new SAXBuilder();
        try {
            Document doc = builder.build(xmlStream);
            XPathFactory xpfac = XPathFactory.instance();
            XPathExpression<Element> xp = xpfac.compile(requestedNodes, Filters.element());
            return xp.evaluate(doc);
        } catch (IOException ioe) {
            log.error("Couldn't load all " + xmlStream + " resources", ioe);
        } catch (JDOMException jdome) {
            log.error("error parsing " + xmlStream + " resources", jdome);
        }
    }
    return Collections.<Element>emptyList();
}

Example 2 with XPathExpression

use of org.jdom2.xpath.XPathExpression in project pwm by pwm-project.

the class StoredConfigurationImpl method readConfigProperty.

@Override
public String readConfigProperty(final ConfigurationProperty propertyName) {
    final XPathExpression xp = XPathBuilder.xpathForConfigProperty(propertyName);
    final Element propertyElement = (Element) xp.evaluateFirst(document);
    return propertyElement == null ? null : propertyElement.getText();
}

Example 3 with XPathExpression

use of org.jdom2.xpath.XPathExpression in project pwm by pwm-project.

the class StoredConfigurationImpl method writeConfigProperty.

@Override
public void writeConfigProperty(final ConfigurationProperty propertyName, final String value) {
    domModifyLock.writeLock().lock();
    try {
        final XPathExpression xp = XPathBuilder.xpathForConfigProperty(propertyName);
        final List<Element> propertyElements = xp.evaluate(document);
        for (final Element propertyElement : propertyElements) {
            propertyElement.detach();
        }
        final Element propertyElement = new Element(XML_ELEMENT_PROPERTY);
        propertyElement.setAttribute(new Attribute(XML_ATTRIBUTE_KEY, propertyName.getKey()));
        propertyElement.setContent(new Text(value));
        if (null == XPathBuilder.xpathForConfigProperties().evaluateFirst(document)) {
            final Element configProperties = new Element(XML_ELEMENT_PROPERTIES);
            configProperties.setAttribute(new Attribute(XML_ATTRIBUTE_TYPE, XML_ATTRIBUTE_VALUE_CONFIG));
            document.getRootElement().addContent(configProperties);
        }
        final XPathExpression xp2 = XPathBuilder.xpathForConfigProperties();
        final Element propertiesElement = (Element) xp2.evaluateFirst(document);
        propertyElement.setAttribute(XML_ATTRIBUTE_MODIFY_TIME, JavaHelper.toIsoDate(Instant.now()));
        propertiesElement.setAttribute(XML_ATTRIBUTE_MODIFY_TIME, JavaHelper.toIsoDate(Instant.now()));
        propertiesElement.addContent(propertyElement);
    } finally {
        domModifyLock.writeLock().unlock();
    }
}

Example 4 with XPathExpression

use of org.jdom2.xpath.XPathExpression in project pwm by pwm-project.

the class StoredConfigurationImpl method readTemplateValue.

private static PwmSettingTemplate readTemplateValue(final Document document, final PwmSetting pwmSetting) {
    final XPathExpression xp = XPathBuilder.xpathForSetting(pwmSetting, null);
    final Element settingElement = (Element) xp.evaluateFirst(document);
    if (settingElement != null) {
        try {
            final String strValue = (String) ValueFactory.fromXmlValues(pwmSetting, settingElement, null).toNativeObject();
            return JavaHelper.readEnumFromString(PwmSettingTemplate.class, null, strValue);
        } catch (IllegalStateException e) {
            LOGGER.error("error reading template", e);
        }
    }
    return null;
}

Example 5 with XPathExpression

use of org.jdom2.xpath.XPathExpression in project pwm by pwm-project.

the class StoredConfigurationImpl method readSetting.

public StoredValue readSetting(final PwmSetting setting, final String profileID) {
    if (profileID == null && setting.getCategory().hasProfiles()) {
        final IllegalArgumentException e = new IllegalArgumentException("reading of setting " + setting.getKey() + " requires a non-null profileID");
        LOGGER.error("error", e);
        throw e;
    }
    if (profileID != null && !setting.getCategory().hasProfiles()) {
        throw new IllegalStateException("cannot read setting key " + setting.getKey() + " with non-null profileID");
    }
    domModifyLock.readLock().lock();
    try {
        final XPathExpression xp = XPathBuilder.xpathForSetting(setting, profileID);
        final Element settingElement = (Element) xp.evaluateFirst(document);
        if (settingElement == null) {
            return defaultValue(setting, getTemplateSet());
        }
        if (settingElement.getChild(XML_ELEMENT_DEFAULT) != null) {
            return defaultValue(setting, getTemplateSet());
        }
        try {
            return ValueFactory.fromXmlValues(setting, settingElement, getKey());
        } catch (PwmException e) {
            final String errorMsg = "unexpected error reading setting '" + setting.getKey() + "' profile '" + profileID + "', error: " + e.getMessage();
            throw new IllegalStateException(errorMsg);
        }
    } finally {
        domModifyLock.readLock().unlock();
    }
}