Example usage for org.w3c.dom Element hasChildNodes

List of usage examples for org.w3c.dom Element hasChildNodes

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Introduction

In this page you can find the example usage for org.w3c.dom Element hasChildNodes.

Prototype

public boolean hasChildNodes();

Source Link

Document

Returns whether this node has any children.

Usage

From source file:org.shirdrn.tinyframework.core.conf.Context.java

private void loadResource(Properties properties, Object name, boolean quiet) {
    try {// w  w  w .  jav  a  2s .com
        DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
        //ignore all comments inside the xml file
        docBuilderFactory.setIgnoringComments(true);

        //allow includes in the xml file
        docBuilderFactory.setNamespaceAware(true);
        try {
            docBuilderFactory.setXIncludeAware(true);
        } catch (UnsupportedOperationException e) {
            LOG.error("Failed to set setXIncludeAware(true) for parser " + docBuilderFactory + ":" + e, e);
        }
        DocumentBuilder builder = docBuilderFactory.newDocumentBuilder();
        Document doc = null;
        Element root = null;

        if (name instanceof URL) { // an URL resource
            URL url = (URL) name;
            if (url != null) {
                if (!quiet) {
                    LOG.info("parsing " + url);
                }
                doc = builder.parse(url.toString());
            }
        } else if (name instanceof String) { // a CLASSPATH resource
            URL url = getResource((String) name);
            if (url != null) {
                if (!quiet) {
                    LOG.info("parsing " + url);
                }
                doc = builder.parse(url.toString());
            }
        } else if (name instanceof InputStream) {
            try {
                doc = builder.parse((InputStream) name);
            } finally {
                ((InputStream) name).close();
            }
        } else if (name instanceof Element) {
            root = (Element) name;
        }

        if (doc == null && root == null) {
            if (quiet)
                return;
            throw new RuntimeException(name + " not found");
        }

        if (root == null) {
            root = doc.getDocumentElement();
        }
        if (!"configuration".equals(root.getTagName()))
            LOG.fatal("bad conf file: top-level element not <configuration>");
        NodeList props = root.getChildNodes();
        for (int i = 0; i < props.getLength(); i++) {
            Node propNode = props.item(i);
            if (!(propNode instanceof Element))
                continue;
            Element prop = (Element) propNode;
            if ("configuration".equals(prop.getTagName())) {
                loadResource(properties, prop, quiet);
                continue;
            }
            if (!"property".equals(prop.getTagName()))
                LOG.warn("bad conf file: element not <property>");
            NodeList fields = prop.getChildNodes();
            String attr = null;
            String value = null;
            boolean finalParameter = false;
            for (int j = 0; j < fields.getLength(); j++) {
                Node fieldNode = fields.item(j);
                if (!(fieldNode instanceof Element))
                    continue;
                Element field = (Element) fieldNode;
                if ("name".equals(field.getTagName()) && field.hasChildNodes())
                    attr = ((Text) field.getFirstChild()).getData().trim();
                if ("value".equals(field.getTagName()) && field.hasChildNodes())
                    value = ((Text) field.getFirstChild()).getData();
                if ("final".equals(field.getTagName()) && field.hasChildNodes())
                    finalParameter = "true".equals(((Text) field.getFirstChild()).getData());
            }

            // Ignore this parameter if it has already been marked as 'final'
            if (attr != null && value != null) {
                if (!finalParameters.contains(attr)) {
                    properties.setProperty(attr, value);
                    if (finalParameter)
                        finalParameters.add(attr);
                } else {
                    LOG.warn(name + ":a attempt to override final parameter: " + attr + ";  Ignoring.");
                }
            }
        }

    } catch (IOException e) {
        LOG.fatal("error parsing conf file: " + e);
        throw new RuntimeException(e);
    } catch (DOMException e) {
        LOG.fatal("error parsing conf file: " + e);
        throw new RuntimeException(e);
    } catch (SAXException e) {
        LOG.fatal("error parsing conf file: " + e);
        throw new RuntimeException(e);
    } catch (ParserConfigurationException e) {
        LOG.fatal("error parsing conf file: " + e);
        throw new RuntimeException(e);
    }
}

From source file:org.wso2.carbon.bpel.b4p.extension.BPEL4PeopleExtensionOperation.java

/**
 * Called when the response for the above service is received
 *
 * @param mexId MessageExchange id/*from  w w w.j  a v a  2 s  . c o  m*/
 */
@Override
public void onRequestReceived(String mexId) throws FaultException {
    if (log.isDebugEnabled()) {
        log.debug("People Activity Response received : mexId " + mexId);
    }

    Element notificationMessageEle = extensionContext.getInternalInstance().getMyRequest(mexId);

    if ("".equals(outputVarName) || outputVarName == null) {
        // if output variable is null or empty, these is no way to process the response from the task as we do
        // not have
        // a variable from bpel file to assign the values to. Hence what what we can do is to return a fault and
        // exit.
        log.error(
                "Output variable not specified correctly for the remoteTask activity.Hence the error condition."
                        + "Please verify and correct your BPEL process remoteTask");

        extensionContext.completeWithFault(cid,
                new FaultException(BPEL4PeopleConstants.B4P_FAULT, BPEL4PeopleConstants.NON_RECOVERABLE_ERROR));
    } else {
        Node part = extensionContext.getPartData(notificationMessageEle, outputVarName);

        if (messageTraceLog.isTraceEnabled()) {
            messageTraceLog.trace("B4P Response Message: " + DOMUtils.domToString(notificationMessageEle));
            messageTraceLog.trace("B4P Response Part: " + DOMUtils.domToString(part));

        }

        if (CoordinationConfiguration.getInstance().isHumantaskCoordinationEnabled()
                && notificationMessageEle.hasChildNodes()) {
            String taskID = "";
            Element correlationHeader = DOMUtils.findChildByName(notificationMessageEle,
                    new QName(BPEL4PeopleConstants.B4P_NAMESPACE, BPEL4PeopleConstants.B4P_CORRELATION_HEADER),
                    true);
            if (correlationHeader != null) {
                taskID = correlationHeader.getAttributeNS(BPEL4PeopleConstants.B4P_NAMESPACE,
                        BPEL4PeopleConstants.B4P_CORRELATION_HEADER_ATTRIBUTE);
                try {
                    deleteCoordinationTaskData(taskID);
                } catch (Exception e) {
                    log.error("Error occurred while cleaning coordination data for task id " + taskID, e);
                }
            }

            //Checking for fault
            Element fault = DOMUtils.findChildByName(notificationMessageEle,
                    new QName(WSConstants.WS_HT_COORDINATION_PROTOCOL_FAULT));
            if (fault != null) {
                if (fault.hasAttribute("headerPart")) {
                    if (log.isDebugEnabled()) {
                        log.debug(
                                "Throwing Fault to People Activity Scope since received Fault Protocol Message "
                                        + "for task" + taskID + ".");
                    }
                    extensionContext.completeWithFault(cid, new FaultException(BPEL4PeopleConstants.B4P_FAULT,
                            BPEL4PeopleConstants.NON_RECOVERABLE_ERROR));
                    ;
                }
            }
            //Checking for Skip
            Element skipped = DOMUtils.findChildByName(notificationMessageEle,
                    new QName(WSConstants.WS_HT_COORDINATION_PROTOCOL_SKIPPED));
            if (skipped != null) {
                if (skipped.hasAttribute("headerPart")) {
                    if (log.isDebugEnabled()) {
                        log.debug("Skipping People Activity since received Skipped Protocol Message for task "
                                + taskID + ".");
                    }
                    //Set extension as complete, since task is skipped. No value write to output variable.
                    extensionContext.complete(cid);
                    return;
                }
            }
        }
        extensionContext.writeVariable(outputVarName, notificationMessageEle);
        extensionContext.complete(cid);
    }
}

From source file:org.wso2.carbon.core.bootup.validator.util.ConfigValidationXMLProcessor.java

/**
 * Initializes an instance of the ConfigurationValidator class with the
 * fully/*from  www.ja v  a  2  s.co  m*/
 * qualified class name given in the xml element.
 * 
 * @param elem
 * @return ConfigurationValidator object
 * @throws ClassNotFoundException
 * @throws IllegalAccessException
 * @throws InstantiationException
 */
private ConfigurationValidator initConfigValidator(Element elem)
        throws InstantiationException, IllegalAccessException, ClassNotFoundException {

    HashMap<String, String> validationParams = new HashMap<String, String>();
    String className = elem.getAttribute(CLASS_ATTRIBUTE);
    // loading the ConfigurationValidator class
    ConfigurationValidator validator = (ConfigurationValidator) Class.forName(className).newInstance();
    NodeList nl = elem.getElementsByTagName(PARAMETER_TAG);
    if (nl != null && nl.getLength() > 0) {
        for (int i = 0; i < nl.getLength(); i++) {
            Element el = (Element) nl.item(i);
            String paramName = el.getAttribute(ID_ATTRIBUTE);
            if (el.hasChildNodes()) {
                String val = el.getFirstChild().getNodeValue();
                if (paramName != null && val != null) {
                    validationParams.put(paramName, val);
                }
            }
        }
    }
    // setting the recommededConfigurations for this configValidator
    validator.setRecommendedConfigurations(validationParams);
    return validator;
}

From source file:org.wso2.carbon.humantask.core.engine.util.CommonTaskUtil.java

/**
 * Returns the element with the given name.
 *
 * @param inputMessage : The input message.
 * @param partName     : The part name for which the data element is required.
 * @return : The matching element./*from  w  ww . j  a va2  s .  com*/
 */
public static Element getMessagePart(MessageDAO inputMessage, String partName) {
    Element node = inputMessage.getBodyData();
    if (node.hasChildNodes()) {
        Element matchingElement = null;

        if (node.getElementsByTagName(partName).getLength() > 0) {
            matchingElement = (Element) node.getElementsByTagName(partName).item(0);
        }

        if (matchingElement != null && matchingElement.getFirstChild() != null) {
            return (Element) matchingElement.getFirstChild();
        }

        return matchingElement;
    } else {
        throw new HumanTaskRuntimeException("The input message does not have any child elements");
    }

}

From source file:org.xwiki.filter.xml.internal.parameter.XStreamParameterManager.java

@Override
public Object unSerialize(Type type, Element rootElement) {
    if (type != null && !rootElement.hasChildNodes()) {
        Object value = XMLUtils.emptyValue(ReflectionUtils.getTypeClass(type));
        if (value != null) {
            return value;
        }/*from ww  w .j ava2s . co  m*/
    }

    DataHolder dataHolder = new MapBackedDataHolder();

    dataHolder.put(DDEFAULTTYPE_NAME, type);

    return this.xstream.unmarshal(new DomReader(rootElement), null, dataHolder);
}

From source file:org.xwiki.rendering.xdomxmlcurrent.internal.parameter.XStreamParameterManager.java

@Override
public Object unSerialize(Type type, Element rootElement) {
    if (type != null && !rootElement.hasChildNodes()) {
        Object value = XDOMXMLCurrentUtils.defaultValue(ReflectionUtils.getTypeClass(type));
        if (value != null) {
            return value;
        }/*from   w  w w.  j  a v  a 2s  . c o  m*/
    }

    DataHolder dataHolder = new MapBackedDataHolder();

    dataHolder.put("type", type);

    return this.xstream.unmarshal(new DomReader(rootElement), null, dataHolder);
}

From source file:org.xwiki.rendering.xml.internal.parameter.XStreamParameterManager.java

@Override
public Object unSerialize(Type type, Element rootElement) {
    if (type != null && !rootElement.hasChildNodes()) {
        Object value = XMLUtils.defaultValue(ReflectionUtils.getTypeClass(type));
        if (value != null) {
            return value;
        }//from   w  w w.j  a v  a  2 s . c  o m
    }

    DataHolder dataHolder = new MapBackedDataHolder();

    dataHolder.put(TYPE_NAME, type);

    return this.xstream.unmarshal(new DomReader(rootElement), null, dataHolder);
}

From source file:uk.co.anthonycampbell.java.mp4reader.util.Util.java

/**
 * Utility method to parse iTunes meta XML.
 * //ww  w .ja  va2  s. c  o m
 * @param xml - the XML to parse.
 */
public static Map<String, List<String>> parseITunesMeta(final String xml) {
    // Initialise result
    final Map<String, List<String>> iTunesMap = new HashMap<>();

    // Validate
    if (StringUtils.isNotEmpty(xml)) {
        try {
            final InputSource inputSource = new InputSource();
            inputSource.setCharacterStream(new StringReader(xml));

            final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            final DocumentBuilder builder = factory.newDocumentBuilder();
            final Document document = builder.parse(inputSource);

            final NodeList plists = document.getElementsByTagName("plist");
            for (int i = 0; i < plists.getLength(); ++i) {
                final Element plist = (Element) plists.item(i);

                if (plist != null && plist.hasChildNodes()) {
                    final NodeList nodes = plist.getChildNodes();

                    if (nodes != null) {
                        for (int j = 0; j < nodes.getLength(); ++j) {
                            final Node node = nodes.item(j);

                            if (node != null && node.getNodeType() == Node.ELEMENT_NODE
                                    && "dict".equals(node.getNodeName())) {
                                iTunesMap.putAll(parseDictionary(node));
                            }
                        }
                    }
                }
            }
        } catch (ParserConfigurationException pce) {
        } catch (SAXException saxe) {
        } catch (IOException ioe) {
        }

    } else {
        throw new IllegalArgumentException("Provided XML is invalid! (xml=" + xml + ")");
    }

    return iTunesMap;
}

From source file:util.XmlWriter.java

public void write(Element element, int tabs) throws IOException {
    if (!isNewLine)
        write(endl);/*from w ww  . j  a v  a  2 s .  co m*/
    if (!element.hasChildNodes()) {
        writeTabs(tabs);
        write("<" + element.getTagName() + writeAttributes(element) + "/>");
    } else {
        writeTabs(tabs);
        write("<" + element.getTagName() + writeAttributes(element) + ">");
        write(element.getChildNodes(), tabs + 1);
        if (isNewLine)
            writeTabs(tabs);
        write("</" + element.getTagName() + ">");
    }
    write(endl);
}