Example usage for org.w3c.dom Element getFirstChild

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

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Introduction

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

Prototype

public Node getFirstChild();

Source Link

Document

The first child of this node.

Usage

From source file:Main.java

/**
 * Checks whether the expected XML element is contained in the actual
 * element. I.e., every attribute of the expected element must occur in the
 * actual element, with the same value, and all child nodes in the expected
 * element must occur in the actual element; if multiple child nodes with
 * the same name are found in the expected element, the first found
 * identifying attribute in the expected child element is used to identify
 * the child in the actual element./*from  w  ww.  jav a 2 s.  co m*/
 * 
 * @param expected
 * @param actual
 * @return
 */
public static void assertContains(Element expected, Element actual, String messagePrefix,
        String... identifyingAttributes) {
    if (!expected.getTagName().equals(actual.getTagName())) {
        throw new AssertionError(messagePrefix + "\nExpected tagname differs from actual tagname (expected '"
                + printNodeOnly(expected) + "', found " + printNodeOnly(actual) + ")");
    }

    // Compare attributes
    NamedNodeMap expectedAttributes = expected.getAttributes();
    for (int i = expectedAttributes.getLength() - 1; i >= 0; i--) {
        String expectedAttributeName = expectedAttributes.item(i).getNodeName();
        String expectedAttributeValue = expectedAttributes.item(i).getNodeValue();

        String actualValue = actual.getAttribute(expectedAttributeName);
        if (actualValue == null || actualValue.isEmpty()) {
            throw new AssertionError(messagePrefix + "\nThe attribute '" + expectedAttributeName
                    + "' with value '" + expectedAttributeValue + "' was not found in the result "
                    + printNodeOnly(actual));
        }
        if (!expectedAttributeValue.equals(actualValue)) {
            throw new AssertionError(messagePrefix + "\nThe attribute '" + expectedAttributeName
                    + "' has value '" + actualValue + "' instead of '" + expectedAttributeValue
                    + "' in the result " + printNodeOnly(actual));
        }
    }

    // Compare child elements
    Node child = expected.getFirstChild();
    while (child != null) {
        if (child instanceof Element) {
            assertContainsChildElement((Element) child, actual, messagePrefix, identifyingAttributes);
        }
        child = child.getNextSibling();
    }
}

From source file:org.weloveastrid.rmilk.api.Invoker.java

public Element invoke(boolean repeat, Param... params) throws ServiceException {
    long timeSinceLastInvocation = System.currentTimeMillis() - lastInvocation;
    if (timeSinceLastInvocation < INVOCATION_INTERVAL) {
        // In order not to invoke the RTM service too often
        try {/*from   ww w .ja va 2  s. co  m*/
            Thread.sleep(INVOCATION_INTERVAL - timeSinceLastInvocation);
        } catch (InterruptedException e) {
            return null;
        }
    }

    // We compute the URI
    final StringBuffer requestUri = computeRequestUri(params);
    HttpResponse response = null;

    final HttpGet request = new HttpGet("http://" //$NON-NLS-1$
            + ServiceImpl.SERVER_HOST_NAME + requestUri.toString());
    final String methodUri = request.getRequestLine().getUri();

    Element result;
    try {
        Log.i(TAG, "Executing the method:" + methodUri); //$NON-NLS-1$
        response = httpClient.execute(request);
        lastInvocation = System.currentTimeMillis();

        final int statusCode = response.getStatusLine().getStatusCode();
        if (statusCode != HttpStatus.SC_OK) {
            Log.e(TAG, "Method failed: " + response.getStatusLine()); //$NON-NLS-1$

            // Tim: HTTP error. Let's wait a little bit
            if (!repeat) {
                try {
                    Thread.sleep(1500);
                } catch (InterruptedException e) {
                    // ignore
                }
                response.getEntity().consumeContent();
                return invoke(true, params);
            }

            throw new ServiceInternalException("method failed: " + response.getStatusLine());
        }

        final Document responseDoc = builder.parse(response.getEntity().getContent());
        final Element wrapperElt = responseDoc.getDocumentElement();
        if (!wrapperElt.getNodeName().equals("rsp")) {
            throw new ServiceInternalException(
                    "unexpected response returned by RTM service: " + wrapperElt.getNodeName());
        } else {
            String stat = wrapperElt.getAttribute("stat");
            if (stat.equals("fail")) {
                Node errElt = wrapperElt.getFirstChild();
                while (errElt != null
                        && (errElt.getNodeType() != Node.ELEMENT_NODE || !errElt.getNodeName().equals("err"))) {
                    errElt = errElt.getNextSibling();
                }
                if (errElt == null) {
                    throw new ServiceInternalException(
                            "unexpected response returned by RTM service: " + wrapperElt.getNodeValue());
                } else {
                    if (SERVICE_UNAVAILABLE_CODE.equals(((Element) errElt).getAttribute("code")) && !repeat) {
                        try {
                            Thread.sleep(1500);
                        } catch (InterruptedException e) {
                            // ignore
                        }
                        return invoke(true, params);
                    }

                    throw new ServiceException(Integer.parseInt(((Element) errElt).getAttribute("code")),
                            ((Element) errElt).getAttribute("msg"));
                }
            } else {
                Node dataElt = wrapperElt.getFirstChild();
                while (dataElt != null && (dataElt.getNodeType() != Node.ELEMENT_NODE
                        || dataElt.getNodeName().equals("transaction") == true)) {
                    try {
                        Node nextSibling = dataElt.getNextSibling();
                        if (nextSibling == null) {
                            break;
                        } else {
                            dataElt = nextSibling;
                        }
                    } catch (IndexOutOfBoundsException exception) {
                        // Some implementation may throw this exception,
                        // instead of returning a null sibling
                        break;
                    }
                }
                if (dataElt == null) {
                    throw new ServiceInternalException(
                            "unexpected response returned by RTM service: " + wrapperElt.getNodeValue());
                } else {
                    result = (Element) dataElt;
                }
            }
        }
    } catch (IOException e) {
        throw new ServiceInternalException("Error making connection: " + e.getMessage(), e);
    } catch (SAXException e) {
        // repeat call if possible.
        if (!repeat)
            return invoke(true, params);
        else
            throw new ServiceInternalException("Error parsing response. " + "Please try sync again!", e);
    } finally {
        httpClient.getConnectionManager().closeExpiredConnections();
    }

    return result;
}

From source file:org.weloveastrid.hive.api.Invoker.java

public Element invoke(boolean repeat, Param... params) throws ServiceException {
    long timeSinceLastInvocation = System.currentTimeMillis() - lastInvocation;
    if (timeSinceLastInvocation < INVOCATION_INTERVAL) {
        // In order not to invoke the Hiveminder service too often
        try {//from w ww  .  j ava 2s  .  com
            Thread.sleep(INVOCATION_INTERVAL - timeSinceLastInvocation);
        } catch (InterruptedException e) {
            return null;
        }
    }

    // We compute the URI
    final StringBuffer requestUri = computeRequestUri(params);
    HttpResponse response = null;

    final HttpGet request = new HttpGet("http://" //$NON-NLS-1$
            + ServiceImpl.SERVER_HOST_NAME + requestUri.toString());
    final String methodUri = request.getRequestLine().getUri();

    Element result;
    try {
        Log.i(TAG, "Executing the method:" + methodUri); //$NON-NLS-1$
        response = httpClient.execute(request);
        lastInvocation = System.currentTimeMillis();

        final int statusCode = response.getStatusLine().getStatusCode();
        if (statusCode != HttpStatus.SC_OK) {
            Log.e(TAG, "Method failed: " + response.getStatusLine()); //$NON-NLS-1$

            // Tim: HTTP error. Let's wait a little bit
            if (!repeat) {
                try {
                    Thread.sleep(1500);
                } catch (InterruptedException e) {
                    // ignore
                }
                response.getEntity().consumeContent();
                return invoke(true, params);
            }

            throw new ServiceInternalException("method failed: " + response.getStatusLine());
        }

        final Document responseDoc = builder.parse(response.getEntity().getContent());
        final Element wrapperElt = responseDoc.getDocumentElement();
        if (!wrapperElt.getNodeName().equals("rsp")) {
            throw new ServiceInternalException(
                    "unexpected response returned by Hiveminder service: " + wrapperElt.getNodeName());
        } else {
            String stat = wrapperElt.getAttribute("stat");
            if (stat.equals("fail")) {
                Node errElt = wrapperElt.getFirstChild();
                while (errElt != null
                        && (errElt.getNodeType() != Node.ELEMENT_NODE || !errElt.getNodeName().equals("err"))) {
                    errElt = errElt.getNextSibling();
                }
                if (errElt == null) {
                    throw new ServiceInternalException(
                            "unexpected response returned by Hiveminder service: " + wrapperElt.getNodeValue());
                } else {
                    if (SERVICE_UNAVAILABLE_CODE.equals(((Element) errElt).getAttribute("code")) && !repeat) {
                        try {
                            Thread.sleep(1500);
                        } catch (InterruptedException e) {
                            // ignore
                        }
                        return invoke(true, params);
                    }

                    throw new ServiceException(Integer.parseInt(((Element) errElt).getAttribute("code")),
                            ((Element) errElt).getAttribute("msg"));
                }
            } else {
                Node dataElt = wrapperElt.getFirstChild();
                while (dataElt != null && (dataElt.getNodeType() != Node.ELEMENT_NODE
                        || dataElt.getNodeName().equals("transaction") == true)) {
                    try {
                        Node nextSibling = dataElt.getNextSibling();
                        if (nextSibling == null) {
                            break;
                        } else {
                            dataElt = nextSibling;
                        }
                    } catch (IndexOutOfBoundsException exception) {
                        // Some implementation may throw this exception,
                        // instead of returning a null sibling
                        break;
                    }
                }
                if (dataElt == null) {
                    throw new ServiceInternalException(
                            "unexpected response returned by Hiveminder service: " + wrapperElt.getNodeValue());
                } else {
                    result = (Element) dataElt;
                }
            }
        }
    } catch (IOException e) {
        throw new ServiceInternalException("Error making connection: " + e.getMessage(), e);
    } catch (SAXException e) {
        // repeat call if possible.
        if (!repeat)
            return invoke(true, params);
        else
            throw new ServiceInternalException("Error parsing response. " + "Please try sync again!", e);
    } finally {
        httpClient.getConnectionManager().closeExpiredConnections();
    }

    return result;
}

From source file:edu.lternet.pasta.client.JournalCitationsClient.java

public String citationsTableHTML() throws Exception {
    String html = "";

    if (this.uid != null && !this.uid.equals("public")) {
        StringBuilder sb = new StringBuilder("");
        String xmlString = listPrincipalOwnerCitations(this.uid);

        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        try {/*www  . jav a  2s  . c o  m*/
            DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
            InputStream inputStream = IOUtils.toInputStream(xmlString, "UTF-8");
            Document document = documentBuilder.parse(inputStream);
            Element documentElement = document.getDocumentElement();
            NodeList citationsNodeList = documentElement.getElementsByTagName("journalCitation");
            int nJournalCitations = citationsNodeList.getLength();

            for (int i = 0; i < nJournalCitations; i++) {
                Node journalCitationNode = citationsNodeList.item(i);
                NodeList journalCitationChildren = journalCitationNode.getChildNodes();
                String journalCitationId = "";
                String packageId = "";
                String articleDoi = "";
                String articleUrl = "";
                String articleTitle = "";
                String journalTitle = "";

                for (int j = 0; j < journalCitationChildren.getLength(); j++) {
                    Node childNode = journalCitationChildren.item(j);
                    if (childNode instanceof Element) {
                        Element subscriptionElement = (Element) childNode;

                        if (subscriptionElement.getTagName().equals("journalCitationId")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                journalCitationId = text.getData().trim();
                            }
                        } else if (subscriptionElement.getTagName().equals("packageId")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                packageId = text.getData().trim();
                            }
                        } else if (subscriptionElement.getTagName().equals("articleDoi")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                articleDoi = text.getData().trim();
                            }
                        } else if (subscriptionElement.getTagName().equals("articleUrl")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                articleUrl = text.getData().trim();
                            }
                        } else if (subscriptionElement.getTagName().equals("articleTitle")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                articleTitle = text.getData().trim();
                            }
                        } else if (subscriptionElement.getTagName().equals("journalTitle")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                journalTitle = text.getData().trim();
                            }
                        }
                    }
                }

                sb.append("<tr>\n");

                sb.append("<td class='nis' align='center'>");
                sb.append(journalCitationId);
                sb.append("</td>\n");

                sb.append("<td class='nis' align='center'>");
                sb.append(packageId);
                sb.append("</td>\n");

                sb.append("<td class='nis'>");
                sb.append(articleDoi);
                sb.append("</td>\n");

                sb.append("<td class='nis'>");
                sb.append(articleUrl);
                sb.append("</td>\n");

                sb.append("<td class='nis'>");
                sb.append(articleTitle);
                sb.append("</td>\n");

                sb.append("<td class='nis'>");
                sb.append(journalTitle);
                sb.append("</td>\n");

                sb.append("</tr>\n");
            }

            html = sb.toString();
        } catch (Exception e) {
            logger.error("Exception:\n" + e.getMessage());
            e.printStackTrace();
            throw new PastaEventException(e.getMessage());
        }
    }

    return html;
}

From source file:XMLDocumentWriter.java

/**
 * Output the specified DOM Node object, printing it using the specified
 * indentation string//w w w .  j av a  2 s  . co  m
 */
public void write(Node node, String indent) {
    // The output depends on the type of the node
    switch (node.getNodeType()) {
    case Node.DOCUMENT_NODE: { // If its a Document node
        Document doc = (Document) node;
        out.println(indent + "<?xml version='1.0'?>"); // Output header
        Node child = doc.getFirstChild(); // Get the first node
        while (child != null) { // Loop 'till no more nodes
            write(child, indent); // Output node
            child = child.getNextSibling(); // Get next node
        }
        break;
    }
    case Node.DOCUMENT_TYPE_NODE: { // It is a <!DOCTYPE> tag
        DocumentType doctype = (DocumentType) node;
        // Note that the DOM Level 1 does not give us information about
        // the the public or system ids of the doctype, so we can't output
        // a complete <!DOCTYPE> tag here. We can do better with Level 2.
        out.println("<!DOCTYPE " + doctype.getName() + ">");
        break;
    }
    case Node.ELEMENT_NODE: { // Most nodes are Elements
        Element elt = (Element) node;
        out.print(indent + "<" + elt.getTagName()); // Begin start tag
        NamedNodeMap attrs = elt.getAttributes(); // Get attributes
        for (int i = 0; i < attrs.getLength(); i++) { // Loop through them
            Node a = attrs.item(i);
            out.print(" " + a.getNodeName() + "='" + // Print attr. name
                    fixup(a.getNodeValue()) + "'"); // Print attr. value
        }
        out.println(">"); // Finish start tag

        String newindent = indent + "    "; // Increase indent
        Node child = elt.getFirstChild(); // Get child
        while (child != null) { // Loop
            write(child, newindent); // Output child
            child = child.getNextSibling(); // Get next child
        }

        out.println(indent + "</" + // Output end tag
                elt.getTagName() + ">");
        break;
    }
    case Node.TEXT_NODE: { // Plain text node
        Text textNode = (Text) node;
        String text = textNode.getData().trim(); // Strip off space
        if ((text != null) && text.length() > 0) // If non-empty
            out.println(indent + fixup(text)); // print text
        break;
    }
    case Node.PROCESSING_INSTRUCTION_NODE: { // Handle PI nodes
        ProcessingInstruction pi = (ProcessingInstruction) node;
        out.println(indent + "<?" + pi.getTarget() + " " + pi.getData() + "?>");
        break;
    }
    case Node.ENTITY_REFERENCE_NODE: { // Handle entities
        out.println(indent + "&" + node.getNodeName() + ";");
        break;
    }
    case Node.CDATA_SECTION_NODE: { // Output CDATA sections
        CDATASection cdata = (CDATASection) node;
        // Careful! Don't put a CDATA section in the program itself!
        out.println(indent + "<" + "![CDATA[" + cdata.getData() + "]]" + ">");
        break;
    }
    case Node.COMMENT_NODE: { // Comments
        Comment c = (Comment) node;
        out.println(indent + "<!--" + c.getData() + "-->");
        break;
    }
    default: // Hopefully, this won't happen too much!
        System.err.println("Ignoring node: " + node.getClass().getName());
        break;
    }
}

From source file:com.amalto.workbench.actions.XSDNewParticleFromParticleAction.java

public Map<String, List<String>> cloneXSDAnnotation(XSDAnnotation oldAnn) {
    Map<String, List<String>> infor = new HashMap<String, List<String>>();
    try {/*from  ww  w.j  a v a 2  s.  c  om*/
        if (oldAnn != null) {
            for (int i = 0; i < oldAnn.getApplicationInformation().size(); i++) {
                Element oldElem = oldAnn.getApplicationInformation().get(i);
                String type = oldElem.getAttributes().getNamedItem("source").getNodeValue();//$NON-NLS-1$
                // X_Write,X_Hide,X_Workflow
                if (type.equals("X_Write") || type.equals("X_Hide") || type.equals("X_Workflow")) {//$NON-NLS-1$//$NON-NLS-2$//$NON-NLS-3$
                    if (!infor.containsKey(type)) {
                        List<String> typeList = new ArrayList<String>();
                        typeList.add(oldElem.getFirstChild().getNodeValue());
                        infor.put(type, typeList);
                    } else {
                        (infor.get(type)).add(oldElem.getFirstChild().getNodeValue());
                    }
                }
            }
        }

    } catch (Exception e) {
        log.error(e.getMessage(), e);
        MessageDialog.openError(this.page.getSite().getShell(), Messages._Error,
                Messages.bind(Messages._ErrorPasteEntity, e.getLocalizedMessage()));
    }
    return infor;
}

From source file:edu.lternet.pasta.client.EventSubscriptionClient.java

public String subscriptionOptionsHTML() throws PastaEventException {
    String html = "";

    if (this.uid != null && !this.uid.equals("public")) {
        StringBuilder sb = new StringBuilder("");
        String xmlString = readByFilter("");

        DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
        try {/*from w w  w.ja va2s  .c o  m*/
            DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
            InputStream inputStream = IOUtils.toInputStream(xmlString, "UTF-8");
            Document document = documentBuilder.parse(inputStream);
            Element documentElement = document.getDocumentElement();
            NodeList subscriptionList = documentElement.getElementsByTagName("subscription");
            int nSubscriptions = subscriptionList.getLength();

            for (int i = 0; i < nSubscriptions; i++) {
                Node subscriptionNode = subscriptionList.item(i);
                NodeList subscriptionChildren = subscriptionNode.getChildNodes();
                String subscriptionId = "";
                for (int j = 0; j < subscriptionChildren.getLength(); j++) {
                    Node childNode = subscriptionChildren.item(j);
                    if (childNode instanceof Element) {
                        Element subscriptionElement = (Element) childNode;
                        if (subscriptionElement.getTagName().equals("id")) {
                            Text text = (Text) subscriptionElement.getFirstChild();
                            if (text != null) {
                                subscriptionId = text.getData().trim();
                            }
                        }
                    }
                }

                sb.append(String.format("<option value='%s'>%s</option>\n", subscriptionId, subscriptionId));
            }

            html = sb.toString();
        } catch (Exception e) {
            logger.error("Exception:\n" + e.getMessage());
            e.printStackTrace();
            throw new PastaEventException(e.getMessage());
        }
    }

    return html;
}

From source file:com.icesoft.faces.context.DOMResponseWriter.java

private Element fixHead() {
    Element html = document.getDocumentElement();
    Element head = document.createElement("head");
    html.insertBefore(head, html.getFirstChild());

    return head;//  w  w  w  .  j av  a  2s.  c o m
}

From source file:com.verisign.epp.codec.gen.EPPUtil.java

/**
 * Decode a <code>List</code> of <code>String</code>'s by XML namespace and
 * tag name, from an XML Element. The children elements of
 * <code>aElement</code> will be searched for the specified <code>aNS</code>
 * namespace URI and the specified <code>aTagName</code>. Each XML element
 * found will be decoded and added to the returned <code>List</code>. Empty
 * child elements, will result in empty string ("") return <code>List</code>
 * elements./*from   w  ww  .  ja  va2  s . c  om*/
 * 
 * @param aElement
 *            XML Element to scan. For example, the element could be
 *            &ltdomain:update&gt
 * @param aNS
 *            XML namespace of the elements. For example, for domain element
 *            this is "urn:iana:xmlns:domain".
 * @param aTagName
 *            Tag name of the element including an optional namespace
 *            prefix. For example, the tag name for the domain name servers
 *            is "domain:server".
 * @return <code>List</code> of <code>String</code> elements representing
 *         the text nodes of the found XML elements.
 * @exception EPPDecodeException
 *                Error decoding <code>aElement</code>.
 */
public static List decodeList(Element aElement, String aNS, String aTagName) throws EPPDecodeException {
    List retVal = new ArrayList();

    Vector theChildren = EPPUtil.getElementsByTagNameNS(aElement, aNS, aTagName);

    for (int i = 0; i < theChildren.size(); i++) {
        Element currChild = (Element) theChildren.elementAt(i);

        Text currVal = (Text) currChild.getFirstChild();

        // Element has text?
        if (currVal != null) {
            retVal.add(currVal.getNodeValue());
        } else { // No text in element.
            retVal.add("");
        }
    }

    return retVal;
}

From source file:com.verisign.epp.codec.gen.EPPUtil.java

/**
 * Decode a <code>Vector</code> of <code>String</code>'s by XML namespace
 * and tag name, from an XML Element. The children elements of
 * <code>aElement</code> will be searched for the specified <code>aNS</code>
 * namespace URI and the specified <code>aTagName</code>. Each XML element
 * found will be decoded and added to the returned <code>Vector</code>.
 * Empty child elements, will result in empty string ("") return
 * <code>Vector</code> elements.
 * // www  .  j  a  v a2  s.  c  om
 * @param aElement
 *            XML Element to scan. For example, the element could be
 *            &ltdomain:update&gt
 * @param aNS
 *            XML namespace of the elements. For example, for domain element
 *            this is "urn:iana:xmlns:domain".
 * @param aTagName
 *            Tag name of the element including an optional namespace
 *            prefix. For example, the tag name for the domain name servers
 *            is "domain:server".
 * @return <code>Vector</code> of <code>String</code> elements representing
 *         the text nodes of the found XML elements.
 * @exception EPPDecodeException
 *                Error decoding <code>aElement</code>.
 */
public static <X> Vector<X> decodeVector(Element aElement, String aNS, String aTagName)
        throws EPPDecodeException {
    Vector retVal = new Vector();

    Vector theChildren = EPPUtil.getElementsByTagNameNS(aElement, aNS, aTagName);

    for (int i = 0; i < theChildren.size(); i++) {
        Element currChild = (Element) theChildren.elementAt(i);

        Text currVal = (Text) currChild.getFirstChild();

        // Element has text?
        if (currVal != null) {
            retVal.addElement(currVal.getNodeValue());
        } else { // No text in element.
            retVal.addElement("");
        }
    }

    return retVal;
}