Examples of org.apache.lenya.xml.NamespaceHelper

org.apache.lenya.xml.NamespaceHelper
A NamespaceHelper object simplifies the creation of elements in a certain namespace. All elements are owned by a document that is passed to the {@link #NamespaceHelper(Document,String,String)} constructor or createdusing the {@link #NamespaceHelper(String,String,String)} constructor.

        if (loading || !changed) {
            return;
        }
        try {
            Node repoNode = getRepositoryNode();
            NamespaceHelper helper = new NamespaceHelper(NAMESPACE, "", "site");


            int revision = getRevision(repoNode) + 1;
            helper.getDocument().getDocumentElement().setAttribute("revision",
                    Integer.toString(revision));


            saveNodes(getRoot(), helper, helper.getDocument().getDocumentElement());
            helper.save(repoNode.getOutputStream());
        } catch (RuntimeException e) {
            throw e;
        } catch (Exception e) {
            throw new RepositoryException(e);
        }

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            throws TransformerConfigurationException, TransformerException, IOException,
            ParserConfigurationException {


        assert (metaDataFile.getParentFile().exists());


        NamespaceHelper helper = new NamespaceHelper("http://purl.org/dc/elements/1.1/", "dc",
                "metadata");


        Element root = helper.getDocument().getDocumentElement();


        Iterator iter = dublinCoreParams.keySet().iterator();


        while (iter.hasNext()) {
            String tagName = (String) iter.next();
            String tagValue = (String) dublinCoreParams.get(tagName);
            root.appendChild(helper.createElement(tagName, tagValue));
        }


        DocumentHelper.writeDocument(helper.getDocument(), metaDataFile);
    }

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        try {
            File file = getHistoryFile();
            file.getParentFile().mkdirs();
            file.createNewFile();


            NamespaceHelper helper = new NamespaceHelper(Workflow.NAMESPACE,
                    Workflow.DEFAULT_PREFIX, HISTORY_ELEMENT);


            Element historyElement = helper.getDocument().getDocumentElement();
            historyElement.setAttribute(WORKFLOW_ATTRIBUTE, workflowId);


            Element initialVersionElement = createInitialVersionElement(helper, situation,
                    workflowId);
            historyElement.appendChild(initialVersionElement);


            DocumentHelper.writeDocument(helper.getDocument(), file);
        } catch (Exception e) {
            throw new WorkflowException(e);
        }
    }

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     * Returns the namespace helper for the history file.
     * @return A namespace helper.
     * @throws WorkflowException It the helper could not be obtained.
     */
    protected NamespaceHelper getNamespaceHelper() throws WorkflowException {
        NamespaceHelper helper;
        try {
            Document document = DocumentHelper.readDocument(getHistoryFile());
            helper = new NamespaceHelper(Workflow.NAMESPACE, Workflow.DEFAULT_PREFIX, document);
        } catch (Exception e) {
            throw new WorkflowException(e);
        }
        return helper;
    }

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                        "The workflow history has not been initialized: The file ["
                                + getHistoryFile() + "] is missing.");
            }


            WorkflowInstanceImpl instance = createInstance();
            NamespaceHelper helper = getNamespaceHelper();


            String workflowId = getWorkflowId(helper);
            if (null == workflowId) {
                throw new WorkflowException("No workflow attribute set in history document!");
            }

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            throws WorkflowException {
        try {
            org.w3c.dom.Document xmlDocument = DocumentHelper.readDocument(getHistoryFile());
            Element root = xmlDocument.getDocumentElement();


            NamespaceHelper helper = new NamespaceHelper(Workflow.NAMESPACE,
                    Workflow.DEFAULT_PREFIX, xmlDocument);


            Element versionElement = createVersionElement(helper, (StateImpl) instance
                    .getCurrentState(), situation, event);

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     * @throws WorkflowException when something went wrong.
     */
    public Version[] getVersions() throws WorkflowException {
        List versions = new ArrayList();


        NamespaceHelper helper = getNamespaceHelper();
        Element documentElement = helper.getDocument().getDocumentElement();
        Element[] versionElements = getNamespaceHelper().getChildren(documentElement,
                VERSION_ELEMENT);


        for (int i = 0; i < versionElements.length; i++) {
            Version version = restoreVersion(helper, versionElements[i]);

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            String[] prefixes = { DC_PREFIX, DCTERMS_PREFIX };
            String[][] arrays = { ELEMENTS, TERMS };
            Map[] maps = { elements, terms };


            for (int type = 0; type < 2; type++) {
                NamespaceHelper helper = new NamespaceHelper(namespaces[type], prefixes[type], doc);
                String[] elementNames = arrays[type];
                for (int i = 0; i < elementNames.length; i++) {
                    Element[] children = helper.getChildren(metaElement, elementNames[i]);
                    String[] values = new String[children.length];
                    for (int valueIndex = 0; valueIndex < children.length; valueIndex++) {
                        values[valueIndex] =
                            DocumentHelper.getSimpleElementText(children[valueIndex]);
                    }

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        for (int i = 0; i < children.length; i++){
            metaElement.removeChild(children[i]);  
        }


        for (int type = 0; type < 2; type++) {
            NamespaceHelper helper = new NamespaceHelper(namespaces[type], prefixes[type], doc);
            String[] elementNames = arrays[type];
            for (int i = 0; i < elementNames.length; i++) {
                String[] values = (String[]) maps[type].get(elementNames[i]);
                for (int valueIndex = 0; valueIndex < values.length; valueIndex++) {
                    Element valueElement =
                        helper.createElement(elementNames[i], values[valueIndex]);
                    metaElement.appendChild(valueElement);
                }
            }
        }

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     * Returns the Lenya meta data element.
     * @param doc The XML document.
     * @return A DOM element.
     */
    protected Element getMetaElement(org.w3c.dom.Document doc) throws DocumentException {
        NamespaceHelper namespaceHelper =
            new NamespaceHelper(PageEnvelope.NAMESPACE, PageEnvelope.DEFAULT_PREFIX, doc);
        Element documentElement = doc.getDocumentElement();
        Element metaElement = namespaceHelper.getFirstChild(documentElement, META);


        if (metaElement == null) {
            metaElement = namespaceHelper.createElement(META);
            Element[] children = DocumentHelper.getChildren(documentElement);
            if (children.length == 0) {
                documentElement.appendChild(metaElement);
            } else {
                documentElement.insertBefore(metaElement, children[0]);

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