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.


        DefaultPolicy policy = new DefaultPolicy();
        Element policyElement = document.getDocumentElement();
        assert policyElement.getLocalName().equals(POLICY_ELEMENT);


        NamespaceHelper helper =
            new NamespaceHelper(
                AccessController.NAMESPACE,
                AccessController.DEFAULT_PREFIX,
                document);


        Element[] credentialElements = helper.getChildren(policyElement);


        for (int i = 0; i < credentialElements.length; i++) {
            Accreditable accreditable = null;


            String id = credentialElements[i].getAttribute(ID_ATTRIBUTE);
            accreditable = getAccreditable(credentialElements[i].getLocalName(), id);


            Credential credential = new Credential(accreditable);


            Element[] roleElements = helper.getChildren(credentialElements[i], ROLE_ELEMENT);


            for (int j = 0; j < roleElements.length; j++) {
                String roleId = roleElements[j].getAttribute(ID_ATTRIBUTE);
                Role role = getAccreditableManager().getRoleManager().getRole(roleId);
                credential.addRole(role);

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     * @param policy The policy to save.
     * @return A DOM document.
     * @throws AccessControlException when something went wrong.
     */
    public static Document savePolicy(DefaultPolicy policy) throws AccessControlException {
        NamespaceHelper helper;


        try {
            helper =
                new NamespaceHelper(
                    AccessController.NAMESPACE,
                    AccessController.DEFAULT_PREFIX,
                    POLICY_ELEMENT);
        } catch (ParserConfigurationException e) {
            throw new AccessControlException(e);
        }


        Credential[] credentials = policy.getCredentials();
        Element policyElement = helper.getDocument().getDocumentElement();


        for (int i = 0; i < credentials.length; i++) {
            Accreditable accreditable = credentials[i].getAccreditable();
            Element accreditableElement = save(accreditable, helper);
            
            Role[] roles = credentials[i].getRoles();
            for (int j = 0; j < roles.length; j++) {
                Element roleElement = helper.createElement(ROLE_ELEMENT);
                roleElement.setAttribute(ID_ATTRIBUTE, roles[j].getId());
                accreditableElement.appendChild(roleElement);
            }
            
            policyElement.appendChild(accreditableElement);
        }
        
        policyElement.setAttribute(SSL_ATTRIBUTE, Boolean.toString(policy.isSSLProtected()));


        return helper.getDocument();
    }

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        } catch (Exception e) {
            throw new BuildException(e);
        }
        assert document.getDocumentElement().getLocalName().equals(USECASES_ELEMENT);


        NamespaceHelper helper =
            new NamespaceHelper(
                AccessController.NAMESPACE,
                AccessController.DEFAULT_PREFIX,
                document);


        Element[] usecaseElements =
            helper.getChildren(document.getDocumentElement(), USECASE_ELEMENT);
        for (int i = 0; i < usecaseElements.length; i++) {
            String usecaseId = usecaseElements[i].getAttribute(ID_ATTRIBUTE);
            Element[] roleElements = helper.getChildren(usecaseElements[i], ROLE_ELEMENT);
            Set roleIds = new HashSet();
            for (int j = 0; j < roleElements.length; j++) {
                String roleId = roleElements[j].getAttribute(ID_ATTRIBUTE);
                roleIds.add(roleId);
            }

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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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     * @see org.apache.lenya.cms.publication.CollectionImpl#getNamespaceHelper()
     */
    protected NamespaceHelper getNamespaceHelper() throws DocumentException,
            ParserConfigurationException, SAXException, IOException {


        NamespaceHelper helper = super.getNamespaceHelper();
        Element collectionElement = helper.getDocument().getDocumentElement();
        String namespaceDeclaration = collectionElement.getAttributeNS(
                    "http://www.w3.org/2000/xmlns/", "xlink");
        if (namespaceDeclaration == null || !namespaceDeclaration.equals(XLink.XLINK_NAMESPACE)) {
            collectionElement.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink",
                    XLink.XLINK_NAMESPACE);

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     * @param helper The namespace helper of the document.
     * @return An XML element.
     */
    public Element save(NamespaceHelper helper) {
        org.w3c.dom.Document document = helper.getDocument();
        NamespaceHelper taskHelper =
            new NamespaceHelper(Task.NAMESPACE, Task.DEFAULT_PREFIX, document);
        Element element = taskHelper.createElement(ELEMENT_TASK);
        
        List keys = new ArrayList(getParameters().keySet());
        Collections.sort(keys);


        for (Iterator i = keys.iterator(); i.hasNext();) {
            String key = (String) i.next();
            Element parameterElement = taskHelper.createElement(ELEMENT_PARAMETER);
            parameterElement.setAttribute(ATTRIBUTE_NAME, key);
            parameterElement.setAttribute(ATTRIBUTE_VALUE, (String) getParameters().get(key));
            element.appendChild(parameterElement);
        }

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            return;
        }


        // Create node
        NamespaceHelper helper = new NamespaceHelper(NAMESPACE_URI, "", document);
        Element child = helper.createElement(SiteTreeNodeImpl.NODE_NAME);
        child.setAttribute(SiteTreeNodeImpl.ID_ATTRIBUTE_NAME, id);
        
        if (visibleInNav) {
            child.setAttribute(SiteTreeNodeImpl.VISIBLEINNAV_ATTRIBUTE_NAME, "true");
        } else {

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     * @see org.apache.lenya.cms.publication.SiteTree#getTopNodes()
     */
    public SiteTreeNode[] getTopNodes() {
        List childElements = new ArrayList();


        NamespaceHelper helper = new NamespaceHelper(NAMESPACE_URI, "", document);
 
        Element[] elements = helper.getChildren(document.getDocumentElement(), SiteTreeNodeImpl.NODE_NAME);


        for (int i = 0; i < elements.length; i++) {
            SiteTreeNode newNode = new SiteTreeNodeImpl(elements[i], this);
            childElements.add(newNode);
        }

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