Restructure node distirbution

[lgpl/argeo-commons.git] / server / runtime / org.argeo.server.core / src / main / java / org / argeo / server / mvc / jcr / JcrXmlServerSerializer.java

diff --git a/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/mvc/jcr/JcrXmlServerSerializer.java b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/mvc/jcr/JcrXmlServerSerializer.java
new file mode 100644 (file)
index 0000000..467b4d3
--- /dev/null
+++ b/server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/mvc/jcr/JcrXmlServerSerializer.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2007-2012 Mathieu Baudier
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.argeo.server.mvc.jcr;
+
+import javax.jcr.Node;
+import javax.jcr.NodeIterator;
+import javax.jcr.RepositoryException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+
+import org.argeo.ArgeoException;
+import org.argeo.server.ServerSerializer;
+import org.springframework.xml.dom.DomContentHandler;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+/** @deprecated */
+public class JcrXmlServerSerializer implements ServerSerializer {
+       private String contentTypeCharset = "UTF-8";
+
+       private final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
+                       .newInstance();
+       private final TransformerFactory transformerFactory = TransformerFactory
+                       .newInstance();
+
+       public void serialize(Object obj, HttpServletRequest request,
+                       HttpServletResponse response) {
+               if (!(obj instanceof Node))
+                       throw new ArgeoException("Only " + Node.class + " is supported");
+
+               String noRecurseStr = request.getParameter("noRecurse");
+               boolean noRecurse = noRecurseStr != null && noRecurseStr.equals("true");
+
+               String depthStr = request.getParameter("depth");
+               String downloadStr = request.getParameter("download");
+
+               Node node = (Node) obj;
+
+               try {
+                       String contentType = "text/xml;charset=" + contentTypeCharset;
+                       // download case
+                       if (downloadStr != null && downloadStr.equals("true")) {
+                               String fileName = node.getName().replace(':', '_') + ".xml";
+                               contentType = contentType + ";name=\"" + fileName + "\"";
+                               response.setHeader("Content-Disposition",
+                                               "attachment; filename=\"" + fileName + "\"");
+                               response.setHeader("Expires", "0");
+                               response
+                                               .setHeader("Cache-Control", "no-cache, must-revalidate");
+                               response.setHeader("Pragma", "no-cache");
+                       }
+
+                       response.setContentType(contentType);
+                       if (depthStr == null) {
+                               node.getSession().exportDocumentView(node.getPath(),
+                                               response.getOutputStream(), true, noRecurse);
+                       } else {
+                               int depth = Integer.parseInt(depthStr);
+                               Document document = documentBuilderFactory.newDocumentBuilder()
+                                               .newDocument();
+                               serializeLevelToDom(node, document, 0, depth);
+                               Transformer transformer = transformerFactory.newTransformer();
+                               transformer.transform(new DOMSource(document),
+                                               new StreamResult(response.getOutputStream()));
+                       }
+               } catch (Exception e) {
+                       throw new ArgeoException("Cannot serialize " + node, e);
+               }
+       }
+
+       protected void serializeLevelToDom(Node currentJcrNode,
+                       org.w3c.dom.Node currentDomNode, int currentDepth, int targetDepth)
+                       throws RepositoryException, SAXException {
+               DomContentHandler domContentHandler = new DomContentHandler(
+                               currentDomNode);
+               currentJcrNode.getSession().exportDocumentView(
+                               currentJcrNode.getPath(), domContentHandler, true, true);
+
+               if (currentDepth == targetDepth)
+                       return;
+
+               // TODO: filter
+               NodeIterator nit = currentJcrNode.getNodes();
+               while (nit.hasNext()) {
+                       Node nextJcrNode = nit.nextNode();
+                       org.w3c.dom.Node nextDomNode;
+                       if (currentDomNode instanceof Document)
+                               nextDomNode = ((Document) currentDomNode).getDocumentElement();
+                       else {
+                               String name = currentJcrNode.getName();
+                               NodeList nodeList = ((Element) currentDomNode)
+                                               .getElementsByTagName(name);
+                               if (nodeList.getLength() < 1)
+                                       throw new ArgeoException("No elment named " + name
+                                                       + " under " + currentDomNode);
+                               // we know it is the last one added
+                               nextDomNode = nodeList.item(nodeList.getLength() - 1);
+                       }
+                       // recursive call
+                       serializeLevelToDom(nextJcrNode, nextDomNode, currentDepth + 1,
+                                       targetDepth);
+               }
+       }
+
+       public void setContentTypeCharset(String contentTypeCharset) {
+               this.contentTypeCharset = contentTypeCharset;
+       }
+
+}