--- /dev/null
+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * 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.jcr;
+
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.List;
+
+import javax.jcr.Binary;
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.nodetype.NodeType;
+import javax.jcr.version.Version;
+import javax.jcr.version.VersionHistory;
+import javax.jcr.version.VersionIterator;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.argeo.ArgeoException;
+
+/**
+ * Bridge Spring resources and JCR folder / files semantics (nt:folder /
+ * nt:file), supporting versioning as well.
+ */
+public class JcrResourceAdapter {
+ private final static Log log = LogFactory.getLog(JcrResourceAdapter.class);
+
+ private Session session;
+
+ private Boolean versioning = true;
+ private String defaultEncoding = "UTF-8";
+
+ // private String restoreBase = "/.restore";
+
+ public JcrResourceAdapter() {
+ }
+
+ public JcrResourceAdapter(Session session) {
+ this.session = session;
+ }
+
+ public void mkdirs(String path) {
+ JcrUtils.mkdirs(session(), path, NodeType.NT_FOLDER,
+ NodeType.NT_FOLDER, versioning);
+ }
+
+ public void create(String path, InputStream in, String mimeType) {
+ try {
+ if (session().itemExists(path)) {
+ throw new ArgeoException("Node " + path + " already exists.");
+ }
+
+ int index = path.lastIndexOf('/');
+ String parentPath = path.substring(0, index);
+ if (parentPath.equals(""))
+ parentPath = "/";
+ String fileName = path.substring(index + 1);
+ if (!session().itemExists(parentPath))
+ throw new ArgeoException("Parent folder of node " + path
+ + " does not exist: " + parentPath);
+
+ Node folderNode = (Node) session().getItem(parentPath);
+ Node fileNode = folderNode.addNode(fileName, "nt:file");
+
+ Node contentNode = fileNode.addNode(Property.JCR_CONTENT,
+ "nt:resource");
+ if (mimeType != null)
+ contentNode.setProperty(Property.JCR_MIMETYPE, mimeType);
+ contentNode.setProperty(Property.JCR_ENCODING, defaultEncoding);
+ Binary binary = session().getValueFactory().createBinary(in);
+ contentNode.setProperty(Property.JCR_DATA, binary);
+ JcrUtils.closeQuietly(binary);
+ Calendar lastModified = Calendar.getInstance();
+ // lastModified.setTimeInMillis(file.lastModified());
+ contentNode.setProperty(Property.JCR_LAST_MODIFIED, lastModified);
+ // resNode.addMixin("mix:referenceable");
+
+ if (versioning)
+ fileNode.addMixin("mix:versionable");
+
+ session().save();
+
+ if (versioning)
+ session().getWorkspace().getVersionManager()
+ .checkin(fileNode.getPath());
+
+ if (log.isDebugEnabled())
+ log.debug("Created " + path);
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot create node for " + path, e);
+ }
+
+ }
+
+ public void update(String path, InputStream in) {
+ try {
+
+ if (!session().itemExists(path)) {
+ String type = null;
+ // FIXME: using javax.activation leads to conflict between Java
+ // 1.5 and 1.6 (since javax.activation was included in Java 1.6)
+ // String type = new MimetypesFileTypeMap()
+ // .getContentType(FilenameUtils.getName(path));
+ create(path, in, type);
+ return;
+ }
+
+ Node fileNode = (Node) session().getItem(path);
+ Node contentNode = fileNode.getNode(Property.JCR_CONTENT);
+ if (versioning)
+ session().getWorkspace().getVersionManager()
+ .checkout(fileNode.getPath());
+ Binary binary = session().getValueFactory().createBinary(in);
+ contentNode.setProperty(Property.JCR_DATA, binary);
+ JcrUtils.closeQuietly(binary);
+ Calendar lastModified = Calendar.getInstance();
+ // lastModified.setTimeInMillis(file.lastModified());
+ contentNode.setProperty(Property.JCR_LAST_MODIFIED, lastModified);
+
+ session().save();
+ if (versioning)
+ session().getWorkspace().getVersionManager()
+ .checkin(fileNode.getPath());
+
+ if (log.isDebugEnabled())
+ log.debug("Updated " + path);
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot update node " + path, e);
+ }
+ }
+
+ public List<Calendar> listVersions(String path) {
+ if (!versioning)
+ throw new ArgeoException("Versioning is not activated");
+
+ try {
+ List<Calendar> versions = new ArrayList<Calendar>();
+ Node fileNode = (Node) session().getItem(path);
+ VersionHistory history = session().getWorkspace()
+ .getVersionManager().getVersionHistory(fileNode.getPath());
+ for (VersionIterator it = history.getAllVersions(); it.hasNext();) {
+ Version version = (Version) it.next();
+ versions.add(version.getCreated());
+ if (log.isTraceEnabled()) {
+ log.debug(version);
+ // debug(version);
+ }
+ }
+ return versions;
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot list version of node " + path, e);
+ }
+ }
+
+ public InputStream retrieve(String path) {
+ try {
+ Node node = (Node) session().getItem(
+ path + "/" + Property.JCR_CONTENT);
+ Property property = node.getProperty(Property.JCR_DATA);
+ return property.getBinary().getStream();
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot retrieve " + path, e);
+ }
+ }
+
+ public synchronized InputStream retrieve(String path, Integer revision) {
+ if (!versioning)
+ throw new ArgeoException("Versioning is not activated");
+
+ try {
+ Node fileNode = (Node) session().getItem(path);
+ VersionHistory history = session().getWorkspace()
+ .getVersionManager().getVersionHistory(fileNode.getPath());
+ int count = 0;
+ Version version = null;
+ for (VersionIterator it = history.getAllVersions(); it.hasNext();) {
+ version = (Version) it.next();
+ if (count == revision + 1) {
+ InputStream in = fromVersion(version);
+ if (log.isDebugEnabled())
+ log.debug("Retrieved " + path + " at revision "
+ + revision);
+ return in;
+ }
+ count++;
+ }
+ } catch (Exception e) {
+ throw new ArgeoException("Cannot retrieve version " + revision
+ + " of " + path, e);
+ }
+
+ throw new ArgeoException("Version " + revision
+ + " does not exist for node " + path);
+ }
+
+ protected InputStream fromVersion(Version version)
+ throws RepositoryException {
+ Node frozenNode = version.getNode("jcr:frozenNode");
+ InputStream in = frozenNode.getNode(Property.JCR_CONTENT)
+ .getProperty(Property.JCR_DATA).getBinary().getStream();
+ return in;
+ }
+
+ protected Session session() {
+ return session;
+ }
+
+ public void setVersioning(Boolean versioning) {
+ this.versioning = versioning;
+ }
+
+ public void setDefaultEncoding(String defaultEncoding) {
+ this.defaultEncoding = defaultEncoding;
+ }
+
+ protected String fill(Integer number) {
+ int size = 4;
+ String str = number.toString();
+ for (int i = str.length(); i < size; i++) {
+ str = "0" + str;
+ }
+ return str;
+ }
+
+ public void setSession(Session session) {
+ this.session = session;
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff