Rename Commons bundles

[lgpl/argeo-commons.git] / org.argeo.jcr / src / org / argeo / jcr / JcrRepositoryWrapper.java

diff --git a/org.argeo.jcr/src/org/argeo/jcr/JcrRepositoryWrapper.java b/org.argeo.jcr/src/org/argeo/jcr/JcrRepositoryWrapper.java
new file mode 100644 (file)
index 0000000..6c23aca
--- /dev/null
+++ b/org.argeo.jcr/src/org/argeo/jcr/JcrRepositoryWrapper.java
@@ -0,0 +1,150 @@
+/*
+ * 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 javax.jcr.Credentials;
+import javax.jcr.LoginException;
+import javax.jcr.NoSuchWorkspaceException;
+import javax.jcr.Repository;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.Value;
+
+/**
+ * Wrapper around a JCR repository which allows to simplify configuration and
+ * intercept some actions. It exposes itself as a {@link Repository}.
+ */
+public abstract class JcrRepositoryWrapper implements Repository {
+       // private final static Log log = LogFactory
+       // .getLog(JcrRepositoryWrapper.class);
+
+       // wrapped repository
+       private Repository repository;
+
+       private Boolean autocreateWorkspaces = false;
+
+       /**
+        * Empty constructor, {@link #init()} should be called after properties have
+        * been set
+        */
+       public JcrRepositoryWrapper() {
+       }
+
+       /** Initializes */
+       public void init() {
+       }
+
+       /** Shutdown the repository */
+       public void destroy() throws Exception {
+       }
+
+       /*
+        * DELEGATED JCR REPOSITORY METHODS
+        */
+
+       public String getDescriptor(String key) {
+               return getRepository().getDescriptor(key);
+       }
+
+       public String[] getDescriptorKeys() {
+               return getRepository().getDescriptorKeys();
+       }
+
+       /** Central login method */
+       public Session login(Credentials credentials, String workspaceName)
+                       throws LoginException, NoSuchWorkspaceException,
+                       RepositoryException {
+               Session session;
+               try {
+                       session = getRepository().login(credentials, workspaceName);
+               } catch (NoSuchWorkspaceException e) {
+                       if (autocreateWorkspaces && workspaceName != null)
+                               session = createWorkspaceAndLogsIn(credentials, workspaceName);
+                       else
+                               throw e;
+               }
+               processNewSession(session);
+               return session;
+       }
+
+       public Session login() throws LoginException, RepositoryException {
+               return login(null, null);
+       }
+
+       public Session login(Credentials credentials) throws LoginException,
+                       RepositoryException {
+               return login(credentials, null);
+       }
+
+       public Session login(String workspaceName) throws LoginException,
+                       NoSuchWorkspaceException, RepositoryException {
+               return login(null, workspaceName);
+       }
+
+       /** Called after a session has been created, does nothing by default. */
+       protected void processNewSession(Session session) {
+       }
+
+       /** Wraps access to the repository, making sure it is available. */
+       protected synchronized Repository getRepository() {
+//             if (repository == null) {
+//                     throw new ArgeoJcrException("No repository initialized."
+//                                     + " Was the init() method called?"
+//                                     + " The destroy() method should also"
+//                                     + " be called on shutdown.");
+//             }
+               return repository;
+       }
+
+       /**
+        * Logs in to the default workspace, creates the required workspace, logs
+        * out, logs in to the required workspace.
+        */
+       protected Session createWorkspaceAndLogsIn(Credentials credentials,
+                       String workspaceName) throws RepositoryException {
+               if (workspaceName == null)
+                       throw new ArgeoJcrException("No workspace specified.");
+               Session session = getRepository().login(credentials);
+               session.getWorkspace().createWorkspace(workspaceName);
+               session.logout();
+               return getRepository().login(credentials, workspaceName);
+       }
+
+       public boolean isStandardDescriptor(String key) {
+               return getRepository().isStandardDescriptor(key);
+       }
+
+       public boolean isSingleValueDescriptor(String key) {
+               return getRepository().isSingleValueDescriptor(key);
+       }
+
+       public Value getDescriptorValue(String key) {
+               return getRepository().getDescriptorValue(key);
+       }
+
+       public Value[] getDescriptorValues(String key) {
+               return getRepository().getDescriptorValues(key);
+       }
+
+       public synchronized void setRepository(Repository repository) {
+               this.repository = repository;
+       }
+
+       public void setAutocreateWorkspaces(Boolean autocreateWorkspaces) {
+               this.autocreateWorkspaces = autocreateWorkspaces;
+       }
+
+}