Remove support JUnit

[lgpl/argeo-commons.git] / org.argeo.eclipse.ui / src / main / java / org / argeo / eclipse / ui / jcr / JcrPreferenceStore.java

diff --git a/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java b/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java
new file mode 100644 (file)
index 0000000..c9777ce
--- /dev/null
+++ b/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java
@@ -0,0 +1,163 @@
+/*
+ * 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.eclipse.ui.jcr;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Properties;
+
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.PropertyIterator;
+import javax.jcr.RepositoryException;
+import javax.jcr.Session;
+import javax.jcr.version.VersionManager;
+
+import org.apache.commons.io.IOUtils;
+import org.argeo.ArgeoException;
+import org.argeo.jcr.ArgeoNames;
+import org.argeo.jcr.ArgeoTypes;
+import org.argeo.jcr.JcrUtils;
+import org.argeo.jcr.UserJcrUtils;
+import org.eclipse.jface.preference.PreferenceStore;
+import org.eclipse.ui.preferences.ScopedPreferenceStore;
+import org.osgi.framework.BundleContext;
+
+/**
+ * Persist preferences as key/value pairs under ~/argeo:preferences.<br>
+ * TODO: better integrate JCR and Eclipse:<br>
+ * - typing<br>
+ * - use eclipse preferences<br>
+ * - better integrate with {@link ScopedPreferenceStore} provided by RAP
+ */
+public class JcrPreferenceStore extends PreferenceStore implements ArgeoNames {
+       private Session session;
+       private BundleContext bundleContext;
+
+       /** Retrieves the preference node */
+       protected Node getPreferenceNode() {
+               try {
+                       if (session.hasPendingChanges())
+                               session.save();
+                       Node userHome = UserJcrUtils.getUserHome(session);
+                       if (userHome == null)
+                               throw new ArgeoException("No user home for "
+                                               + session.getUserID());
+                       Node preferences;
+                       if (!userHome.hasNode(ARGEO_PREFERENCES)) {
+                               preferences = userHome.addNode(ARGEO_PREFERENCES);
+                               preferences.addMixin(ArgeoTypes.ARGEO_PREFERENCE_NODE);
+                               session.save();
+                       } else
+                               preferences = userHome.getNode(ARGEO_PREFERENCES);
+
+                       String pluginPreferencesName = bundleContext.getBundle()
+                                       .getSymbolicName();
+                       Node pluginPreferences;
+                       if (!preferences.hasNode(pluginPreferencesName)) {
+                               VersionManager vm = session.getWorkspace().getVersionManager();
+                               vm.checkout(preferences.getPath());
+                               pluginPreferences = preferences.addNode(pluginPreferencesName);
+                               pluginPreferences.addMixin(ArgeoTypes.ARGEO_PREFERENCE_NODE);
+                               session.save();
+                               vm.checkin(preferences.getPath());
+                       } else
+                               pluginPreferences = preferences.getNode(pluginPreferencesName);
+                       return pluginPreferences;
+               } catch (RepositoryException e) {
+                       e.printStackTrace();
+                       JcrUtils.discardQuietly(session);
+                       throw new ArgeoException("Cannot retrieve preferences", e);
+               }
+
+       }
+
+       @Override
+       public void load() throws IOException {
+               ByteArrayOutputStream out = null;
+               ByteArrayInputStream in = null;
+               try {
+                       Properties props = new Properties();
+                       PropertyIterator it = getPreferenceNode().getProperties();
+                       while (it.hasNext()) {
+                               Property p = it.nextProperty();
+                               if (!p.isMultiple() && !p.getDefinition().isProtected()) {
+                                       props.setProperty(p.getName(), p.getValue().getString());
+                               }
+                       }
+                       out = new ByteArrayOutputStream();
+                       props.store(out, "");
+                       in = new ByteArrayInputStream(out.toByteArray());
+                       load(in);
+               } catch (Exception e) {
+                       e.printStackTrace();
+                       throw new ArgeoException("Cannot load preferences", e);
+               } finally {
+                       IOUtils.closeQuietly(in);
+                       IOUtils.closeQuietly(out);
+               }
+       }
+
+       @Override
+       public void save() throws IOException {
+               ByteArrayOutputStream out = null;
+               ByteArrayInputStream in = null;
+               Node pluginPreferences = null;
+               try {
+                       out = new ByteArrayOutputStream();
+                       save(out, "");
+                       in = new ByteArrayInputStream(out.toByteArray());
+                       Properties props = new Properties();
+                       props.load(in);
+                       pluginPreferences = getPreferenceNode();
+                       VersionManager vm = pluginPreferences.getSession().getWorkspace()
+                                       .getVersionManager();
+                       vm.checkout(pluginPreferences.getPath());
+                       for (Object key : props.keySet()) {
+                               String name = key.toString();
+                               String value = props.getProperty(name);
+                               pluginPreferences.setProperty(name, value);
+                       }
+                       JcrUtils.updateLastModified(pluginPreferences);
+                       pluginPreferences.getSession().save();
+                       vm.checkin(pluginPreferences.getPath());
+               } catch (Exception e) {
+                       JcrUtils.discardUnderlyingSessionQuietly(pluginPreferences);
+                       throw new ArgeoException("Cannot save preferences", e);
+               } finally {
+                       IOUtils.closeQuietly(in);
+                       IOUtils.closeQuietly(out);
+               }
+       }
+
+       public void init() {
+               try {
+                       load();
+               } catch (IOException e) {
+                       throw new ArgeoException("Cannot initialize preference store", e);
+               }
+       }
+
+       public void setSession(Session session) {
+               this.session = session;
+       }
+
+       public void setBundleContext(BundleContext bundleContext) {
+               this.bundleContext = bundleContext;
+       }
+
+}