Working JCR based preferences

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

diff --git a/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java b/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java
index f8dc23f47c2b6bab131ade2c4e37c6ddb9919d29..1018ddd29774846b7d8eba3c243a0b8c27f52f69 100644 (file)
--- a/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java
+++ b/eclipse/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/JcrPreferenceStore.java
@@ -10,30 +10,60 @@ 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.eclipse.jface.preference.PreferenceStore;
+import org.eclipse.ui.preferences.ScopedPreferenceStore;
+import org.osgi.framework.BundleContext;
 
-/** Persist preferences as key/value pairs under ~/argeo:preferences */
-public class JcrPreferenceStore extends PreferenceStore {
+/**
+ * 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 = JcrUtils.getUserHome(session);
+                       if (userHome == null)
+                               throw new ArgeoException("No user home for "
+                                               + session.getUserID());
                        Node preferences;
-                       if (!userHome.hasNode(ArgeoNames.ARGEO_PREFERENCES)) {
-                               preferences = userHome.addNode(ArgeoNames.ARGEO_PREFERENCES);
+                       if (!userHome.hasNode(ARGEO_PREFERENCES)) {
+                               preferences = userHome.addNode(ARGEO_PREFERENCES);
+                               preferences.addMixin(ArgeoTypes.ARGEO_PREFERENCE_NODE);
                                session.save();
-                       } else {
-                               preferences = userHome.getNode(ArgeoNames.ARGEO_PREFERENCES);
-                       }
-                       return preferences;
+                       } 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);
                }
@@ -49,7 +79,7 @@ public class JcrPreferenceStore extends PreferenceStore {
                        PropertyIterator it = getPreferenceNode().getProperties();
                        while (it.hasNext()) {
                                Property p = it.nextProperty();
-                               if (!p.isMultiple()) {
+                               if (!p.isMultiple() && !p.getDefinition().isProtected()) {
                                        props.setProperty(p.getName(), p.getValue().getString());
                                }
                        }
@@ -58,6 +88,7 @@ public class JcrPreferenceStore extends PreferenceStore {
                        in = new ByteArrayInputStream(out.toByteArray());
                        load(in);
                } catch (Exception e) {
+                       e.printStackTrace();
                        throw new ArgeoException("Cannot load preferences", e);
                } finally {
                        IOUtils.closeQuietly(in);
@@ -69,31 +100,48 @@ public class JcrPreferenceStore extends PreferenceStore {
        public void save() throws IOException {
                ByteArrayOutputStream out = null;
                ByteArrayInputStream in = null;
-               Node preferences = null;
+               Node pluginPreferences = null;
                try {
                        out = new ByteArrayOutputStream();
                        save(out, "");
                        in = new ByteArrayInputStream(out.toByteArray());
                        Properties props = new Properties();
                        props.load(in);
-                       preferences = getPreferenceNode();
+                       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);
-                               preferences.setProperty(name, value);
+                               pluginPreferences.setProperty(name, value);
                        }
-                       preferences.getSession().save();
+                       JcrUtils.updateLastModified(pluginPreferences);
+                       pluginPreferences.getSession().save();
+                       vm.checkin(pluginPreferences.getPath());
                } catch (Exception e) {
-                       JcrUtils.discardUnderlyingSessionQuietly(preferences);
-                       throw new ArgeoException("Cannot load preferences", 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;
+       }
+
 }