Refactored persistence for AVM. I'm guessing because I dropped a number of

unnecessary flushes seems about 20% snappier.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/WCM-DEV2/root@3296 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/avm/VersionRootDAO.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2006 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * 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.alfresco.repo.avm;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * DAO for VersionRoot objects.
+ * @author britt
+ */
+public interface VersionRootDAO
+{
+    /**
+     * Save an unsaved VersionRoot.
+     * @param vr The VersionRoot to save.
+     */
+    public void save(VersionRoot vr);
+
+    /**
+     * Delete a VersionRoot.
+     * @param vr The VersionRoot to delete.
+     */
+    public void delete(VersionRoot vr);
+    
+    /**
+     * Get all the version roots in a given repository.
+     * @param rep The repository.
+     * @return A List of VersionRoots.  In id order.
+     */
+    public List<VersionRoot> getAllInRepository(Repository rep);
+
+    /**
+     * Get the VersionRoot corresponding to the given id.
+     * @param rep The repository
+     * @param id The version id.
+     * @return The VersionRoot or null if not found.
+     */
+    public VersionRoot getByVersionID(Repository rep, int id);
+    
+    /**
+     * Get the version of a repository by dates.
+     * @param rep The repository.
+     * @param from The starting date.  May be null but not with to null also.
+     * @param to The ending date.  May be null but not with from null also.
+     * @return A List of VersionRoots.
+     */
+    public List<VersionRoot> getByDates(Repository rep, Date from, Date to);
+    
+    /**
+     * Get the highest numbered version in a repository.
+     * @param rep The repository.
+     * @return The highest numbered version.
+     */
+    public VersionRoot getMaxVersion(Repository rep);
+}