Fix for ALF-786: WCM Cluster / Lucene: Searching in staging returns duplicate entries (when concurrently submtting)

- fixed duplication arising from indexing 0-1 and 0-2 against the index for near simultaneous snapshots 
- tracking has not been modified nor has index rebuild - the latest index info from the AVM index is definitive and complete - we do not have to do additional work as we do for DM

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@19898 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

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

@@ -85,4 +85,26 @@ public interface VersionRootDAO
      * @return The highest numbered id.
      */
     public Integer getMaxVersionID(AVMStore store);
+
+    /**
+     * @param store
+     * @param version
+     * @return
+     */
+    public List<VersionRoot> getByVersionsTo(AVMStore store, int version);
+
+    /**
+     * @param store
+     * @param version
+     * @return
+     */
+    public List<VersionRoot> getByVersionsFrom(AVMStore store, int version);
+
+    /**
+     * @param store
+     * @param startVersion
+     * @param endVersion
+     * @return
+     */
+    public List<VersionRoot> getByVersionsBetween(AVMStore store, int startVersion, int endVersion);
 }