Fixed permission bug appearing as Hibernate null issue.

Added an index on the "NodeRef" portion of the node table.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2735 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/domain/hibernate/Node.hbm.xml

@@ -21,6 +21,8 @@
       <id name="id" column="id" type="long" >
          <generator class="native" />
       </id>
+      <!-- the natural ID of the node -->
+      <natural-id mutable="true">
          <!-- forward assoc to store -->
          <many-to-one
                name="store"
@@ -34,6 +36,7 @@
          </many-to-one>
          <!-- the store-unique identifier -->
          <property name="uuid" column="uuid" type="string" length="36" />
+      </natural-id>
       <property name="typeQName" column="type_qname" type="QName" length="255" not-null="true" />
       <!-- inverse assoc to access control list -->
       <one-to-one 
@@ -43,15 +46,6 @@
             lazy="no-proxy"
             fetch="select"
             cascade="delete" /> 
-      <!-- inverse assoc to node status -->
-<!--
-      <one-to-one
-            name="status"
-            class="org.alfresco.repo.domain.hibernate.NodeStatusImpl"
-            property-ref="node"
-            lazy="no-proxy"
-            fetch="select" />
--->
       <!-- forward assoc to properties -->
       <map
             name="properties" 

source/java/org/alfresco/repo/domain/hibernate/PermissionsDaoComponentImpl.java

@@ -141,7 +141,12 @@ public class PermissionsDaoComponentImpl extends HibernateDaoSupport implements
         DbAccessControlList acl = null;
         if (results.size() == 0)
         {
-            // we'll return null
+            // create it
+            if (create)
+            {
+                acl = createAccessControlList(nodeRef);
+            }
+            // else null will be returned
         }
         else if (results.size() > 0)
         {