ALF-7260: schema comparator

* replace path/push/pop mechanism as it doesn't work well at reporting where differences/validation errors occur.
* add getParent() to DbObject - so that a path-style identifier can be deduced for a DbObject when needed
* add DbProperty to specify a specific DbObject's property and value -- acts as a schema location pointer
* refactored Result code (need difference result and validation error result)





git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31527 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/util/schemacomp/SchemaComparator.java

@@ -47,7 +47,7 @@ public class SchemaComparator
     {
         this.leftSchema = left;
         this.rightSchema = right;
-        this.ctx = new DiffContext(dialect, new Differences(), new ArrayList<ValidationResult>());
+        this.ctx = new DiffContext(dialect, new Results(), new ArrayList<ValidationResult>());
     }
     
     
@@ -81,7 +81,7 @@ public class SchemaComparator
     /**
      * @return the differences
      */
-    public Differences getDifferences()
+    public Results getDifferences()
     {
         return ctx.getDifferences();
     }