ALF-10770: create schema representation

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31224 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

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

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2005-2011 Alfresco Software Limited.
+ *
+ * This file is part of Alfresco
+ *
+ * Alfresco is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Alfresco is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.alfresco.util.schemacomp;
+
+import java.util.List;
+
+import org.alfresco.util.Pair;
+import org.alfresco.util.schemacomp.model.DbObject;
+
+/**
+ * Result of a comparison between two database objects.
+ * 
+ * @author Matt Ward
+ */
+public class Result
+{
+    public enum Type { ONLY_IN_LEFT, ONLY_IN_RIGHT, IN_BOTH_NO_DIFFERENCE, IN_BOTH_BUT_DIFFERENCE };
+    private Type type;
+    
+    // Field list, where differences lie - recorded for single level only, otherwise, an error deep down would end
+    // up having the whole schema as being different, but that isn't useful. During reporting, climb back up the tree
+    // to produce a path, e.g. "my_schema.my_table.my_column.nullable has differences"
+    
+    
+    // Could hold the two items that (may - see type above) differ?
+    // These objects are already structured, no field names required.
+    DbObject left;
+    DbObject right;
+    
+    // or, could...
+    // Have differences
+    
+    
+    public static class DiffField
+    {
+        String leftFieldName;
+        String leftVal;
+        
+        String rightFieldName;
+        String rightVal;
+    }
+    
+}