--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/+utils/@jmysql/updateObjMetadataV1.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,137 @@
+function id = updateObjMetadataV1(conn, obj, objid)
+  % an utility to update entries for various object metadata in the
+  % corresponding tables. uses the old v2.1 database schema.
+  %
+  % MUST BE KEPT IN SYNC WITH insertObjMetadataV1()
+  %
+  % conn   - Java database connection object
+  % obj    - object
+  % objid  - unique ID of the object in the database
+  %
+
+  import utils.const.*
+
+  if nargin < 3
+    error('### incorrect usage');
+  end
+  if ~isjava(conn)
+    error('### incorrect usage');
+  end
+
+  % default return value
+  id = [];
+  
+  % class of object
+  cl = class(obj);
+  utils.helper.msg(msg.PROC2, 'making meta data entry for %s object', cl);
+
+  switch cl
+    case 'ao'
+
+      % get data type and id
+      stmt = conn.prepareStatement(...
+        'SELECT data_id, data_type FROM ao WHERE obj_id = ?');
+      stmt.setObject(1, objid);
+      rs = stmt.executeQuery();
+      rs.next();
+      dataid = rs.getInt(1);
+      datatype = rs.getString(2);
+      rs.close();
+      stmt.close();
+      
+      % check if the data type is consistent
+      if ~strcmp(datatype, class(obj.data))
+        error('### cannot update an object with one having a different data type');
+      end
+        
+      % call recursively to insert the data object info
+      id = utils.jmysql.updateObjMetadataV1(conn, obj.data, dataid);
+
+      % update ao description
+      stmt = conn.prepareStatement(...
+        'UPDATE ao SET description=? WHERE obj_id = ?');
+      desc = obj.description;
+      if length(desc)>65535
+        warning('Object description length exceeded. Truncating to 65535 characters');
+        desc = desc(1:65535);
+      end
+      stmt.setObject(1, desc);
+      stmt.setObject(2, objid);
+      stmt.execute();
+      stmt.close();
+
+    case 'cdata'
+
+      stmt = conn.prepareStatement(...
+        'UPDATE cdata SET yunits=? WHERE id = ?');
+      stmt.setObject(1, char(obj.yunits));
+      stmt.setObject(2, objid);
+      stmt.execute();
+      stmt.close();
+
+    case 'fsdata'
+
+      % possible bad entries
+      fs = obj.fs;
+      if ~isfinite(fs)
+        fs = [];
+      end
+        
+      stmt = conn.prepareStatement(...
+        'UPDATE fsdata SET xunits=?, yunits=?, fs=? WHERE id = ?');
+      stmt.setObject(1, char(obj.xunits));
+      stmt.setObject(2, char(obj.yunits));
+      stmt.setObject(3, fs);
+      stmt.setObject(4, objid);      
+      stmt.execute();
+      stmt.close();
+
+    case 'tsdata'
+
+      stmt = conn.prepareStatement(...
+        'UPDATE tsdata SET xunits=?, yunits=?, fs=?, t0=?, nsecs=? WHERE id = ?');
+      stmt.setObject(1, char(obj.xunits));
+      stmt.setObject(2, char(obj.yunits));
+      stmt.setObject(3, obj.fs);
+      stmt.setObject(4, format(obj.t0, 'yyyy-mm-dd HH:MM:SS', 'UTC'));
+      stmt.setObject(5, obj.nsecs);
+      stmt.setObject(6, objid);      
+      stmt.execute();
+      stmt.close();
+
+    case 'xydata'
+
+      stmt = conn.prepareStatement(...
+        'UPDATE xydata SET xunits=?, yunits=? WHERE id = ?');
+      stmt.setObject(1, char(obj.xunits));
+      stmt.setObject(2, char(obj.yunits));
+      stmt.setObject(3, objid);      
+      stmt.execute();
+      stmt.close();
+
+    case 'mfir'
+
+      stmt = conn.prepareStatement(...
+        'UPDATE mfir SET in_file=?, fs=? WHERE obj_id = ?');
+      stmt.setObject(1, obj.infile);
+      stmt.setObject(2, obj.fs);
+      stmt.setObject(3, objid);
+      stmt.execute();
+      stmt.close();
+
+    case 'miir'
+
+      stmt = conn.prepareStatement(...
+        'UPDATE miir SET in_file=?, fs=? WHERE obj_id = ?');
+      stmt.setObject(1, obj.infile);
+      stmt.setObject(2, obj.fs);
+      stmt.setObject(3, objid);      
+      stmt.execute();
+      stmt.close();
+
+    otherwise
+      utils.helper.msg(msg.PROC2, 'no meta data table for %s object', cl);
+
+  end
+
+end