Start of DBMS support

[hcoop/domtool2.git] / src / dbms.sml

diff --git a/src/dbms.sml b/src/dbms.sml
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+(* HCoop Domtool (http://hcoop.sourceforge.net/)
+ * Copyright (c) 2006, Adam Chlipala
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *)
+
+(* DBMS management code *)
+
+structure Dbms :> DBMS = struct
+
+open DataStructures
+
+type handler = {adduser : string -> string option}
+              
+val dbmses : handler StringMap.map ref = ref StringMap.empty
+                 
+fun register (name, handler) =
+    dbmses := StringMap.insert (!dbmses, name, handler)
+
+fun lookup name = StringMap.find (!dbmses, name)
+
+end