Functions don't work with NUMERIC type

Discovered a bug relating to functions taking a numeric type as an argument:
Example:

select sum(count) from testtable;

results in:
ERROR: Can not prepare request: Unable To Determine Type For (SQLEXPRESSION):sum( "testtable"."count")

I suspect this error also relates to max and various other functions.

This was found to be related to a type getTypeString issue for NUMERIC, and the following was applied to fix the problem:

[lpmike@dredd stado]$ svn diff src/org/postgresql/stado/parser/ExpressionType.java
Index: src/org/postgresql/stado/parser/ExpressionType.java
===================================================================
--- src/org/postgresql/stado/parser/ExpressionType.java (revision 6482)
+++ src/org/postgresql/stado/parser/ExpressionType.java (working copy)
@@ -334,7 +334,6 @@
      */
     public String getTypeString() {
         String typeString = "";
-
         HashMap<String, String> params = new HashMap<String, String>();
         params.put("length", new String(length + ""));
         params.put("scale", new String(scale + ""));
@@ -394,9 +393,19 @@
             break;

         case java.sql.Types.NUMERIC:
- if (scale != 0) {
+ if (scale != 0)
+ {
                 typeString = TypeConstants.NUMERIC_TEMPLATE;
             }
+// mike added 2 more cases to NUMERIC template
+ else if (precision > 0)
+ {
+ typeString = TypeConstants.NUMERIC_TEMPLATE_WITHOUT_SCALE;
+ }
+ else
+ {
+ typeString = TypeConstants.NUMERIC_TEMPLATE_WITHOUT_PRECISION;
+ }
             typeString = ParseCmdLine.substitute(typeString, params);
             break;

Hope this helps :)

Mike