X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fmetadata%2FmetadataConstraints.ml;h=d7192bd7e75e12c65f1c0d12922ec6e5e3f31673;hb=7bbac9e5441f5fc78a30e03ca26ec2a21f5e8286;hp=6c373f18036677cf454d256fd79e264f2161a49e;hpb=06b128f1107fd579a696b83b2f8255f83ab29a92;p=helm.git

diff --git a/components/metadata/metadataConstraints.ml b/components/metadata/metadataConstraints.ml
index 6c373f180..d7192bd7e 100644
--- a/components/metadata/metadataConstraints.ml
+++ b/components/metadata/metadataConstraints.ml
@@ -626,8 +626,10 @@ let sigmatch ~(dbd:HMysql.dbd) ?(facts=false) ?(where = `Conclusion)
       let subsets = power_upto just_factor constants in
       (* let _ = prerr_endline (("subsets: ")^
 	 (string_of_int (List.length subsets))) in *)
-      let types_no = List.length types in
-      List.map (function (n,l) -> (n+types_no,types@l)) subsets
+      let types_no = List.length types in 
+	if types_no > 0 then  
+          List.map (function (n,l) -> (n+types_no,types@l)) subsets
+	else subsets
     in
     prerr_endline ("critical_value exceded..." ^ string_of_int constants_no);
     let all_constants = 
@@ -636,14 +638,16 @@ let sigmatch ~(dbd:HMysql.dbd) ?(facts=false) ?(where = `Conclusion)
     in
      compute_with_only ~dbd ~where main subsets all_constants
   else
+    (prerr_endline ("all subsets..." ^ string_of_int constants_no);
     let subsets = 
       let subsets = power constants in
       let types_no = List.length types in
        if types_no > 0 then  
         (0,[]) :: List.map (function (n,l) -> (n+types_no,types@l)) subsets
        else subsets
-      in
-       compute_exactly ~dbd ~facts ~where main subsets
+    in
+       prerr_endline "fine1";
+       compute_exactly ~dbd ~facts ~where main subsets)
 
   (* match query wrappers *)