1 files changed, 27 insertions, 9 deletions
diff --git a/server/src/luaquerymapper.h b/server/src/luaquerymapper.h
index 4648606..e8a25f8 100644
--- a/server/src/luaquerymapper.h
+++ b/server/src/luaquerymapper.h
@@ -33,7 +33,9 @@
 #include <lauxlib.h>
 
 // For class Value
-#include "database.h"
+#include "dbtypes.h"
+
+#include "exception.h"
 
 /**
  * The LUAQueryMapper class takes the result of an external data query and
@@ -41,23 +43,39 @@
  */
 class LUAQueryMapper {
 public:
-  LUAQueryMapper();
+  /**
+   * Constructor.
+   * Initialises the LUA library, and opens a LUA instance.
+   * Throws an exception if any of these things fail.
+   */
+  LUAQueryMapper() throw(Exception);
   ~LUAQueryMapper();
 
   /**
    * Applies the mapping program to the result-namespace, and returns the
-   * resulting value.
+   * resulting value. The map must return 3 values; value (a string), timestamp
+   * (an integer) and the source (string).
+   * If the program fails to load, fails to run, returns wrong number of values,
+   * or the wrong types, it will thorw an exception.
+   * @param mapper A std::string containing the mapping program.
+   * @return A Value object containing the three result values.
    */
-  Value map(const std::string &mapper);
-
-  void error(std::string message);
-
-  void addQueryResult(QueryResult &result);
+  Value map(const std::string &mapper) throw(Exception);
+ 
+  /**
+   * Add a result to be included in the mapper namespace.
+   * If in some way the generated values fail (illegal names for example) an exception
+   * will be thrown.
+   * @param result The QueryResult object containing the values to add to the
+   * namespace.
+   */
+  void addQueryResult(QueryResult &result) throw(Exception);
 
 private:
+  void error(std::string message) throw(Exception);
+
   lua_State *L;
   int clean_top;
-
 };