Added a function to access directly a given command, with protection.

include/dynamic-graph/entity.h

@@ -48,6 +48,7 @@ namespace dynamicgraph
   {
   public:
     typedef std::map< std::string,SignalBase<int>* > SignalMap;
+    typedef std::map<const std::string, command::Command*> CommandMap_t;
 
     static const std::string CLASS_NAME;
 
@@ -87,10 +88,8 @@ namespace dynamicgraph
     }
 
     virtual const std::string& getCommandList () const;
-
-    /// Return the list of command objects
-    virtual std::map<const std::string, command::Command*>
-      getNewStyleCommandMap();
+    virtual CommandMap_t getNewStyleCommandMap();
+    command::Command* getNewStyleCommand( const std::string& cmdName );
 
     virtual SignalMap getSignalMap() const;
   protected:
@@ -107,7 +106,7 @@ namespace dynamicgraph
 
     std::string name;
     SignalMap signalMap;
-    std::map<const std::string, command::Command*> commandMap;
+    CommandMap_t commandMap;
   };
 
   DYNAMIC_GRAPH_DLLAPI std::ostream&

src/dgraph/entity.cpp

@@ -284,15 +284,29 @@ addCommand(const std::string& inName, Command* command)
 {
   if (commandMap.count(inName) != 0) {
     DG_THROW ExceptionFactory(ExceptionFactory::OBJECT_CONFLICT,
-			      "Command " + inName + 
+			      "Command " + inName +
 			      " already registered in Entity.");
   }
   std::pair<const std::string, Command*> item(inName, command);
   commandMap.insert(item);
 }
 
+/// Return the list of command objects
 std::map<const std::string, Command*> Entity::
 getNewStyleCommandMap()
 {
   return commandMap;
 }
+
+Command* Entity::
+getNewStyleCommand( const std::string& commandName )
+{
+  if (commandMap.count(commandName) != 1)
+    {
+      DG_THROW ExceptionFactory(ExceptionFactory::UNREFERED_FUNCTION,
+				"Command <" + commandName +
+				"> is not registered in Entity.");
+    }
+  return commandMap[commandName];
+}
+