[Command] Implement setter command for int64_t.

include/dynamic-graph/command-setter.t.cpp

@@ -120,6 +120,40 @@ Value Setter<E, int>::doExecute() {
   return Value();
 }
 
+//
+// Template specialization: int64_t
+//
+template <class E>
+class Setter<E, int64_t> : public Command {
+ public:
+  /// Pointer to method that sets parameter of type int64_t
+  typedef void (E::*SetterMethod)(const int64_t &);
+  /// Constructor
+  Setter(E &entity, SetterMethod setterMethod, const std::string &docString);
+
+ protected:
+  virtual Value doExecute();
+
+ private:
+  SetterMethod setterMethod_;
+};  // Class Setter
+
+template <class E>
+Setter<E, int64_t>::Setter(E &entity, SetterMethod setterMethod,
+                       const std::string &docString)
+    : Command(entity, boost::assign::list_of(Value::LONGINT), docString),
+      setterMethod_(setterMethod) {}
+
+template <class E>
+Value Setter<E, int64_t>::doExecute() {
+  const std::vector<Value> &values = getParameterValues();
+  // Get parameter
+  int64_t value = values[0].value();
+  E &entity = static_cast<E &>(owner());
+  (entity.*setterMethod_)(value);
+  return Value();
+}
+
 //
 // Template specialization: float
 //