Columns

- Refactored column objects to contain a ::validate method, for the
  validation of incoming data.
- Context.columns is now a vector of one of each column object,
  indexed by attribute name, for validation purposes.

src/columns/ColStatus.cpp

@@ -37,6 +37,7 @@ extern Context context;
 ////////////////////////////////////////////////////////////////////////////////
 ColumnStatus::ColumnStatus ()
 {
+  _name  = "status";
   _type  = "string";
   _style = "default";
   _label = STRING_COLUMN_LABEL_STATUS;
@@ -47,6 +48,12 @@ ColumnStatus::~ColumnStatus ()
 {
 }
 
+////////////////////////////////////////////////////////////////////////////////
+bool ColumnStatus::validate (std::string& value)
+{
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Overriden so that style <----> label are linked.
 // Note that you can not determine which gets called first.
@@ -81,7 +88,7 @@ void ColumnStatus::measure (Task& task, int& minimum, int& maximum)
   else if (_style == "short")
     minimum = maximum = 1;
   else
-    throw format (STRING_COLUMN_BAD_FORMAT, "status.", _style);
+    throw format (STRING_COLUMN_BAD_FORMAT, _name, _style);
 }
 
 ////////////////////////////////////////////////////////////////////////////////