fix handling of F and O type dbf fields and sync handling for attribute_descriptors - refs #1614 and closes #1976

CHANGELOG.md

@@ -8,6 +8,8 @@ For a complete change history, see the git log.
 
 ## Future
 
+- Fixed regression in handling `F` type dbf fields, introduced in v2.2.0.
+
 - Added the ability to create a mapnik Feature from a geojson feature with `mapnik.Feature.from_geojson` in python.
 
 - Added to python bindings: `has_tiff`, `has_png`, `has_webp`, `has_proj4`, `has_svg_renderer`, and `has_grid_renderer`

plugins/input/shape/dbfile.cpp

@@ -141,6 +141,7 @@ void dbf_file::add_attribute(int col, mapnik::transcoder const& tr, mapnik::feat
     {
         std::string const& name=fields_[col].name_;
 
+        // NOTE: ensure types handled here are matched in shape_datasource.cpp
         switch (fields_[col].type_)
         {
         case 'C':
@@ -166,8 +167,9 @@ void dbf_file::add_attribute(int col, mapnik::transcoder const& tr, mapnik::feat
             }
             break;
         }
-        case 'N':
-        case 'F':
+        case 'N': // numeric
+        case 'O': // double
+        case 'F': // float
         {
 
             if (record_[fields_[col].offset_] == '*')

plugins/input/shape/shape_datasource.cpp

@@ -105,15 +105,13 @@ shape_datasource::shape_datasource(const parameters &params)
             switch (fd.type_)
             {
             case 'C': // character
-            case 'D': // Date
-            case 'M': // Memo, a string
-            case '@': // timestamp
+            case 'D': // date
                 desc_.add_descriptor(attribute_descriptor(fld_name, String));
                 break;
             case 'L': // logical
                 desc_.add_descriptor(attribute_descriptor(fld_name, Boolean));
                 break;
-            case 'N':
+            case 'N': // numeric
             case 'O': // double
             case 'F': // float
             {
@@ -131,7 +129,11 @@ shape_datasource::shape_datasource(const parameters &params)
                 // I - long
                 // G - ole
                 // + - autoincrement
-                MAPNIK_LOG_WARN(shape) << "shape_datasource: Unknown type=" << fd.type_;
+                // @ - timestamp
+                // B - binary
+                // l - long
+                // M - memo
+                MAPNIK_LOG_ERROR(shape) << "shape_datasource: Unknown type=" << fd.type_;
                 break;
             }
         }