Start generic type matching

1 files changed, 16 insertions, 5 deletions

diff --git a/src/duckdb/Result.zig b/src/duckdb/Result.zig
index b49f704..2b5b992 100644
--- a/src/duckdb/Result.zig
+++ b/src/duckdb/Result.zig
@@ -22,6 +22,21 @@ pub fn Result(comptime T: type) type{
                 return error.DuckDBError;
             }
             self.fetchDataChunk();
+
+            // Get column vectors
+            switch (@typeInfo(T)) {
+                .Struct => |v| {
+                    const column_count = v.fields.len;
+                    var columns : [column_count]c.duckdb_vector = undefined;
+                    for (columns, 0..) |_, i| {
+                        columns[i] = c.duckdb_data_chunk_get_vector(self._chunk, i);
+                    }
+                    std.debug.print("{any}", .{columns});
+                },
+                .Void => {},
+                else => @compileError("Expecting struct or void in query result type"),
+            }
+
             return self;
         }
         pub fn deinit(self: *Self) void {
@@ -59,12 +74,8 @@ pub fn Result(comptime T: type) type{
         /// We need some comptime magic to create the output structures from
         /// the T.
         pub fn next(self: *Self) T{
-            _ = self;
             const result: T = undefined;
-            switch (@typeInfo(T)) {
-                .Struct => std.debug.print("GOOOD: ", .{}),
-                else => null,
-            }
+            _ = self;
             return result;
         }
     };