GdaDataHandler Interface which provides data handling capabilities Because data types vary a lot from a DBMS to another, the #GdaDataHandler interface helps designing modules which can handle very specific pieces of data through plugins. Each object which imlements the #GdaDataHandler interface is expected to handle a subset of the possible libgda defined data types. The #GdaDataHandler object can convert a #GdaValue to and from both SQL and 'STR'. The SQL representation of a value is the actual string which would be used in an SQL statement (for example a string's SQL representation is surrounded by quotes such as 'that\'s a string'). The 'STR' representation is a user friendly representation of a value (and the previous example would simply be: that's a string). Only one object which implements this interface is needed for any given data type, and it mainly contains some methods to manage values (as #GdaValue structures). The #GnomeDbDataEntry interface is complementary to this one since it it implemented by widgets where the user can enter or modify some data. For a given data type, the #GdaConnection (found in the correspoding #GdaDict object) will provide a reference to a valid #GdaDataHandler to handle values of that data type. Libmergeant provides some default #GdaDataHandler objects for the most common data types (strings with a #GdaHandlerString, booleans with a #GdaHandlerBoolean, etc) and some other as plugins. The #GdaDictType class an the #GnomeDbDataEntry interface. @dh: @value: @Returns: @dh: @value: @Returns: @dh: @sql: @type: @Returns: @dh: @str: @type: @Returns: @dh: @type: @Returns: @dh: @Returns: @dh: @type: @Returns: @dh: @index: @Returns: @dh: @Returns: