void setAttribute(string attribute, gobject.value.Value value = null, glib.types.DestroyNotify destroy = null)Set the value associated to a named attribute. The attribute string is 'stolen' by this method, and the memory it uses will be freed using the destroy function when no longer needed (if destroy is null, then the string will not be freed at all).
Attributes can have any name, but Libgda proposes some default names, see <link linkend="libgda-40-Attributes-manager.synopsis">this section</link>.
If there is already an attribute named attribute set, then its value is replaced with the new value (value is copied), except if value is null, in which case the attribute is removed.
For example one would use it as:
gda_column_set_attribute (holder, g_strdup (my_attribute), g_free, my_value); gda_column_set_attribute (holder, GDA_ATTRIBUTE_NAME, NULL, my_value);
does it modify the table definition of the tables used by a SELECT statement is the model was created from a SELECT statement).
attribute | attribute name as a static string |
value | a #GValue, or null |
destroy | a function to be called when attribute is not needed anymore, or null |