PQregisterSubClasses(3) libpqtypes Manual PQregisterSubClasses(3)NAMEPQregisterSubClasses - Registers a type aliases or sub-classes.
SYNOPSIS
#include <libpqtypes.h>
int PQregisterSubClasses(PGconn *conn, PGregisterType *types,
int count);
DEPRECATED
THIS FUNCTION IS DEPRECATED. New applications should use PQregister‐
Types. This function is now a wrapper to PQregisterTypes.
DESCRIPTION
The PQregisterSubClasses() function allows an application to register
an alias or sub-class of another type.
The types argument is an array containing count sub class types to reg‐
ister. The typname member of the PGregisterType structure must specify
an inheritence relationship: ex. "myint=int4" where myint inherits from
int4. The ´=´ is called the inheritence operator. If both typput and
typget members of the PGregisterType structure are NULL, the type at
that element will behave identically to the type it is inheriting from;
an alias. Otherwise, the base type's put and/or get routines will be
overridden.
NOTE: The typname member of the PGregisterType structure can optionally
contain the type's schema: schema.typname.
WARNING: PQparamCreate is only aware of types that have already been
registered. If you need to put a type into a param, make sure it is
first registered.
RETURN VALUE
On success, a non-zero value is returned. On error, zero is returned
and PQgeterror(3) will contain an error message.
EXAMPLES
None.
AUTHOR
A contribution of eSilo, LLC. for the PostgreSQL Database Management
System. Written by Andrew Chernow and Merlin Moncure.
REPORTING BUGS
Report bugs to <libpqtypes@esilo.com>.
COPYRIGHT
Copyright (c) 2011 eSilo, LLC. All rights reserved.
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
SEE ALSOpqt-handlers(3), PQputf(3), PQgetf(3)libpqtypes 2011 PQregisterSubClasses(3)
