NAME

       PQregisterSubClasses - 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 PQregisterTypes.  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 register.  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 ALSO

       pqt-handlers(3), PQputf(3), PQgetf(3)

libpqtypes                                            2011                               PQregisterSubClasses(3)