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)