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Man Pages


Manual Reference Pages  -  PQREGISTERSUBCLASSES (3)

NAME

PQregisterSubClasses - Registers a type aliases or sub-classes.

CONTENTS

Synopsis
Deprecated
Description
Return Value
Examples
Author
Reporting Bugs
Copyright
See Also

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)

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libpqtypes PQREGISTERSUBCLASSES (3) 2011

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