mirror of
https://github.com/psycopg/psycopg2.git
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91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* cursor_int.c - code used by the cursor object
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*
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* Copyright (C) 2003-2010 Federico Di Gregorio <fog@debian.org>
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*
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* This file is part of psycopg.
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*
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* psycopg2 is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link this program with the OpenSSL library (or with
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* modified versions of OpenSSL that use the same license as OpenSSL),
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* and distribute linked combinations including the two.
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*
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* You must obey the GNU Lesser General Public License in all respects for
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* all of the code used other than OpenSSL.
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*
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* psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*/
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#define PSYCOPG_MODULE
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#include "psycopg/psycopg.h"
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#include "psycopg/cursor.h"
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#include "psycopg/pqpath.h"
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#include "psycopg/typecast.h"
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/* curs_get_cast - return the type caster for an oid.
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*
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* Return the most specific type caster, from cursor to connection to global.
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* If no type caster is found, return the default one.
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*
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* Return a borrowed reference.
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*/
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BORROWED PyObject *
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curs_get_cast(cursorObject *self, PyObject *oid)
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{
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PyObject *cast;
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/* cursor lookup */
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if (self->string_types != NULL && self->string_types != Py_None) {
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cast = PyDict_GetItem(self->string_types, oid);
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Dprintf("curs_get_cast: per-cursor dict: %p", cast);
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if (cast) { return cast; }
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}
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/* connection lookup */
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cast = PyDict_GetItem(self->conn->string_types, oid);
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Dprintf("curs_get_cast: per-connection dict: %p", cast);
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if (cast) { return cast; }
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/* global lookup */
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cast = PyDict_GetItem(psyco_types, oid);
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Dprintf("curs_get_cast: global dict: %p", cast);
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if (cast) { return cast; }
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/* fallback */
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return psyco_default_cast;
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}
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#include <string.h>
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/* curs_reset - reset the cursor to a clean state */
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void
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curs_reset(cursorObject *self)
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{
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PyObject *tmp;
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/* initialize some variables to default values */
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self->notuples = 1;
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self->rowcount = -1;
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self->row = 0;
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tmp = self->description;
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Py_INCREF(Py_None);
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self->description = Py_None;
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Py_XDECREF(tmp);
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tmp = self->casts;
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self->casts = NULL;
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Py_XDECREF(tmp);
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}
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