X-Git-Url: http://git.indexdata.com/?p=idzebra-moved-to-github.git;a=blobdiff_plain;f=rset%2Frsisam.c;h=278573f27378bb6dbe5c1c174b39338b4c30ddef;hp=56a432c329cd43b38b9ca7043b8b06f02d4726e1;hb=896c0427df9d8eff5de6a1735dcd992e067df844;hpb=affd7e4168d70b94e015b777748b7eca1cd00ec0 diff --git a/rset/rsisam.c b/rset/rsisam.c index 56a432c..278573f 100644 --- a/rset/rsisam.c +++ b/rset/rsisam.c @@ -1,32 +1,43 @@ -/* - * Copyright (C) 1994, Index Data I/S - * All rights reserved. - * Sebastian Hammer, Adam Dickmeiss - * - * $Log: rsisam.c,v $ - * Revision 1.1 1994-11-04 13:21:29 quinn - * Working. - * - */ - -/* TODO: Memory management */ +/* $Id: rsisam.c,v 1.23 2002-08-02 19:26:57 adam Exp $ + Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002 + Index Data Aps +This file is part of the Zebra server. + +Zebra is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 2, or (at your option) any later +version. + +Zebra is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with Zebra; see the file LICENSE.zebra. If not, write to the +Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. +*/ + + +#include +#include +#include #include -#include - -rset_control *r_create(const struct rset_control *sel, void *parms); -static int r_open(rset_control *ct, int wflag); -static void r_close(rset_control *ct); -static void r_delete(rset_control *ct); -static void r_rewind(rset_control *ct); -static int r_count(rset_control *ct); -static int r_read(); -static int r_write(); - -static const rset_control control = + +static void *r_create(RSET ct, const struct rset_control *sel, void *parms); +static RSFD r_open (RSET ct, int flag); +static void r_close (RSFD rfd); +static void r_delete (RSET ct); +static void r_rewind (RSFD rfd); +static int r_count (RSET ct); +static int r_read (RSFD rfd, void *buf, int *term_index); +static int r_write (RSFD rfd, const void *buf); + +static const struct rset_control control = { - "ISAM set type", - 0, + "isam", r_create, r_open, r_close, @@ -34,54 +45,109 @@ static const rset_control control = r_rewind, r_count, r_read, - r_write + r_write, }; -const rset_control *rset_kind_isam = &control; +const struct rset_control *rset_kind_isam = &control; + +struct rset_ispt_info { + ISPT pt; + struct rset_ispt_info *next; + struct rset_isam_info *info; +}; + +struct rset_isam_info { + ISAM is; + ISAM_P pos; + struct rset_ispt_info *ispt_list; +}; -rset_control *r_create(const struct rset_control *sel, void *parms) +static void *r_create(RSET ct, const struct rset_control *sel, void *parms) { - rset_control *newct; - rset_isam_parms *pt = parms; + rset_isam_parms *pt = (rset_isam_parms *) parms; + struct rset_isam_info *info; - newct = xmalloc(sizeof(*newct)); - if (!(newct->buf = (char*) is_position(pt->is, pt->pos))) - return 0; - return newct; + ct->flags |= RSET_FLAG_VOLATILE; + info = (struct rset_isam_info *) xmalloc (sizeof(struct rset_isam_info)); + info->is = pt->is; + info->pos = pt->pos; + info->ispt_list = NULL; + + ct->no_rset_terms = 1; + ct->rset_terms = (RSET_TERM *) xmalloc (sizeof(*ct->rset_terms)); + ct->rset_terms[0] = pt->rset_term; + return info; } -static int r_open(rset_control *ct, int wflag) +RSFD r_open (RSET ct, int flag) { - r_rewind(ct); - return 0; + struct rset_isam_info *info = (struct rset_isam_info *) ct->buf; + struct rset_ispt_info *ptinfo; + + logf (LOG_DEBUG, "risam_open"); + if (flag & RSETF_WRITE) + { + logf (LOG_FATAL, "ISAM set type is read-only"); + return NULL; + } + ptinfo = (struct rset_ispt_info *) xmalloc (sizeof(*ptinfo)); + ptinfo->next = info->ispt_list; + info->ispt_list = ptinfo; + ptinfo->pt = is_position (info->is, info->pos); + ptinfo->info = info; + + if (ct->rset_terms[0]->nn < 0) + ct->rset_terms[0]->nn = is_numkeys (ptinfo->pt); + return ptinfo; } -static void r_close(rset_control *ct) +static void r_close (RSFD rfd) { - /* NOP */ + struct rset_isam_info *info = ((struct rset_ispt_info*) rfd)->info; + struct rset_ispt_info **ptinfop; + + for (ptinfop = &info->ispt_list; *ptinfop; ptinfop = &(*ptinfop)->next) + if (*ptinfop == rfd) + { + is_pt_free ((*ptinfop)->pt); + *ptinfop = (*ptinfop)->next; + xfree (rfd); + return; + } + logf (LOG_FATAL, "r_close but no rfd match!"); + assert (0); } -static void r_delete(rset_control *ct) +static void r_delete (RSET ct) { - is_pt_free((ISPT) ct->buf); - xfree(ct); + struct rset_isam_info *info = (struct rset_isam_info *) ct->buf; + + logf (LOG_DEBUG, "rsisam_delete"); + assert (info->ispt_list == NULL); + rset_term_destroy (ct->rset_terms[0]); + xfree (ct->rset_terms); + xfree (info); } -static void r_rewind(rset_control *ct) -{ - is_rewind((ISPT) ct->buf); +static void r_rewind (RSFD rfd) +{ + logf (LOG_DEBUG, "rsisam_rewind"); + is_rewind( ((struct rset_ispt_info*) rfd)->pt); } -static int r_count(rset_control *ct) -{return 0;} +static int r_count (RSET ct) +{ + return 0; +} -static int r_read(rset_control *ct, void *buf) +static int r_read (RSFD rfd, void *buf, int *term_index) { - return is_readkey((ISPT) ct->buf, buf); + *term_index = 0; + return is_readkey( ((struct rset_ispt_info*) rfd)->pt, buf); } -static int r_write(rset_control *ct, const void *buf) +static int r_write (RSFD rfd, const void *buf) { - log(LOG_FATAL, "ISAM set type is read-only"); + logf (LOG_FATAL, "ISAM set type is read-only"); return -1; }