-/*
- * Copyright (C) 1994-1999, Index Data
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rset.c,v $
- * Revision 1.13 1999-02-02 14:51:33 adam
- * Updated WIN32 code specific sections. Changed header.
- *
- * Revision 1.12 1998/04/26 10:56:57 adam
- * Added include of string.h.
- *
- * Revision 1.11 1998/03/05 08:36:28 adam
- * New result set model.
- *
- * Revision 1.10 1998/02/10 11:56:46 adam
- * Implemented rset_dup.
- *
- * Revision 1.9 1996/10/29 13:55:21 adam
- * Include of zebrautl.h instead of alexutil.h.
- *
- * Revision 1.8 1995/12/11 09:15:23 adam
- * New set types: sand/sor/snot - ranked versions of and/or/not in
- * ranked/semi-ranked result sets.
- * Note: the snot not finished yet.
- * New rset member: flag.
- * Bug fix: r_delete in rsrel.c did free bad memory block.
- *
- * Revision 1.7 1995/10/12 12:41:56 adam
- * Private info (buf) moved from struct rset_control to struct rset.
- * Bug fixes in relevance.
- *
- * Revision 1.6 1995/09/08 14:52:41 adam
- * Work on relevance feedback.
- *
- * Revision 1.5 1995/09/07 13:58:43 adam
- * New parameter: result-set file descriptor (RSFD) to support multiple
- * positions within the same result-set.
- * Boolean operators: and, or, not implemented.
- *
- * Revision 1.4 1995/09/06 16:11:56 adam
- * More work on boolean sets.
- *
- * Revision 1.3 1995/09/04 15:20:39 adam
- * More work on temp sets. is_open member removed.
- *
- * Revision 1.2 1995/09/04 12:33:56 adam
- * Various cleanup. YAZ util used instead.
- *
- * Revision 1.1 1994/11/04 13:21:28 quinn
- * Working.
- *
- */
+/* $Id: rset.c,v 1.42 2005-01-15 19:38:34 adam Exp $
+ Copyright (C) 1995-2005
+ 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 <stdio.h>
#include <string.h>
#include <zebrautl.h>
-
+#include <assert.h>
+#include <yaz/nmem.h>
#include <rset.h>
-RSET rset_create(const struct rset_control *sel, void *parms)
+static int log_level=0;
+static int log_level_initialized=0;
+
+/**
+ * creates an rfd. Either allocates a new one, in which case the priv
+ * pointer is null, and will have to be filled in, or picks up one
+ * from the freelist, in which case the priv is already allocated,
+ * and presumably everything that hangs from it as well
+ */
+
+RSFD rfd_create_base(RSET rs)
{
- RSET rnew;
- int i;
+ RSFD rnew=rs->free_list;
- logf (LOG_DEBUG, "rs_create(%s)", sel->desc);
- rnew = xmalloc(sizeof(*rnew));
+ if (!log_level_initialized)
+ {
+ log_level=yaz_log_module_level("rset");
+ log_level_initialized=1;
+ }
+
+ if (rnew)
+ {
+ rs->free_list=rnew->next;
+ assert(rnew->rset==rs);
+ yaz_log(log_level,"rfd-create_base (fl): rfd=%p rs=%p fl=%p priv=%p",
+ rnew, rs, rs->free_list, rnew->priv);
+ } else {
+ rnew=nmem_malloc(rs->nmem, sizeof(*rnew));
+ rnew->priv=NULL;
+ rnew->rset=rs;
+ yaz_log(log_level,"rfd_create_base (new): rfd=%p rs=%p fl=%p priv=%p",
+ rnew, rs, rs->free_list, rnew->priv);
+ }
+ rnew->next=NULL; /* not part of any (free?) list */
+ return rnew;
+}
+
+/* puts an rfd into the freelist of the rset. Only when the rset gets */
+/* deleted, will all the nmem disappear */
+void rfd_delete_base(RSFD rfd)
+{
+ RSET rs=rfd->rset;
+ yaz_log(log_level,"rfd_delete_base: rfd=%p rs=%p priv=%p fl=%p",
+ rfd, rs, rfd->priv, rs->free_list);
+ assert(NULL == rfd->next);
+ rfd->next=rs->free_list;
+ rs->free_list=rfd;
+}
+
+
+RSET rset_create_base(const struct rset_control *sel,
+ NMEM nmem, const struct key_control *kcontrol,
+ int scope, TERMID term)
+{
+ RSET rnew;
+ NMEM M;
+ /* assert(nmem); */ /* can not yet be used, api/t4 fails */
+ if (nmem)
+ M=nmem;
+ else
+ M=nmem_create();
+ rnew = (RSET) nmem_malloc(M,sizeof(*rnew));
+ yaz_log (log_level, "rs_create(%s) rs=%p (nm=%p)", sel->desc, rnew, nmem);
+ rnew->nmem=M;
+ if (nmem)
+ rnew->my_nmem=0;
+ else
+ rnew->my_nmem=1;
rnew->control = sel;
- rnew->flags = 0;
- rnew->count = 1;
- rnew->rset_terms = NULL;
- rnew->no_rset_terms = 0;
- rnew->buf = (*sel->f_create)(rnew, sel, parms);
- logf (LOG_DEBUG, "no_rset_terms: %d", rnew->no_rset_terms);
- for (i = 0; i<rnew->no_rset_terms; i++)
- logf (LOG_DEBUG, " %s", rnew->rset_terms[i]->name);
+ rnew->count = 1; /* refcount! */
+ rnew->priv = 0;
+ rnew->free_list=NULL;
+ rnew->keycontrol=kcontrol;
+ rnew->scope=scope;
+ rnew->term=term;
+ if (term)
+ term->rset=rnew;
return rnew;
}
void rset_delete (RSET rs)
{
(rs->count)--;
+ yaz_log(log_level,"rs_delete(%s), rs=%p, count=%d",
+ rs->control->desc, rs, rs->count);
if (!rs->count)
{
- (*rs->control->f_delete)(rs);
- xfree(rs);
+ (*rs->control->f_delete)(rs);
+ if (rs->my_nmem)
+ nmem_destroy(rs->nmem);
}
}
RSET rset_dup (RSET rs)
{
(rs->count)++;
+ yaz_log(log_level,"rs_dup(%s), rs=%p, count=%d",
+ rs->control->desc, rs, rs->count);
return rs;
}
-RSET_TERM *rset_terms(RSET rs, int *no)
+int rset_default_forward(RSFD rfd, void *buf, TERMID *term,
+ const void *untilbuf)
{
- *no = rs->no_rset_terms;
- return rs->rset_terms;
+ int more=1;
+ int cmp=rfd->rset->scope;
+ if (log_level)
+ {
+ yaz_log (log_level, "rset_default_forward starting '%s' (ct=%p rfd=%p)",
+ rfd->rset->control->desc, rfd->rset, rfd);
+ /* key_logdump(log_level, untilbuf); */
+ }
+ while ( (cmp>=rfd->rset->scope) && (more))
+ {
+ if (log_level) /* time-critical, check first */
+ yaz_log(log_level,"rset_default_forward looping m=%d c=%d",more,cmp);
+ more=rset_read(rfd, buf, term);
+ if (more)
+ cmp=(rfd->rset->keycontrol->cmp)(untilbuf,buf);
+/* if (more)
+ key_logdump(log_level,buf); */
+ }
+ if (log_level)
+ yaz_log (log_level, "rset_default_forward exiting m=%d c=%d",more,cmp);
+
+ return more;
+}
+
+/**
+ * rset_count uses rset_pos to get the total and returns that.
+ * This is ok for rsisamb/c/s, and for some other rsets, but in case of
+ * booleans etc it will give bad estimate, as nothing has been read
+ * from that rset
+ */
+zint rset_count(RSET rs)
+{
+ double cur,tot;
+ RSFD rfd=rset_open(rs,0);
+ rset_pos(rfd,&cur,&tot);
+ rset_close(rfd);
+ return (zint)(tot);
+}
+
+
+/** rset_get_no_terms is a getterms function for those that don't have any */
+void rset_get_no_terms(RSET ct, TERMID *terms, int maxterms, int *curterm)
+{
+ return;
}
-RSET_TERM rset_term_create (const char *name, int length, const char *flags)
+/* rset_get_one_term gets that one term from an rset. Used by rsisamX */
+void rset_get_one_term(RSET ct,TERMID *terms,int maxterms,int *curterm)
{
- RSET_TERM t = xmalloc (sizeof(*t));
+ if (ct->term)
+ {
+ if (*curterm < maxterms)
+ terms[*curterm]=ct->term;
+ (*curterm)++;
+ }
+}
+
+
+TERMID rset_term_create (const char *name, int length, const char *flags,
+ int type, NMEM nmem)
+
+{
+ TERMID t;
+ yaz_log (log_level, "term_create '%s' %d f=%s type=%d nmem=%p",
+ name, length, flags, type, nmem);
+ t= (TERMID) nmem_malloc (nmem, sizeof(*t));
if (!name)
- t->name = NULL;
+ t->name = NULL;
else if (length == -1)
- t->name = xstrdup (name);
+ t->name = nmem_strdup(nmem,name);
else
{
- t->name = xmalloc (length+1);
- memcpy (t->name, name, length);
- t->name[length] = '\0';
+ t->name = (char*) nmem_malloc(nmem,length+1);
+ memcpy (t->name, name, length);
+ t->name[length] = '\0';
}
if (!flags)
- t->flags = NULL;
+ t->flags = NULL;
else
- t->flags = xstrdup (flags);
- t->nn = 1;
+ t->flags = nmem_strdup(nmem,flags);
+ t->type = type;
+ t->rankpriv=0;
+ t->rset=0;
return t;
}
-void rset_term_destroy (RSET_TERM t)
-{
- xfree (t->name);
- xfree (t->flags);
- xfree (t);
-}
-RSET_TERM rset_term_dup (RSET_TERM t)
-{
- RSET_TERM nt = xmalloc (sizeof(*nt));
- if (t->name)
- nt->name = xstrdup (t->name);
- else
- nt->name = NULL;
- if (t->flags)
- nt->flags = xstrdup (t->flags);
- else
- nt->flags = NULL;
- nt->nn = t->nn;
- return nt;
-}
projects / idzebra-moved-to-github.git / blobdiff