inscon.c
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- /*
- * inscon.c - mass insertion of rows satisfyed specific condition
- * on basis scanning of specific table
- * by itself, by specific index, by specific filter
- * Kernel of GNU SQL-server
- *
- * This file is a part of GNU SQL Server
- *
- * Copyright (c) 1996, 1997, Free Software Foundation, Inc
- * Developed at the Institute of System Programming
- * This file is written by Vera Ponomarenko
- *
- * This program 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 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Contacts: gss@ispras.ru
- *
- */
- /* $Id: inscon.c,v 1.246 1997/04/10 06:57:28 vera Exp $ */
- #include "destrn.h"
- #include "strml.h"
- #include "fdcltrn.h"
- #include "xmem.h"
- extern struct des_nseg desnseg;
- extern char *pbuflj;
- extern struct ADBL adlj;
- extern i4_t ljmsize;
- extern i4_t ljrsize;
- extern struct ldesind **TAB_IFAM;
- #define CMP_REL
- if (sn_out != NRSNUM)
- {
- if ((cpn = cont_fir (pidrl_out, &dr_out)) != OK)
- return (cpn);
- if ((cpn = synlsc (WSC, pidrl_out, sc, slsz, fn, (u2_t *) NULL)) != OK)
- return (cpn);
- fn2 = dr_out->desrbd.fieldnum;
- fdf2 = dr_out->desrbd.fdfnum;
- df2 = (struct des_field *) (dr_out + 1);
- }
- else
- { /* The insertion in the temporary relation */
- dtr_out = (struct des_trel *) * (desnseg.tobtab + pidrl_out->urn.obnum);
- if (dtr_out->tobtr.prdt.prob != TREL)
- return (NDR);
- fn2 = dtr_out->fieldn;
- fdf2 = dtr_out->fdftr;
- df2 = (struct des_field *) (dtr_out + 1);
- dt = (struct des_tob *) dtr_out;
- }
- if ((cpn = cmprel (fn, fdf, df, fn2, fdf2, df2)) != OK)
- return (cpn);
- #define INSERTION_BY_TID(pn,ind)
- if (oldpn != pn)
- {
- putpg (&inpage, 'n');
- while ((asp = getpg (&inpage, sn_in, pn, 's')) == NULL);
- afi = (u2_t *) (asp + phsize);
- oldpn = pn;
- }
- ai = afi + ind;
- #define MASS_INSERTION
- if (*ai != 0 && CHECK_PG_ENTRY(ai))
- {
- if (sn_out != NRSNUM)
- {
- if ((corsize = fndslc (dr_in, asp, ai, sc,
- slsz, cort)) != 0)
- mins (cort, corsize, outpage, &freesz, dr_out);
- }
- else
- if ((corsize = fndslc (dr_in, asp, ai, sc,
- slsz, NULL)) != 0)
- minstr (outpage, asp + *ai, corsize, dt);
- }
- #define END_MASS_INS
- if (sn_out != NRSNUM)
- eop_mass_ins (pidrl_out->urn.obnum, outpage, freesz);
- else
- {
- dtr_out->tobtr.prdt.prsort = NSORT;
- putwul (outpage, 'm');
- }
- static int
- cmprel (u2_t fn1, u2_t fdf1, struct des_field *df1, u2_t fn2,
- u2_t fdf2, struct des_field *df2)
- {
- struct des_field *ldf;
- u2_t type;
-
- if (fn1 != fn2 || fdf1 != fdf2)
- return (N_EQV);
- for (ldf = df1 + fn1; df1 < ldf; df1++, df2++)
- {
- if ((type = df1->field_type) != df2->field_type)
- return (N_EQV);
- if (type == TCH || type == TFL)
- if (df1->field_size > df2->field_size)
- return (N_EQV);
- }
- return (OK);
- }
- static void
- eop_mass_ins (i4_t rn, struct A *outpage, u2_t freesz)
- {
- if (outpage->p_shm != NULL)
- {
- u2_t sn;
- sn = outpage->p_sn;
- tab_difam (sn);
- insrec (TAB_IFAM[sn], rn, outpage->p_pn, freesz);
- putwul (outpage, 'm');
- }
- }
- static void
- mins (char *cort, u2_t corsize, struct A *outpage, u2_t *freesz,
- struct d_r_t *desrel)
- {
- char *tuple, *outasp;
- struct page_head *ph;
- i4_t n, ni, rn;
- u2_t size, delta, sn;
- struct des_tid tid;
- struct id_rel idr;
- struct ADBL last_adlj;
- modmes ();
- *cort = CORT;
- delta = corsize + size2b;
- last_adlj = adlj;
- tuple = cort;
- sn = desrel ->segnr;
- rn = desrel->desrbd.relnum;
- if (delta > * freesz)
- {
- u2_t newpn;
- eop_mass_ins (rn, outpage, *freesz);
- newpn = getempt (sn);
- outasp = getnew (outpage, sn, newpn);
- tid.tpn = newpn;
- tid.tindex = 0;
- size = BD_PAGESIZE - corsize;
- ph = (struct page_head *) outasp;
- ph->lastin = 0;
- t2bpack (size, outasp + phsize);
- *freesz = BD_PAGESIZE - phsize - delta;
- }
- else
- {
- u2_t *ai;
- outasp = outpage->p_shm;
- ph = (struct page_head *) outasp;
- ai = (u2_t *) (outasp + phsize) + ph->lastin;
- size = *ai - corsize;
- ph->lastin++;
- tid.tpn = outpage->p_pn;
- tid.tindex = ph->lastin;
- *(ai + 1) = size;
- *freesz -= delta;
- }
- idr.urn.segnum = sn;
- idr.urn.obnum = rn;
- idr.pagenum = desrel->pn_r;
- idr.index = desrel->ind_r;
- wmlj (INSLJ, ljmsize + corsize, &adlj, &idr, &tid, 0);
- bcopy (cort, outasp + size, corsize);
- n = desrel->desrbd.indnum;
- ni = proind (ordindi, desrel, n, tuple, &tid);
- if (ni < n)
- {
- struct des_tid ref_tid;
- wmlj (RLBLJ, ljrsize, &last_adlj, &idr, &tid, 0);
- proind (ordindd, desrel, ni, tuple, &tid);
- ref_tid.tpn = (u2_t) ~ 0;
- orddel (sn, rn, &tid, &ref_tid, corsize);
- }
- }
- CPNM
- inscrl (struct id_rel *pidrl_in, struct id_rel *pidrl_out, u2_t fln,
- u2_t * fl, u2_t slsz, char *sc)
- {
- u2_t fn, fdf, fn2, fdf2, *ali, sn_in, sn_out, *ai;
- char *cort, *asp = NULL;
- struct des_field *df, *df2;
- u2_t pn, corsize, freesz = 0;
- struct d_r_t *dr_out;
- struct des_trel *dtr_out = NULL;
- struct des_tob *dt = NULL;
- CPNM cpn;
- char *outasp = NULL;
- struct A inpage, *outpage, outpg;
- char *arrpnt[BD_PAGESIZE];
- u2_t arrsz[BD_PAGESIZE];
- sn_in = pidrl_in->urn.segnum;
- sn_out = pidrl_out->urn.segnum;
- if (sn_in == sn_out && pidrl_in->urn.obnum == pidrl_out->urn.obnum)
- return (NDR);
- cort = pbuflj + ljmsize;
- outpage = &outpg;
- outpage->p_shm = NULL;
- if (sn_in != NRSNUM)
- {
- struct d_r_t *dr_in;
- struct d_sc_i *scind;
- struct ldesscan *disc;
- u2_t size;
- i4_t rep;
- i2_t num;
-
- if ((cpn = contir (pidrl_in, &dr_in)) != OK)
- return (cpn);
- fn = dr_in->desrbd.fieldnum;
- fdf = dr_in->desrbd.fdfnum;
- df = (struct des_field *) (dr_in + 1);
- if (testcond (df, fn, fdf, 0, NULL, &slsz, sc, 0, NULL) != OK)
- return (NCF);
- if ((cpn = synlsc (RSC, pidrl_in, sc, slsz, fn, (u2_t *) NULL)) != OK)
- return (cpn);
- CMP_REL;
- if (sn_out == NRSNUM)
- outasp = getwl (outpage, NRSNUM, dtr_out->tobtr.lastpn);
- scind = rel_scan (sn_in, pidrl_in->urn.obnum, (char *) dr_in,
- &num, 0, NULL, NULL, 0, 0, NULL);
- disc = &scind->dessc;
- rep = fgetnext (disc, &pn, &size, FASTSCAN);
- for (; rep != EOI;)
- {
- while ((asp = getpg (&inpage, sn_in, pn, 's')) == NULL);
- ai = (u2_t *) (asp + phsize);
- ali = ai + ((struct page_head *) asp)->lastin;
- for (; ai <= ali; ai++)
- MASS_INSERTION;
- putpg (&inpage, 'n');
- rep = getnext (disc, &pn, &size, FASTSCAN);
- }
- delscan (num);
- }
- else /* sn_in == NRSNUM */
- {
- struct des_trel *dtr_in;
-
- dtr_in = (struct des_trel *) * (desnseg.tobtab + pidrl_in->urn.obnum);
- if (dtr_in->tobtr.prdt.prob != TREL)
- return (NDR);
- fn = dtr_in->fieldn;
- fdf = dtr_in->fdftr;
- df = (struct des_field *) (dtr_in + 1);
- if (testcond (df, fn, fdf, 0, NULL, &slsz, sc, 0, NULL) != OK)
- return (NCF);
- CMP_REL;
- if (sn_out == NRSNUM)
- outasp = getwl (outpage, NRSNUM, dtr_out->tobtr.lastpn);
- for (pn = dtr_in->tobtr.firstpn; pn != (u2_t) ~ 0;)
- {
- asp = getwl (&inpage, NRSNUM, pn);
- ai = (u2_t *) (asp + phtrsize);
- ali = ai + ((struct p_h_tr *) asp)->linptr;
- for (; ai <= ali; ai++)
- if (*ai != 0 &&
- (corsize = tstcsel (df, fn, fdf, slsz,
- sc, asp + *ai, arrpnt, arrsz)) != 0 )
- {
- if (sn_out != NRSNUM)
- mins (asp + *ai, corsize, outpage, &freesz, dr_out);
- else
- minstr (outpage, asp + *ai, corsize, dt);
- }
- pn = ((struct listtob *) asp)->nextpn;
- putwul (&inpage, 'n');
- }
- }
- END_MASS_INS;
- return (OK);
- }
- int
- inscin (struct id_ind *pidind, struct id_rel *pidrl_out, u2_t fln,
- u2_t * fl, u2_t slsz, char *sc, u2_t diasz, char *diasc)
- {
- u2_t fn, fdf, fn2, fdf2, sn_in, sn_out, oldpn;
- char *asp = NULL, *cort;
- struct des_field *df, *df2;
- struct ldesscan *disc;
- struct d_sc_i *scind;
- struct ldesind *di;
- u2_t *afi, *ai, corsize, kn, dscsz, freesz = 0;
- struct d_r_t *dr_in, *dr_out;
- struct id_rel *pidrl_in;
- struct des_tid tid;
- struct des_trel *dtr_out = NULL;
- char *outasp = NULL;
- i2_t n;
- i4_t cpn;
- struct des_tob *dt = NULL;
- struct A inpage, *outpage, outpg;
- i4_t rep;
- pidrl_in = &pidind->irii;
- sn_in = pidrl_in->urn.segnum;
- sn_out = pidrl_out->urn.segnum;
- if (sn_in == sn_out && pidrl_in->urn.obnum == pidrl_out->urn.obnum)
- return (NDR);
- if ((cpn = cont_id (pidind, &dr_in, &di)) != OK)
- return (cpn);
- fn = dr_in->desrbd.fieldnum;
- fdf = dr_in->desrbd.fdfnum;
- df = (struct des_field *) (dr_in + 1);
- if (testcond (df, fn, fdf, 0, NULL, &slsz, sc, 0, NULL) != OK)
- return (NCF);
- ai = (u2_t *) (di + 1);
- if ((cpn = testdsc (dr_in, &diasz, diasc, ai, &dscsz)) != OK)
- return (cpn);
- if ((cpn = synlsc (RSC, pidrl_in, sc, slsz, fn, (u2_t *) NULL)) != OK)
- return (cpn);
- kn = di->ldi.kifn & ~UNIQ & MSK21B;
- if ((cpn = synlsc (RSC, pidrl_in, diasc, diasz, kn, ai)) != OK)
- return (cpn);
- CMP_REL;
- scind = (struct d_sc_i *) lusc (&n, scisize, (char *) di, SCI, WSC,
- 0, NULL, sc, slsz,
- 0, NULL, diasz + size2b);
- disc = &scind->dessc;
- disc->curlpn = (u2_t) ~ 0;
- asp = (char *) scind + scisize + slsz + size2b;
- disc->dpnsc = asp;
- t2bpack (diasz, asp);
- disc->dpnsval = asp + size2b + dscsz;
- bcopy (diasc, asp + size2b, diasz);
- cort = pbuflj + ljmsize;
- outpage = &outpg;
- outpage->p_shm = NULL;
- if ((rep = ind_ftid (disc, &tid, FASTSCAN)) != EOI)
- {
- oldpn = tid.tpn;
- while ((asp = getpg (&inpage, sn_in, oldpn, 's')) == NULL);
- afi = (u2_t *) (asp + phsize);
- }
- else
- goto m1;
- if (sn_out == NRSNUM)
- outasp = getwl (outpage, NRSNUM, dtr_out->tobtr.lastpn);
- for (; rep != EOI; rep = ind_tid (disc, &tid, FASTSCAN))
- {
- INSERTION_BY_TID(tid.tpn,tid.tindex);
- MASS_INSERTION;
- }
- END_MASS_INS;
- m1:
- delscan (n);
- return (OK);
- }
- int
- inscfl (i4_t idfl, struct id_rel *pidrl_out, u2_t fln, u2_t * fl,
- u2_t slsz, char *sc)
- {
- u2_t fn, fdf, fn2, fdf2, sn_out, flpn, off;
- struct des_tid *tid, *tidb;
- char *aspfl, *cort, *asp = NULL;
- u2_t oldpn, *afi, *ai, corsize, sn_in, freesz = 0;
- struct d_r_t *dr_in, *dr_out;
- struct des_field *df, *df2;
- struct des_trel *dtr_out = NULL;
- struct des_fltr *desfl;
- char *outasp = NULL;
- struct des_tob *dt = NULL;
- CPNM cpn;
- struct A inpage, *outpage, inflpg, outpg;
- if ((u2_t) idfl > desnseg.mtobnum)
- return (NIOB);
- desfl = (struct des_fltr *) * (desnseg.tobtab + idfl);
- if (desfl == NULL)
- return (NIOB);
- if (((struct prtob *) desfl)->prob != FLTR)
- return (NIOB);
- dr_in = desfl->pdrtf;
- fn = dr_in->desrbd.fieldnum;
- fdf = dr_in->desrbd.fdfnum;
- df = (struct des_field *) (dr_in + 1);
- if (testcond (df, fn, fdf, 0, NULL, &slsz, sc, 0, NULL) != OK)
- return (NCF);
- sn_in = dr_in->segnr;
- sn_out = pidrl_out->urn.segnum;
- cort = pbuflj + ljmsize;
- outpage = &outpg;
- outpage->p_shm = NULL;
- CMP_REL;
- if (sn_out == NRSNUM)
- outasp = getwl (outpage, sn_out, dtr_out->tobtr.lastpn);
- for (flpn = desfl->tobfl.firstpn; flpn != (u2_t) ~ 0;)
- {
- aspfl = getwl (&inflpg, NRSNUM, flpn);
- off = ((struct p_h_f *) aspfl)->freeoff;
- tid = (struct des_tid *) (aspfl + phfsize);
- oldpn = tid->tpn;
- while ((asp = getpg (&inpage, sn_in, oldpn, 's')) == NULL);
- afi = (u2_t *) (asp + phsize);
- tidb = (struct des_tid *) (aspfl + off);
- for (; tid < tidb; tid++)
- {
- INSERTION_BY_TID(tid->tpn,tid->tindex);
- MASS_INSERTION;
- }
- flpn = ((struct p_h_f *) aspfl)->listfl.nextpn;
- putwul (&inflpg, 'n');
- }
- END_MASS_INS;
- return (OK);
- }