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Added function delete_value() to remove entries from the index files

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when necessary.
This commit is contained in:
Juan Gomez 1999-06-15 19:50:20 +00:00
parent 6380786169
commit e1819eaff9
1 changed files with 210 additions and 1 deletions
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211
servers/slapd/back-ldbm/index.c
View file

@ -10,7 +10,18 @@
#include "slap.h"
#include "back-ldbm.h"
static int add_value(Backend *be, struct dbcache *db, char *type, int indextype, char *val, ID id);
static int add_value(Backend *be,
struct dbcache *db,
char *type,
int indextype,
char *val,
ID id);
static int delete_value(Backend *be,
struct dbcache *db,
char *type,
int indextype,
char *val,
ID id);
static int index2prefix(int indextype);
int
@ -169,6 +180,23 @@ index_read(
return( idl );
}
/* Remove values from index files */
static int
delete_value(
Backend *be,
struct dbcache *db,
char *type,
int indextype,
char *val,
ID id
)
{
return 0;
}/* static int delete_value() */
static int
add_value(
Backend *be,
@ -236,6 +264,187 @@ index_delete_values(
ID id
)
{
int indexmask, syntax;
char *at_cn; /* Attribute canonical name */
struct dbcache *db;
char *val, *p, *code, *w;
unsigned i, j, len;
char buf[SUBLEN + 1];
char vbuf[BUFSIZ];
char *bigbuf;
Debug( LDAP_DEBUG_TRACE,
"=> index_delete_values( \"%s\", %ld )\n",
(type ? type : "(NULL)"),
id,
0 );
attr_normalize(type);
attr_masks( be->be_private, type, &indexmask, &syntax );
if ( indexmask == 0 ) {
return( 0 );
}
at_cn = at_canonical_name( type );
if ( (db = ldbm_cache_open( be, at_cn, LDBM_SUFFIX, LDBM_WRITER ))
== NULL ) {
Debug( LDAP_DEBUG_ANY,
"<= index_delete_values -1 (could not open(wr) %s%s)\n",
at_cn,
LDBM_SUFFIX,
0 );
return( -1 );
}
/* Remove each value from index file */
for ( i = 0; vals[i] != NULL; i++ ) {
/*
* Presence index entry
*/
if ( indexmask & INDEX_PRESENCE ) {
delete_value( be, db, at_cn, INDEX_PRESENCE, "*", id );
}
Debug( LDAP_DEBUG_TRACE,
"*** index_add_values syntax 0x%x syntax bin 0x%x\n",
syntax, SYNTAX_BIN, 0 );
if ( syntax & SYNTAX_BIN ) {
ldbm_cache_close( be, db );
return( 0 );
}
bigbuf = NULL;
len = vals[i]->bv_len;
/* value + null */
if ( len + 2 > sizeof(vbuf) ) {
bigbuf = (char *) ch_malloc( len + 1 );
val = bigbuf;
} else {
val = vbuf;
}
(void) memcpy( val, vals[i]->bv_val, len );
val[len] = '\0';
value_normalize( val, syntax );
/* value_normalize could change the length of val */
len = strlen( val );
/*
* equality index entry
*/
if ( indexmask & INDEX_EQUALITY ) {
delete_value( be, db, at_cn, INDEX_EQUALITY, val, id );
}
/*
* approximate index entry
*/
if ( indexmask & INDEX_APPROX ) {
for ( w = first_word( val );
w != NULL;
w = next_word( w ) ) {
if ( (code = phonetic( w )) != NULL ) {
delete_value( be,
db,
at_cn,
INDEX_APPROX,
code,
id );
free( code );
}
}
}
/*
* substrings index entry
*/
if ( indexmask & INDEX_SUB ) {
/* leading and trailing */
if ( len > SUBLEN - 2 ) {
buf[0] = '^';
for ( j = 0; j < SUBLEN - 1; j++ ) {
buf[j + 1] = val[j];
}
buf[SUBLEN] = '\0';
delete_value( be,
db,
at_cn,
INDEX_SUB,
buf,
id );
p = val + len - SUBLEN + 1;
for ( j = 0; j < SUBLEN - 1; j++ ) {
buf[j] = p[j];
}
buf[SUBLEN - 1] = '$';
buf[SUBLEN] = '\0';
delete_value( be,
db,
at_cn,
INDEX_SUB,
buf,
id );
}
/* any */
for (p = val; p < (val + len - SUBLEN + 1); p++) {
for ( j = 0; j < SUBLEN; j++ ) {
buf[j] = p[j];
}
buf[SUBLEN] = '\0';
delete_value( be,
db,
at_cn,
INDEX_SUB,
buf,
id );
}/* for (p = val; p < (val + len - SUBLEN + 1); p++) */
}/* if ( indexmask & INDEX_SUB ) */
if ( bigbuf != NULL ) {
free( bigbuf );
}
}/* for ( i = 0; vals[i] != NULL; i++ ) */
ldbm_cache_close( be, db );
return 0;