Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Silently ignore any attempt to add a prefix index for prefixes zero bytes in size to an fts3/4 table. Or any prefix index size so large that it overflows a 32-bit signed integer. Cherrypick [ad4b19d2ac0889a] |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | branch-3.7.11 |
| Files: | files | file ages | folders |
| SHA1: |
000197cc4e3874711388d79d9ad5af6f |
| User & Date: | drh 2015-05-21 02:24:35.011 |
Context
|
2017-07-21
| ||
| 03:09 | Add new interfaces sqlite3_result_pointer(), and sqlite3_value_pointer() and use them to transfer the eponymous FTS3 column pointer to the snippet() and offsets() routines. This changes is inspired by check-in [72de49f2] but is new implementation, not a cherry-pick. (Leaf check-in: f0f492245e user: drh tags: branch-3.7.11) | |
|
2015-05-21
| ||
| 02:24 | Silently ignore any attempt to add a prefix index for prefixes zero bytes in size to an fts3/4 table. Or any prefix index size so large that it overflows a 32-bit signed integer. Cherrypick [ad4b19d2ac0889a] (check-in: 000197cc4e user: drh tags: branch-3.7.11) | |
| 02:20 | Ensure that tables names are dequoted exactly once by the trigger logic. Cherrypick [59e92bd9521f1e8] and [9d887b92f8086961e]. (check-in: 9e3f64a4f4 user: drh tags: branch-3.7.11) | |
|
2015-03-19
| ||
| 15:52 | Silently ignore any attempt to add a prefix index for prefixes zero bytes in size to an fts3/4 table. Or any prefix index size so large that it overflows a 32-bit signed integer. (check-in: ad4b19d2ac user: dan tags: trunk) | |
Changes
Changes to ext/fts3/fts3.c.
| ︙ | ︙ | |||
916 917 918 919 920 921 922 |
for(p=zParam; *p; p++){
if( *p==',' ) nIndex++;
}
}
aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
*apIndex = aIndex;
| < > > > > | > > | 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 |
for(p=zParam; *p; p++){
if( *p==',' ) nIndex++;
}
}
aIndex = sqlite3_malloc(sizeof(struct Fts3Index) * nIndex);
*apIndex = aIndex;
if( !aIndex ){
return SQLITE_NOMEM;
}
memset(aIndex, 0, sizeof(struct Fts3Index) * nIndex);
if( zParam ){
const char *p = zParam;
int i;
for(i=1; i<nIndex; i++){
int nPrefix;
if( fts3GobbleInt(&p, &nPrefix) ) return SQLITE_ERROR;
if( nPrefix<=0 ){
nIndex--;
i--;
}else{
aIndex[i].nPrefix = nPrefix;
}
p++;
}
}
*pnIndex = nIndex;
return SQLITE_OK;
}
/*
** This function is called when initializing an FTS4 table that uses the
** content=xxx option. It determines the number of and names of the columns
** of the new FTS4 table.
|
| ︙ | ︙ |
Changes to test/fts3prefix.test.
| ︙ | ︙ | |||
205 206 207 208 209 210 211 212 213 |
#
do_catchsql_test 5.1 {
CREATE VIRTUAL TABLE t4 USING fts4(prefix="abc");
} {1 {error parsing prefix parameter: abc}}
do_catchsql_test 5.2 {
CREATE VIRTUAL TABLE t4 USING fts4(prefix="");
} {0 {}}
finish_test
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 |
#
do_catchsql_test 5.1 {
CREATE VIRTUAL TABLE t4 USING fts4(prefix="abc");
} {1 {error parsing prefix parameter: abc}}
do_catchsql_test 5.2 {
CREATE VIRTUAL TABLE t4 USING fts4(prefix="");
} {0 {}}
do_catchsql_test 5.3 {
CREATE VIRTUAL TABLE t5 USING fts4(prefix="-1");
} {1 {error parsing prefix parameter: -1}}
#-------------------------------------------------------------------------
# Prefix indexes of size 0 are ignored. Demonstrate this by showing that
# adding prefix=0 does not change the contents of the %_segdir table.
#
reset_db
do_execsql_test 6.1.1 {
CREATE VIRTUAL TABLE t1 USING fts4(prefix=0);
CREATE VIRTUAL TABLE t2 USING fts4;
INSERT INTO t1 VALUES('Twas Mulga Bill, from Eaglehawk, ');
INSERT INTO t2 VALUES('Twas Mulga Bill, from Eaglehawk, ');
} {}
do_execsql_test 6.1.2 {
SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
reset_db
do_execsql_test 6.2.1 {
CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,0,2");
CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
INSERT INTO t1 VALUES('that caught the cycling craze;');
INSERT INTO t2 VALUES('that caught the cycling craze;');
} {}
do_execsql_test 6.2.2 {
SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
reset_db
do_execsql_test 6.3.1 {
CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,3,2");
CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
INSERT INTO t1 VALUES('He turned away the good old horse');
INSERT INTO t2 VALUES('He turned away the good old horse');
} {}
do_test 6.3.2 {
set one [db eval {SELECT md5sum(quote(root)) FROM t1_segdir}]
set two [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
expr {$one == $two}
} 0
reset_db
do_execsql_test 6.4.1 {
CREATE VIRTUAL TABLE t1 USING fts4(prefix="1,600,2");
CREATE VIRTUAL TABLE t2 USING fts4(prefix="1,2");
INSERT INTO t1 VALUES('that served him many days;');
INSERT INTO t2 VALUES('that served him many days;');
} {}
do_execsql_test 6.4.2 {
SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
reset_db
do_execsql_test 6.5.1 {
CREATE VIRTUAL TABLE t1 USING fts4(prefix="2147483647,2147483648,2147483649");
CREATE VIRTUAL TABLE t2 USING fts4(prefix="");
INSERT INTO t1 VALUES('He dressed himself in cycling clothes');
INSERT INTO t2 VALUES('He dressed himself in cycling clothes');
} {}
do_execsql_test 6.5.2 {
SELECT md5sum(quote(root)) FROM t1_segdir;
} [db eval {SELECT md5sum(quote(root)) FROM t2_segdir}]
finish_test
|