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Overview
Comment: | Allow the "order=DESC" and "order=ASC" parameters in FTS4 "CREATE VIRTUAL TABLE" statements. Tables created with "order=DESC" store all doclists in descending order, which allows optimizations normally applied to "ORDER BY docid ASC" queries to be used with "ORDER BY docid DESC" queries instead. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | fts3-prefix-search |
Files: | files | file ages | folders |
SHA1: |
f6a0193f5a32603eb48bddc6297042db |
User & Date: | dan 2011-06-04 20:04:35.492 |
Context
2011-06-04
| ||
20:13 | Remove some unreachable code. (check-in: 650e1a79ed user: dan tags: fts3-prefix-search) | |
20:04 | Allow the "order=DESC" and "order=ASC" parameters in FTS4 "CREATE VIRTUAL TABLE" statements. Tables created with "order=DESC" store all doclists in descending order, which allows optimizations normally applied to "ORDER BY docid ASC" queries to be used with "ORDER BY docid DESC" queries instead. (check-in: f6a0193f5a user: dan tags: fts3-prefix-search) | |
2011-06-03
| ||
18:00 | FTS changes: Remove unreachable code. Fix bugs. When processing a large doclist incrementally, read from disk incrementally too. (check-in: a4c7e28208 user: dan tags: fts3-prefix-search) | |
Changes
Changes to ext/fts3/fts3.c.
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419 420 421 422 423 424 425 | 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 | - + - + - + | *pVal += iVal; } /* ** When this function is called, *pp points to the first byte following a ** varint that is part of a doclist (or position-list, or any other list ** of varints). This function moves *pp to point to the start of that varint, |
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912 913 914 915 916 917 918 | 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 | - - + + + + + - - + + + + + + + + + + + + + + + + + + + | int iCol; /* Column index */ int nString = 0; /* Bytes required to hold all column names */ int nCol = 0; /* Number of columns in the FTS table */ char *zCsr; /* Space for holding column names */ int nDb; /* Bytes required to hold database name */ int nName; /* Bytes required to hold table name */ int isFts4 = (argv[0][3]=='4'); /* True for FTS4, false for FTS3 */ |
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963 964 965 966 967 968 969 970 971 | 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 | + - - - - - - + - - - - + + - - - + - - + + - - - - - - - + + + + + + + + + - - + + + + + + + + + + + + + + + + + + + + + + + | && 0==sqlite3Fts3IsIdChar(z[8]) ){ rc = sqlite3Fts3InitTokenizer(pHash, &z[9], &pTokenizer, pzErr); } /* Check if it is an FTS4 special argument. */ else if( isFts4 && fts3IsSpecialColumn(z, &nKey, &zVal) ){ int iOpt; if( !zVal ){ rc = SQLITE_NOMEM; |
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1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 | 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 | + | p->nPendingData = 0; p->azColumn = (char **)&p[1]; p->pTokenizer = pTokenizer; p->nNodeSize = 1000; p->nMaxPendingData = FTS3_MAX_PENDING_DATA; p->bHasDocsize = (isFts4 && bNoDocsize==0); p->bHasStat = isFts4; p->bDescIdx = bDescIdx; TESTONLY( p->inTransaction = -1 ); TESTONLY( p->mxSavepoint = -1 ); p->aIndex = (struct Fts3Index *)&p->azColumn[nCol]; memcpy(p->aIndex, aIndex, sizeof(struct Fts3Index) * nIndex); p->nIndex = nIndex; for(i=0; i<nIndex; i++){ |
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1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 | 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 | + + | fts3DeclareVtab(&rc, p); fts3_init_out: sqlite3_free(zPrefix); sqlite3_free(aFree); sqlite3_free(zCompress); sqlite3_free(zUncompress); sqlite3_free(zOrder); sqlite3_free(zMatchinfo); sqlite3_free((void *)aCol); if( rc!=SQLITE_OK ){ if( p ){ fts3DisconnectMethod((sqlite3_vtab *)p); }else if( pTokenizer ){ pTokenizer->pModule->xDestroy(pTokenizer); } |
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1876 1877 1878 1879 1880 1881 1882 | 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 | - - + + + | /* ** Values that may be used as the first parameter to fts3DoclistMerge(). */ #define MERGE_NOT 2 /* D + D -> D */ #define MERGE_AND 3 /* D + D -> D */ #define MERGE_OR 4 /* D + D -> D */ |
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1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 | 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 | + | int nDoc = 0; assert( mergetype==MERGE_OR || mergetype==MERGE_POS_OR || mergetype==MERGE_AND || mergetype==MERGE_NOT || mergetype==MERGE_PHRASE || mergetype==MERGE_POS_PHRASE || mergetype==MERGE_NEAR || mergetype==MERGE_POS_NEAR ); assert( mergetype==MERGE_POS_PHRASE || mergetype==MERGE_POS_NEAR ); if( !aBuffer ){ *pnBuffer = 0; return SQLITE_NOMEM; } /* Read the first docid from each doclist */ |
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2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 | 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 | + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + - + - - - + + + + + + + - + - + - - | */ typedef struct TermSelect TermSelect; struct TermSelect { int isReqPos; char *aaOutput[16]; /* Malloc'd output buffer */ int anOutput[16]; /* Size of output in bytes */ }; static void fts3GetDeltaVarint3( char **pp, char *pEnd, int bDescIdx, sqlite3_int64 *pVal ){ if( *pp>=pEnd ){ *pp = 0; }else{ sqlite3_int64 iVal; *pp += sqlite3Fts3GetVarint(*pp, &iVal); if( bDescIdx ){ *pVal -= iVal; }else{ *pVal += iVal; } } } static void fts3PutDeltaVarint3( char **pp, /* IN/OUT: Output pointer */ int bDescIdx, /* True for descending docids */ sqlite3_int64 *piPrev, /* IN/OUT: Previous value written to list */ int *pbFirst, /* IN/OUT: True after first int written */ sqlite3_int64 iVal /* Write this value to the list */ ){ sqlite3_int64 iWrite; if( bDescIdx==0 || *pbFirst==0 ){ iWrite = iVal - *piPrev; }else{ iWrite = *piPrev - iVal; } assert( *pbFirst || *piPrev==0 ); assert( *pbFirst==0 || iWrite>0 ); *pp += sqlite3Fts3PutVarint(*pp, iWrite); *piPrev = iVal; *pbFirst = 1; } #define COMPARE_DOCID(i1, i2) ((bDescIdx?-1:1) * (i1-i2)) static int fts3DoclistOrMerge( int bDescIdx, /* True if arguments are desc */ u8 *a1, int n1, /* First doclist */ u8 *a2, int n2, /* Second doclist */ u8 **paOut, int *pnOut /* OUT: Malloc'd doclist */ ){ sqlite3_int64 i1 = 0; sqlite3_int64 i2 = 0; sqlite3_int64 iPrev = 0; char *pEnd1 = &a1[n1]; char *pEnd2 = &a2[n2]; char *p1 = a1; char *p2 = a2; char *p; int nOut; char *aOut; int bFirstOut = 0; *paOut = 0; *pnOut = 0; aOut = sqlite3_malloc(n1+n2); if( !aOut ) return SQLITE_NOMEM; p = aOut; fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); while( p1 || p2 ){ sqlite3_int64 iDiff = COMPARE_DOCID(i1, i2); if( p2 && p1 && iDiff==0 ){ fts3PutDeltaVarint3(&p, bDescIdx, &iPrev, &bFirstOut, i1); fts3PoslistMerge(&p, &p1, &p2); fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); }else if( !p2 || (p1 && iDiff<0) ){ fts3PutDeltaVarint3(&p, bDescIdx, &iPrev, &bFirstOut, i1); fts3PoslistCopy(&p, &p1); fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); }else{ fts3PutDeltaVarint3(&p, bDescIdx, &iPrev, &bFirstOut, i2); fts3PoslistCopy(&p, &p2); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); } } *paOut = aOut; *pnOut = (p-aOut); return SQLITE_OK; } static void fts3DoclistPhraseMerge( int bDescIdx, /* True if arguments are desc */ int nDist, /* Distance from left to right (1=adjacent) */ u8 *aLeft, int nLeft, /* Left doclist */ u8 *aRight, int *pnRight /* IN/OUT: Right/output doclist */ ){ sqlite3_int64 i1 = 0; sqlite3_int64 i2 = 0; sqlite3_int64 iPrev = 0; char *pEnd1 = &aLeft[nLeft]; char *pEnd2 = &aRight[*pnRight]; char *p1 = aLeft; char *p2 = aRight; char *p; int bFirstOut = 0; char *aOut = aRight; assert( nDist>0 ); p = aOut; fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); while( p1 && p2 ){ sqlite3_int64 iDiff = COMPARE_DOCID(i1, i2); if( iDiff==0 ){ char *pSave = p; sqlite3_int64 iPrevSave = iPrev; int bFirstOutSave = bFirstOut; fts3PutDeltaVarint3(&p, bDescIdx, &iPrev, &bFirstOut, i1); if( 0==fts3PoslistPhraseMerge(&p, nDist, 0, 1, &p1, &p2) ){ p = pSave; iPrev = iPrevSave; bFirstOut = bFirstOutSave; } fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); }else if( iDiff<0 ){ fts3PoslistCopy(0, &p1); fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); }else{ fts3PoslistCopy(0, &p2); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); } } *pnRight = p - aOut; } /* ** This function merges two doclists according to the requirements of a ** NEAR operator. */ static int fts3DoclistNearMerge( int bDescIdx, int mergetype, /* MERGE_POS_NEAR or MERGE_NEAR */ int nNear, /* Parameter to NEAR operator */ int nTokenLeft, /* Number of tokens in LHS phrase arg */ char *aLeft, /* Doclist for LHS (incl. positions) */ int nLeft, /* Size of LHS doclist in bytes */ int nTokenRight, /* As nTokenLeft */ char *aRight, /* As aLeft */ int nRight, /* As nRight */ char **paOut, /* OUT: Results of merge (malloced) */ int *pnOut /* OUT: Sized of output buffer */ ){ char *aOut; /* Buffer to write output doclist to */ char *aTmp; /* Temp buffer used by PoslistNearMerge() */ sqlite3_int64 i1 = 0; sqlite3_int64 i2 = 0; sqlite3_int64 iPrev = 0; int bFirstOut = 0; char *pEnd1 = &aLeft[nLeft]; char *pEnd2 = &aRight[nRight]; char *p1 = aLeft; char *p2 = aRight; char *p; int nParam1 = nNear+nTokenRight; int nParam2 = nNear+nTokenLeft; p = aOut = sqlite3_malloc(nLeft+nRight+1); aTmp = sqlite3_malloc(2*(nLeft+nRight+1)); if( !aOut || !aTmp ){ sqlite3_free(aOut); sqlite3_free(aTmp); *paOut = 0; *pnOut = 0; return SQLITE_NOMEM; } fts3GetDeltaVarint3(&p1, pEnd1, 0, &i1); fts3GetDeltaVarint3(&p2, pEnd2, 0, &i2); while( p1 && p2 ){ sqlite3_int64 iDiff = COMPARE_DOCID(i1, i2); if( iDiff==0 ){ char *pSave = p; sqlite3_int64 iPrevSave = iPrev; int bFirstOutSave = bFirstOut; fts3PutDeltaVarint3(&p, bDescIdx, &iPrev, &bFirstOut, i1); if( !fts3PoslistNearMerge(&p, aTmp, nParam1, nParam2, &p1, &p2) ){ p = pSave; iPrev = iPrevSave; bFirstOut = bFirstOutSave; } fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); }else if( iDiff<0 ){ fts3PoslistCopy(0, &p1); fts3GetDeltaVarint3(&p1, pEnd1, bDescIdx, &i1); }else{ fts3PoslistCopy(0, &p2); fts3GetDeltaVarint3(&p2, pEnd2, bDescIdx, &i2); } } sqlite3_free(aTmp); *paOut = aOut; *pnOut = p - aOut; return SQLITE_OK; } /* ** Merge all doclists in the TermSelect.aaOutput[] array into a single ** doclist stored in TermSelect.aaOutput[0]. If successful, delete all ** other doclists (except the aaOutput[0] one) and return SQLITE_OK. ** ** If an OOM error occurs, return SQLITE_NOMEM. In this case it is ** the responsibility of the caller to free any doclists left in the ** TermSelect.aaOutput[] array. */ |
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2130 2131 2132 2133 2134 2135 2136 | 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 | - + - - - - - + + + + - - - - + + + + - - - - + + - - - - - - - - - - - - + + + + + + + + + + | UNUSED_PARAMETER(p); UNUSED_PARAMETER(zTerm); UNUSED_PARAMETER(nTerm); if( pTS->aaOutput[0]==0 ){ /* If this is the first term selected, copy the doclist to the output |
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2422 2423 2424 2425 2426 2427 2428 | 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 | - + | ){ rc = fts3TermSelectCb(p, (void *)&tsc, pSegcsr->zTerm, pSegcsr->nTerm, pSegcsr->aDoclist, pSegcsr->nDoclist ); } if( rc==SQLITE_OK ){ |
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2472 2473 2474 2475 2476 2477 2478 | 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 | - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | } } } return nDoc; } |
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2584 2585 2586 2587 2588 2589 2590 | 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 | + - + + + + | /* In case the cursor has been used before, clear it now. */ sqlite3_finalize(pCsr->pStmt); sqlite3_free(pCsr->aDoclist); sqlite3Fts3ExprFree(pCsr->pExpr); memset(&pCursor[1], 0, sizeof(Fts3Cursor)-sizeof(sqlite3_vtab_cursor)); if( idxStr ){ |
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2623 2624 2625 2626 2627 2628 2629 | 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 | - + | /* Compile a SELECT statement for this cursor. For a full-table-scan, the ** statement loops through all rows of the %_content table. For a ** full-text query or docid lookup, the statement retrieves a single ** row by docid. */ if( idxNum==FTS3_FULLSCAN_SEARCH ){ |
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3261 3262 3263 3264 3265 3266 3267 | 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 | - - + + | nDoclist = 0; break; }else if( aDoclist==0 ){ aDoclist = pThis; nDoclist = nThis; }else{ assert( iPrev>=0 ); |
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3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 | 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 | + - + - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + - - - - + + + - - - - - - - - - - - - - - - - - - - - - + - - - - - - + - - - - - + + + - + + + + | ** function has been called successfully on an Fts3Phrase, it may be ** used with fts3EvalPhraseNext() to iterate through the matching docids. */ static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){ int rc; Fts3Doclist *pList = &p->doclist; Fts3PhraseToken *pFirst = &p->aToken[0]; Fts3Table *pTab = (Fts3Table *)pCsr->base.pVtab; assert( pList->aAll==0 ); |
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3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 | 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 | + | fts3EvalStartReaders(pCsr, pExpr->pRight, bOptOk, pRc); pExpr->bDeferred = (pExpr->pLeft->bDeferred && pExpr->pRight->bDeferred); } } } static void fts3EvalNearMerge( int bDescIdx, Fts3Expr *p1, Fts3Expr *p2, int nNear, int *pRc ){ if( *pRc==SQLITE_OK ){ int rc; /* Return code */ |
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3563 3564 3565 3566 3567 3568 3569 | 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 | - + | sqlite3_free(pRight->doclist.aAll); pRight->doclist.aAll = 0; pRight->doclist.nAll = 0; }else if( pRight->doclist.aAll ){ char *aOut; /* Buffer in which to assemble new doclist */ int nOut; /* Size of buffer aOut in bytes */ |
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3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 | 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 | + - + - + | nPhrase++; } aPhrase = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nPhrase); if( !aPhrase ){ *pRc = SQLITE_NOMEM; }else{ Fts3Table *p = (Fts3Table *)pCsr->base.pVtab; int i = 1; aPhrase[0] = pLeft; do { pLeft = pLeft->pParent; aPhrase[i++] = pLeft->pRight; }while( pLeft!=pExpr ); for(i=0; i<(nPhrase-1); i++){ int nNear = aPhrase[i+1]->pParent->nNear; |
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Changes to ext/fts3/fts3Int.h.
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176 177 178 179 180 181 182 183 184 185 186 187 188 189 | 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | + | char *zReadExprlist; char *zWriteExprlist; int nNodeSize; /* Soft limit for node size */ u8 bHasStat; /* True if %_stat table exists */ u8 bHasDocsize; /* True if %_docsize table exists */ u8 bDescIdx; /* True if doclists are in reverse order */ int nPgsz; /* Page size for host database */ char *zSegmentsTbl; /* Name of %_segments table */ sqlite3_blob *pSegments; /* Blob handle open on %_segments table */ /* TODO: Fix the first paragraph of this comment. ** ** The following hash table is used to buffer pending index updates during |
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232 233 234 235 236 237 238 | 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 | - + | Fts3Expr *pExpr; /* Parsed MATCH query string */ int nPhrase; /* Number of matchable phrases in query */ Fts3DeferredToken *pDeferred; /* Deferred search tokens, if any */ sqlite3_int64 iPrevId; /* Previous id read from aDoclist */ char *pNextId; /* Pointer into the body of aDoclist */ char *aDoclist; /* List of docids for full-text queries */ int nDoclist; /* Size of buffer at aDoclist */ |
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434 435 436 437 438 439 440 441 442 443 444 445 446 447 | 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 | + | /* fts3.c */ int sqlite3Fts3PutVarint(char *, sqlite3_int64); int sqlite3Fts3GetVarint(const char *, sqlite_int64 *); int sqlite3Fts3GetVarint32(const char *, int *); int sqlite3Fts3VarintLen(sqlite3_uint64); void sqlite3Fts3Dequote(char *); void sqlite3Fts3DoclistPrev(int,char*,int,char**,sqlite3_int64*,int*,u8*); int sqlite3Fts3ExprLoadDoclist(Fts3Cursor *, Fts3Expr *); int sqlite3Fts3ExprNearTrim(Fts3Expr *, Fts3Expr *, int); /* fts3_tokenizer.c */ const char *sqlite3Fts3NextToken(const char *, int *); int sqlite3Fts3InitHashTable(sqlite3 *, Fts3Hash *, const char *); |
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490 491 492 493 494 495 496 497 498 | 492 493 494 495 496 497 498 499 500 501 | + | Fts3Table*, Fts3MultiSegReader*, int, const char*, int); int sqlite3Fts3MsrIncrNext( Fts3Table *, Fts3MultiSegReader *, sqlite3_int64 *, char **, int *); char *sqlite3Fts3EvalPhrasePoslist(Fts3Cursor *, Fts3Expr *, int iCol); int sqlite3Fts3MsrOvfl(Fts3Cursor *, Fts3MultiSegReader *, int *); int sqlite3Fts3DeferredTokenList(Fts3DeferredToken *, char **, int *); #endif /* _FTSINT_H */ |
Changes to ext/fts3/fts3_write.c.
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58 59 60 61 62 63 64 | 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | - - - + + | /* #define FTS3_NODE_CHUNK_THRESHOLD 1 */ typedef struct PendingList PendingList; typedef struct SegmentNode SegmentNode; typedef struct SegmentWriter SegmentWriter; /* |
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126 127 128 129 130 131 132 | 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | - + + + + | */ int nTerm; /* Number of bytes in current term */ char *zTerm; /* Pointer to current term */ int nTermAlloc; /* Allocated size of zTerm buffer */ char *aDoclist; /* Pointer to doclist of current entry */ int nDoclist; /* Size of doclist in current entry */ |
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569 570 571 572 573 574 575 576 577 578 579 | 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 | + + + + + + + + + + - + | if( p!=*pp ){ *pp = p; return 1; } return 0; } /* ** Free a PendingList object allocated by fts3PendingListAppend(). */ static void fts3PendingListDelete(PendingList *pList){ sqlite3_free(pList); } /* ** Add an entry to one of the pending-terms hash tables. */ static int fts3PendingTermsAddOne( Fts3Table *p, int iCol, int iPos, |
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709 710 711 712 713 714 715 | 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 | - + + | */ void sqlite3Fts3PendingTermsClear(Fts3Table *p){ int i; for(i=0; i<p->nIndex; i++){ Fts3HashElem *pElem; Fts3Hash *pHash = &p->aIndex[i].hPending; for(pElem=fts3HashFirst(pHash); pElem; pElem=fts3HashNext(pElem)){ |
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1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 | 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 | + + - + - | assert( pReader->pBlob==0 ); if( bIncr && pReader->nPopulate<pReader->nNode ){ pReader->pBlob = p->pSegments; p->pSegments = 0; } pNext = pReader->aNode; } assert( !fts3SegReaderIsPending(pReader) ); rc = fts3SegReaderRequire(pReader, pNext, FTS3_VARINT_MAX*2); if( rc!=SQLITE_OK ) return rc; /* Because of the FTS3_NODE_PADDING bytes of padding, the following is |
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1161 1162 1163 1164 1165 1166 1167 | 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 | - - + + + + + + + + + + + - - - - + + + + + + - - - + + + - - - - - - - - - - + - - - - + - - + - - + + + + - - - - - - - - - - + + + + + + + + + + + - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + - - - - - + + + + + + + + + + | return SQLITE_OK; } /* ** Set the SegReader to point to the first docid in the doclist associated ** with the current term. */ |
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1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 | 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 | + + + + + + + + + + + + | int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0); if( rc==0 ){ if( pLhs->iDocid==pRhs->iDocid ){ rc = pRhs->iIdx - pLhs->iIdx; }else{ rc = (pLhs->iDocid > pRhs->iDocid) ? 1 : -1; } } assert( pLhs->aNode && pRhs->aNode ); return rc; } static int fts3SegReaderDoclistCmpRev(Fts3SegReader *pLhs, Fts3SegReader *pRhs){ int rc = (pLhs->pOffsetList==0)-(pRhs->pOffsetList==0); if( rc==0 ){ if( pLhs->iDocid==pRhs->iDocid ){ rc = pRhs->iIdx - pLhs->iIdx; }else{ rc = (pLhs->iDocid < pRhs->iDocid) ? 1 : -1; } } assert( pLhs->aNode && pRhs->aNode ); return rc; } /* ** Compare the term that the Fts3SegReader object passed as the first argument |
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2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 | 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 | + + + | Fts3MultiSegReader *pCsr, /* Cursor object */ int iCol, /* Column to match on. */ const char *zTerm, /* Term to iterate through a doclist for */ int nTerm /* Number of bytes in zTerm */ ){ int i; int nSegment = pCsr->nSegment; int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = ( p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp ); assert( pCsr->pFilter==0 ); assert( zTerm && nTerm>0 ); /* Advance each segment iterator until it points to the term zTerm/nTerm. */ for(i=0; i<nSegment; i++){ Fts3SegReader *pSeg = pCsr->apSegment[i]; |
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2311 2312 2313 2314 2315 2316 2317 | 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 | - + - + + + + | break; } } pCsr->nAdvance = i; /* Advance each of the segments to point to the first docid. */ for(i=0; i<pCsr->nAdvance; i++){ |
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2352 2353 2354 2355 2356 2357 2358 | 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 | - + - + - - + | }else{ int rc; char *pList; int nList; int j; sqlite3_int64 iDocid = apSegment[0]->iDocid; |
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2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 | 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 | + + + | int isColFilter = (pCsr->pFilter->flags & FTS3_SEGMENT_COLUMN_FILTER); int isPrefix = (pCsr->pFilter->flags & FTS3_SEGMENT_PREFIX); int isScan = (pCsr->pFilter->flags & FTS3_SEGMENT_SCAN); Fts3SegReader **apSegment = pCsr->apSegment; int nSegment = pCsr->nSegment; Fts3SegFilter *pFilter = pCsr->pFilter; int (*xCmp)(Fts3SegReader *, Fts3SegReader *) = ( p->bDescIdx ? fts3SegReaderDoclistCmpRev : fts3SegReaderDoclistCmp ); if( pCsr->nSegment==0 ) return SQLITE_OK; do { int nMerge; int i; |
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2479 2480 2481 2482 2483 2484 2485 | 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 | - + + + + - + - + - + - + + + + + + + + + + + + + - + - + - - - + | && apSegment[nMerge]->nTerm==pCsr->nTerm && 0==memcmp(pCsr->zTerm, apSegment[nMerge]->zTerm, pCsr->nTerm) ){ nMerge++; } assert( isIgnoreEmpty || (isRequirePos && !isColFilter) ); |
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2879 2880 2881 2882 2883 2884 2885 | 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 | - - - - - - - - - - - - - - + - - - - + | *pnByte = pDeferred->pList->nData; return pDeferred->pList->aData; } *pnByte = 0; return 0; } |
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Changes to test/fts3sort.test.
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17 18 19 20 21 22 23 | 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 | - - + - + + + + + + + + + + + + - - - - - - - + + + + + + + + + + + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + | # If SQLITE_ENABLE_FTS3 is defined, omit this file. ifcapable !fts3 { finish_test return } |