Overview
| Comment: | In the OBJECTS virtual table, efficiently check if you are trying to find only bizarro objects in the normal world or vice versa. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
4d77f3e034a5bd18a02050cbf4ed70dc |
| User & Date: | user on 2022-06-15 21:33:16 |
| Other Links: | manifest | tags |
Context
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2022-06-22
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| 22:40 | Start to implement move list encoding, to be used in future if coordinate input is implemented (and possibly other features that might benefit from this capability). check-in: 77553ee70b user: user tags: trunk | |
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2022-06-15
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| 21:33 | In the OBJECTS virtual table, efficiently check if you are trying to find only bizarro objects in the normal world or vice versa. check-in: 4d77f3e034 user: user tags: trunk | |
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2022-06-13
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| 23:57 | Implement MD5 hash algorithm. (This is not used in Free Hero Mesh, but may be used in other programs e.g. to compute the Z card in Fossil decks.) check-in: 2e44cdb36f user: user tags: trunk | |
Changes
Modified function.c from [d6030e09ca] to [e594635ab6].
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838 839 840 841 842 843 844 | 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 | - + | Uint32 t; cur->rowid=-1; cur->unique=0; cur->eof=0; cur->arg[0]=idxNum; cur->arg[1]=0; cur->arg[2]=cur->arg[3]=1; |
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897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 | 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 | + + + + + + |
break;
}
cur->rowid=objects[t]->up;
if(cur->rowid==VOIDLINK) cur->eof=1;
cur->unique=1;
}
break;
case 'h':
if(sqlite3_value_type(argv[i])==SQLITE_INTEGER) {
if(sqlite3_value_int64(argv[i])!=(pcur->pVtab==bizarro_vtab?1:0)) cur->eof=1;
}
break;
}
if(cur->unique) {
if(cur->rowid<0 || cur->rowid>=nobjects || !objects[cur->rowid]) cur->eof=1;
return SQLITE_OK;
}
if(cur->eof) return SQLITE_OK;
if(idxNum&0x0400) cur->arg[2]=pfwidth;
if(idxNum&0x4000) cur->arg[3]=pfheight;
if(cur->rowid==-1) cur->rowid=0;
return vt1_objects_next(pcur);
}
static int vt1_objects_index(sqlite3_vtab*vt,sqlite3_index_info*info) {
sqlite3_str*str=sqlite3_str_new(0);
sqlite3_value*v;
int arg=0;
int i,j;
info->estimatedCost=100000.0;
for(i=0;i<info->nConstraint;i++) if(info->aConstraint[i].usable) {
j=info->aConstraint[i].op;
switch(info->aConstraint[i].iColumn) {
case -1: case 0: // ID
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972 973 974 975 976 977 978 979 980 981 982 983 984 985 | 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 | + + + + + + + + + + + + + + + + + + + |
if(info->idxNum&0x0019) break;
if(j==SQLITE_INDEX_CONSTRAINT_IS && !(info->idxNum&0x000E)) {
info->idxNum|=0x0010;
info->aConstraintUsage[i].omit=1;
info->aConstraintUsage[i].argvIndex=++arg;
sqlite3_str_appendchar(str,1,'g');
info->estimatedCost/=80.0;
}
break;
case 12: // BIZARRO
if(j==SQLITE_INDEX_CONSTRAINT_EQ || j==SQLITE_INDEX_CONSTRAINT_IS) {
if(!sqlite3_vtab_rhs_value(info,i,&v) && sqlite3_value_type(v)==SQLITE_INTEGER && sqlite3_value_int64(v)!=(vt==bizarro_vtab?1:0)) {
empty:
info->idxNum=-1;
info->aConstraintUsage[i].omit=1;
info->idxFlags=SQLITE_INDEX_SCAN_UNIQUE;
info->estimatedCost=1.0;
info->estimatedRows=0;
info->orderByConsumed=1;
sqlite3_free(sqlite3_str_finish(str));
return SQLITE_OK;
} else {
info->aConstraintUsage[i].argvIndex=++arg;
sqlite3_str_appendchar(str,1,'h');
info->estimatedCost/=20.0;
}
}
break;
}
}
if(info->nOrderBy==1) {
if(info->aOrderBy->iColumn==0 && !info->aOrderBy->desc && !(info->idxNum&~0x0008)) info->orderByConsumed=1;
if(info->aOrderBy->iColumn==-1 && !info->aOrderBy->desc && !(info->idxNum&~0x0008)) info->orderByConsumed=1;
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