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Defer building xInstToken() hash-table until it is to be used.

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FossilOrigin-Name: 9b005085ff4a53cda0a1dff0c836630d6d3b95b9c40658ffd2a886f3e1b37faa
This commit is contained in:
dan
2023-11-22 20:02:55 +00:00
parent 5c268bbf67
commit af54826e4a
5 changed files with 22 additions and 35 deletions
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24
ext/fts5/fts5_index.c
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@ -628,6 +628,8 @@ struct Fts5TokenMapToken {
};
struct Fts5TokenMap {
int bHashed; /* True once hashed */
int nEntryAlloc;
int nEntry;
Fts5TokenMapEntry *aEntry;
@ -6372,7 +6374,6 @@ static void fts5SetupPrefixIter(
** index contains all the doclists required, except for the one
** corresponding to the prefix itself. That one is extracted from the
** main term index here. */
assert( iIdx==0 || pMap==0 );
if( iIdx!=0 ){
int dummy = 0;
const int f2 = FTS5INDEX_QUERY_SKIPEMPTY|FTS5INDEX_QUERY_NOOUTPUT;
@ -6402,7 +6403,7 @@ static void fts5SetupPrefixIter(
*ppIter = p1;
}else{
if( iIdx==0 && p->pConfig->eDetail==FTS5_DETAIL_FULL ){
if( iIdx==0 && p->pConfig->eDetail==FTS5_DETAIL_FULL && bTokenscan ){
pMap = (Fts5TokenMap*)fts5IdxMalloc(p, sizeof(Fts5TokenMap));
}
assert( p->rc!=SQLITE_OK || (aBuf && pStruct) );
@ -6473,7 +6474,6 @@ static void fts5SetupPrefixIter(
pData->p = (u8*)&pData[1];
pData->nn = pData->szLeaf = doclist.n;
if( doclist.n ) memcpy(pData->p, doclist.p, doclist.n);
if( pMap ) fts5TokenMapHashify(p, pMap);
fts5MultiIterNew2(p, pData, pMap, bDesc, ppIter);
pMap = 0;
}
@ -6867,7 +6867,15 @@ int sqlite3Fts5IterToken(
const char **ppOut, int *pnOut
){
Fts5Iter *pIter = (Fts5Iter*)pIndexIter;
if( pIter->pTokenMap ){
Fts5TokenMap *pMap = pIter->pTokenMap;
if( pMap ){
if( pMap->bHashed==0 ){
Fts5Index *p = pIter->pIndex;
fts5TokenMapHashify(p, pMap);
if( p->rc ){
return fts5IndexReturn(p);
}
}
*ppOut = (const char*)fts5TokenMapLookup(
pIter->pTokenMap, pIndexIter->iRowid, iCol, iOff, pnOut
);
@ -6936,14 +6944,6 @@ int sqlite3Fts5IndexIterWriteTokendata(
return fts5IndexReturn(p);
}
int sqlite3Fts5IndexIterHashifyTokendata(Fts5IndexIter *pIndexIter){
Fts5Iter *pIter = (Fts5Iter*)pIndexIter;
if( pIter->pTokenMap ){
fts5TokenMapHashify(pIter->pIndex, pIter->pTokenMap);
}
return fts5IndexReturn(pIter->pIndex);
}
/*
** Close an iterator opened by an earlier call to sqlite3Fts5IndexQuery().
*/