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add fuzzy search

This commit is contained in:
yihaoDeng 2022-03-30 21:36:39 +08:00
parent a915647df8
commit 27280fe292
1 changed files with 32 additions and 1 deletions
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33
source/libs/index/src/indexFstDfa.c
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@ -119,7 +119,38 @@ bool dfaBuilderRunState(FstDfaBuilder *builder, FstSparseSet *cur, FstSparseSet
}
bool dfaBuilderCachedState(FstDfaBuilder *builder, FstSparseSet *set, uint32_t *result) {
// impl cache state
SArray *tinsts = taosArrayInit(4, sizeof(uint32_t));
bool isMatch = false;
for (int i = 0; i < sparSetLen(set); i++) {
uint32_t ip = sparSetGet(set, i);
Inst *inst = taosArrayGet(builder->dfa->insts, ip);
if (inst->ty == JUMP || inst->ty == SPLIT) {
continue;
} else if (inst->ty == RANGE) {
taosArrayPush(tinsts, &ip);
} else if (inst->ty == MATCH) {
isMatch = true;
taosArrayPush(tinsts, &ip);
}
}
if (taosArrayGetSize(tinsts) == 0) {
return false;
}
uint32_t *v = taosHashGet(builder->cache, &tinsts, sizeof(POINTER_BYTES));
if (v != NULL) {
*result = *v;
taosArrayDestroy(tinsts);
} else {
State st;
st.insts = tinsts;
st.isMatch = isMatch;
taosArrayPush(builder->dfa->states, &st);
int32_t sz = taosArrayGetSize(builder->dfa->states) - 1;
taosHashPut(builder->cache, &tinsts, sizeof(POINTER_BYTES), &sz, sizeof(sz));
*result = sz;
}
return true;
}