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Improved support functions for HNSW - #527

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This commit is contained in:
Andrew Kane
2024-04-25 13:00:40 -07:00
parent 2bf1175ab0
commit 47d5b2896e
7 changed files with 104 additions and 107 deletions
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96
src/hnswutils.c
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@@ -173,15 +173,6 @@ HnswCheckNorm(FmgrInfo *procinfo, Oid collation, Datum value)
return DatumGetFloat8(FunctionCall1Coll(procinfo, collation, value)) > 0;
}
/*
* Check if a value can be indexed
*/
void
HnswCheckValue(FmgrInfo *procinfo, Oid collation, Datum value)
{
FunctionCall1Coll(procinfo, collation, value);
}
/*
* New buffer
*/
@@ -1276,35 +1267,68 @@ HnswFindElementNeighbors(char *base, HnswElement element, HnswElement entryPoint
}
}
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_halfvec_max_dims);
Datum
hnsw_halfvec_max_dims(PG_FUNCTION_ARGS)
static void
SparsevecCheckValue(Pointer v)
{
PG_RETURN_INT32(HNSW_MAX_DIM * 2);
};
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_bit_max_dims);
Datum
hnsw_bit_max_dims(PG_FUNCTION_ARGS)
{
PG_RETURN_INT32(HNSW_MAX_DIM * 32);
};
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_sparsevec_max_dims);
Datum
hnsw_sparsevec_max_dims(PG_FUNCTION_ARGS)
{
PG_RETURN_INT32(SPARSEVEC_MAX_DIM);
};
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_sparsevec_check_value);
Datum
hnsw_sparsevec_check_value(PG_FUNCTION_ARGS)
{
SparseVector *vec = PG_GETARG_SPARSEVEC_P(0);
SparseVector *vec = (SparseVector *) v;
if (vec->nnz > HNSW_MAX_NNZ)
elog(ERROR, "sparsevec cannot have more than %d non-zero elements for hnsw index", HNSW_MAX_NNZ);
PG_RETURN_VOID();
}
/*
* Get type info
*/
const HnswTypeInfo *
HnswGetTypeInfo(Relation index)
{
FmgrInfo *procinfo = HnswOptionalProcInfo(index, HNSW_TYPE_INFO_PROC);
if (procinfo == NULL)
{
static const HnswTypeInfo typeInfo = {
.maxDimensions = HNSW_MAX_DIM,
.checkValue = NULL
};
return (&typeInfo);
}
else
return (const HnswTypeInfo *) DatumGetPointer(FunctionCall0Coll(procinfo, InvalidOid));
}
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_halfvec_support);
Datum
hnsw_halfvec_support(PG_FUNCTION_ARGS)
{
static const HnswTypeInfo typeInfo = {
.maxDimensions = HNSW_MAX_DIM * 2,
.checkValue = NULL
};
PG_RETURN_POINTER(&typeInfo);
};
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_bit_support);
Datum
hnsw_bit_support(PG_FUNCTION_ARGS)
{
static const HnswTypeInfo typeInfo = {
.maxDimensions = HNSW_MAX_DIM * 32,
.checkValue = NULL
};
PG_RETURN_POINTER(&typeInfo);
};
PGDLLEXPORT PG_FUNCTION_INFO_V1(hnsw_sparsevec_support);
Datum
hnsw_sparsevec_support(PG_FUNCTION_ARGS)
{
static const HnswTypeInfo typeInfo = {
.maxDimensions = SPARSEVEC_MAX_DIM,
.checkValue = SparsevecCheckValue
};
PG_RETURN_POINTER(&typeInfo);
};