diff options
Diffstat (limited to 'src/backend/utils/adt/jsonb_util.c')
| -rw-r--r-- | src/backend/utils/adt/jsonb_util.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/backend/utils/adt/jsonb_util.c b/src/backend/utils/adt/jsonb_util.c index 4850569bb5e..d425f324038 100644 --- a/src/backend/utils/adt/jsonb_util.c +++ b/src/backend/utils/adt/jsonb_util.c @@ -1250,6 +1250,49 @@ JsonbHashScalarValue(const JsonbValue *scalarVal, uint32 *hash) } /* + * Hash a value to a 64-bit value, with a seed. Otherwise, similar to + * JsonbHashScalarValue. + */ +void +JsonbHashScalarValueExtended(const JsonbValue *scalarVal, uint64 *hash, + uint64 seed) +{ + uint64 tmp; + + switch (scalarVal->type) + { + case jbvNull: + tmp = seed + 0x01; + break; + case jbvString: + tmp = DatumGetUInt64(hash_any_extended((const unsigned char *) scalarVal->val.string.val, + scalarVal->val.string.len, + seed)); + break; + case jbvNumeric: + tmp = DatumGetUInt64(DirectFunctionCall2(hash_numeric_extended, + NumericGetDatum(scalarVal->val.numeric), + UInt64GetDatum(seed))); + break; + case jbvBool: + if (seed) + tmp = DatumGetUInt64(DirectFunctionCall2(hashcharextended, + BoolGetDatum(scalarVal->val.boolean), + UInt64GetDatum(seed))); + else + tmp = scalarVal->val.boolean ? 0x02 : 0x04; + + break; + default: + elog(ERROR, "invalid jsonb scalar type"); + break; + } + + *hash = ROTATE_HIGH_AND_LOW_32BITS(*hash); + *hash ^= tmp; +} + +/* * Are two scalar JsonbValues of the same type a and b equal? */ static bool |