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/*------------------------------------------------------------------------- * * valid.h * POSTGRES tuple qualification validity definitions. * * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/access/valid.h * *------------------------------------------------------------------------- */ #ifndef VALID_H #define VALID_H /* * HeapKeyTest * * Test a heap tuple to see if it satisfies a scan key. */ #define HeapKeyTest(tuple, \ tupdesc, \ nkeys, \ keys, \ result) \ do \ { \ /* Use underscores to protect the variables passed in as parameters */ \ int __cur_nkeys = (nkeys); \ ScanKey __cur_keys = (keys); \ \ (result) = true; /* may change */ \ for (; __cur_nkeys--; __cur_keys++) \ { \ Datum __atp; \ bool __isnull; \ Datum __test; \ \ if (__cur_keys->sk_flags & SK_ISNULL) \ { \ (result) = false; \ break; \ } \ \ __atp = heap_getattr((tuple), \ __cur_keys->sk_attno, \ (tupdesc), \ &__isnull); \ \ if (__isnull) \ { \ (result) = false; \ break; \ } \ \ __test = FunctionCall2Coll(&__cur_keys->sk_func, \ __cur_keys->sk_collation, \ __atp, __cur_keys->sk_argument); \ \ if (!DatumGetBool(__test)) \ { \ (result) = false; \ break; \ } \ } \ } while (0) #endif /* VALID_H */