init

db_include/access/valid.h

@@ -0,0 +1,69 @@
+/*-------------------------------------------------------------------------
+ *
+ * valid.h
+ *	  POSTGRES tuple qualification validity definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2021, 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 */