Add DOMAIN check constraints.

Rod Taylor

src/include/nodes/parsenodes.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: parsenodes.h,v 1.213 2002/11/13 00:44:09 momjian Exp $
+ * $Id: parsenodes.h,v 1.214 2002/11/15 02:50:12 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -285,9 +285,26 @@ typedef struct ConstraintTest
 	Node	   *arg;			/* input expression */
 	ConstraintTestType testtype;	/* test type */
 	char	   *name;			/* name of constraint (for error msgs) */
+	char	   *domname; 		/* name of domain (for error messages) */
 	Node	   *check_expr;		/* for CHECK test, a boolean expression */
 } ConstraintTest;
 
+/*
+ * Placeholder node for the value to be processed by a domains
+ * check constraint.
+ */
+typedef struct DomainConstraintValue
+{
+	NodeTag		type;
+} DomainConstraintValue;
+
+typedef struct ConstraintTestValue
+{
+	NodeTag		type;
+	Oid			typeId;
+	int32		typeMod;
+} ConstraintTestValue;
+
 /*
  * ColumnDef - column definition (used in various creates)
  *