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Add DOMAIN check constraints.

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Rod Taylor
This commit is contained in:
Bruce Momjian
2002-11-15 02:50:21 +00:00
parent 2986aa6a66
commit 6b603e67dc
29 changed files with 641 additions and 147 deletions
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57
src/backend/parser/parse_expr.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.129 2002/09/18 21:35:22 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.130 2002/11/15 02:50:09 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -20,6 +20,7 @@
#include "miscadmin.h"
#include "nodes/makefuncs.h"
#include "nodes/params.h"
#include "optimizer/clauses.h"
#include "parser/analyze.h"
#include "parser/gramparse.h"
#include "parser/parse.h"
@@ -83,7 +84,7 @@ parse_expr_init(void)
* input and output of transformExpr; see SubLink for example.
*/
Node *
transformExpr(ParseState *pstate, Node *expr)
transformExpr(ParseState *pstate, Node *expr, ConstraintTestValue *domVal)
{
Node *result = NULL;
@@ -152,7 +153,7 @@ transformExpr(ParseState *pstate, Node *expr)
ExprFieldSelect *efs = (ExprFieldSelect *) expr;
List *fields;
result = transformExpr(pstate, efs->arg);
result = transformExpr(pstate, efs->arg, domVal);
/* handle qualification, if any */
foreach(fields, efs->fields)
{
@@ -169,7 +170,7 @@ transformExpr(ParseState *pstate, Node *expr)
case T_TypeCast:
{
TypeCast *tc = (TypeCast *) expr;
Node *arg = transformExpr(pstate, tc->arg);
Node *arg = transformExpr(pstate, tc->arg, domVal);
result = typecast_expression(arg, tc->typename);
break;
@@ -204,14 +205,14 @@ transformExpr(ParseState *pstate, Node *expr)
n->arg = a->lexpr;
result = transformExpr(pstate,
(Node *) n);
(Node *) n, domVal);
}
else
{
Node *lexpr = transformExpr(pstate,
a->lexpr);
a->lexpr, domVal);
Node *rexpr = transformExpr(pstate,
a->rexpr);
a->rexpr, domVal);
result = (Node *) make_op(a->name,
lexpr,
@@ -222,9 +223,9 @@ transformExpr(ParseState *pstate, Node *expr)
case AND:
{
Node *lexpr = transformExpr(pstate,
a->lexpr);
a->lexpr, domVal);
Node *rexpr = transformExpr(pstate,
a->rexpr);
a->rexpr, domVal);
Expr *expr = makeNode(Expr);
lexpr = coerce_to_boolean(lexpr, "AND");
@@ -239,9 +240,9 @@ transformExpr(ParseState *pstate, Node *expr)
case OR:
{
Node *lexpr = transformExpr(pstate,
a->lexpr);
a->lexpr, domVal);
Node *rexpr = transformExpr(pstate,
a->rexpr);
a->rexpr, domVal);
Expr *expr = makeNode(Expr);
lexpr = coerce_to_boolean(lexpr, "OR");
@@ -256,7 +257,7 @@ transformExpr(ParseState *pstate, Node *expr)
case NOT:
{
Node *rexpr = transformExpr(pstate,
a->rexpr);
a->rexpr, domVal);
Expr *expr = makeNode(Expr);
rexpr = coerce_to_boolean(rexpr, "NOT");
@@ -270,9 +271,9 @@ transformExpr(ParseState *pstate, Node *expr)
case DISTINCT:
{
Node *lexpr = transformExpr(pstate,
a->lexpr);
a->lexpr, domVal);
Node *rexpr = transformExpr(pstate,
a->rexpr);
a->rexpr, domVal);
result = (Node *) make_op(a->name,
lexpr,
@@ -293,7 +294,7 @@ transformExpr(ParseState *pstate, Node *expr)
* Will result in a boolean constant node.
*/
Node *lexpr = transformExpr(pstate,
a->lexpr);
a->lexpr, domVal);
ltype = exprType(lexpr);
foreach(telem, (List *) a->rexpr)
@@ -317,7 +318,7 @@ transformExpr(ParseState *pstate, Node *expr)
n->val.val.str = (matched ? "t" : "f");
n->typename = SystemTypeName("bool");
result = transformExpr(pstate, (Node *) n);
result = transformExpr(pstate, (Node *) n, domVal);
}
break;
}
@@ -331,7 +332,7 @@ transformExpr(ParseState *pstate, Node *expr)
/* transform the list of arguments */
foreach(args, fn->args)
lfirst(args) = transformExpr(pstate,
(Node *) lfirst(args));
(Node *) lfirst(args), domVal);
result = ParseFuncOrColumn(pstate,
fn->funcname,
fn->args,
@@ -405,7 +406,7 @@ transformExpr(ParseState *pstate, Node *expr)
List *elist;
foreach(elist, left_list)
lfirst(elist) = transformExpr(pstate, lfirst(elist));
lfirst(elist) = transformExpr(pstate, lfirst(elist), domVal);
Assert(IsA(sublink->oper, A_Expr));
op = ((A_Expr *) sublink->oper)->name;
@@ -504,7 +505,7 @@ transformExpr(ParseState *pstate, Node *expr)
warg = (Node *) makeSimpleA_Expr(OP, "=",
c->arg, warg);
}
neww->expr = transformExpr(pstate, warg);
neww->expr = transformExpr(pstate, warg, domVal);
neww->expr = coerce_to_boolean(neww->expr, "CASE/WHEN");
@@ -520,7 +521,7 @@ transformExpr(ParseState *pstate, Node *expr)
n->val.type = T_Null;
warg = (Node *) n;
}
neww->result = transformExpr(pstate, warg);
neww->result = transformExpr(pstate, warg, domVal);
newargs = lappend(newargs, neww);
typeids = lappendi(typeids, exprType(neww->result));
@@ -544,7 +545,7 @@ transformExpr(ParseState *pstate, Node *expr)
n->val.type = T_Null;
defresult = (Node *) n;
}
newc->defresult = transformExpr(pstate, defresult);
newc->defresult = transformExpr(pstate, defresult, domVal);
/*
* Note: default result is considered the most significant
@@ -580,7 +581,7 @@ transformExpr(ParseState *pstate, Node *expr)
{
NullTest *n = (NullTest *) expr;
n->arg = transformExpr(pstate, n->arg);
n->arg = transformExpr(pstate, n->arg, domVal);
/* the argument can be any type, so don't coerce it */
result = expr;
break;
@@ -617,7 +618,7 @@ transformExpr(ParseState *pstate, Node *expr)
clausename = NULL; /* keep compiler quiet */
}
b->arg = transformExpr(pstate, b->arg);
b->arg = transformExpr(pstate, b->arg, domVal);
b->arg = coerce_to_boolean(b->arg, clausename);
@@ -625,6 +626,13 @@ transformExpr(ParseState *pstate, Node *expr)
break;
}
case T_DomainConstraintValue:
{
result = (Node *) copyObject(domVal);
break;
}
/*********************************************
* Quietly accept node types that may be presented when we are
* called on an already-transformed tree.
@@ -936,6 +944,9 @@ exprType(Node *expr)
case T_ConstraintTest:
type = exprType(((ConstraintTest *) expr)->arg);
break;
case T_ConstraintTestValue:
type = ((ConstraintTestValue *) expr)->typeId;
break;
default:
elog(ERROR, "exprType: Do not know how to get type for %d node",
nodeTag(expr));