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Commitb37bc65

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Creates the SubLink structure, and the Query->hasSubLink field,
with supporting code.Creates SubLink node in gram.y.psql.c patch for newatttypmod field.
1 parentc65ea0e commitb37bc65

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10 files changed

+205
-113
lines changed

10 files changed

+205
-113
lines changed

‎src/backend/nodes/copyfuncs.c‎

Lines changed: 27 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.31 1998/01/16 23:19:56 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.32 1998/01/17 04:53:07 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -892,6 +892,28 @@ _copyAggreg(Aggreg *from)
892892
returnnewnode;
893893
}
894894

895+
/* ----------------
896+
*_copySubLink
897+
* ----------------
898+
*/
899+
staticSubLink*
900+
_copySubLink(SubLink*from)
901+
{
902+
SubLink*newnode=makeNode(SubLink);
903+
904+
/* ----------------
905+
*copy remainder of node
906+
* ----------------
907+
*/
908+
newnode->subLinkType=from->subLinkType;
909+
newnode->useor=from->useor;
910+
Node_Copy(from,newnode,lefthand);
911+
Node_Copy(from,newnode,oper);
912+
Node_Copy(from,newnode,subselect);
913+
914+
returnnewnode;
915+
}
916+
895917
staticArray*
896918
_copyArray(Array*from)
897919
{
@@ -1517,6 +1539,7 @@ _copyQuery(Query *from)
15171539
Node_Copy(from,newnode,havingQual);
15181540

15191541
newnode->hasAggs=from->hasAggs;
1542+
newnode->hasSubLinks=from->hasSubLinks;
15201543

15211544
if (from->unionClause)
15221545
{
@@ -1673,6 +1696,9 @@ copyObject(void *from)
16731696
caseT_Aggreg:
16741697
retval=_copyAggreg(from);
16751698
break;
1699+
caseT_SubLink:
1700+
retval=_copySubLink(from);
1701+
break;
16761702

16771703
/*
16781704
* RELATION NODES

‎src/backend/nodes/outfuncs.c‎

Lines changed: 27 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.22 1998/01/16 23:19:59 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.23 1998/01/17 04:53:09 momjian Exp $
1111
*
1212
* NOTES
1313
* Every (plan) node in POSTGRES has an associated "out" routine which
@@ -230,6 +230,8 @@ _outQuery(StringInfo str, Query *node)
230230
_outNode(str,node->havingQual);
231231
appendStringInfo(str," :hasAggs ");
232232
appendStringInfo(str, (node->hasAggs ?"true" :"false"));
233+
appendStringInfo(str," :hasSubLinks ");
234+
appendStringInfo(str, (node->hasSubLinks ?"true" :"false"));
233235
appendStringInfo(str," :unionClause ");
234236
_outNode(str,node->unionClause);
235237
}
@@ -753,6 +755,27 @@ _outAggreg(StringInfo str, Aggreg *node)
753755
appendStringInfo(str,node->usenulls ?"true" :"false");
754756
}
755757

758+
/*
759+
*SubLink
760+
*/
761+
staticvoid
762+
_outSubLink(StringInfostr,SubLink*node)
763+
{
764+
charbuf[500];
765+
766+
appendStringInfo(str,"SUBLINK");
767+
sprintf(buf," :subLinkType %d ",node->subLinkType);
768+
appendStringInfo(str,buf);
769+
appendStringInfo(str," :useor ");
770+
appendStringInfo(str,node->useor ?"true" :"false");
771+
appendStringInfo(str," :lefthand ");
772+
_outNode(str,node->lefthand);
773+
appendStringInfo(str," :oper ");
774+
_outNode(str,node->oper);
775+
appendStringInfo(str," :subselect ");
776+
_outNode(str,node->subselect);
777+
}
778+
756779
/*
757780
*Array is a subclass of Expr
758781
*/
@@ -1648,6 +1671,9 @@ _outNode(StringInfo str, void *obj)
16481671
caseT_Aggreg:
16491672
_outAggreg(str,obj);
16501673
break;
1674+
caseT_SubLink:
1675+
_outSubLink(str,obj);
1676+
break;
16511677
caseT_Array:
16521678
_outArray(str,obj);
16531679
break;

‎src/backend/nodes/readfuncs.c‎

Lines changed: 44 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.18 1998/01/15 18:59:31 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.19 1998/01/17 04:53:11 momjian Exp $
1111
*
1212
* NOTES
1313
* Most of the read functions for plan nodes are tested. (In fact, they
@@ -156,6 +156,10 @@ _readQuery()
156156
token=lsptok(NULL,&length);/* get hasAggs */
157157
local_node->hasAggs= (token[0]=='t') ? true : false;
158158

159+
token=lsptok(NULL,&length);/* skip the :hasSubLinks */
160+
token=lsptok(NULL,&length);/* get hasSubLinks */
161+
local_node->hasSubLinks= (token[0]=='t') ? true : false;
162+
159163
token=lsptok(NULL,&length);/* skip :unionClause */
160164
local_node->unionClause=nodeRead(true);
161165

@@ -1151,6 +1155,41 @@ _readAggreg()
11511155
return (local_node);
11521156
}
11531157

1158+
/* ----------------
1159+
*_readSubLink
1160+
*
1161+
*SubLink is a subclass of Node
1162+
* ----------------
1163+
*/
1164+
staticSubLink*
1165+
_readSubLink()
1166+
{
1167+
SubLink*local_node;
1168+
char*token;
1169+
intlength;
1170+
1171+
local_node=makeNode(SubLink);
1172+
1173+
token=lsptok(NULL,&length);/* eat :subLinkType */
1174+
token=lsptok(NULL,&length);/* get subLinkType */
1175+
local_node->subLinkType=atoi(token);
1176+
1177+
token=lsptok(NULL,&length);/* eat :useor */
1178+
token=lsptok(NULL,&length);/* get useor */
1179+
local_node->useor= (token[0]=='t') ? true : false;
1180+
1181+
token=lsptok(NULL,&length);/* eat :lefthand */
1182+
local_node->lefthand=nodeRead(true);/* now read it */
1183+
1184+
token=lsptok(NULL,&length);/* eat :oper */
1185+
local_node->oper=nodeRead(true);/* now read it */
1186+
1187+
token=lsptok(NULL,&length);/* eat :subselect */
1188+
local_node->subselect=nodeRead(true);/* now read it */
1189+
1190+
return (local_node);
1191+
}
1192+
11541193
/*
11551194
*Stuff from execnodes.h
11561195
*/
@@ -1971,6 +2010,10 @@ parsePlanString(void)
19712010
{
19722011
return_value=_readAggreg();
19732012
}
2013+
elseif (!strncmp(token,"SUBLINK",6))
2014+
{
2015+
return_value=_readSubLink();
2016+
}
19742017
elseif (!strncmp(token,"AGG",3))
19752018
{
19762019
return_value=_readAgg();

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