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Commitb5b3e03

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DefineRelation: DEFAULT/CHECK handling
1 parent9e9584c commitb5b3e03

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1 file changed

+116
-25
lines changed

1 file changed

+116
-25
lines changed

‎src/backend/commands/creatinh.c

Lines changed: 116 additions & 25 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.13 1997/08/21 04:05:22 vadim Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.14 1997/08/22 03:03:56 vadim Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -35,7 +35,7 @@
3535

3636
staticintcheckAttrExists(char*attributeName,
3737
char*attributeType,List*schema);
38-
staticList*MergeAttributes(List*schema,List*supers);
38+
staticList*MergeAttributes(List*schema,List*supers,List**supconstr);
3939
staticvoidStoreCatalogInheritance(OidrelationId,List*supers);
4040

4141
/* ----------------------------------------------------------------
@@ -46,15 +46,16 @@ static void StoreCatalogInheritance(Oid relationId, List *supers);
4646
void
4747
DefineRelation(CreateStmt*stmt)
4848
{
49-
char*relname=palloc(NAMEDATALEN);
50-
List*schema=stmt->tableElts;
51-
intnumberOfAttributes;
52-
OidrelationId;
53-
chararchChar;
54-
List*inheritList=NULL;
55-
char*archiveName=NULL;
49+
char*relname=palloc(NAMEDATALEN);
50+
List*schema=stmt->tableElts;
51+
intnumberOfAttributes;
52+
OidrelationId;
53+
chararchChar;
54+
List*inheritList=NULL;
55+
char*archiveName=NULL;
5656
TupleDescdescriptor;
57-
intheaploc,archloc;
57+
List*constraints;
58+
intheaploc,archloc;
5859

5960
char*typename=NULL;/* the typename of this relation. not useod for now */
6061

@@ -116,7 +117,8 @@ DefineRelation(CreateStmt *stmt)
116117
*generate relation schema, including inherited attributes.
117118
* ----------------
118119
*/
119-
schema=MergeAttributes(schema,inheritList);
120+
schema=MergeAttributes(schema,inheritList,&constraints);
121+
constraints=nconc (constraints,stmt->constraints);
120122

121123
numberOfAttributes=length(schema);
122124
if (numberOfAttributes <=0) {
@@ -130,6 +132,55 @@ DefineRelation(CreateStmt *stmt)
130132
* ----------------
131133
*/
132134
descriptor=BuildDescForRelation(schema,relname);
135+
136+
if (constraints!=NIL )
137+
{
138+
List*entry;
139+
intnconstr=length (constraints);
140+
ConstrCheck*check= (ConstrCheck*)palloc (nconstr*sizeof (ConstrCheck));
141+
intncheck=0;
142+
inti;
143+
144+
foreach (entry,constraints)
145+
{
146+
ConstraintDef*cdef= (ConstraintDef*)lfirst (entry);
147+
148+
if (cdef->type==CONSTR_CHECK )
149+
{
150+
if (cdef->name!=NULL )
151+
{
152+
for (i=0;i<ncheck;i++)
153+
{
154+
if (strcmp (check[i].ccname,cdef->name)==0 )
155+
elog (WARN,"DefineRelation: name (%s) of CHECK constraint duplicated",cdef->name);
156+
}
157+
check[ncheck].ccname=cdef->name;
158+
}
159+
else
160+
{
161+
check[ncheck].ccname= (char*)palloc (NAMEDATALEN);
162+
sprintf (check[ncheck].ccname,"$%d",ncheck+1);
163+
}
164+
check[ncheck].ccbin=NULL;
165+
check[ncheck].ccsrc= (char*)cdef->def;
166+
ncheck++;
167+
}
168+
}
169+
if (ncheck>0 )
170+
{
171+
if (ncheck<nconstr )
172+
check= (ConstrCheck*)repalloc (check,ncheck*sizeof (ConstrCheck));
173+
if (descriptor->constr==NULL )
174+
{
175+
descriptor->constr= (TupleConstr*)palloc(sizeof(TupleConstr));
176+
descriptor->constr->num_defval=0;
177+
descriptor->constr->has_not_null= false;
178+
}
179+
descriptor->constr->num_check=ncheck;
180+
descriptor->constr->check=check;
181+
}
182+
}
183+
133184
relationId=heap_create(relname,
134185
typename,
135186
archChar,
@@ -138,11 +189,12 @@ DefineRelation(CreateStmt *stmt)
138189

139190
StoreCatalogInheritance(relationId,inheritList);
140191

141-
/*----------------
192+
/*
142193
*create an archive relation if necessary
143-
* ----------------
144194
*/
145-
if (archChar!='n') {
195+
if (archChar!='n')
196+
{
197+
TupleDesctupdesc;
146198
/*
147199
* Need to create an archive relation for this heap relation.
148200
* We cobble up the command by hand, and increment the command
@@ -152,12 +204,15 @@ DefineRelation(CreateStmt *stmt)
152204
CommandCounterIncrement();
153205
archiveName=MakeArchiveName(relationId);
154206

155-
relationId=heap_create(archiveName,
156-
typename,
157-
'n',/* archive isn't archived */
158-
archloc,
159-
descriptor);
207+
tupdesc=CreateTupleDescCopy (descriptor);/* get rid of constraints */
208+
(void)heap_create(archiveName,
209+
typename,
210+
'n',/* archive isn't archived */
211+
archloc,
212+
tupdesc);
160213

214+
FreeTupleDesc (tupdesc);
215+
FreeTupleDesc (descriptor);
161216
pfree(archiveName);
162217
}
163218
}
@@ -213,10 +268,11 @@ RemoveRelation(char *name)
213268
* stud_emp {7:percent}
214269
*/
215270
staticList*
216-
MergeAttributes(List*schema,List*supers)
271+
MergeAttributes(List*schema,List*supers,List**supconstr)
217272
{
218273
List*entry;
219274
List*inhSchema=NIL;
275+
List*constraints=NIL;
220276

221277
/*
222278
* Validates that there are no duplications.
@@ -258,6 +314,7 @@ MergeAttributes(List *schema, List *supers)
258314
List*partialResult=NIL;
259315
AttrNumberattrno;
260316
TupleDesctupleDesc;
317+
TupleConstr*constr;
261318

262319
relation=heap_openr(name);
263320
if (relation==NULL) {
@@ -271,12 +328,12 @@ MergeAttributes(List *schema, List *supers)
271328
name);
272329
}
273330
tupleDesc=RelationGetTupleDescriptor(relation);
331+
constr=tupleDesc->constr;
274332

275333
for (attrno=relation->rd_rel->relnatts-1;attrno >=0;attrno--) {
276334
AttributeTupleFormattribute=tupleDesc->attrs[attrno];
277335
char*attributeName;
278336
char*attributeType;
279-
TupleConstrconstraints;
280337
HeapTupletuple;
281338
ColumnDef*def;
282339
TypeName*typename;
@@ -285,7 +342,6 @@ MergeAttributes(List *schema, List *supers)
285342
* form name, type and constraints
286343
*/
287344
attributeName= (attribute->attname).data;
288-
constraints.has_not_null=attribute->attnotnull;
289345
tuple=
290346
SearchSysCacheTuple(TYPOID,
291347
ObjectIdGetDatum(attribute->atttypid),
@@ -313,10 +369,46 @@ MergeAttributes(List *schema, List *supers)
313369
def->colname=pstrdup(attributeName);
314370
typename->name=pstrdup(attributeType);
315371
def->typename=typename;
316-
def->is_not_null=constraints.has_not_null;
372+
def->is_not_null=attribute->attnotnull;
373+
def->defval=NULL;
374+
if (attribute->atthasdef )
375+
{
376+
AttrDefault*attrdef=constr->defval;
377+
inti;
378+
379+
Assert (constr!=NULL&&constr->num_defval>0 );
380+
381+
for (i=0;i<constr->num_defval;i++)
382+
{
383+
if (attrdef[i].adnum!=attrno+1 )
384+
continue;
385+
def->defval=pstrdup (attrdef[i].adsrc);
386+
break;
387+
}
388+
Assert (def->defval!=NULL );
389+
}
317390
partialResult=lcons(def,partialResult);
318391
}
319392

393+
if (constr&&constr->num_check>0 )
394+
{
395+
ConstrCheck*check=constr->check;
396+
inti;
397+
398+
for (i=0;i<constr->num_check;i++)
399+
{
400+
ConstraintDef*cdef= (ConstraintDef*)palloc (sizeof (ConstraintDef));
401+
402+
cdef->type=CONSTR_CHECK;
403+
if (check[i].ccname[0]=='$' )
404+
cdef->name=NULL;
405+
else
406+
cdef->name=pstrdup (check[i].ccname);
407+
cdef->def= (void*)pstrdup (check[i].ccsrc);
408+
constraints=lappend (constraints,cdef);
409+
}
410+
}
411+
320412
/*
321413
* iteration cleanup and result collection
322414
*/
@@ -333,7 +425,7 @@ MergeAttributes(List *schema, List *supers)
333425
* put the inherited schema before our the schema for this table
334426
*/
335427
schema=nconc(inhSchema,schema);
336-
428+
*supconstr=constraints;
337429
return (schema);
338430
}
339431

@@ -557,4 +649,3 @@ MakeArchiveName(Oid relationId)
557649

558650
returnarch;
559651
}
560-

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