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Clean up overly complex code for issuing some related error messages.

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The original version was unreadable, and not mechanically checkable
either.
This commit is contained in:
Tom Lane 2011-03-29 17:54:27 -04:00
parent 11745364d0
commit 9a8b73147c
1 changed files with 26 additions and 15 deletions
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37
src/backend/commands/tablecmds.c
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@ -3944,21 +3944,32 @@ find_composite_type_dependencies(Oid typeOid, Relation origRelation,
if (rel->rd_rel->relkind == RELKIND_RELATION)
{
const char *msg;
if (origTypeName
|| origRelation->rd_rel->relkind == RELKIND_COMPOSITE_TYPE)
msg = gettext_noop("cannot alter type \"%s\" because column \"%s\".\"%s\" uses it");
else if (origRelation->rd_rel->relkind == RELKIND_FOREIGN_TABLE)
msg = gettext_noop("cannot alter foreign table \"%s\" because column \"%s\".\"%s\" uses its rowtype");
else
msg = gettext_noop("cannot alter table \"%s\" because column \"%s\".\"%s\" uses its rowtype");
if (origTypeName)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg(msg,
origTypeName ? origTypeName
: RelationGetRelationName(origRelation),
errmsg("cannot alter type \"%s\" because column \"%s\".\"%s\" uses it",
origTypeName,
RelationGetRelationName(rel),
NameStr(att->attname))));
else if (origRelation->rd_rel->relkind == RELKIND_COMPOSITE_TYPE)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot alter type \"%s\" because column \"%s\".\"%s\" uses it",
RelationGetRelationName(origRelation),
RelationGetRelationName(rel),
NameStr(att->attname))));
else if (origRelation->rd_rel->relkind == RELKIND_FOREIGN_TABLE)
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot alter foreign table \"%s\" because column \"%s\".\"%s\" uses its rowtype",
RelationGetRelationName(origRelation),
RelationGetRelationName(rel),
NameStr(att->attname))));
else
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot alter table \"%s\" because column \"%s\".\"%s\" uses its rowtype",
RelationGetRelationName(origRelation),
RelationGetRelationName(rel),
NameStr(att->attname))));
}