From 7eca575d1c28f6eee2bf4564f3d458d10c4a8f47 Mon Sep 17 00:00:00 2001 From: Alvaro Herrera Date: Tue, 23 Dec 2014 09:06:44 -0300 Subject: [PATCH] get_object_address: separate domain constraints from table constraints Apart from enabling comments on domain constraints, this enables a future project to replicate object dropping to remote servers: with the current mechanism there's no way to distinguish between the two types of constraints, so there's no way to know what to drop. Also added support for the domain constraint comments in psql's \dd and pg_dump. Catalog version bumped due to the change in ObjectType enum. --- doc/src/sgml/ref/comment.sgml | 14 +++++++++++ src/backend/catalog/objectaddress.c | 26 +++++++++++++++++---- src/backend/commands/alter.c | 3 ++- src/backend/commands/event_trigger.c | 3 ++- src/backend/commands/tablecmds.c | 2 +- src/backend/parser/gram.y | 18 +++++++++++---- src/backend/parser/parse_utilcmd.c | 2 +- src/backend/tcop/utility.c | 5 ++-- src/bin/pg_dump/pg_dump.c | 17 ++++++++++++++ src/bin/psql/describe.c | 27 ++++++++++++++++++++-- src/include/nodes/parsenodes.h | 3 ++- src/test/regress/input/constraints.source | 21 +++++++++++++++++ src/test/regress/output/constraints.source | 19 +++++++++++++++ 13 files changed, 141 insertions(+), 19 deletions(-) diff --git a/doc/src/sgml/ref/comment.sgml b/doc/src/sgml/ref/comment.sgml index 36a7312056..62e1968c08 100644 --- a/doc/src/sgml/ref/comment.sgml +++ b/doc/src/sgml/ref/comment.sgml @@ -28,6 +28,7 @@ COMMENT ON COLLATION object_name | COLUMN relation_name.column_name | CONSTRAINT constraint_name ON table_name | + CONSTRAINT constraint_name ON DOMAIN domain_name | CONVERSION object_name | DATABASE object_name | DOMAIN object_name | @@ -126,6 +127,18 @@ COMMENT ON + + table_name + domain_name + + + When creating a comment on a constraint on a table or a domain, these + parameteres specify the name of the table or domain on which the + constraint is defined. + + + + source_type @@ -266,6 +279,7 @@ COMMENT ON COLLATION "fr_CA" IS 'Canadian French'; COMMENT ON COLUMN my_table.my_column IS 'Employee ID number'; COMMENT ON CONVERSION my_conv IS 'Conversion to UTF8'; COMMENT ON CONSTRAINT bar_col_cons ON bar IS 'Constrains column col'; +COMMENT ON CONSTRAINT dom_col_constr ON DOMAIN dom IS 'Constrains col of domain'; COMMENT ON DATABASE my_database IS 'Development Database'; COMMENT ON DOMAIN my_domain IS 'Email Address Domain'; COMMENT ON EXTENSION hstore IS 'implements the hstore data type'; diff --git a/src/backend/catalog/objectaddress.c b/src/backend/catalog/objectaddress.c index e261307e9d..297deb5f3f 100644 --- a/src/backend/catalog/objectaddress.c +++ b/src/backend/catalog/objectaddress.c @@ -530,11 +530,28 @@ get_object_address(ObjectType objtype, List *objname, List *objargs, break; case OBJECT_RULE: case OBJECT_TRIGGER: - case OBJECT_CONSTRAINT: + case OBJECT_TABCONSTRAINT: case OBJECT_POLICY: address = get_object_address_relobject(objtype, objname, &relation, missing_ok); break; + case OBJECT_DOMCONSTRAINT: + { + List *domname; + ObjectAddress domaddr; + char *constrname; + + domname = list_truncate(list_copy(objname), list_length(objname) - 1); + constrname = strVal(llast(objname)); + domaddr = get_object_address_type(OBJECT_DOMAIN, domname, missing_ok); + + address.classId = ConstraintRelationId; + address.objectId = get_domain_constraint_oid(domaddr.objectId, + constrname, missing_ok); + address.objectSubId = 0; + + } + break; case OBJECT_DATABASE: case OBJECT_EXTENSION: case OBJECT_TABLESPACE: @@ -934,7 +951,7 @@ get_object_address_relobject(ObjectType objtype, List *objname, const char *depname; /* Extract name of dependent object. */ - depname = strVal(lfirst(list_tail(objname))); + depname = strVal(llast(objname)); /* Separate relation name from dependent object name. */ nnames = list_length(objname); @@ -990,7 +1007,7 @@ get_object_address_relobject(ObjectType objtype, List *objname, get_trigger_oid(reloid, depname, missing_ok) : InvalidOid; address.objectSubId = 0; break; - case OBJECT_CONSTRAINT: + case OBJECT_TABCONSTRAINT: address.classId = ConstraintRelationId; address.objectId = relation ? get_relation_constraint_oid(reloid, depname, missing_ok) : @@ -1178,7 +1195,7 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address, case OBJECT_RULE: case OBJECT_TRIGGER: case OBJECT_POLICY: - case OBJECT_CONSTRAINT: + case OBJECT_TABCONSTRAINT: if (!pg_class_ownercheck(RelationGetRelid(relation), roleid)) aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_CLASS, RelationGetRelationName(relation)); @@ -1191,6 +1208,7 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address, case OBJECT_TYPE: case OBJECT_DOMAIN: case OBJECT_ATTRIBUTE: + case OBJECT_DOMCONSTRAINT: if (!pg_type_ownercheck(address.objectId, roleid)) aclcheck_error_type(ACLCHECK_NOT_OWNER, address.objectId); break; diff --git a/src/backend/commands/alter.c b/src/backend/commands/alter.c index c9a9bafef7..e7f4ef3e8e 100644 --- a/src/backend/commands/alter.c +++ b/src/backend/commands/alter.c @@ -305,7 +305,8 @@ ExecRenameStmt(RenameStmt *stmt) { switch (stmt->renameType) { - case OBJECT_CONSTRAINT: + case OBJECT_TABCONSTRAINT: + case OBJECT_DOMCONSTRAINT: return RenameConstraint(stmt); case OBJECT_DATABASE: diff --git a/src/backend/commands/event_trigger.c b/src/backend/commands/event_trigger.c index 8b88ecb359..6bdb774987 100644 --- a/src/backend/commands/event_trigger.c +++ b/src/backend/commands/event_trigger.c @@ -1053,10 +1053,10 @@ EventTriggerSupportsObjectType(ObjectType obtype) case OBJECT_ATTRIBUTE: case OBJECT_CAST: case OBJECT_COLUMN: - case OBJECT_CONSTRAINT: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_DOMAIN: + case OBJECT_DOMCONSTRAINT: case OBJECT_EXTENSION: case OBJECT_FDW: case OBJECT_FOREIGN_SERVER: @@ -1073,6 +1073,7 @@ EventTriggerSupportsObjectType(ObjectType obtype) case OBJECT_RULE: case OBJECT_SCHEMA: case OBJECT_SEQUENCE: + case OBJECT_TABCONSTRAINT: case OBJECT_TABLE: case OBJECT_TRIGGER: case OBJECT_TSCONFIGURATION: diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index 81c5ab27c9..3c0cdea265 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -2457,7 +2457,7 @@ RenameConstraint(RenameStmt *stmt) Oid relid = InvalidOid; Oid typid = InvalidOid; - if (stmt->relationType == OBJECT_DOMAIN) + if (stmt->renameType == OBJECT_DOMCONSTRAINT) { Relation rel; HeapTuple tup; diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index 1f4fe9d494..6431601c66 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -5572,6 +5572,7 @@ opt_restart_seqs: * CAST ( AS ) | * COLUMN . | * CONSTRAINT ON | + * CONSTRAINT ON DOMAIN | * FUNCTION (arg1, arg2, ...) | * LARGE OBJECT | * OPERATOR (leftoperand_typ, rightoperand_typ) | @@ -5623,12 +5624,21 @@ CommentStmt: | COMMENT ON CONSTRAINT name ON any_name IS comment_text { CommentStmt *n = makeNode(CommentStmt); - n->objtype = OBJECT_CONSTRAINT; + n->objtype = OBJECT_TABCONSTRAINT; n->objname = lappend($6, makeString($4)); n->objargs = NIL; n->comment = $8; $$ = (Node *) n; } + | COMMENT ON CONSTRAINT name ON DOMAIN_P any_name IS comment_text + { + CommentStmt *n = makeNode(CommentStmt); + n->objtype = OBJECT_DOMCONSTRAINT; + n->objname = lappend($7, makeString($4)); + n->objargs = NIL; + n->comment = $9; + $$ = (Node *) n; + } | COMMENT ON POLICY name ON any_name IS comment_text { CommentStmt *n = makeNode(CommentStmt); @@ -7355,8 +7365,7 @@ RenameStmt: ALTER AGGREGATE func_name aggr_args RENAME TO name | ALTER DOMAIN_P any_name RENAME CONSTRAINT name TO name { RenameStmt *n = makeNode(RenameStmt); - n->renameType = OBJECT_CONSTRAINT; - n->relationType = OBJECT_DOMAIN; + n->renameType = OBJECT_DOMCONSTRAINT; n->object = $3; n->subname = $6; n->newname = $8; @@ -7624,8 +7633,7 @@ RenameStmt: ALTER AGGREGATE func_name aggr_args RENAME TO name | ALTER TABLE relation_expr RENAME CONSTRAINT name TO name { RenameStmt *n = makeNode(RenameStmt); - n->renameType = OBJECT_CONSTRAINT; - n->relationType = OBJECT_TABLE; + n->renameType = OBJECT_TABCONSTRAINT; n->relation = $3; n->subname = $6; n->newname = $8; diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c index b9fbb5b6ef..a85327df2c 100644 --- a/src/backend/parser/parse_utilcmd.c +++ b/src/backend/parser/parse_utilcmd.c @@ -896,7 +896,7 @@ transformTableLikeClause(CreateStmtContext *cxt, TableLikeClause *table_like_cla { CommentStmt *stmt = makeNode(CommentStmt); - stmt->objtype = OBJECT_CONSTRAINT; + stmt->objtype = OBJECT_TABCONSTRAINT; stmt->objname = list_make3(makeString(cxt->relation->schemaname), makeString(cxt->relation->relname), makeString(n->conname)); diff --git a/src/backend/tcop/utility.c b/src/backend/tcop/utility.c index aa8fe880d7..71580e8ec5 100644 --- a/src/backend/tcop/utility.c +++ b/src/backend/tcop/utility.c @@ -1589,9 +1589,6 @@ AlterObjectTypeCommandTag(ObjectType objtype) case OBJECT_COLUMN: tag = "ALTER TABLE"; break; - case OBJECT_CONSTRAINT: - tag = "ALTER TABLE"; - break; case OBJECT_CONVERSION: tag = "ALTER CONVERSION"; break; @@ -1599,6 +1596,7 @@ AlterObjectTypeCommandTag(ObjectType objtype) tag = "ALTER DATABASE"; break; case OBJECT_DOMAIN: + case OBJECT_DOMCONSTRAINT: tag = "ALTER DOMAIN"; break; case OBJECT_EXTENSION: @@ -1650,6 +1648,7 @@ AlterObjectTypeCommandTag(ObjectType objtype) tag = "ALTER SEQUENCE"; break; case OBJECT_TABLE: + case OBJECT_TABCONSTRAINT: tag = "ALTER TABLE"; break; case OBJECT_TABLESPACE: diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c index 4175ddc823..6658fda83e 100644 --- a/src/bin/pg_dump/pg_dump.c +++ b/src/bin/pg_dump/pg_dump.c @@ -9261,6 +9261,23 @@ dumpDomain(Archive *fout, DumpOptions *dopt, TypeInfo *tyinfo) tyinfo->dobj.namespace->dobj.name, tyinfo->rolname, tyinfo->typacl); + /* Dump any per-constraint comments */ + for (i = 0; i < tyinfo->nDomChecks; i++) + { + ConstraintInfo *domcheck = &(tyinfo->domChecks[i]); + PQExpBuffer labelq = createPQExpBuffer(); + + appendPQExpBuffer(labelq, "CONSTRAINT %s ", + fmtId(domcheck->dobj.name)); + appendPQExpBuffer(labelq, "ON DOMAIN %s", + fmtId(qtypname)); + dumpComment(fout, dopt, labelq->data, + tyinfo->dobj.namespace->dobj.name, + tyinfo->rolname, + domcheck->dobj.catId, 0, tyinfo->dobj.dumpId); + destroyPQExpBuffer(labelq); + } + destroyPQExpBuffer(q); destroyPQExpBuffer(delq); destroyPQExpBuffer(labelq); diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c index 5a9ceca0df..f2d33258d7 100644 --- a/src/bin/psql/describe.c +++ b/src/bin/psql/describe.c @@ -952,7 +952,7 @@ objectDescription(const char *pattern, bool showSystem) gettext_noop("Object"), gettext_noop("Description")); - /* Constraint descriptions */ + /* Table constraint descriptions */ appendPQExpBuffer(&buf, " SELECT pgc.oid as oid, pgc.tableoid AS tableoid,\n" " n.nspname as nspname,\n" @@ -963,7 +963,7 @@ objectDescription(const char *pattern, bool showSystem) "ON c.oid = pgc.conrelid\n" " LEFT JOIN pg_catalog.pg_namespace n " " ON n.oid = c.relnamespace\n", - gettext_noop("constraint")); + gettext_noop("table constraint")); if (!showSystem && !pattern) appendPQExpBufferStr(&buf, "WHERE n.nspname <> 'pg_catalog'\n" @@ -973,6 +973,29 @@ objectDescription(const char *pattern, bool showSystem) false, "n.nspname", "pgc.conname", NULL, "pg_catalog.pg_table_is_visible(c.oid)"); + /* Domain constraint descriptions */ + appendPQExpBuffer(&buf, + "UNION ALL\n" + " SELECT pgc.oid as oid, pgc.tableoid AS tableoid,\n" + " n.nspname as nspname,\n" + " CAST(pgc.conname AS pg_catalog.text) as name," + " CAST('%s' AS pg_catalog.text) as object\n" + " FROM pg_catalog.pg_constraint pgc\n" + " JOIN pg_catalog.pg_type t " + "ON t.oid = pgc.contypid\n" + " LEFT JOIN pg_catalog.pg_namespace n " + " ON n.oid = t.typnamespace\n", + gettext_noop("domain constraint")); + + if (!showSystem && !pattern) + appendPQExpBufferStr(&buf, "WHERE n.nspname <> 'pg_catalog'\n" + " AND n.nspname <> 'information_schema'\n"); + + processSQLNamePattern(pset.db, &buf, pattern, !showSystem && !pattern, + false, "n.nspname", "pgc.conname", NULL, + "pg_catalog.pg_type_is_visible(t.oid)"); + + /* * pg_opclass.opcmethod only available in 8.3+ */ diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 458eeb0b9e..64508f0338 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -1208,11 +1208,11 @@ typedef enum ObjectType OBJECT_ATTRIBUTE, /* type's attribute, when distinct from column */ OBJECT_CAST, OBJECT_COLUMN, - OBJECT_CONSTRAINT, OBJECT_COLLATION, OBJECT_CONVERSION, OBJECT_DATABASE, OBJECT_DOMAIN, + OBJECT_DOMCONSTRAINT, OBJECT_EVENT_TRIGGER, OBJECT_EXTENSION, OBJECT_FDW, @@ -1231,6 +1231,7 @@ typedef enum ObjectType OBJECT_RULE, OBJECT_SCHEMA, OBJECT_SEQUENCE, + OBJECT_TABCONSTRAINT, OBJECT_TABLE, OBJECT_TABLESPACE, OBJECT_TRIGGER, diff --git a/src/test/regress/input/constraints.source b/src/test/regress/input/constraints.source index 16d38f6d1e..8ec00543fb 100644 --- a/src/test/regress/input/constraints.source +++ b/src/test/regress/input/constraints.source @@ -478,3 +478,24 @@ UPDATE deferred_excl SET f1 = 3; ALTER TABLE deferred_excl ADD EXCLUDE (f1 WITH =); DROP TABLE deferred_excl; + +-- Comments +CREATE TABLE constraint_comments_tbl (a int CONSTRAINT the_constraint CHECK (a > 0)); +CREATE DOMAIN constraint_comments_dom AS int CONSTRAINT the_constraint CHECK (value > 0); + +COMMENT ON CONSTRAINT the_constraint ON constraint_comments_tbl IS 'yes, the comment'; +COMMENT ON CONSTRAINT the_constraint ON DOMAIN constraint_comments_dom IS 'yes, another comment'; + +-- no such constraint +COMMENT ON CONSTRAINT no_constraint ON constraint_comments_tbl IS 'yes, the comment'; +COMMENT ON CONSTRAINT no_constraint ON DOMAIN constraint_comments_dom IS 'yes, another comment'; + +-- no such table/domain +COMMENT ON CONSTRAINT the_constraint ON no_comments_tbl IS 'bad comment'; +COMMENT ON CONSTRAINT the_constraint ON DOMAIN no_comments_dom IS 'another bad comment'; + +COMMENT ON CONSTRAINT the_constraint ON constraint_comments_tbl IS NULL; +COMMENT ON CONSTRAINT the_constraint ON DOMAIN constraint_comments_dom IS NULL; + +DROP TABLE constraint_comments_tbl; +DROP DOMAIN constraint_comments_dom; diff --git a/src/test/regress/output/constraints.source b/src/test/regress/output/constraints.source index 2ffd263dd3..0d32a9eab6 100644 --- a/src/test/regress/output/constraints.source +++ b/src/test/regress/output/constraints.source @@ -645,3 +645,22 @@ ALTER TABLE deferred_excl ADD EXCLUDE (f1 WITH =); ERROR: could not create exclusion constraint "deferred_excl_f1_excl" DETAIL: Key (f1)=(3) conflicts with key (f1)=(3). DROP TABLE deferred_excl; +-- Comments +CREATE TABLE constraint_comments_tbl (a int CONSTRAINT the_constraint CHECK (a > 0)); +CREATE DOMAIN constraint_comments_dom AS int CONSTRAINT the_constraint CHECK (value > 0); +COMMENT ON CONSTRAINT the_constraint ON constraint_comments_tbl IS 'yes, the comment'; +COMMENT ON CONSTRAINT the_constraint ON DOMAIN constraint_comments_dom IS 'yes, another comment'; +-- no such constraint +COMMENT ON CONSTRAINT no_constraint ON constraint_comments_tbl IS 'yes, the comment'; +ERROR: constraint "no_constraint" for table "constraint_comments_tbl" does not exist +COMMENT ON CONSTRAINT no_constraint ON DOMAIN constraint_comments_dom IS 'yes, another comment'; +ERROR: constraint "no_constraint" for domain "constraint_comments_dom" does not exist +-- no such table/domain +COMMENT ON CONSTRAINT the_constraint ON no_comments_tbl IS 'bad comment'; +ERROR: relation "no_comments_tbl" does not exist +COMMENT ON CONSTRAINT the_constraint ON DOMAIN no_comments_dom IS 'another bad comment'; +ERROR: type "no_comments_dom" does not exist +COMMENT ON CONSTRAINT the_constraint ON constraint_comments_tbl IS NULL; +COMMENT ON CONSTRAINT the_constraint ON DOMAIN constraint_comments_dom IS NULL; +DROP TABLE constraint_comments_tbl; +DROP DOMAIN constraint_comments_dom; -- 2.40.0