Tweak dependency code to suppress NOTICEs generated by new method for

cleaning out temp namespaces.  We don't really want the server log to be
cluttered with 'Drop cascades to table foo' every time someone uses a
temp table...

Author: tglsfdc

src/backend/catalog/dependency.c

@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/catalog/dependency.c,v 1.22 2003/02/16 02:30:37 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/catalog/dependency.c,v 1.23 2003/03/06 22:54:49 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -97,12 +97,14 @@ static void findAutoDeletableObjects(const ObjectAddress *object,
 									 Relation depRel);
 static bool recursiveDeletion(const ObjectAddress *object,
 				  DropBehavior behavior,
+				  int msglevel,
 				  const ObjectAddress *callingObject,
 				  ObjectAddresses *oktodelete,
 				  Relation depRel);
 static bool deleteDependentObjects(const ObjectAddress *object,
 								   const char *objDescription,
 								   DropBehavior behavior,
+								   int msglevel,
 								   ObjectAddresses *oktodelete,
 								   Relation depRel);
 static void doDeletion(const ObjectAddress *object);
@@ -164,7 +166,8 @@ performDeletion(const ObjectAddress *object,
 
 	findAutoDeletableObjects(object, &oktodelete, depRel);
 
-	if (!recursiveDeletion(object, behavior, NULL, &oktodelete, depRel))
+	if (!recursiveDeletion(object, behavior, NOTICE,
+						   NULL, &oktodelete, depRel))
 		elog(ERROR, "Cannot drop %s because other objects depend on it"
 			 "\n\tUse DROP ... CASCADE to drop the dependent objects too",
 			 objDescription);
@@ -183,10 +186,12 @@ performDeletion(const ObjectAddress *object,
  * CASCADE.
  *
  * This is currently used only to clean out the contents of a schema
- * (namespace): the passed object is a namespace.
+ * (namespace): the passed object is a namespace.  We normally want this
+ * to be done silently, so there's an option to suppress NOTICE messages.
  */
 void
-deleteWhatDependsOn(const ObjectAddress *object)
+deleteWhatDependsOn(const ObjectAddress *object,
+					bool showNotices)
 {
 	char	   *objDescription;
 	Relation	depRel;
@@ -218,7 +223,9 @@ deleteWhatDependsOn(const ObjectAddress *object)
 	 * stuff dependent on the given object.
 	 */
 	if (!deleteDependentObjects(object, objDescription,
-								DROP_CASCADE, &oktodelete, depRel))
+								DROP_CASCADE,
+								showNotices ? NOTICE : DEBUG1,
+								&oktodelete, depRel))
 		elog(ERROR, "Failed to drop all objects depending on %s",
 			 objDescription);
 
@@ -342,7 +349,7 @@ findAutoDeletableObjects(const ObjectAddress *object,
  * depRel is the already-open pg_depend relation.
  *
  *
- * In RESTRICT mode, we perform all the deletions anyway, but elog a NOTICE
+ * In RESTRICT mode, we perform all the deletions anyway, but elog a message
  * and return FALSE if we find a restriction violation.  performDeletion
  * will then abort the transaction to nullify the deletions.  We have to
  * do it this way to (a) report all the direct and indirect dependencies
@@ -370,6 +377,7 @@ findAutoDeletableObjects(const ObjectAddress *object,
 static bool
 recursiveDeletion(const ObjectAddress *object,
 				  DropBehavior behavior,
+				  int msglevel,
 				  const ObjectAddress *callingObject,
 				  ObjectAddresses *oktodelete,
 				  Relation depRel)
@@ -518,18 +526,17 @@ recursiveDeletion(const ObjectAddress *object,
 				 getObjectDescription(&owningObject));
 		else if (behavior == DROP_RESTRICT)
 		{
-			elog(NOTICE, "%s depends on %s",
+			elog(msglevel, "%s depends on %s",
 				 getObjectDescription(&owningObject),
 				 objDescription);
 			ok = false;
 		}
 		else
-			elog(NOTICE, "Drop cascades to %s",
+			elog(msglevel, "Drop cascades to %s",
 				 getObjectDescription(&owningObject));
 
-		if (!recursiveDeletion(&owningObject, behavior,
-							   object,
-							   oktodelete, depRel))
+		if (!recursiveDeletion(&owningObject, behavior, msglevel,
+							   object, oktodelete, depRel))
 			ok = false;
 
 		pfree(objDescription);
@@ -546,7 +553,8 @@ recursiveDeletion(const ObjectAddress *object,
 	 * constraint.
 	 */
 	if (!deleteDependentObjects(object, objDescription,
-								behavior, oktodelete, depRel))
+								behavior, msglevel,
+								oktodelete, depRel))
 		ok = false;
 
 	/*
@@ -613,6 +621,7 @@ static bool
 deleteDependentObjects(const ObjectAddress *object,
 					   const char *objDescription,
 					   DropBehavior behavior,
+					   int msglevel,
 					   ObjectAddresses *oktodelete,
 					   Relation depRel)
 {
@@ -664,18 +673,17 @@ deleteDependentObjects(const ObjectAddress *object,
 						 getObjectDescription(&otherObject));
 				else if (behavior == DROP_RESTRICT)
 				{
-					elog(NOTICE, "%s depends on %s",
+					elog(msglevel, "%s depends on %s",
 						 getObjectDescription(&otherObject),
 						 objDescription);
 					ok = false;
 				}
 				else
-					elog(NOTICE, "Drop cascades to %s",
+					elog(msglevel, "Drop cascades to %s",
 						 getObjectDescription(&otherObject));
 
-				if (!recursiveDeletion(&otherObject, behavior,
-									   object,
-									   oktodelete, depRel))
+				if (!recursiveDeletion(&otherObject, behavior, msglevel,
+									   object, oktodelete, depRel))
 					ok = false;
 				break;
 			case DEPENDENCY_AUTO:
@@ -689,9 +697,8 @@ deleteDependentObjects(const ObjectAddress *object,
 				elog(DEBUG1, "Drop auto-cascades to %s",
 					 getObjectDescription(&otherObject));
 
-				if (!recursiveDeletion(&otherObject, behavior,
-									   object,
-									   oktodelete, depRel))
+				if (!recursiveDeletion(&otherObject, behavior, msglevel,
+									   object, oktodelete, depRel))
 					ok = false;
 				break;
 			case DEPENDENCY_PIN:

src/backend/catalog/namespace.c

@@ -13,7 +13,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.47 2003/02/09 06:56:26 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.48 2003/03/06 22:54:49 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1698,7 +1698,7 @@ RemoveTempRelations(Oid tempNamespaceId)
 	object.objectId = tempNamespaceId;
 	object.objectSubId = 0;
 
-	deleteWhatDependsOn(&object);
+	deleteWhatDependsOn(&object, false);
 }
 
 /*

src/include/catalog/dependency.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: dependency.h,v 1.6 2003/02/07 01:33:06 tgl Exp $
+ * $Id: dependency.h,v 1.7 2003/03/06 22:54:49 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -84,7 +84,8 @@ typedef struct ObjectAddress
 extern void performDeletion(const ObjectAddress *object,
 				DropBehavior behavior);
 
-extern void deleteWhatDependsOn(const ObjectAddress *object);
+extern void deleteWhatDependsOn(const ObjectAddress *object,
+								bool showNotices);
 
 extern void recordDependencyOnExpr(const ObjectAddress *depender,
 					   Node *expr, List *rtable,