removed: hidden variable 'old_url' in emacs template

git-svn-id: svn://ttmath.org/publicrep/cmslu/trunk@527 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/db.cpp

@@ -821,6 +821,39 @@ void Db::GetItems(std::vector<Item> & item_table, long parent_id, Item::Type typ
 }
 
 
+// how many items there are in a 'parent_id' directory
+long Db::Size(long parent_id, Item::Type type)
+{
+	PGresult * r = 0;
+	int res = 0;
+
+	try
+	{
+		AssertConnection();
+
+		std::ostringstream query;
+		query << "select count(id) from core.item where ";
+		
+		if( type != Item::none )
+			query << "type='" << (int)type << "' and ";
+			
+		query << "parent_id='" << parent_id << "';";
+
+		r = AssertQuery( query.str() );
+		AssertResultStatus(r, PGRES_TUPLES_OK);
+
+		res = atol(AssertValue(r, 0, 0));
+	}
+	catch(const Error &)
+	{
+	}
+	
+	ClearResult(r);
+
+return res;
+}
+
+
 // !! ta chyba nie uzywana juz? 
 void Db::GetItem(std::vector<Item> & item_table, long id)
 {