Oracle 对象依赖循环

Question

当我尝试在 Oracle 数据库中编译我的项目时遇到问题。为了更简单，我有三个对象：2 个包（UTILS 和 TYPES）和 1 个视图（VIEW）。

包 UTILS 使用包 TYPES 中定义的类型。 Package TYPES 使用 VIEW 作为其中一种类型的基础。并且 VIEW 在其脚本中使用包 UTILS 中的函数。当我尝试对这些对象之一进行一些更改时，我无法编译，因为一切都处于无效状态。所以创建了某种对象依赖循环。

请帮我解决这个问题。

例如，有没有编译下面的代码？每个对象在语法上都是正确的，但是如何将它们全部编译在一起呢？

create or replace package my_types is
   type type1 is table of number;
   type type2 is table of my_view%rowtype;
end;
/

create or replace package my_utils is
   function get_1 return number;
   procedure do_something(parameter my_types.type2);
end;
/

create or replace package body my_utils is
   function get_1 return number is
   begin
       return 1;
   end;

   procedure do_something(parameter my_types.type2) is
   begin
       null;
   end;
end;
/

create or replace force view my_view as
select * from dual
where 1 = my_utils.get_1();

exec dbms_utility.compile_schema(user, false);

select object_name from user_objects where status <> 'VALID';

Answer 1

如果你在两个视图中打破视图，你可以打破循环依赖：

create or replace view my_view_1
as select * from dual; 

create or replace package my_types is
   type type1 is table of number;
   type type2 is table of my_view_1%rowtype;
end;
/

create or replace package my_utils is
   function get_1 return number;
   procedure do_something(parameter my_types.type2);
end;
/

create or replace package body my_utils is
   function get_1 return number is
   begin
       return 1;
   end;

   procedure do_something(parameter my_types.type2) is
   begin
       null;
   end;
end;
/

create or replace view my_view as
select * from my_view_1
where 1 = my_utils.get_1();

编辑：另一种可能性是将包 my_utils 分成两部分：

create or replace package my_utils_1 is
   function get_1 return number;
end;
/
create or replace package body my_utils_1 is
   function get_1 return number is
   begin
       return 1;
   end;
end;
/

create or replace view my_view as
select * from dual
where 1 = my_utils_1.get_1();

create or replace package my_types is
   type type1 is table of number;
   type type2 is table of my_view%rowtype;
end;
/

create or replace package my_utils_2 is
   procedure do_something(parameter my_types.type2);
end;
/
create or replace package body my_utils_2 is
   procedure do_something(parameter my_types.type2) is
   begin
       null;
   end;
end;
/

Answer 2

我会避免使用打包类型和 %ROWTYPE。这些不是标准 SQL，可以替换为Structured Types

create or replace view my_view_1
as select * from dual; 

create or replace type type1 as table of number;
create or replace type type2 as object (DUMMY VARCHAR2(1 byte));
create or replace type table_type2 as table of type2;

create or replace package my_utils is
   function get_1 return number;
   procedure do_something(parameter table_type2);
end;
/

create or replace package body my_utils is
   function get_1 return number is
   begin
       return 1;
   end;

   procedure do_something(parameter table_type2) is
   begin
       null;
   end;
end;
/

create or replace view my_view as
select * from my_view_1
where 1 = my_utils.get_1();

Answer 3

如果您不想/不能拆分您的包或视图，您始终可以先创建视图的虚拟版本，编译包，然后创建“真实”视图：

create or replace package my_types is
   type type1 is table of number;
   type type2 is table of my_view%rowtype;
end;
/

create or replace package my_utils is
   function get_1 return number;
   procedure do_something(parameter my_types.type2);
end;
/

create or replace package body my_utils is
   function get_1 return number is
   begin
       return 1;
   end;

   procedure do_something(parameter my_types.type2) is
   begin
       null;
   end;
end;
/

create or replace force view my_view as
select * from dual;

exec dbms_utility.compile_schema(user, false);

create or replace force view my_view as
select * from dual
where 1 = my_utils.get_1();

select object_name from user_objects where status <> 'VALID';