webMethods之Developer （1）

现在开始Developer的内容。Developer我认为是webMethods开发的最重要的IDE。本文先讲一些相关概念。

Service

这里的service很像我们平常程序中的函数，doc：Integration Server is a service-base integration broker. A service is a process that may be invoked to perform a wide variety of tasks.

Package 

Pacakge可以看成是一个容器。官方的doc是这么写的“A package is a container that is used to bundle services and related elements.  Packages are designed to hold all of the components of a logical unit in an integration solution.”

Element

Elements可以看成是package中可以包含的元素。doc：Elements include folders, services, specifications, IS document types, triggers, and IS schemas.

Element Names

Elements Names比较特别，是由目录名和element名构成的。比如： 

folder.subfolder1.subfolder2:element

Lock

Lock很像版本控制里的概念。doc：  A lock on an element prevents another user from editing that element. There are two types of locks: user locks and system locks.

ACL

ACL是一种权限控制的机制。doc：

 An ACL (access control list) controls access to packages, folders, and other elements (such as services, IS document types, and specifications) at the group level.