WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile

320 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile

8.1 Overview of WebSphere scripting

WebSphere Application Server provides a scripting interface based on the Bean Scripting

Framework (BSF).

This interface is called wsadmin. BSF is an open source project that is

used to implement an architecture for incorporating scripting into Java applications and

applets. The BSF architecture works as an interface between Java applications and scripting

languages. Using this framework allows scripting languages to complete the following tasks:

 Look up a preregistered bean and access a predeclared bean.

 Register a newly created bean.

 Perform all bean operations.

 Bind events to scripts in the scripting language.

Because wsadmin uses BSF, it can make various Java objects available through

language-specific interfaces to scripts. Figure 8-1 shows the major components that are

involved in the wsadmin scripting solution.

Figure 8-1 Scripting in wsadmin

You can use the following programming languages to write wsadmin scripts:

 Jython

 Jacl

With WebSphere Application Server V7, the deprecation process for the Jacl syntax began.

The script library and the command assistance on the administrative console support only

Jython.

If you have existing Jacl scripts and want to start migrating to Jython, you can use the

Jacl-to-Jython conversion utility to convert the scripts. This conversion assistant typically

achieves 95-98% of a preliminary conversion. In most cases, the resulting conversion is

syntactically and runtime equivalent.

However, verify each line to ensure that the code functions as you originally intended. When

Jacl and Jython language differences result in lines of code that are difficult to convert

automatically, the converted lines are flagged with a #?PROBLEM? tag. This tag provides

assistance in finding areas that are most likely in need of manual conversion.

Java Virtual Machine

Resources

Connector

Mbean

Server

ObjectName

Mbeans

ObjectName

Mbeans

5 Management

Objects

AdminConfig

AdminApp

AdminTask

AdminControl

Help