Modifying nested attributes using the wsadmin scripting tool

You can modify nested attributes for a configuration object using scripting and the wsadmin tool.

About this task

The attributes for a WebSphere® Application Server configuration object are often deeply nested. For example, a JDBCProvider object has an attribute factory, which is a list of the J2EEResourceFactory type objects. These objects can be DataSource objects that contain a connectionPool attribute with a ConnectionPool type that contains a variety of primitive attributes.

Procedure

Invoke the AdminConfig object commands interactively, or in a script, from an operating system command prompt.
See the topic on starting the wsadmin scripting client.

Obtain the configuration ID of the object, for example:

Using Jacl:

set t1 [$AdminConfig getid /DataSource:TechSamp/]

Using Jython:

t1=AdminConfig.getid('/DataSource:TechSamp/')

Table 1. AdminConfig getid command description . Run a command from a wsadmin command line.
Element	Description
`set`	is a Jacl command
`t1`	is a variable name
`$`	is a Jacl operator for substituting a variable name with its value
`AdminConfig`	is an object representing the product configuration
`getid`	is an AdminConfig command
`DataSource`	is the object type
`TechSamp`	is the name of the object that will be modified

Modify one of the object parents and specify the location of the nested attribute within the parent, for example:

Using Jacl:

$AdminConfig modify $t1 {{connectionPool {{reapTime 2003}}}}

Using Jython list:

AdminConfig.modify(t1, [["connectionPool", [["reapTime", 2003]]]])

Using Jython string:

AdminConfig.modify(t1, '[[connectionPool [[reapTime 2003]]]]')

Table 2. AdminConfig modify command description . Run a command from a wsadmin command line.
Element	Description
`$`	is a Jacl operator for substituting a variable name with its value
`AdminConfig`	is an object representing the WebSphere Application Server configuration
`modify`	is an AdminConfig command
`t1`	evaluates to the configuration ID of the datasource in step number 2
`connectionPool`	is an attribute
`reapTime`	is a nested attribute within the connectionPool attribute
`2003`	is the value of the reapTime attribute

Save the configuration by issuing an AdminConfig save command.
For example:
Using Jacl:
```
$AdminConfig save
```
Using Jython:
```
AdminConfig.save()
```
Use the reset command of the AdminConfig object to undo changes that you made to your workspace since your last save.

Example

An alternative way to modify nested attributes is to modify the nested attribute directly.

Using Jacl:

set techsamp [$AdminConfig getid /DataSource:TechSamp/]
set pool [$AdminConfig showAttribute $techsamp connectionPool]
$AdminConfig modify $pool {{reapTime 2003}}

Using Jython list:

techsamp=AdminConfig.getid('/DataSource:TechSamp/')
pool=AdminConfig.showAttribute(techsamp,'connectionPool')
AdminConfig.modify(pool,[['reapTime',2003]])

Using Jython string:

techsamp=AdminConfig.getid('/DataSource:TechSamp/')
pool=AdminConfig.showAttribute(techsamp,'connectionPool')
AdminConfig.modify(pool,'[[reapTime 2003]]')

In this example, the first command gets the configuration id of the DataSource, and the second command gets the connectionPool attribute. The third command sets the reapTime attribute on the ConnectionPool object directly.