WAS v8.5 > Script the application serving environment (wsadmin) > Use properties files to manage system configuration > Manage specific configuration objects using properties files > Work with server properties files > Work with application server properties files

Work with library reference properties files

We can use properties files to create or change library reference properties under a PARENT_LAST class loader that is under the ApplicationServer object of a server.

Determine the changes to make to your library reference configuration or its configuration objects.

Start the wsadmin scripting tool. To start wsadmin using the Jython language, run the wsadmin -lang Jython command from the bin directory of the server profile. Using a properties file, we can create, modify, or delete a library reference object and its configuration properties.

Run administrative commands using wsadmin to create or change library reference properties, validate the properties, and apply them to your configuration.

Actions for library reference properties files. We can create, modify, and delete library reference configuration properties.

Action	Procedure
create	Set properties and then run the applyConfigProperties command.
modify	Edit properties and then run the applyConfigProperties command.
delete	Uncomment #DELETE=true and run the deleteConfigProperties command.
create Property	Not applicable
delete Property	Not applicable

Optionally, we can use interactive mode with the commands:

AdminTask.command_name('-interactive')

• Create a library reference and its properties.

  1. Create LibraryRef properties.

     Open an editor and specify library reference properties. We can copy the following example properties into an editor and modify the properties as needed for the situation. The example defines a library reference under a PARENT_LAST class loader that is under the ApplicationServer object of a server.

     #
     # SubSection 1.0.0.0.0 # ApplicationServer Classloader
     #
     ResourceType=LibraryRef
     ImplementingResourceType=GenericType
     ResourceId=Cell=!{cellName}:Node=!{nodeName}:Server=!{serverName}:ApplicationServer=:
     Classloader=mode#PARENT_LAST:LibraryRef=libraryName#mylibName
     AttributeInfo=libraries
     #DELETE=true
     
     
     #
     #Properties
     #
     libraryName=mylibName
     sharedClassloader=false #boolean,default(true)

  2. Run the applyConfigProperties command to create a library reference configuration.

     Running the applyConfigProperties command applies the properties file to the configuration. In this Jython example, the optional -reportFileName parameter produces a report named report.txt:

     AdminTask.applyConfigProperties(['-propertiesFileName myObjectType.props -reportFileName report.txt '])

• Modify an existing library reference.
  1. Obtain a properties file for the library reference to change.

     We can extract a properties file for a LibraryRef object using the extractConfigProperties command.

  2. Open the properties file in an editor and change the properties as needed.

     Ensure the environment variables in the properties file match your system.

  3. Run the applyConfigProperties command.

• If we no longer need a library reference, we can delete the entire library reference object.

  To delete the entire object, specify DELETE=true in the header section of the properties file and run the deleteConfigProperties command; for example:

  AdminTask.deleteConfigProperties('[-propertiesFileName myObjectType.props -reportFileName report.txt]')

Results

We can use the properties file to manage the library reference properties.

Save the changes to your configuration.

Related concepts:

Class loaders

Related

Extracting properties files using wsadmin.sh
Create server, cluster, application, or authorization group objects using properties files and wsadmin scripting
Delete server, cluster, application, or authorization group objects using properties files

Reference:

PropertiesBasedConfiguration command group for AdminTask using wsadmin.sh

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