Migrating the class-loader Module Visibility Mode setting

WAS Version 4.0.x had a server-wide configuration setting called Module Visibility Mode. For V5, you use application or WAR class-loader policies instead of module visibility modes. The Version 5.0 policies provide additional flexibility because you can configure applications running in a server for an application class-loader policy of SINGLE or MULTIPLE and for a WAR class-loader policy of APPLICATION or MODULE.

To migrate module visibility modes in your Version 4.0.x applications to their equivalents in V5, change the settings for your Version 4.0.x applications and modules to the V5 values shown in the table below.

Version 4.0.x module visibility mode	V5 application class-loader policy	V5 WAR class-loader policy
Server	SINGLE	APPLICATION
Compatibility	SINGLE	MODULE
Application	MULTIPLE	APPLICATION
Module*	MULTIPLE	MODULE
J2EE	MULTIPLE	MODULE

*There is no exact equivalent for the Version 4.0.x Module mode because it isolated EJB modules within an application.

 

See Also

Class loaders
Class loading

 

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