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Deploying the Interceptor
There are three administrative tasks associated with managing the registration of interceptors:
This section explains these three tasks.
Registering an Interceptor
You use the epifregplugin command to register your interceptors with an ORB. When you register an interceptor, the interceptor is added to the end of the list of interceptors already registered with the ORB. This is important when you have multiple interceptors registered with an ORB.
The syntax of the epifregplugin command for registering interceptors is the following:
epifregplugin -t bea/wle -i AppRequestInterceptor \
-p <InterceptorName> -f <FileName> -e <EntryPoint> \
-u "DisplayName=<Administrative Name>" -v 1.0
In the preceding command line:
Note: When you register an interceptor on a machine on which WebLogic Enterprise server processes are already running, those processes will not be subject to interception. Only those processes that are started after an interceptor is registered are subject to interception. If you want to make sure that all WebLogic Enterprise server processes are subject to interception, make sure that you register you interceptors before you boot any WebLogic Enterprise server processes.
Unregistering an Interceptor
Use the epifunregplugin command to unregister an interceptor from an ORB. This command has the following syntax:
epifunregplugin -t bea/wle -p <InterceptorName>
The argument <InterceptorName> is the same case-insensitive name specified in the epifregplugin command. Unregistering an interceptor takes it out of the interceptor order.
Changing the Order in Which Interceptors are Called
You can see the order in which interceptors are registered, and thus called, by using the following command:
epifregedit -t bea/wle -g -k SYSTEM/interfaces/AppRequestInterceptor
The epifregedit displays the order in which interceptors are executed when the ORB receives a request.
You can change the order in which the interceptors are executed using the following command:
epifregedit -t bea/wle -s -k SYSTEM/interfaces/AppRequestInterceptor \
-a Selector=Order -a Order=<InterceptorName1>,<InterceptorName2>,...
Each <InterceptorName> is the case-insensitive name of the interceptor that must have been previously registered. This command replaces the order currently in the registry. The epifregedit command must specify every interceptor that you want to have loaded and executed by the ORB. If an interceptor is still registered and if you do not specify its name using epifregedit command, the interceptor is not loaded.
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