The registry filter specifies if an extensions is applicable to
all registry instances or to specified instances.
Before you begin
You must have an extensible application to define an extension for
the registry filter.
About this task
Complete the following steps to filter out extensions for an application.
Procedure
- Define an extension for the registry filter extension point for
a named registry instance in the plugin.xml file.
<extension point=“org.eclipse.extensionregistry.RegistryFilter”>
<filter name=“AdminConsole*”
class=“com.ibm.ws.admin.AdminConsoleExtensionFilter”/>
</extension>
- Add the filter implementation to the application by creating a
class to implement the com.ibm.workplace.extension.IExtensionRegistryFilter
interface.
package com.ibm.ws.admin;
import com.ibm.workplace.extension.IExtensionRegistryFilter;
public class AdminConsoleExtensionFilter implements IExtensionRegistryFilter {
:
}
- The extensible application declares the registry name by defining
an extension for the RegistryInstance extension point. This way, the registry
can prepare an IExtensionRegistry instance and put it in JNDI in advance.
<extension point=“org.eclipse.extensionregistry.RegistryInstance”>
<registry name=“AdminConsole”/>
</extension>
- The extensible application obtains a named instance of the registry
to activate any associated filters:
InitialContext ic = new InitialContext();
String lookupName = “services/extensionregistry/AdminConsole”;
IExtensionRegistry reg = (IExtensionRegistry)ic.lookup( lookupName );