Portlet filter life cycle
For performance reasons, portlet filters have a limited life cycle.
All filters have the following stages:
-
Init
The filter will be initialized. To get information about the specific filter settings and portal information, the
FilterConfig
is given to theinit
method of the filter. After the call of the init method, the filter will switch to the use mode. -
Use
Filter requests are handled by the
doFilter
method. -
Destroy
The filter is taken out of service and the
doFilter
method will not be called again. This way, system resources can be given back to the portal.