Changes

Umlaut Technical Overview

290 bytes added, 16:45, 24 December 2007
Request caching
====Request caching====
The point of this recovery re-use of Request objects is that if the user presses the browser reload button, the app should be connected with the same already created request--allowing the same already generated responses to be used, among other things. Cache matching is based This also allows the user to click on: Must be from various Umlaut functions and keep re-using the same sessionRequest. Again, must be from the same originating IP address, must have the same OpenURL parameters (same OpenURL parameters measured by a serialized version (Request#serialized_co_params) main reason this is important is to re-use already generated responses instead of recognized openurl paramters stored in the 'params' attributere-generating them. This is also important for background service processing.
Cache matching for re-use is based on: Must be from the same session, must be from the same originating IP address, must have the same OpenURL elements (ie, same OpenURL parameters measured by a serialized version (Request#serialized_co_params)) stored in the 'params' attribute of Request.  Alternately, if the request ID is passed in (in query var "umlaut.request_id"), that is used instead of context object element matching. Umlaut often passes requestID internally, to make sure the same request is recovered. If request_id matches, sessions is not required to match--this is intentional to recover the request even if browser isn't returning cookies, thus not connecting to same session.
===Building the service Collection: Institutions and Services===