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Umlaut Technical Overview

317 bytes added, 17:52, 6 February 2008
ServiceResponse and related data structures
* One ServiceResponse to be assigned ''multiple'' ServiceTypeValues and thus listed multiple times with a given Request.
In fact, Umlaut does not currently use ServiceResponse caching across requests; it turned out to be tricky to get right without clear gain. And very few (if any?) current services register the same ServiceResponse to a request with multiple ServiceTypeValues. But, the architecture is there to support it if needed in the future.
 This data structure is architecture ends up somewhat confusing, (and ServiceType is probably not a clear name for that three-way join) but there are usually convenience methods defined to avoid the complexity; they should be used. See for example (tbd).
===Obligations of Service logic===

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