Mercurial > dive4elements > framework
view artifacts/src/main/java/de/intevation/artifacts/DataProvider.java @ 375:33176e6e3c37
Added Override annotations.
artifacts/trunk@3909 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Fri, 03 Feb 2012 16:04:09 +0000 |
parents | 9c8d91708d28 |
children | ab3900303f25 |
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package de.intevation.artifacts; import de.intevation.artifacts.CallContext; /** * DataProviders register on a Blackboard with a key (basically shouting * "I can or know X!"). * * Consumers look at the blackboard and then consume data from these * DataProvider, passing them (optional) parameterization and the blackboard * itself. * * Through the blackboard-passing-when-consuming, also recursive patterns can * be modelled (but take care, there is no in-built cycle detection). */ public interface DataProvider { /** Register this DataProvider on a blackboard under a key. */ public void register(CallContext blackboard); /** Provide data, given parameterization and a "blackboard". */ public Object provideData(Object key, Object param, CallContext context); } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :