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annotate artifacts/src/main/java/de/intevation/artifacts/DataProvider.java @ 352:9c8d91708d28

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Added DataProvider interface (interface for inter-facet communication). artifacts/trunk@3330 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 30 Nov 2011 08:20:15 +0000
parents
children ab3900303f25
rev   line source
352
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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1 package de.intevation.artifacts;
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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2
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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3 import de.intevation.artifacts.CallContext;
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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4
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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5 /**
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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6 * DataProviders register on a Blackboard with a key (basically shouting
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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7 * "I can or know X!").
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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8 *
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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9 * Consumers look at the blackboard and then consume data from these
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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10 * DataProvider, passing them (optional) parameterization and the blackboard
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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11 * itself.
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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12 *
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13 * Through the blackboard-passing-when-consuming, also recursive patterns can
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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14 * be modelled (but take care, there is no in-built cycle detection).
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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15 */
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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16 public interface DataProvider {
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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17 /** Register this DataProvider on a blackboard under a key. */
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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18 public void register(CallContext blackboard);
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19
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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20 /** Provide data, given parameterization and a "blackboard". */
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21 public Object provideData(Object key, Object param, CallContext context);
9c8d91708d28 Added DataProvider interface (interface for inter-facet communication).
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22 }
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23 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org