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Difference between revisions of "OTExample Observer"
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</tr><tr> | </tr><tr> | ||
<td>flower_example/ | <td>flower_example/ | ||
− | :ObservingOpen | + | :[[OTExample_Observer/ObservingOpen|ObservingOpen]] |
− | :ObservingClose</td> | + | :[[OTExample_Observer/ObservingClose|ObservingClose]]</td> |
<td style="vertical-align:top;">'''Two applications of the Observer pattern'''<br> | <td style="vertical-align:top;">'''Two applications of the Observer pattern'''<br> | ||
binding the above open spots using callin ({{{otjld|4|}}}) and callout ({{{otjld|3}}}) bindings.</td> | binding the above open spots using callin ({{{otjld|4|}}}) and callout ({{{otjld|3}}}) bindings.</td> |
Revision as of 07:32, 23 February 2010
This is a reusable implementation of the omnipresent design pattern "Observer".
Note, that a well designed program in Object Teams will usually not require an explicit Observer infrastructure. See the Stopwatch example for an example, how a plain callin-binding (4) suffices.
This demo should, however, give a quick understanding to some techniques of Object Teams for all who are familiar with the Observer pattern (the OTDT ships with a simpler version of this pattern).
protocol/ | This implements the GoF pattern very straight forwardly.
Open spots are:
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flower_example/ | Implement some base entities |
flower_example/ | Two applications of the Observer pattern binding the above open spots using callin (4) and callout (3) bindings. |
flower_example/
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A simple main program |