| 19 | | Note this RFC originally explored using an Observer pattern as per implementations in Java [http://java.sun.com/j2se/1.4.2/docs/api/javax/imageio/event/IIOReadUpdateListener.html imageio update] but after detailed discussions with [http://thread.gmane.org/gmane.comp.gis.gdal.devel/16409/focus=16630 Tamas Szekeres, Even Rouault, Adam Nowacki and Frank Warmerdam] a simpler interface is proposed to reduce the potential for problems by having the callback implemented by another thread. |
| 20 | | |
| 21 | | Each swig wrapper language will have its own design pattern for event handling (the image updates) and the proposed interface will allow that pattern implementation to be provided, even if simulated. |
| | 19 | Note this RFC originally explored using an Observer pattern as per implementations in Java [http://java.sun.com/j2se/1.4.2/docs/api/javax/imageio/event/IIOReadUpdateListener.html imageio update]. The RFC then also discussed the Asynchronous Message Queue pattern, but after detailed discussions with [http://thread.gmane.org/gmane.comp.gis.gdal.devel/16409/focus=16630 Tamas Szekeres, Even Rouault, Adam Nowacki and Frank Warmerdam] an even simpler interface is proposed which wraps the more unpleasant developer tasks of operating with the streaming protocol but allows the user greater flexibility in interacting with the stream in their preferred language. This is implemented by using a context object to act as an intermediary between the user layer and the format driver. |
