Jody Garnett a écrit :
> Near as I can tell the FactoryRegistry implements used by GeoTools seems
> to have no ability to construct implementations on the CLASSPATH using
> user supplied hints. In every case a no argument constructor is used
> (that refers to the global hints).
This is not true, it work if used as expected. Please lets try to fix your use
case.
* You must use the FactoryCreator subclass, not FactoryRegistry.
* You *MUST* write a factory class with a constructor as below:
public class MyFactory extends AbstractFactory {
private SomeObjectICareAbout someValueICareAbout;
public MyFactory() {
this(null); // You could put there any default hints you wish.
}
public MyFactory(Hints userHints) {
someValueICareAbout = userHints.get(Hints.THE_HINT_I_CARE_ABOUT);
hints.put(Hints.THE_HINT_I_CARE_ABOUT, someValueICareAbout);
}
}
Again, the hint you care about *MUST* be passed to the AbstractFactory.hints
map, otherwise it will not work. Put only the hints you care about (do not use
hints.putAll(userHints)).
Martin
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