Hello,
We've been playing around with Adapters and found this neat problem.
This is from section 4 of the udig tutorial, using IAdaptable:
IAdapterManager manager = Platform.getAdapterManager();
if( manager.hasAdapter(object,"java.net.URL")){
URL url = (URL) manager.getAdapter( object, URL.class );
if( url != null ){
buffer.append("AdapterManager has a factory making us into a
URL:"+url);
buffer.append(separator);
}
}
So in this code snippet, if an IGeoResource object comes in, nothing
happens. It doesn't realize that it CAN be adapted to a URL.
However, if I've performed the 'display url' operation from the example
first (by right clicking on a georesource in the catalog, and going to
Operations->Display URL) then this code works fine.
Alternatively, this code works regardless of whether i've been right
clicking or not:
if( AdapterUtil.instance.canAdaptTo(object, URL.class) ) {
URL url;
try {
url = AdapterUtil.instance.adapt("java.net.URL", object, null);
} catch (IOException e) {
throw (RuntimeException) new RuntimeException( ).initCause( e );
}
if( url != null ){
buffer.append("AdapterManager has a factory making us into a
URL:"+url);
buffer.append(separator);
}
}
So what's the deal with having to use the AdapterUtil class?!
Thanks,
Amr.
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