I mentioned this a couple weeks ago; but after reading into the Java 7 pipeline
and Juno support for try-with-resource I am even more convinced that this is a
necissary change for GeoTools 9.x.
Reading:
-
http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html
-
http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2FwhatsNew%2FJava7news%2Fwhats-new-java-7.html
I will prepare a change request; it amounts to:
interface FeatureIterator< F extends Feature> implements Closable {
public void close() throws IOException;
}
It allows the following:
Java 7: try-with-resource
try (FeatureIterator iterator = feastureSource.getFeatures()){
while( iterator.hasNext() ){
Feature f = iterator.next();
System.out.println( f.getIdentifier() );
}
}
This would finally let us recover for the darn for-each loop. FeatureReader and
FeatureWriter should also implement closable.
Java 6: close() would throw IOException
FeatureIterator iterator = featureSource.getFeatures();
try {
while( iterator.hasNext() ){
Feature f = iterator.next();
System.out.println( f.getIdentifier() );
}
}
finally {
if( iterator != null ) iteator.close();
}
// note IOException can be thrown from iterator.close or
featureSource.getFeatures()
--
Jody Garnett
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