Package ucar.nc2.ft

Interface PointFeatureIterator

All Superinterfaces:

AutoCloseable, Closeable, Iterator<PointFeature>

All Known Implementing Classes:

FlattenedDatasetPointCollection.FlattenedDatasetPointIterator, PointIteratorAbstract, PointIteratorAdapter, PointIteratorEmpty, PointIteratorFiltered, PointIteratorFlatten, PointIteratorFromStructureData, PointIteratorMultidim, PointIteratorStream, StandardPointFeatureIterator

public interface PointFeatureIterator
extends Closeable, Iterator<PointFeature>

An iterator over PointFeatures. Use try-with-resource to make sure resources are released:

 try (PointFeatureIterator iter = getIter()) {
   while (iter.hasNext())
     process(iter.next());
 }
 

Since:

Feb 18, 2008

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	PointFeatureIterator.Filter	A filter on PointFeatures

Method Summary

Modifier and Type	Method	Description
void	close()	Make sure that the iterator is complete, and recover resources.
boolean	hasNext()	Check if another PointFeature is available.
PointFeature	next()	Returns the next PointFeature.

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Method Detail

hasNext

boolean hasNext()

Check if another PointFeature is available.

Since this iterator may be used in a for-each statement, implementations should close it the first time this method returns false, as it may not get closed otherwise.

Specified by:

hasNext in interface Iterator<PointFeature>

Returns:

true if another PointFeature is available

Throws:

RuntimeException - on i/o error

next

PointFeature next()

Returns the next PointFeature. You must call hasNext() before calling next(), even if you know it will return true.

Specified by:

next in interface Iterator<PointFeature>

Returns:

the next PointFeature

Throws:

RuntimeException - on i/o error

close

void close()

Make sure that the iterator is complete, and recover resources. You must complete the iteration (until hasNext() returns false) or call close(). It may be called more than once (idempotent).

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable