Interface FeatureIterator<F extends Feature>

All Superinterfaces:
AutoCloseable, Closeable
All Known Subinterfaces:
IMappingFeatureIterator, SimpleFeatureIterator
All Known Implementing Classes:
AbstractMappingFeatureIterator, ClippedFeatureIterator, ClippingFeatureIterator, ComplexFeatureIteratorImpl, ContentFeatureCollection.WrappingFeatureIterator, DataAccessMappingFeatureIterator, DecoratingFeatureIterator, DecoratingSimpleFeatureIterator, DelegateFeatureIterator, DelegateSimpleFeatureIterator, FeatureIteratorImpl, FeatureStreams.StreamFeatureIterator, FilteredIterator, FilteringFeatureIterator, FilteringSimpleFeatureIterator, ForceCoordinateSystemIterator, IndexedMappingFeatureIterator, MappingAttributeIterator, MaxFeaturesIterator, MaxFeaturesSimpleFeatureIterator, PagingFeatureCollection.PagingFeatureIterator, PartialIndexedMappingFeatureIterator, PostFilteringMappingFeatureIterator, PreGeneralizedFeatureIterator, PushBackFeatureIterator, ReprojectFeatureIterator, ReprojectingFeatureIterator, ReTypingFeatureIterator, SampleDataAccessFeatureIterator, SimpleFeatureIteratorImpl, SortedFeatureIterator, TotalIndexedMappingFeatureIterator, WrappingIterator, XmlMappingFeatureIterator

public interface FeatureIterator<F extends Feature> extends Closeable
Streaming access to features, required to close() after use.

FeatureIterator is a drop in replacement for Iterator supporting a close method.

Sample use:

 FeatureIterator i = featureCollection.features()
 try {
    while( i.hasNext() ){
        SimpleFeature feature = i.next();
    }
 }
 finally {
    i.close();
 }
 
Author:
Ian Schneider
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    Closes this iterator and releases any system resources associated with it.
    boolean
    Does another Feature exist in this Iteration.
    Get the next Feature in this iteration.
  • Method Details

    • hasNext

      boolean hasNext()
      Does another Feature exist in this Iteration.

      Iterator defin: Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

      Returns:
      true if more Features exist, false otherwise.
    • next

      F next() throws NoSuchElementException
      Get the next Feature in this iteration.
      Returns:
      The next Feature
      Throws:
      NoSuchElementException - If no more Features exist.
    • close

      void close()
      Closes this iterator and releases any system resources associated with it.
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Closeable