org.geotools.data.store
Class ReTypingFeatureIterator

Object
  extended by ReTypingFeatureIterator
All Implemented Interfaces:
Closeable, SimpleFeatureIterator, FeatureIterator<SimpleFeature>

public class ReTypingFeatureIterator
extends Object
implements SimpleFeatureIterator

FeatureIterator wrapper which re-types features on the fly based on a target feature type.

Author:
Justin Deoliveira, The Open Planning Project

Constructor Summary
ReTypingFeatureIterator(SimpleFeatureIterator delegate, SimpleFeatureType source, SimpleFeatureType target)
           
 
Method Summary
 void close()
          Closes this iterator and releases any system resources associated with it.
 SimpleFeatureIterator getDelegate()
           
 boolean hasNext()
          Does another Feature exist in this Iteration.
 SimpleFeature next()
          Get the next Feature in this iteration.
protected  AttributeDescriptor[] typeAttributes(SimpleFeatureType original, SimpleFeatureType target)
          Supplies mapping from origional to target FeatureType.
 
Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ReTypingFeatureIterator

public ReTypingFeatureIterator(SimpleFeatureIterator delegate,
                               SimpleFeatureType source,
                               SimpleFeatureType target)
Method Detail

getDelegate

public SimpleFeatureIterator getDelegate()

hasNext

public boolean hasNext()
Description copied from interface: FeatureIterator
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.)

Specified by:
hasNext in interface FeatureIterator<SimpleFeature>
Returns:
true if more Features exist, false otherwise.

next

public SimpleFeature next()
Description copied from interface: FeatureIterator
Get the next Feature in this iteration.

Specified by:
next in interface FeatureIterator<SimpleFeature>
Returns:
The next Feature

typeAttributes

protected AttributeDescriptor[] typeAttributes(SimpleFeatureType original,
                                               SimpleFeatureType target)
Supplies mapping from origional to target FeatureType.

Will also ensure that origional can cover target

Parameters:
target - Desired FeatureType
origional - Origional FeatureType
Returns:
Mapping from originoal to target FeatureType
Throws:
IllegalArgumentException - if unable to provide a mapping

close

public void close()
Description copied from interface: FeatureIterator
Closes this iterator and releases any system resources associated with it.

Specified by:
close in interface Closeable
Specified by:
close in interface FeatureIterator<SimpleFeature>


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