org.geotools.data.collection
Class DelegateFeatureReader<T extends FeatureType,F extends Feature>

Object
  extended by DelegateFeatureReader<T,F>
All Implemented Interfaces:
Closeable, FeatureReader<T,F>
Direct Known Subclasses:
DelegateSimpleFeatureReader

public class DelegateFeatureReader<T extends FeatureType,F extends Feature>
extends Object
implements FeatureReader<T,F>

A FeatureReader that wraps up a normal FeatureIterator.

This class is useful for faking (and testing) the Resource based API against in memory datastructures. You are warned that to complete the illusion that Resource based IO is occuring content will be duplicated.

Author:
Jody Garnett, Refractions Research, Inc.

Constructor Summary
DelegateFeatureReader(T featureType, FeatureIterator<F> features)
           
 
Method Summary
 void close()
          Release the underlying resources associated with this stream.
 T getFeatureType()
          Return the FeatureType this reader has been configured to create.
 boolean hasNext()
          Query whether this FeatureReader has another Feature.
 F next()
          Reads the next Feature in the FeatureReader.
 
Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

DelegateFeatureReader

public DelegateFeatureReader(T featureType,
                             FeatureIterator<F> features)
Method Detail

getFeatureType

public T getFeatureType()
Description copied from interface: FeatureReader
Return the FeatureType this reader has been configured to create.

Specified by:
getFeatureType in interface FeatureReader<T extends FeatureType,F extends Feature>
Returns:
the FeatureType of the Features this FeatureReader will create.

next

public F next()
                       throws IOException,
                              IllegalAttributeException,
                              NoSuchElementException
Description copied from interface: FeatureReader
Reads the next Feature in the FeatureReader.

Specified by:
next in interface FeatureReader<T extends FeatureType,F extends Feature>
Returns:
The next feature in the reader.
Throws:
IOException - If an error occurs reading the Feature.
IllegalAttributeException - If the attributes read do not comply with the FeatureType.
NoSuchElementException - If there are no more Features in the Reader.

hasNext

public boolean hasNext()
                throws IOException
Description copied from interface: FeatureReader
Query whether this FeatureReader has another Feature.

Specified by:
hasNext in interface FeatureReader<T extends FeatureType,F extends Feature>
Returns:
True if there are more Features to be read. In other words, true if calls to next would return a feature rather than throwing an exception.
Throws:
IOException - If an error occurs determining if there are more Features.

close

public void close()
           throws IOException
Description copied from interface: FeatureReader
Release the underlying resources associated with this stream.

Specified by:
close in interface Closeable
Specified by:
close in interface FeatureReader<T extends FeatureType,F extends Feature>
Throws:
IOException - if an I/O error occurs


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