Package org.geotools.data

Class EmptyFeatureWriter

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Cleans up after Empty FeatureWriter.
      SimpleFeatureType getFeatureType()
      FeatureType this reader has been configured to create.
      boolean hasNext()
      There is no next Feature.
      SimpleFeature next()
      Throws NoSuchElementException as this is an Empty FeatureWriter.
      void remove()
      Removes current Feature, must be called before hasNext.
      void write()
      Writes the current Feature, must be called before hasNext.

      • Methods inherited from class Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • EmptyFeatureWriter

        public EmptyFeatureWriter​(SimpleFeatureType featureType)
        An Empty FeatureWriter of the provided featureType.

    • Method Detail

      • remove

        public void remove()
            throws IOException
        Description copied from interface: FeatureWriter
        Removes current Feature, must be called before hasNext.

        FeatureWriters will need to allow all FeatureSources of the same typeName to issue a FeatureEvent event of type FeatureEvent.FEATURES_REMOVED when this method is called.

        If this FeatureWriter is opperating against a Transaction FEATURES_REMOVED events should only be sent to FeatureSources operating on the same Transaction. When Transaction commit() is called other FeatureSources will be informed of the modifications.

        When the current Feature has been provided as new content, this method "cancels" the add opperation (and notification needed).

        Specified by:
        remove in interface FeatureWriter<SimpleFeatureType,​SimpleFeature>
        Throws:
        IOException
        See Also:
        FeatureWriter.remove()

      • write

        public void write()
           throws IOException
        Description copied from interface: FeatureWriter
        Writes the current Feature, must be called before hasNext.

        FeautreWriters will need to allow FeatureSources of the same typeName to issue a FeatureEvent:

        • FeatureEvent.FEATURES_ADDED: when next() has been called with hasNext() equal to false.
        • FeatureEvent.FEATURES_MODIFIED: when next has been called with hasNext() equal to true and the resulting Feature has indeed been modified.

        If this FeatureWriter is opperating against a Transaction the FEATURES_MODIFIED or FEATURES_ADDED events should only be sent to FeatureSources opperating on the same Transaction. When Transaction commit() is called other FeatureSources will be informed of the modifications.

        If you have not called write() when you call hasNext() or next(), no modification will occur().

        Specified by:
        write in interface FeatureWriter<SimpleFeatureType,​SimpleFeature>
        Throws:
        IOException
        See Also:
        FeatureWriter.remove()