ucar.nc2.ft
Interface PointFeatureIterator

public interface PointFeatureIterator

An iterator over PointFeatures. You must complete the iteration or call finish(). Best to put in a try/finally block like:

  try {
   while (iter.hasNext())
     process(iter.next());
  } finally {
    iter.finish();
  }
  

Since:

Feb 18, 2008

Author:

caron

Nested Class Summary

static interface

PointFeatureIterator.Filter A filter on PointFeatures

Method Summary

void	finish() Make sure that the iterator is complete, and recover resources.
ucar.unidata.geoloc.LatLonRect	getBoundingBox() Get BoundingBox after iteration is finished, if calcBounds was set true
int	getCount() Get number of points after the iteration is finished, if calcBounds was set true
DateRange	getDateRange() Get DateRange of observation time after iteration is finished, if calcBounds was set true
boolean	hasNext() Check if another PointFeature is available
PointFeature	next() Returns the next PointFeature.
void	setBufferSize(int bytes) Hint to use this much memory in buffering the iteration.
void	setCalculateBounds(PointFeatureCollection collection) If this is set, then the iterator will calculate the bounding box, time range, and size, and make it available through getBoundingBox(), getDateRange(), and getSize().

Method Detail

hasNext

boolean hasNext()
                throws java.io.IOException

Check if another PointFeature is available

Returns:

true if another PointFeature is available

Throws:

java.io.IOException - on i/o error

next

PointFeature next()
                  throws java.io.IOException

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

Returns:

the next PointFeature

Throws:

java.io.IOException - on i/o error

finish

void finish()

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

setBufferSize

void setBufferSize(int bytes)

Hint to use this much memory in buffering the iteration. No guarentee that it will be used by the implementation.

Parameters:

bytes - amount of memory in bytes

setCalculateBounds

void setCalculateBounds(PointFeatureCollection collection)

If this is set, then the iterator will calculate the bounding box, time range, and size, and make it available through getBoundingBox(), getDateRange(), and getSize().

Parameters:

collection - if not null, on complete iteration set the results into the collection.

getBoundingBox

ucar.unidata.geoloc.LatLonRect getBoundingBox()

Get BoundingBox after iteration is finished, if calcBounds was set true

Returns:

BoundingBox of all returned points

getDateRange

DateRange getDateRange()

Get DateRange of observation time after iteration is finished, if calcBounds was set true

Returns:

DateRange of all returned points

getCount

int getCount()

Get number of points after the iteration is finished, if calcBounds was set true

Returns:

number of points in the iteration