ucar.nc2.iosp

Class LayoutTiled

java.lang.Object

ucar.nc2.iosp.LayoutTiled

All Implemented Interfaces:

Layout

public class LayoutTiled
extends java.lang.Object
implements Layout

For datasets where the data are stored in chunks. "Tiled" means that all chunks are assumed to be equal size. Chunks have an offset into the complete array. Chunks do not necessarily cover the array, missing data is possible.

Since:

Jan 9, 2008

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LayoutTiled.DataChunk
static interface	LayoutTiled.DataChunkIterator

Nested classes/interfaces inherited from interface ucar.nc2.iosp.Layout

Layout.Chunk

Constructor Summary

Constructors

Constructor and Description
LayoutTiled(LayoutTiled.DataChunkIterator chunkIterator, int[] chunkSize, int elemSize, Section wantSection) Constructor.

Method Summary

Modifier and Type	Method and Description
int	getElemSize() Get size of each element in bytes.
long	getTotalNelems() Get total number of elements in the wanted subset.
boolean	hasNext() Is there more to do
Layout.Chunk	next() Get the next chunk
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutTiled

public LayoutTiled(LayoutTiled.DataChunkIterator chunkIterator,
                   int[] chunkSize,
                   int elemSize,
                   Section wantSection)
            throws InvalidRangeException,
                   java.io.IOException

Constructor.

Parameters:

chunkIterator - iterator over all available data chunks

chunkSize - all chunks assumed to be the same size

elemSize - size of an element in bytes.

wantSection - the wanted section of data, contains a List of Range objects. Must be complete

Throws:

InvalidRangeException - if section invalid for this variable

java.io.IOException - on io error

Method Detail

getTotalNelems

public long getTotalNelems()

Description copied from interface: Layout

Get total number of elements in the wanted subset.

Specified by:

getTotalNelems in interface Layout

Returns:

total number of elements in the wanted subset.

getElemSize

public int getElemSize()

Description copied from interface: Layout

Get size of each element in bytes.

Specified by:

getElemSize in interface Layout

Returns:

size of each element in bytes.

hasNext

public boolean hasNext()

Description copied from interface: Layout

Is there more to do

Specified by:

hasNext in interface Layout

Returns:

true if theres more to do

next

public Layout.Chunk next()
                  throws java.io.IOException

Description copied from interface: Layout

Get the next chunk

Specified by:

next in interface Layout

Returns:

next chunk, or null if !hasNext()

Throws:

java.io.IOException - on i/o error

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object