ucar.nc2.iosp
Class Indexer

java.lang.Object
  ucar.nc2.iosp.Indexer

Direct Known Subclasses:

RegularIndexer, RegularLayout, RegularSectionLayout, SegmentedLayout, SingleChunkIndexer

Deprecated. use Layout

public abstract class Indexer
extends java.lang.Object

Iterator to read/write subsets of an array. The transfer is broken into "chunks" that are contiguous in both the source and destination. Iterating over all the chunks should give the wanted section of data. However, there may be missing values, so the caller cant count on all elements getting touched.

Example for Integers:

 Reading:
     int[] pa = new int[size];
     Indexer index;
     while (index.hasNext()) {
        Indexer.Chunk chunk = index.next();
        raf.seek ( chunk.getFilePos());
        raf.readInt( pa, chunk.getStartElem(), chunk.getNelems()); // copy into primitive array
      }

   Writing:
      IndexIterator ii = values.getIndexIterator();
      while (index.hasNext()) {
        Indexer.Chunk chunk = index.next();
        raf.seek ( chunk.getFilePos());
        for (int k=0; k









Nested Class Summary




 class
Indexer.Chunk



          Deprecated. A chunk of data that is contiguous in both the source and destination.


 



Constructor Summary
Indexer()



          Deprecated.  
 



Method Summary




abstract  int
getElemSize()



          Deprecated.  



abstract  long
getTotalNelems()



          Deprecated.  



abstract  boolean
hasNext()



          Deprecated.  



abstract  Indexer.Chunk
next()



          Deprecated. Get the next chunk



protected  java.lang.String
printa(int[] a)



          Deprecated.  



protected  void
printa(java.lang.String name,
       int[] a)



          Deprecated.  


 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 





Constructor Detail



Indexer
public Indexer()

Deprecated. 




Method Detail



getTotalNelems
public abstract long getTotalNelems()

Deprecated. 


Returns:
total number of elements in the wanted subset.





getElemSize
public abstract int getElemSize()

Deprecated. 


Returns:
size of each element in bytes.





hasNext
public abstract boolean hasNext()

Deprecated. 


Returns:
true if theres more to do





next
public abstract Indexer.Chunk next()
                            throws java.io.IOException

Deprecated. 
Get the next chunk



Returns:
next chunk, or null if !hasNext()
Throws:
java.io.IOException - on i/o error





printa
protected java.lang.String printa(int[] a)

Deprecated. 







printa
protected void printa(java.lang.String name,
                      int[] a)

Deprecated.