ucar.nc2
Class Indexer

java.lang.Object
  ucar.nc2.Indexer

Direct Known Subclasses:

RegularIndexer

public abstract class Indexer
extends java.lang.Object

Iterator to read/write subsets of an array.

Example for Integers:

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

      IndexIterator ii = values.getIndexIterator();
      while (index.hasNext()) {
        Indexer.Chunk chunk = index.next(); // LOOK not using chunk.getIndexPos()
        raf.seek ( chunk.getFilePos());
        for (int k=0; k




Author:
  
caron







Nested Class Summary




 class
Indexer.Chunk



          A contiguous chunk of data in the file, that is wanted for this subset.


 



Constructor Summary
Indexer()



           
 



Method Summary




abstract  int
getElemSize()



           



abstract  int
getTotalNelems()



           



abstract  boolean
hasNext()



           



abstract  Indexer.Chunk
next()



           


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





Constructor Detail



Indexer
public Indexer()






Method Detail



getTotalNelems
public abstract int getTotalNelems()



Returns:
total number of elements in the wanted subset.





getElemSize
public abstract int getElemSize()



Returns:
size of each element in bytes.





hasNext
public abstract boolean hasNext()



Returns:
true if theres more to do





next
public abstract Indexer.Chunk next()



Returns:
next chunk