Package com.qfs.chunk

Interface IChunkBinding

All Known Implementing Classes:

ChunkSetBinding

public interface IChunkBinding

Represent the binding between two chunks.

Author:

ActiveViam

Method Summary

Modifier and Type	Method	Description
void	copy(int srcPos, int destPos, int length)	Uses the binding to contiguously copy data from the source to the destination.
void	transfer(int[] rowsMapping, int numRows)	Transfers a set of rows from our source chunk towards our destination chunk.
void	transferContiguously(int[] sourceRows, int numRows)	Transfers a number of rows from the source chunk and into the destination chunk, where they are written from 0 to n.

Method Detail

copy

void copy(int srcPos,
          int destPos,
          int length)

Uses the binding to contiguously copy data from the source to the destination.

Parameters:

srcPos - start position in the source

destPos - start position in the destination

length - length of the copy

transferContiguously

void transferContiguously(int[] sourceRows,
                          int numRows)

Transfers a number of rows from the source chunk and into the destination chunk, where they are written from 0 to n.

Parameters:

sourceRows - the indexes of the rows to transfer the data from

numRows - the number of rows to transfer

transfer

void transfer(int[] rowsMapping,
              int numRows)

Transfers a set of rows from our source chunk towards our destination chunk.

The mapping from the source rows to the target rows is described with an array of 2*n slots. Each even slot contains the index of the row to be copied from the source chunk and the following odd slot contains the index of the row into which the source data will be transferred.

Parameters:

rowsMapping - the mapping from source rows to target rows, as explained above

numRows - the number of rows to transfer