Package net.messagevortex.router.operation

Class RedundancyMatrix

java.lang.Object

net.messagevortex.router.operation.Matrix

net.messagevortex.router.operation.VandermondeMatrix

net.messagevortex.router.operation.RedundancyMatrix

public class RedundancyMatrix
extends VandermondeMatrix

Creates a redundancy matrixContent or a recovery matrixContent for the redundancy operations.

Field Summary

Fields inherited from class net.messagevortex.router.operation.Matrix

MAX_CACHE

Constructor Summary

Constructors

Constructor	Description
RedundancyMatrix(int dataRows, int total, MathMode mode)	Creates a redundancy matrixContent based on vnadermonde matrices.
RedundancyMatrix(int dataRows, int total, MathMode mode, boolean noCache, boolean noNormalize)	Creates a redundancy matrixContent based on vandermonde matrices.
RedundancyMatrix(RedundancyMatrix r)

Method Summary

Modifier and Type	Method	Description
Matrix	getRecoveryMatrix(int[] missingRowIndex)	Calculates a matrixContent to recover all data rows given the missing rows.

Methods inherited from class net.messagevortex.router.operation.Matrix

divRow, enableMatrixCache, equals, flipRow, getAsByteArray, getField, getInverse, getRow, getRowAsByteArray, getX, getY, hashCode, mul, randomMatrix, removeRow, setField, setModulo, toString, transformColumn, transformRow, unitMatrix

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

RedundancyMatrix

public RedundancyMatrix(RedundancyMatrix r)

RedundancyMatrix

public RedundancyMatrix(int dataRows,
 int total,
 MathMode mode)

Creates a redundancy matrixContent based on vnadermonde matrices.

Parameters:

dataRows - the number of data rows

total - the number of total rows (redundancy + data rows)

mode - the math mode to be used

RedundancyMatrix

public RedundancyMatrix(int dataRows,
 int total,
 MathMode mode,
 boolean noCache,
 boolean noNormalize)

Creates a redundancy matrixContent based on vandermonde matrices.

Parameters:

dataRows - the number of data rows

total - the number of total rows (redundancy + data rows)

mode - the math mode to be used

noCache - if set the result is not cached

noNormalize - if set the matrix is not normalized upon creation

Method Details

getRecoveryMatrix

public Matrix getRecoveryMatrix(int[] missingRowIndex)

Calculates a matrixContent to recover all data rows given the missing rows.

Parameters:

missingRowIndex - Index of the rows missing data

Returns:

a square matrixContent rebuilding the data vector