ds.granules.util

Class MatrixFactory

java.lang.Object

ds.granules.util.MatrixFactory

public class MatrixFactory
extends java.lang.Object

This is a Factory class which creates matrices that are stored either in row major or column major formats.

Author:

Shrideep Pallickara

Constructor Summary

Constructors

Constructor and Description
MatrixFactory()

Method Summary

Modifier and Type	Method and Description
static MatrixFactory	getInstance() Deprecated.
Matrix	getMatrix(java.lang.String filename) Retrieve the Matrix associated with the matrix that was stored in a file.
Matrix	getMatrix(java.lang.String filename, int numOfRows, int numOfColumns, int entriesType, boolean rowMajorFormat) Retrieve/create a matrix based on the specified arguments.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MatrixFactory

public MatrixFactory()

Method Detail

getInstance

@Deprecated
public static MatrixFactory getInstance()

Deprecated.

Retrieve the singleton instance of the Matrix Factory.

Returns:

the matrix factory instance.

getMatrix

public Matrix getMatrix(java.lang.String filename,
                        int numOfRows,
                        int numOfColumns,
                        int entriesType,
                        boolean rowMajorFormat)
                 throws java.io.IOException

Retrieve/create a matrix based on the specified arguments.

Parameters:

filename - The file associated with the matrix.

numOfRows - The number of rows within the matrix

numOfColumns - The number of columns for this matrix

entriesType - The DATA type for the entries. See the Matrix class in this package for more details.

rowMajorFormat - Indicates whether the data is stored (needs to be stored) in ROW MAJOR format.

Returns:

The initialized Matrix instance.

Throws:

java.io.IOException - If there are problems reading/writing from the file system.

getMatrix

public Matrix getMatrix(java.lang.String filename)
                 throws java.io.IOException

Retrieve the Matrix associated with the matrix that was stored in a file.

Parameters:

filename - The file where the matrix was stored

Returns:

The Matrix instance

Throws:

java.io.IOException - If there are problems reading/writing from the file system.