Package org.apache.commons.math.linear

Class DefaultRealMatrixPreservingVisitor

java.lang.Object

org.apache.commons.math.linear.DefaultRealMatrixPreservingVisitor

All Implemented Interfaces:

RealMatrixPreservingVisitor

public class DefaultRealMatrixPreservingVisitor
extends java.lang.Object
implements RealMatrixPreservingVisitor

Default implementation of the RealMatrixPreservingVisitor interface.

This class is a convenience to create custom visitors without defining all methods. This class provides default implementations that do nothing.

Since:

2.0

Constructor Summary

Constructors

Constructor	Description
DefaultRealMatrixPreservingVisitor()

Method Summary

Modifier and Type	Method	Description
double	end()	End visiting a matrix.
void	start(int rows, int columns, int startRow, int endRow, int startColumn, int endColumn)	Start visiting a matrix.
void	visit(int row, int column, double value)	Visit one matrix entry.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultRealMatrixPreservingVisitor

public DefaultRealMatrixPreservingVisitor()

Method Detail

start

public void start(int rows,
                  int columns,
                  int startRow,
                  int endRow,
                  int startColumn,
                  int endColumn)

Start visiting a matrix.

This method is called once before any entry of the matrix is visited.

Specified by:

start in interface RealMatrixPreservingVisitor

Parameters:

rows - number of rows of the matrix

columns - number of columns of the matrix

startRow - Initial row index

endRow - Final row index (inclusive)

startColumn - Initial column index

endColumn - Final column index (inclusive)

visit

public void visit(int row,
                  int column,
                  double value)
           throws MatrixVisitorException

Visit one matrix entry.

Specified by:

visit in interface RealMatrixPreservingVisitor

Parameters:

row - row index of the entry

column - column index of the entry

value - current value of the entry

Throws:

MatrixVisitorException - if something wrong occurs

end

public double end()

End visiting a matrix.

This method is called once after all entries of the matrix have been visited.

Specified by:

end in interface RealMatrixPreservingVisitor

Returns:

the value that the walkInXxxOrder must return