/*
Copyright � 1999 CERN - European Organization for Nuclear Research.
Permission to use, copy, modify, distribute and sell this software and its documentation for any purpose
is hereby granted without fee, provided that the above copyright notice appear in all copies and
that both that copyright notice and this permission notice appear in supporting documentation.
CERN makes no representations about the suitability of this software for any purpose.
It is provided "as is" without expressed or implied warranty.
*/
package cern.colt.matrix.impl;
import cern.colt.matrix.DoubleMatrix1D;
import cern.colt.matrix.DoubleMatrix2D;
/**
1-d matrix holding <tt>double</tt> elements; either a view wrapping another 2-d matrix and therefore delegating calls to it.
@author wolfgang.hoschek@cern.ch
@version 1.0, 09/24/99
*/
class DelegateDoubleMatrix1D extends WrapperDoubleMatrix1D {
/*
* The elements of the matrix.
*/
protected DoubleMatrix2D content;
/*
* The row this view is bound to.
*/
protected int row;
public DelegateDoubleMatrix1D(DoubleMatrix2D newContent, int row) {
super(null);
if (row < 0 || row >= newContent.rows()) throw new IllegalArgumentException();
setUp(newContent.columns());
this.row=row;
this.content = newContent;
}
/**
* Returns the matrix cell value at coordinate <tt>index</tt>.
*
* <p>Provided with invalid parameters this method may return invalid objects without throwing any exception.
* <b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
* Precondition (unchecked): <tt>index<0 || index>=size()</tt>.
*
* @param index the index of the cell.
* @return the value of the specified cell.
*/
public double getQuick(int index) {
return content.getQuick(row,index);
}
/**
* Construct and returns a new empty matrix <i>of the same dynamic type</i> as the receiver, having the specified size.
* For example, if the receiver is an instance of type <tt>DenseDoubleMatrix1D</tt> the new matrix must also be of type <tt>DenseDoubleMatrix1D</tt>,
* if the receiver is an instance of type <tt>SparseDoubleMatrix1D</tt> the new matrix must also be of type <tt>SparseDoubleMatrix1D</tt>, etc.
* In general, the new matrix should have internal parametrization as similar as possible.
*
* @param size the number of cell the matrix shall have.
* @return a new empty matrix of the same dynamic type.
*/
public DoubleMatrix1D like(int size) {
return content.like1D(size);
}
/**
* Construct and returns a new 2-d matrix <i>of the corresponding dynamic type</i>, entirelly independent of the receiver.
* For example, if the receiver is an instance of type <tt>DenseDoubleMatrix1D</tt> the new matrix must be of type <tt>DenseDoubleMatrix2D</tt>,
* if the receiver is an instance of type <tt>SparseDoubleMatrix1D</tt> the new matrix must be of type <tt>SparseDoubleMatrix2D</tt>, etc.
*
* @param rows the number of rows the matrix shall have.
* @param columns the number of columns the matrix shall have.
* @return a new matrix of the corresponding dynamic type.
*/
public DoubleMatrix2D like2D(int rows, int columns) {
return content.like(rows,columns);
}
/**
* Sets the matrix cell at coordinate <tt>index</tt> to the specified value.
*
* <p>Provided with invalid parameters this method may access illegal indexes without throwing any exception.
* <b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
* Precondition (unchecked): <tt>index<0 || index>=size()</tt>.
*
* @param index the index of the cell.
* @param value the value to be filled into the specified cell.
*/
public void setQuick(int index, double value) {
content.setQuick(row,index, value);
}
}