/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.example.table;
/**
* Implementation of DataRow that is backed by a double array.
*
* @author Simon Fischer, Ingo Mierswa Exp $
*/
public class DoubleArrayDataRow extends DataRow {
private static final long serialVersionUID = -6335785895337884919L;
/** Holds the data for all attributes. */
private double[] data;
/** Creates a new data row backed by an primitive array. */
public DoubleArrayDataRow(double[] data) {
this.data = data;
}
public DoubleArrayDataRow(DoubleArrayDataRow dataRow) {
this.data = dataRow.getData();
}
public double[] getData() {
return data;
}
@Override
protected double get(int index, double defaultValue) {
return data[index];
}
/** Sets the given data for the given index. */
@Override
protected synchronized void set(int index, double value, double defaultValue) {
data[index] = value;
}
/**
* Creates a new array of the given size if necessary and copies the data into the new array.
*/
@Override
protected synchronized void ensureNumberOfColumns(int numberOfColumns) {
if (data.length >= numberOfColumns) {
return;
}
double[] newData = new double[numberOfColumns];
System.arraycopy(data, 0, newData, 0, data.length);
data = newData;
}
/** Returns a string representation of the data row. */
@Override
public String toString() {
StringBuffer result = new StringBuffer();
for (int i = 0; i < data.length; i++) {
result.append((i == 0 ? "" : ",") + data[i]);
}
return result.toString();
}
@Override
public int getType() {
return DataRowFactory.TYPE_DOUBLE_ARRAY;
}
}