/**
* 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.operator.learner.associations;
import com.rapidminer.example.Attribute;
/**
* This is an {@link Item} based on boolean attributes.
*
* @author Sebastian Land, Ingo Mierswa
*/
public class BooleanAttributeItem implements Item {
private static final long serialVersionUID = -7963677912091349984L;
private int frequency = 0;
private String name;
public BooleanAttributeItem(Attribute item) {
this.name = item.getName();
}
@Override
public int getFrequency() {
return this.frequency;
}
@Override
public void increaseFrequency() {
this.frequency++;
}
public void increaseFrequency(double value) {
this.frequency += value;
}
@Override
public boolean equals(Object other) {
if (!(other instanceof BooleanAttributeItem)) {
return false;
}
BooleanAttributeItem o = (BooleanAttributeItem) other;
return (this.name.equals(o.name)) && (this.frequency == o.frequency);
}
@Override
public int hashCode() {
return this.name.hashCode() ^ Double.valueOf(this.frequency).hashCode();
}
@Override
public int compareTo(Item arg0) {
Item comparer = arg0;
// Collections.sort generates ascending order. Descending needed,
// therefore invert return values!
if (comparer.getFrequency() == this.getFrequency()) {
return (-1 * this.name.compareTo(arg0.toString()));
} else if (comparer.getFrequency() < this.getFrequency()) {
return -1;
} else {
return 1;
}
}
public String getName() {
return name;
}
@Override
public String toString() {
return this.name;
}
@Override
public void increaseFrequency(int value) {
frequency += value;
}
}