/**
* 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.tools.expression.internal.function.comparison;
import java.util.Date;
import com.rapidminer.tools.expression.FunctionDescription;
/**
* Class for the NOT EQUALS function that has 2 arbitrary inputs
*
* @author Sabrina Kirstein
*
*/
public class NotEquals extends AbstractEqualityFunctionWith2Inputs {
/**
* Constructs a NOT EQUALS Function with 2 parameters with {@link FunctionDescription}
*/
public NotEquals() {
super("comparison.not_equals");
}
@Override
protected Boolean compute(double left, double right) {
if (Double.isNaN(left) && Double.isNaN(right)) {
return false;
}
if (Double.isNaN(left) || Double.isNaN(right)) {
return true;
}
return left != right;
}
@Override
protected Boolean compute(double left, Boolean right) {
if (Double.isNaN(left) || right == null) {
return true;
}
double rightValue = right ? 1 : 0;
return left != rightValue;
}
@Override
protected Boolean compute(Boolean left, Boolean right) {
if (left == null && right == null) {
return false;
} else if (left == null || right == null) {
return true;
}
return left != right;
}
@Override
protected Boolean compute(double left, String right) {
if (right == null || Double.isNaN(left)) {
return true;
}
try {
return left != Double.parseDouble(right);
} catch (Exception e) {
return true;
}
}
@Override
protected Boolean compute(double left, Date right) {
if (right == null || Double.isNaN(left)) {
return true;
}
return right.getTime() != left;
}
@Override
protected Boolean compute(Boolean left, String right) {
if (left == null || right == null) {
return true;
}
return !(left + "").equals(right);
}
@Override
protected Boolean compute(Boolean left, Date right) {
return true;
}
@Override
protected Boolean compute(String left, String right) {
if (left == null && right == null) {
return false;
}
if (left == null || right == null) {
return true;
}
return !left.equals(right);
}
@Override
protected Boolean compute(String left, Date right) {
return true;
}
@Override
protected Boolean compute(Date left, Date right) {
if (left == null && right == null) {
return false;
}
if (left == null || right == null) {
return true;
}
return !left.equals(right);
}
}