/**
* (C) Copyright IBM Corp. 2010, 2015
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.ibm.bi.dml.runtime.functionobjects;
public class Not extends ValueFunction
{
private static final long serialVersionUID = -3137270229584267263L;
private static Not singleObj = null;
private Not() {
// nothing to do here
}
public static Not getNotFnObject() {
if ( singleObj == null )
singleObj = new Not();
return singleObj;
}
public Object clone() throws CloneNotSupportedException {
// cloning is not supported for singleton classes
throw new CloneNotSupportedException();
}
@Override
public boolean execute(boolean in) {
return !in;
}
}