| /* $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.etch.util.cmd; |
| |
| /** |
| * Description of ParityConstraint. |
| */ |
| public class ParityConstraint implements Constraint |
| { |
| /** |
| * Constructs the ParityConstraint. |
| * |
| * @param wantsOdd |
| */ |
| public ParityConstraint( boolean wantsOdd ) |
| { |
| this.wantsOdd = wantsOdd; |
| } |
| |
| private final boolean wantsOdd; |
| |
| public void checkValue( Object value ) throws Exception |
| { |
| int v = ((Integer) value).intValue(); |
| boolean valueIsOdd = (v & 1) != 0; |
| if (valueIsOdd != wantsOdd) |
| throw new Exception( wantsOdd ? "is not odd" : "is not even" ); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return wantsOdd ? "must be odd" : "must be even"; |
| } |
| } |