| /* |
| * 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.commons.math.util; |
| |
| import org.apache.commons.math.MathException; |
| |
| /** |
| * Subclasses implementing this interface can transform Objects to doubles. |
| * @version $Revision: 811685 $ $Date: 2009-09-05 19:36:48 +0200 (sam. 05 sept. 2009) $ |
| * |
| * No longer extends Serializable since 2.0 |
| * |
| */ |
| public interface NumberTransformer { |
| |
| /** |
| * Implementing this interface provides a facility to transform |
| * from Object to Double. |
| * |
| * @param o the Object to be transformed. |
| * @return the double value of the Object. |
| * @throws MathException if the Object can not be transformed into a Double. |
| */ |
| double transform(Object o) throws MathException; |
| } |