| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * 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 org.apache.cocoon.components.elementprocessor.types; |
| |
| import java.io.IOException; |
| |
| /** |
| * This interface allows a client of NumericConverter to apply more |
| * restrictive rules to the number that the NumericConverter obtained. |
| * |
| * @author Marc Johnson (marc_johnson27591@hotmail.com) |
| * @version CVS $Id: Validator.java,v 1.4 2004/03/05 13:02:07 bdelacretaz Exp $ |
| */ |
| public interface Validator |
| { |
| |
| /** |
| * Is this number valid? If so, return a null |
| * IOException. Otherwise, return an IOException whose message |
| * explains why the number is not valid. |
| * |
| * @param number the Number holding the value. Guaranteed non-null |
| * |
| * @return a null IOException if the value is ok, else a real |
| * IOException |
| */ |
| |
| public IOException validate(final Number number); |
| } // end public interface Validator |
