001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.validation; 018 019import org.apache.wicket.util.io.IClusterable; 020 021/** 022 * Interface representing a validator that can validate an {@link IValidatable} object. 023 * <p> 024 * Unless the validator implements the {@link INullAcceptingValidator} interface as well, Wicket 025 * will not pass <code>null</code> values to the {@link IValidator#validate(IValidatable)} method. 026 * 027 * @author Jonathan Locke 028 * @author Igor Vaynberg (ivaynberg) 029 * @param <T> 030 * type of validatable value 031 * @since 1.2.6 032 */ 033@FunctionalInterface 034public interface IValidator<T> extends IClusterable 035{ 036 /** 037 * Validates the <code>IValidatable</code> instance. Validation errors should be reported using 038 * the {@link IValidatable#error(IValidationError)} method. 039 * 040 * @param validatable 041 * the <code>IValidatable</code> instance being validated 042 */ 043 void validate(IValidatable<T> validatable); 044}