/*
* 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.wicket.validation;
import org.apache.wicket.util.io.IClusterable;
/**
* Interface representing a validator that can validate an {@link IValidatable} object.
* <p>
* Unless the validator implements the {@link INullAcceptingValidator} interface as well, Wicket
* will not pass <code>null</code> values to the {@link IValidator#validate(IValidatable)} method.
*
* @author Jonathan Locke
* @author Igor Vaynberg (ivaynberg)
* @param <T>
* type of validatable value
* @since 1.2.6
*/
@FunctionalInterface
public interface IValidator<T> extends IClusterable
{
/**
* Validates the <code>IValidatable</code> instance. Validation errors should be reported using
* the {@link IValidatable#error(IValidationError)} method.
*
* @param validatable
* the <code>IValidatable</code> instance being validated
*/
void validate(IValidatable<T> validatable);
}