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.bean.validation; 018 019import java.util.function.Supplier; 020 021import javax.validation.Configuration; 022import javax.validation.MessageInterpolator; 023import javax.validation.Validation; 024import javax.validation.Validator; 025import javax.validation.ValidatorFactory; 026 027 028/** 029 * This is the default validator provider. It creates a validator instance with the default message 030 * interpolator wrapped inside a {@link SessionLocaleInterpolator} so it is aware of Wicket's 031 * locale. Only one instance of the {@link Validator} is created. 032 * 033 * @author igor 034 * 035 */ 036public class DefaultValidatorProvider implements Supplier<Validator> 037{ 038 039 private Validator validator; 040 041 @Override 042 public Validator get() 043 { 044 if (validator == null) 045 { 046 Configuration<?> config = Validation.byDefaultProvider().configure(); 047 048 MessageInterpolator interpolator = config.getDefaultMessageInterpolator(); 049 interpolator = new SessionLocaleInterpolator(interpolator); 050 051 ValidatorFactory factory = config.messageInterpolator(interpolator) 052 .buildValidatorFactory(); 053 054 validator = factory.getValidator(); 055 } 056 return validator; 057 } 058}