001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.validation.beanvalidation;
018
019import java.util.Locale;
020import javax.validation.MessageInterpolator;
021
022import org.springframework.context.i18n.LocaleContextHolder;
023import org.springframework.util.Assert;
024
025/**
026 * Delegates to a target {@link MessageInterpolator} implementation but enforces Spring's
027 * managed Locale. Typically used to wrap the validation provider's default interpolator.
028 *
029 * @author Juergen Hoeller
030 * @since 3.0
031 * @see org.springframework.context.i18n.LocaleContextHolder#getLocale()
032 */
033public class LocaleContextMessageInterpolator implements MessageInterpolator {
034
035        private final MessageInterpolator targetInterpolator;
036
037
038        /**
039         * Create a new LocaleContextMessageInterpolator, wrapping the given target interpolator.
040         * @param targetInterpolator the target MessageInterpolator to wrap
041         */
042        public LocaleContextMessageInterpolator(MessageInterpolator targetInterpolator) {
043                Assert.notNull(targetInterpolator, "Target MessageInterpolator must not be null");
044                this.targetInterpolator = targetInterpolator;
045        }
046
047
048        @Override
049        public String interpolate(String message, Context context) {
050                return this.targetInterpolator.interpolate(message, context, LocaleContextHolder.getLocale());
051        }
052
053        @Override
054        public String interpolate(String message, Context context, Locale locale) {
055                return this.targetInterpolator.interpolate(message, context, locale);
056        }
057
058}