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;
020
021import javax.validation.MessageInterpolator;
022
023import org.springframework.context.i18n.LocaleContextHolder;
024import org.springframework.util.Assert;
025
026/**
027 * Delegates to a target {@link MessageInterpolator} implementation but enforces Spring's
028 * managed Locale. Typically used to wrap the validation provider's default interpolator.
029 *
030 * @author Juergen Hoeller
031 * @since 3.0
032 * @see org.springframework.context.i18n.LocaleContextHolder#getLocale()
033 */
034public class LocaleContextMessageInterpolator implements MessageInterpolator {
035
036        private final MessageInterpolator targetInterpolator;
037
038
039        /**
040         * Create a new LocaleContextMessageInterpolator, wrapping the given target interpolator.
041         * @param targetInterpolator the target MessageInterpolator to wrap
042         */
043        public LocaleContextMessageInterpolator(MessageInterpolator targetInterpolator) {
044                Assert.notNull(targetInterpolator, "Target MessageInterpolator must not be null");
045                this.targetInterpolator = targetInterpolator;
046        }
047
048
049        @Override
050        public String interpolate(String message, Context context) {
051                return this.targetInterpolator.interpolate(message, context, LocaleContextHolder.getLocale());
052        }
053
054        @Override
055        public String interpolate(String message, Context context, Locale locale) {
056                return this.targetInterpolator.interpolate(message, context, locale);
057        }
058
059}