001    // Copyright 2009 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    package org.apache.tapestry5.internal.beanvalidator;
015    
016    import java.util.Locale;
017    
018    import javax.validation.MessageInterpolator;
019    
020    import org.apache.tapestry5.ioc.services.ThreadLocale;
021    /**
022     * The default message interpolation algorithm uses {@link Locale#getDefault()}. This behavior is not appropriate for Tapestry applications, 
023     * thus we need a {@link Locale} aware message interpolator.
024     */
025    public class MessageInterpolatorImpl implements MessageInterpolator 
026    {
027            private final MessageInterpolator delegate;
028            private final ThreadLocale threadLocale;
029            
030            public MessageInterpolatorImpl(MessageInterpolator delegate, ThreadLocale threadLocale) 
031            {
032                    this.delegate = delegate;
033                    this.threadLocale = threadLocale;
034            }
035    
036            /**
037             * @see javax.validation.MessageInterpolator#interpolate(java.lang.String, javax.validation.MessageInterpolator.Context)
038             */
039            public String interpolate(String messageTemplate, Context context) 
040            {
041                    return interpolate(messageTemplate, context, threadLocale.getLocale());
042            }
043    
044            /**
045             * @see javax.validation.MessageInterpolator#interpolate(java.lang.String, javax.validation.MessageInterpolator.Context, java.util.Locale)
046             */
047            public String interpolate(String messageTemplate, Context context, Locale locale) 
048            {
049                    return this.delegate.interpolate(messageTemplate, context, locale);
050            }
051    
052    }