001// Copyright 2006 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
015package org.apache.tapestry5.ioc;
016
017/**
018 * Obtained from a {@link org.apache.tapestry5.ioc.Messages}, used to format messages for a specific localized message
019 * key.
020 */
021public interface MessageFormatter
022{
023    /**
024     * Formats the message. The arguments are passed to {@link java.util.Formatter} as is with one exception: Object of
025     * type {@link Throwable} are converted to their {@link Throwable#getMessage()} (or, if that is null, to the name of
026     * the class).
027     *
028     * @param args
029     * @return formatted string
030     */
031    String format(Object... args);
032}