001/*
002 * Copyright 2002-2013 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.web.socket.sockjs.frame;
018
019import org.springframework.util.Assert;
020
021/**
022 * A default implementation of
023 * {@link org.springframework.web.socket.sockjs.frame.SockJsFrameFormat} that relies
024 * on {@link java.lang.String#format(String, Object...)}..
025 *
026 * @author Rossen Stoyanchev
027 * @since 4.0
028 */
029public class DefaultSockJsFrameFormat implements SockJsFrameFormat {
030
031        private final String format;
032
033
034        public DefaultSockJsFrameFormat(String format) {
035                Assert.notNull(format, "format must not be null");
036                this.format = format;
037        }
038
039
040        @Override
041        public String format(SockJsFrame frame) {
042                return String.format(this.format, preProcessContent(frame.getContent()));
043        }
044
045        protected String preProcessContent(String content) {
046                return content;
047        }
048
049}