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}