Java tutorial
/* * Copyright 2014 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package io.netty.handler.codec.stomp; import io.netty.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.util.CharsetUtil; import io.netty.util.internal.ObjectUtil; /** * Default implementation of {@link StompFrame}. */ public class DefaultStompFrame extends DefaultStompHeadersSubframe implements StompFrame { private final ByteBuf content; public DefaultStompFrame(StompCommand command) { this(command, Unpooled.buffer(0)); } public DefaultStompFrame(StompCommand command, ByteBuf content) { this(command, content, null); } DefaultStompFrame(StompCommand command, ByteBuf content, DefaultStompHeaders headers) { super(command, headers); this.content = ObjectUtil.checkNotNull(content, "content"); } @Override public ByteBuf content() { return content; } @Override public StompFrame copy() { return replace(content.copy()); } @Override public StompFrame duplicate() { return replace(content.duplicate()); } @Override public StompFrame retainedDuplicate() { return replace(content.retainedDuplicate()); } @Override public StompFrame replace(ByteBuf content) { return new DefaultStompFrame(command, content, headers.copy()); } @Override public int refCnt() { return content.refCnt(); } @Override public StompFrame retain() { content.retain(); return this; } @Override public StompFrame retain(int increment) { content.retain(increment); return this; } @Override public StompFrame touch() { content.touch(); return this; } @Override public StompFrame touch(Object hint) { content.touch(hint); return this; } @Override public boolean release() { return content.release(); } @Override public boolean release(int decrement) { return content.release(decrement); } @Override public String toString() { return "DefaultStompFrame{" + "command=" + command + ", headers=" + headers + ", content=" + content.toString(CharsetUtil.UTF_8) + '}'; } }