/* * Copyright 1999-2011 Alibaba Group. * * Licensed 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 com.alibaba.dubbo.rpc; import java.util.Map; /** * Invocation. (API, Prototype, NonThreadSafe) * * @serial Don't change the class name and package name. * @see com.alibaba.dubbo.rpc.Invoker#invoke(Invocation) * @see com.alibaba.dubbo.rpc.RpcInvocation * @author qian.lei * @author william.liangf */ public interface Invocation { /** * get method name. * * @serial * @return method name. */ String getMethodName(); /** * get parameter types. * * @serial * @return parameter types. */ Class<?>[] getParameterTypes(); /** * get arguments. * * @serial * @return arguments. */ Object[] getArguments(); /** * get attachments. * * @serial * @return attachments. */ Map<String, String> getAttachments(); /** * get attachment by key. * * @serial * @return attachment value. */ String getAttachment(String key); /** * get attachment by key with default value. * * @serial * @return attachment value. */ String getAttachment(String key, String defaultValue); /** * get the invoker in current context. * * @transient * @return invoker. */ Invoker<?> getInvoker(); }