| /*
|
| * 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; |
| |
| /** |
| * RPC invoke result. (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.RpcResult |
| * @author qianlei |
| * @author william.liangf |
| */ |
| public interface Result { |
| |
| /** |
| * Get invoke result. |
| * |
| * @return result. if no result return null. |
| */ |
| Object getValue();
|
| |
| /** |
| * Get exception. |
| * |
| * @return exception. if no exception return null. |
| */ |
| Throwable getException(); |
|
|
| /**
|
| * Has exception.
|
| *
|
| * @return has exception.
|
| */
|
| boolean hasException();
|
| |
| /** |
| * Recreate. |
| * |
| * <code> |
| * if (hasException()) { |
| * throw getException(); |
| * } else { |
| * return getValue(); |
| * } |
| * </code>
|
| *
|
| * @return result.
|
| * @throws if has exception throw it. |
| */ |
| Object recreate() throws Throwable; |
|
|
| /**
|
| * @deprecated Replace to getValue()
|
| * @see com.alibaba.dubbo.rpc.Result#getValue()
|
| */
|
| @Deprecated
|
| Object getResult();
|
| |
| } |