| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.hadoop.yarn.state; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Public; |
| import org.apache.hadoop.classification.InterfaceStability.Evolving; |
| |
| /** |
| * Hook for Transition. This lead to state machine to move to |
| * the post state as registered in the state machine. |
| */ |
| @Public |
| @Evolving |
| public interface SingleArcTransition<OPERAND, EVENT> { |
| /** |
| * Transition hook. |
| * |
| * @param operand the entity attached to the FSM, whose internal |
| * state may change. |
| * @param event causal event |
| */ |
| public void transition(OPERAND operand, EVENT event); |
| |
| } |
