| /* |
| * 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.hugegraph.type.define; |
| |
| import org.apache.hugegraph.backend.BackendException; |
| import org.apache.hugegraph.type.HugeType; |
| import org.apache.hugegraph.util.CollectionUtil; |
| import org.apache.hugegraph.util.E; |
| |
| import com.google.common.collect.HashBasedTable; |
| import com.google.common.collect.Table; |
| |
| public interface SerialEnum { |
| |
| byte code(); |
| |
| Table<Class<?>, Byte, SerialEnum> TABLE = HashBasedTable.create(); |
| |
| static void register(Class<? extends SerialEnum> clazz) { |
| Object enums; |
| try { |
| enums = clazz.getMethod("values").invoke(null); |
| } catch (Exception e) { |
| throw new BackendException(e); |
| } |
| for (SerialEnum e : CollectionUtil.<SerialEnum>toList(enums)) { |
| TABLE.put(clazz, e.code(), e); |
| } |
| } |
| |
| static <T extends SerialEnum> T fromCode(Class<T> clazz, byte code) { |
| @SuppressWarnings("unchecked") |
| T value = (T) TABLE.get(clazz, code); |
| if (value == null) { |
| E.checkArgument(false, "Can't construct %s from code %s", |
| clazz.getSimpleName(), code); |
| } |
| return value; |
| } |
| |
| static void registerInternalEnums() { |
| SerialEnum.register(Action.class); |
| SerialEnum.register(AggregateType.class); |
| SerialEnum.register(Cardinality.class); |
| SerialEnum.register(DataType.class); |
| SerialEnum.register(Directions.class); |
| SerialEnum.register(Frequency.class); |
| SerialEnum.register(HugeType.class); |
| SerialEnum.register(IdStrategy.class); |
| SerialEnum.register(IndexType.class); |
| SerialEnum.register(SchemaStatus.class); |
| } |
| } |