| /* |
| * 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.type.HugeType; |
| import org.apache.tinkerpop.gremlin.structure.Direction; |
| |
| public enum Directions implements SerialEnum { |
| |
| // TODO: add NONE enum for non-directional edges |
| |
| BOTH(0, "both"), |
| |
| OUT(1, "out"), |
| |
| IN(2, "in"); |
| |
| private byte code = 0; |
| private String name = null; |
| |
| static { |
| SerialEnum.register(Directions.class); |
| } |
| |
| Directions(int code, String name) { |
| assert code < 256; |
| this.code = (byte) code; |
| this.name = name; |
| } |
| |
| @Override |
| public byte code() { |
| return this.code; |
| } |
| |
| public String string() { |
| return this.name; |
| } |
| |
| public HugeType type() { |
| switch (this) { |
| case OUT: |
| return HugeType.EDGE_OUT; |
| case IN: |
| return HugeType.EDGE_IN; |
| default: |
| throw new IllegalArgumentException(String.format( |
| "Can't convert direction '%s' to HugeType", this)); |
| } |
| } |
| |
| public Directions opposite() { |
| if (this.equals(OUT)) { |
| return IN; |
| } else { |
| return this.equals(IN) ? OUT : BOTH; |
| } |
| } |
| |
| public Direction direction() { |
| switch (this) { |
| case OUT: |
| return Direction.OUT; |
| case IN: |
| return Direction.IN; |
| case BOTH: |
| return Direction.BOTH; |
| default: |
| throw new AssertionError(String.format( |
| "Unrecognized direction: '%s'", this)); |
| } |
| } |
| |
| public static Directions convert(Direction direction) { |
| switch (direction) { |
| case OUT: |
| return OUT; |
| case IN: |
| return IN; |
| case BOTH: |
| return BOTH; |
| default: |
| throw new AssertionError(String.format( |
| "Unrecognized direction: '%s'", direction)); |
| } |
| } |
| |
| public static Directions convert(HugeType edgeType) { |
| switch (edgeType) { |
| case EDGE_OUT: |
| return OUT; |
| case EDGE_IN: |
| return IN; |
| default: |
| throw new IllegalArgumentException(String.format( |
| "Can't convert type '%s' to Direction", edgeType)); |
| } |
| } |
| } |