| /* |
| * 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.empire.db; |
| |
| /** |
| * |
| * DBJoinType contains the possibilities to join two database tables. |
| * |
| * |
| */ |
| public enum DBJoinType |
| { |
| /** |
| * SQL Left join |
| */ |
| LEFT, // =-1, |
| |
| /** |
| * SQL Inner join |
| */ |
| INNER, // = 0, |
| |
| /** |
| * SQL Right join |
| */ |
| RIGHT, // = 1 |
| |
| /** |
| * SQL Full join |
| */ |
| FULL; |
| |
| public static DBJoinType reversed(DBJoinType type) |
| { |
| switch(type) |
| { |
| case LEFT: |
| return RIGHT; |
| case RIGHT: |
| return LEFT; |
| default: |
| // no change |
| return type; |
| } |
| } |
| } |