| /* |
| * 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. |
| */ |
| |
| /* |
| * This source file is based on code taken from SQLLine 1.0.2 |
| * See SQLLine notice in LICENSE |
| */ |
| package org.apache.hive.beeline; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| class DatabaseConnections { |
| private final List<DatabaseConnection> connections = new ArrayList<DatabaseConnection>(); |
| private int index = -1; |
| |
| public DatabaseConnection current() { |
| if (index != -1) { |
| return connections.get(index); |
| } |
| return null; |
| } |
| |
| public int size() { |
| return connections.size(); |
| } |
| |
| public Iterator<DatabaseConnection> iterator() { |
| return connections.iterator(); |
| } |
| |
| public void remove() { |
| if (index != -1) { |
| connections.remove(index); |
| } |
| while (index >= connections.size()) { |
| index--; |
| } |
| } |
| |
| public void setConnection(DatabaseConnection connection) { |
| if (connections.indexOf(connection) == -1) { |
| connections.add(connection); |
| } |
| index = connections.indexOf(connection); |
| } |
| |
| public int getIndex() { |
| return index; |
| } |
| |
| |
| public boolean setIndex(int index) { |
| if (index < 0 || index >= connections.size()) { |
| return false; |
| } |
| this.index = index; |
| return true; |
| } |
| } |