Umesh Krishnaswamy | 345ee99 | 2012-12-13 20:29:48 -0800 | [diff] [blame] | 1 | /** |
| 2 | * Copyright 2012, Big Switch Networks, Inc. |
| 3 | * Originally created by David Erickson, Stanford University |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 6 | * not use this file except in compliance with the License. You may obtain |
| 7 | * a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 13 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 14 | * License for the specific language governing permissions and limitations |
| 15 | * under the License. |
| 16 | **/ |
| 17 | |
| 18 | package net.floodlightcontroller.devicemanager.internal; |
| 19 | |
| 20 | import java.util.Iterator; |
| 21 | |
| 22 | /** |
| 23 | * An iterator for handling device index queries |
| 24 | */ |
| 25 | public class DeviceIndexInterator implements Iterator<Device> { |
| 26 | private DeviceManagerImpl deviceManager; |
| 27 | private Iterator<Long> subIterator; |
| 28 | |
| 29 | /** |
| 30 | * Construct a new device index iterator referring to a device manager |
| 31 | * instance and an iterator over device keys |
| 32 | * |
| 33 | * @param deviceManager the device manager |
| 34 | * @param subIterator an iterator over device keys |
| 35 | */ |
| 36 | public DeviceIndexInterator(DeviceManagerImpl deviceManager, |
| 37 | Iterator<Long> subIterator) { |
| 38 | super(); |
| 39 | this.deviceManager = deviceManager; |
| 40 | this.subIterator = subIterator; |
| 41 | } |
| 42 | |
| 43 | @Override |
| 44 | public boolean hasNext() { |
| 45 | return subIterator.hasNext(); |
| 46 | } |
| 47 | |
| 48 | @Override |
| 49 | public Device next() { |
| 50 | Long next = subIterator.next(); |
| 51 | return deviceManager.deviceMap.get(next); |
| 52 | } |
| 53 | |
| 54 | @Override |
| 55 | public void remove() { |
| 56 | subIterator.remove(); |
| 57 | } |
| 58 | |
| 59 | } |