Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | /**
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| 2 | * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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| 3 | * you may not use this file except in compliance with the License.
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| 4 | * You may obtain a copy of the License at
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| 5 | *
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| 6 | * http://www.apache.org/licenses/LICENSE-2.0
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| 7 | *
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| 8 | * Unless required by applicable law or agreed to in writing, software
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| 9 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 10 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 11 | * See the License for the specific language governing permissions and
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| 12 | * limitations under the License.
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| 13 | */
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| 14 | package org.jivesoftware.smackx.pubsub;
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| 15 |
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| 16 | import java.util.Collections;
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| 17 | import java.util.List;
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| 18 |
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| 19 | /**
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| 20 | * Base class to represents events that are associated to subscriptions.
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| 21 | *
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| 22 | * @author Robin Collier
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| 23 | */
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| 24 | abstract public class SubscriptionEvent extends NodeEvent
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| 25 | {
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| 26 | private List<String> subIds = Collections.EMPTY_LIST;
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| 27 |
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| 28 | /**
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| 29 | * Construct an event with no subscription id's. This can
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| 30 | * occur when there is only one subscription to a node. The
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| 31 | * event may or may not report the subscription id along
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| 32 | * with the event.
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| 33 | *
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| 34 | * @param nodeId The id of the node the event came from
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| 35 | */
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| 36 | protected SubscriptionEvent(String nodeId)
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| 37 | {
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| 38 | super(nodeId);
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| 39 | }
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| 40 |
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| 41 | /**
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| 42 | * Construct an event with multiple subscriptions.
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| 43 | *
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| 44 | * @param nodeId The id of the node the event came from
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| 45 | * @param subscriptionIds The list of subscription id's
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| 46 | */
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| 47 | protected SubscriptionEvent(String nodeId, List<String> subscriptionIds)
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| 48 | {
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| 49 | super(nodeId);
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| 50 |
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| 51 | if (subscriptionIds != null)
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| 52 | subIds = subscriptionIds;
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| 53 | }
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| 54 |
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| 55 | /**
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| 56 | * Get the subscriptions this event is associated with.
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| 57 | *
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| 58 | * @return List of subscription id's
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| 59 | */
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| 60 | public List<String> getSubscriptions()
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| 61 | {
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| 62 | return Collections.unmodifiableList(subIds);
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| 63 | }
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| 64 |
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| 65 | /**
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| 66 | * Set the list of subscription id's for this event.
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| 67 | *
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| 68 | * @param subscriptionIds The list of subscription id's
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| 69 | */
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| 70 | protected void setSubscriptions(List<String> subscriptionIds)
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| 71 | {
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| 72 | if (subscriptionIds != null)
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| 73 | subIds = subscriptionIds;
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| 74 | }
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| 75 | }
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