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Java > Open Source Codes > com > buchuki > ensmer > prevayler > queries > SetAreaUserPositionTransaction


1 /*
2  * Copyright 2004 Dusty Phillips
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.buchuki.ensmer.prevayler.queries;
17
18 import java.util.Date JavaDoc;
19 import javax.vecmath.Matrix4f;
20 import com.buchuki.ensmer.prevayler.*;
21 import org.prevayler.*;
22
23 /**
24  * Query to change the user's prevayled position in a particular area
25  *
26  * @author Dusty Phillips [dusty@buchuki.com]
27  */
28 public class SetAreaUserPositionTransaction implements Transaction {
29
30     /**
31      * Give it a SerialVersionUID so it can be reinstantiated by later versions
32      * of the class
33      */
34     static final long serialVersionUID = 20050328L;
35
36     /**
37      * Create Transaction with a reference to the id of the Area to have the user
38      * position prevayled for and the Matrix4f containing the position
39      *
40      * @param id the id for the new area
41      * @param position the user position to be prevayled
42      */
43     public SetAreaUserPositionTransaction(Long JavaDoc id, Matrix4f position) {
44         this.id = id;
45         this.position = position;
46     }
47
48     /**
49      * Execute the transaction
50      *
51      * @param system the EnsmerPrevayler to operate on
52      * @param ignored the time at which the transaction was executed; ignored in
53      * this case
54      */
55     public void executeOn(Object JavaDoc system, Date JavaDoc ignored) {
56         ((EnsmerPrevayler) system).getAreaPrevayler().setUserPosition(id, position);
57     }
58
59     /**
60      * The AreaID to serialize
61      */
62     private Long JavaDoc id;
63
64     /**
65      * The position to serialize
66      */
67     private Matrix4f position;
68 }
69
70
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