KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > jetspeed > services > daemonfactory > DaemonFactory


1 /*
2  * Copyright 2000-2001,2004 The Apache Software Foundation.
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
17 package org.apache.jetspeed.services.daemonfactory;
18
19 import org.apache.jetspeed.daemon.Daemon;
20 import org.apache.jetspeed.daemon.DaemonEntry;
21 import org.apache.jetspeed.daemon.DaemonContext;
22 import org.apache.jetspeed.daemon.DaemonException;
23 import org.apache.jetspeed.daemon.DaemonNotFoundException;
24 import org.apache.turbine.services.TurbineServices;
25
26 /**
27 @author <a HREF="mailto:burton@apache.org">Kevin A. Burton</a>
28 @version $Id: DaemonFactory.java,v 1.4 2004/02/23 03:29:24 jford Exp $
29 */
30 public class DaemonFactory {
31     
32     protected static final DaemonFactoryService getService() {
33         return (DaemonFactoryService)TurbineServices
34             .getInstance()
35             .getService(DaemonFactoryService.SERVICE_NAME);
36     }
37     
38     /**
39     <p>
40     Starts any daemons that need processing.
41     </p>
42     
43     <p>
44     This should be called right after init() so that any daemons that need to be
45     started will be. If you need to do any per-daemon initialization then do so
46     before calling start()
47     </p>
48     */
49     public static void start() {
50         getService().start();
51     }
52     
53     /**
54     Allows a Daemon to define its Thread priority through a factory. The Thread
55     that this object should return should be an implementation of itself.
56     */
57     public static Daemon getDaemon( DaemonEntry entry ) throws DaemonException {
58         return getService().getDaemon( entry );
59     }
60
61     /**
62     Get a daemon with the given classname.
63     
64     @see #getDaemon( DaemonEntry entry )
65     */
66     public static Daemon getDaemon( String JavaDoc classname ) throws DaemonException {
67         return getService().getDaemon( classname );
68     }
69
70     /**
71     */
72     public static DaemonContext getDaemonContext() {
73         return getService().getDaemonContext();
74     }
75
76     /**
77     Kicks of processing of a Daemon. Does the same thing as getDaemon() but
78     also creates a thread and runs the daemon.
79     */
80     public static void process( DaemonEntry entry ) throws DaemonException {
81         getService().process( entry );
82     }
83
84     /**
85     */
86     public static int getStatus(DaemonEntry entry) {
87         return getService().getStatus( entry );
88     }
89
90     /**
91     Get the last known result of the given DaemonEntry's processing
92     */
93     public static int getResult(DaemonEntry entry) {
94         return getService().getResult( entry );
95     }
96
97     /**
98     Get the last known message of the given DaemonEntry's processing
99     */
100     public static String JavaDoc getMessage( DaemonEntry entry ) {
101         return getService().getMessage( entry );
102     }
103     
104     /**
105     Get the current known DaemonEntries within the DaemonFactory
106     */
107     public static DaemonEntry[] getDaemonEntries() {
108         return getService().getDaemonEntries();
109     }
110
111     /**
112     Given the name of a DaemonEntry... get it from the DaemonFactory
113     */
114     public static DaemonEntry getDaemonEntry(String JavaDoc name)
115         throws DaemonNotFoundException {
116         return getService().getDaemonEntry( name );
117     }
118     
119 }
120
Popular Tags