01: /*_############################################################################
02: _##
03: _## SNMP4J - SchedulerTask.java
04: _##
05: _## Copyright (C) 2003-2008 Frank Fock and Jochen Katz (SNMP4J.org)
06: _##
07: _## Licensed under the Apache License, Version 2.0 (the "License");
08: _## you may not use this file except in compliance with the License.
09: _## You may obtain a copy of the License at
10: _##
11: _## http://www.apache.org/licenses/LICENSE-2.0
12: _##
13: _## Unless required by applicable law or agreed to in writing, software
14: _## distributed under the License is distributed on an "AS IS" BASIS,
15: _## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16: _## See the License for the specific language governing permissions and
17: _## limitations under the License.
18: _##
19: _##########################################################################*/
20:
21: package org.snmp4j.util;
22:
23: /**
24: * The <code>SchedulerTask</code> extends the <code>Runnable</code> interface
25: * by methods that are needed for recurrent execution of a task.
26: *
27: * @author Frank Fock
28: * @version 1.9
29: * @since 1.6
30: */
31: public interface SchedulerTask extends WorkerTask {
32:
33: /**
34: * Checks whether this task is ready to be executed. A task is
35: * @return
36: * <code>true</code> if this task can be executed now.
37: */
38: boolean isReadyToRun();
39:
40: /**
41: * Returns <code>true</code> if this task is finished and should never be
42: * executed again.
43: * @return
44: * <code>true</code> if this task is finished and cannot be executed
45: * anymore.
46: */
47: boolean isDone();
48:
49: }
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