01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * published by the Free Software Foundation; either version 2.1 of
10: * the License, or (at your option) any later version.
11: *
12: * This software is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this software; if not, write to the Free
19: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21: */
22: package org.jboss.monitor;
23:
24: import java.util.Collection;
25: import javax.management.JMException;
26: import org.jboss.monitor.client.BeanCacheSnapshot;
27:
28: /**
29: * The JMX management interface for the {@link BeanCacheMonitor} MBean.
30: *
31: * @see Monitorable
32: * @author <a href="mailto:simone.bordet@compaq.com">Simone Bordet</a>
33: * @version $Revision: 57209 $
34: */
35: public interface BeanCacheMonitorMBean {
36: /**
37: * Returns the cache data at the call instant.
38: * @return null if a problem is encountered while sampling the cache,
39: *
40: * otherwise an array (possibly of size 0) with the cache data.
41: */
42: BeanCacheSnapshot[] getSnapshots();
43:
44: /**
45: * Describe <code>listSnapshots</code> method here.
46: * Returns as a collection, throws JMException on problem
47: *
48: * @return a <code>Collection</code> value
49: */
50: Collection listSnapshots() throws JMException;
51: }
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