01: /*
02: * Copyright 2004-2006 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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.compass.gps.device.hibernate.scrollable.snapshot;
18:
19: import org.compass.gps.device.hibernate.HibernateGpsDeviceException;
20:
21: /**
22: * A RAM (memory) based snapshot persister. The persister will store the data in
23: * memory for the whole device lifecycle (start to stop).
24: *
25: * @author kimchy
26: */
27: public class RAMHibernateSnapshotPersister implements
28: HibernateSnapshotPersister {
29:
30: private HibernateSnapshot hibernateSnapshot = new HibernateSnapshot();
31:
32: /**
33: * Loads the snapshot from memory.
34: */
35: public HibernateSnapshot load() throws HibernateGpsDeviceException {
36: return hibernateSnapshot;
37: }
38:
39: /**
40: * Saves the snapshot to memory.
41: */
42: public void save(HibernateSnapshot snapshot)
43: throws HibernateGpsDeviceException {
44: hibernateSnapshot = snapshot;
45: }
46: }
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