01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.lenya.cms.repository;
19:
20: /**
21: * An object which can be persisted to a node.
22: */
23: public interface Persistable {
24:
25: /**
26: * Save the content of the persistable object to the node. This method is called by the node
27: * before the session is committed.
28: * @throws RepositoryException if the object couldn't be saved.
29: */
30: void save() throws RepositoryException;
31:
32: /**
33: * @return if the persistable object has been modified, i.e. if it needs to be saved.
34: */
35: boolean isModified();
36:
37: }
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