2 * Copyright 2005-2010 the original author or authors.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
16 package org.wamblee.persistence;
18 import java.io.Serializable;
21 * Interface for persistent objects. This defines a generic interface for
22 * accessing primary key and version of entities.
24 public interface Persistent {
26 * Gets the primary key.
28 * @return Primary key.
30 * @see #setPrimaryKey(Serializable)
32 Serializable getPrimaryKey();
35 * Sets the primary key.
40 * @see #getPrimaryKey()
42 void setPrimaryKey(Serializable aKey);
49 * @see #setPersistedVersion(int)
51 Number getPersistedVersion();
59 * @see #getPersistedVersion()
61 void setPersistedVersion(Number aVersion);