01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. The ASF licenses this file to You
04: * under the Apache License, Version 2.0 (the "License"); you may not
05: * 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. For additional information regarding
15: * copyright in this work, please see the NOTICE file in the top level
16: * directory of this distribution.
17: */
18:
19: package org.apache.roller.pojos;
20:
21: import java.io.Serializable;
22: import org.apache.commons.lang.builder.EqualsBuilder;
23: import org.apache.commons.lang.builder.ToStringBuilder;
24: import org.apache.commons.lang.builder.ToStringStyle;
25: import org.apache.roller.RollerException;
26:
27: /**
28: * Base class for all of Roller's persistent objects.
29: */
30: public abstract class PersistentObject implements Serializable {
31:
32: /**
33: * All persistent objects require an identifier.
34: */
35: public abstract String getId();
36:
37: public abstract void setId(String id);
38:
39: /**
40: * Load data based on data from another object.
41: */
42: public abstract void setData(PersistentObject obj);
43:
44: public boolean equals(Object o) {
45: return EqualsBuilder.reflectionEquals(this , o);
46: }
47:
48: // TODO: how efficient is this?
49: public String toString() {
50: try {
51: // this may throw an exception if called by a thread that
52: return ToStringBuilder.reflectionToString(this ,
53: ToStringStyle.MULTI_LINE_STYLE);
54: } catch (Throwable e) {
55: // alternative toString() implementation used in case of exception
56: return getClass().getName() + ":" + getId();
57: }
58: }
59:
60: }
|