01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one
03: * or more contributor license agreements. See the NOTICE file
04: * distributed with this work for additional information
05: * regarding copyright ownership. The ASF licenses this file
06: * to you under the Apache License, Version 2.0 (the
07: * "License"); you may not use this file except in compliance
08: * with the License. You may obtain a copy of the License at
09: *
10: * http://www.apache.org/licenses/LICENSE-2.0
11: *
12: * Unless required by applicable law or agreed to in writing,
13: * software distributed under the License is distributed on an
14: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15: * KIND, either express or implied. See the License for the
16: * specific language governing permissions and limitations
17: * under the License.
18: */
19: package org.apache.openjpa.util;
20:
21: /**
22: * {@link OpenJPAId} subclass appropriate for String fields.
23: *
24: * @author Steve Kim
25: */
26: public final class StringId extends OpenJPAId {
27:
28: private final String key;
29:
30: public StringId(Class cls, String key) {
31: super (cls);
32: this .key = (key == null) ? "" : key;
33: }
34:
35: public StringId(Class cls, String key, boolean subs) {
36: super (cls, subs);
37: this .key = (key == null) ? "" : key;
38: }
39:
40: public String getId() {
41: return key;
42: }
43:
44: public Object getIdObject() {
45: return key;
46: }
47:
48: public String toString() {
49: return key;
50: }
51:
52: protected int idHash() {
53: return key.hashCode();
54: }
55:
56: protected boolean idEquals(OpenJPAId o) {
57: return key.equals(((StringId) o).key);
58: }
59: }
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