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: import serp.util.Numbers;
22:
23: /**
24: * {@link OpenJPAId} subclass appropriate for long fields.
25: *
26: * @author Steve Kim
27: */
28: public final class LongId extends OpenJPAId {
29:
30: private final long key;
31:
32: public LongId(Class cls, Long key) {
33: this (cls, (key == null) ? 0L : key.longValue());
34: }
35:
36: public LongId(Class cls, String key) {
37: this (cls, (key == null) ? 0L : Long.parseLong(key));
38: }
39:
40: public LongId(Class cls, long key) {
41: super (cls);
42: this .key = key;
43: }
44:
45: public LongId(Class cls, long key, boolean subs) {
46: super (cls, subs);
47: this .key = key;
48: }
49:
50: public long getId() {
51: return key;
52: }
53:
54: public Object getIdObject() {
55: return Numbers.valueOf(key);
56: }
57:
58: protected int idHash() {
59: return (int) (key ^ (key >>> 32));
60: }
61:
62: protected boolean idEquals(OpenJPAId o) {
63: return key == ((LongId) o).key;
64: }
65: }
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