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.transaction;
19:
20: import org.apache.lenya.util.Assert;
21:
22: /**
23: * Exception which is thrown when a different identity changed a transactionable
24: * object in an optimistic offline lock scenario.
25: */
26: public class ConcurrentModificationException extends
27: TransactionException {
28:
29: private Transactionable transactionable;
30:
31: public ConcurrentModificationException(Transactionable t) {
32: super ();
33: Assert.notNull("transactionable", t);
34: this .transactionable = t;
35: }
36:
37: public String getMessage() {
38: return "The object [" + this .transactionable
39: + "] was modified after it has been locked.";
40: }
41:
42: /**
43: * @return The transactionable that was modified by a different identity.
44: */
45: public Transactionable getTransactionable() {
46: return this.transactionable;
47: }
48:
49: }
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