01: package org.apache.ojb.otm.lock.isolation;
02:
03: /* Copyright 2003-2005 The Apache Software Foundation
04: *
05: * Licensed under the Apache License, Version 2.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * 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: import org.apache.ojb.otm.core.Transaction;
19: import org.apache.ojb.otm.lock.LockingException;
20: import org.apache.ojb.otm.lock.ObjectLock;
21:
22: public class ReadUncommittedIsolation extends AbstractIsolation {
23:
24: /**
25: * @see org.apache.ojb.otm.lock.TransactionIsolation#lockForRead(Transaction, ObjectLocks)
26: */
27: public void readLock(Transaction tx, ObjectLock lock) {
28: // Read locks are always granted
29: lock.readLock(tx);
30: }
31:
32: /**
33: * @see org.apache.ojb.otm.lock.TransactionIsolation#lockForWrite(Transaction, ObjectLocks)
34: */
35: public void writeLock(Transaction tx, ObjectLock lock)
36: throws LockingException {
37: // WriteLock will wait for an existing write lock to be released before it locks
38: // it for this transaction
39: lock.writeLock(tx);
40: }
41:
42: }
|