01: package org.apache.ojb.odmg;
02:
03: /* Copyright 2002-2005 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: /**
19: * This interface defines the configurable setting of the ODMG
20: * layer.
21: * @author <a href="mailto:thma@apache.org">Thomas Mahler<a>
22: * @version $Id: OdmgConfiguration.java,v 1.8.2.1 2005/12/21 22:29:21 tomdz Exp $
23: */
24:
25: public interface OdmgConfiguration {
26: /**
27: * If true acquiring a write-lock on a given object x implies write
28: * locks on all objects associated to x.
29: * If false implicit read-locks are acquired.
30: */
31: public boolean lockAssociationAsWrites();
32:
33: /**
34: * This class is used to hold results of OQL queries.
35: * By default a DListImpl is used.
36: */
37: public Class getOqlCollectionClass();
38:
39: /**
40: * defines if implicit lock acquisition is to be used.
41: * If set to true OJB implicitely locks objects to ODMG
42: * transactions after performing OQL queries.
43: * If implicit locking is used locking objects is recursive, that is
44: * associated objects are also locked.
45: * If ImplicitLocking is set to false, no locks are obtained in OQL
46: * queries and there is also no recursive locking.
47: */
48: public boolean useImplicitLocking();
49:
50: }
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