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.persistence;
20:
21: import org.apache.openjpa.kernel.ConnectionRetainModes;
22:
23: /**
24: * The possible values for use when configuring the connection retain
25: * behavior for an {@link OpenJPAEntityManager}.
26: *
27: * @since 1.0.0
28: * @published
29: */
30: public enum ConnectionRetainMode {
31: ON_DEMAND(ConnectionRetainModes.CONN_RETAIN_DEMAND), TRANSACTION(
32: ConnectionRetainModes.CONN_RETAIN_TRANS), ALWAYS(
33: ConnectionRetainModes.CONN_RETAIN_ALWAYS);
34:
35: private final int connectionRetainConstant;
36:
37: private ConnectionRetainMode(int value) {
38: connectionRetainConstant = value;
39: }
40:
41: int toKernelConstant() {
42: return connectionRetainConstant;
43: }
44:
45: static ConnectionRetainMode fromKernelConstant(int kernelConstant) {
46: switch (kernelConstant) {
47: case ConnectionRetainModes.CONN_RETAIN_DEMAND:
48: return ON_DEMAND;
49:
50: case ConnectionRetainModes.CONN_RETAIN_ALWAYS:
51: return ALWAYS;
52:
53: case ConnectionRetainModes.CONN_RETAIN_TRANS:
54: return TRANSACTION;
55:
56: default:
57: throw new IllegalArgumentException(kernelConstant + "");
58: }
59: }
60: }
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