1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * 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 package org.apache.logging.log4j.core.appender.db.jpa.converter;
18
19 import javax.persistence.AttributeConverter;
20 import javax.persistence.Converter;
21
22 import org.apache.logging.log4j.message.Message;
23 import org.apache.logging.log4j.status.StatusLogger;
24 import org.apache.logging.log4j.util.Strings;
25
26 /**
27 * A JPA 2.1 attribute converter for {@link Message}s in {@link org.apache.logging.log4j.core.LogEvent}s. This
28 * converter is capable of converting both to and from {@link String}s.
29 */
30 @Converter(autoApply = false)
31 public class MessageAttributeConverter implements AttributeConverter<Message, String> {
32 private static final StatusLogger LOGGER = StatusLogger.getLogger();
33
34 @Override
35 public String convertToDatabaseColumn(final Message message) {
36 if (message == null) {
37 return null;
38 }
39
40 return message.getFormattedMessage();
41 }
42
43 @Override
44 public Message convertToEntityAttribute(final String s) {
45 if (Strings.isEmpty(s)) {
46 return null;
47 }
48
49 return LOGGER.getMessageFactory().newMessage(s);
50 }
51 }