    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements. See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache license, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License. You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the license for the specific language governing permissions and
    015     * limitations under the license.
    016     */
    017    package org.apache.logging.log4j.core.appender.db.jpa.converter;
    018
    019    import javax.persistence.AttributeConverter;
    020    import javax.persistence.Converter;
    021
    022    import org.apache.logging.log4j.Marker;
    023    import org.apache.logging.log4j.MarkerManager;
    024    import org.apache.logging.log4j.util.Strings;
    025
    026    /**
    027     * A JPA 2.1 attribute converter for {@link Marker}s in {@link org.apache.logging.log4j.core.LogEvent}s. This
    028     * converter is capable of converting both to and from {@link String}s.
    029     */
    030    @Converter(autoApply = false)
    031    public class MarkerAttributeConverter implements AttributeConverter<Marker, String> {
    032        @Override
    033        public String convertToDatabaseColumn(final Marker marker) {
    034            if (marker == null) {
    035                return null;
    036            }
    037            return marker.toString();
    038        }
    039
    040        @Override
    041        public Marker convertToEntityAttribute(final String s) {
    042            if (Strings.isEmpty(s)) {
    043                return null;
    044            }
    045
    046            final int bracket = s.indexOf("[");
    047
    048            return bracket < 1 ? MarkerManager.getMarker(s) : MarkerManager.getMarker(s.substring(0, bracket));
    049        }
    050    }