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    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.Marker;
    23  import org.apache.logging.log4j.MarkerManager;
    24  import org.apache.logging.log4j.util.Strings;
    25
    26  /**
    27   * A JPA 2.1 attribute converter for {@link Marker}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 MarkerAttributeConverter implements AttributeConverter<Marker, String> {
    32      @Override
    33      public String convertToDatabaseColumn(final Marker marker) {
    34          if (marker == null) {
    35              return null;
    36          }
    37          return marker.toString();
    38      }
    39
    40      @Override
    41      public Marker convertToEntityAttribute(final String s) {
    42          if (Strings.isEmpty(s)) {
    43              return null;
    44          }
    45
    46          final int bracket = s.indexOf("[");
    47
    48          return bracket < 1 ? MarkerManager.getMarker(s) : MarkerManager.getMarker(s.substring(0, bracket));
    49      }
    50  }