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 */ 017package org.apache.logging.log4j.core.appender.db.jpa.converter; 018 019import javax.persistence.AttributeConverter; 020import javax.persistence.Converter; 021 022import org.apache.logging.log4j.Marker; 023import org.apache.logging.log4j.MarkerManager; 024import org.apache.logging.log4j.core.helpers.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) 031public class MarkerAttributeConverter implements AttributeConverter<Marker, String> { 032 @Override 033 public String convertToDatabaseColumn(final Marker marker) { 034 if (marker == null) { 035 return null; 036 } 037 038 final StringBuilder builder = new StringBuilder(marker.getName()); 039 Marker parent = marker.getParent(); 040 int levels = 0; 041 boolean hasParent = false; 042 while (parent != null) { 043 levels++; 044 hasParent = true; 045 builder.append("[ ").append(parent.getName()); 046 parent = parent.getParent(); 047 } 048 for (int i = 0; i < levels; i++) { 049 builder.append(" ]"); 050 } 051 if (hasParent) { 052 builder.append(" ]"); 053 } 054 return builder.toString(); 055 } 056 057 @Override 058 public Marker convertToEntityAttribute(final String s) { 059 if (Strings.isEmpty(s)) { 060 return null; 061 } 062 063 final int bracket = s.indexOf("["); 064 065 return bracket < 1 ? MarkerManager.getMarker(s) : MarkerManager.getMarker(s.substring(0, bracket)); 066 } 067}