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.pattern; 018 019 import org.apache.logging.log4j.core.config.plugins.Plugin; 020 021 import java.util.Date; 022 023 024 /** 025 * Formats an integer. 026 */ 027 @Plugin(name = "IntegerPatternConverter", type = "FileConverter") 028 @ConverterKeys({"i", "index" }) 029 public final class IntegerPatternConverter extends AbstractPatternConverter implements ArrayPatternConverter { 030 /** 031 * Singleton. 032 */ 033 private static final IntegerPatternConverter INSTANCE = 034 new IntegerPatternConverter(); 035 036 /** 037 * Private constructor. 038 */ 039 private IntegerPatternConverter() { 040 super("Integer", "integer"); 041 } 042 043 /** 044 * Obtains an instance of pattern converter. 045 * 046 * @param options options, may be null. 047 * @return instance of pattern converter. 048 */ 049 public static IntegerPatternConverter newInstance( 050 final String[] options) { 051 return INSTANCE; 052 } 053 054 public void format(final StringBuilder toAppendTo, Object... objects) { 055 for (Object obj : objects) { 056 if (obj instanceof Integer) { 057 format(obj, toAppendTo); 058 break; 059 } 060 } 061 } 062 063 /** 064 * {@inheritDoc} 065 */ 066 public void format(Object obj, final StringBuilder toAppendTo) { 067 if (obj instanceof Integer) { 068 toAppendTo.append(obj.toString()); 069 } 070 071 if (obj instanceof Date) { 072 toAppendTo.append(Long.toString(((Date) obj).getTime())); 073 } 074 } 075 }