org.apache.log4j.helpers.DateLayout Maven / Gradle / Ivy
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.log4j.helpers;
import org.apache.log4j.Layout;
import org.apache.log4j.spi.LoggingEvent;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import java.text.FieldPosition;
/**
* This abstract layout takes care of all the date related options and formatting work.
*
* @author Ceki Gülcü
*/
abstract public class DateLayout extends Layout {
/**
* String constant designating no time information. Current value of this constant is NULL.
*/
public final static String NULL_DATE_FORMAT = "NULL";
/**
* String constant designating relative time. Current value of this constant is
* RELATIVE.
*/
public final static String RELATIVE_TIME_DATE_FORMAT = "RELATIVE";
protected FieldPosition pos = new FieldPosition(0);
/**
* @deprecated Options are now handled using the JavaBeans paradigm. This constant is not longer needed and will be
* removed in the
* near term.
*/
final static public String DATE_FORMAT_OPTION = "DateFormat";
/**
* @deprecated Options are now handled using the JavaBeans paradigm. This constant is not longer needed and will be
* removed in the
* near term.
*/
final static public String TIMEZONE_OPTION = "TimeZone";
private String timeZoneID;
private String dateFormatOption;
protected DateFormat dateFormat;
protected Date date = new Date();
/**
* @deprecated Use the setter method for the option directly instead of the generic setOption method.
*/
public String[] getOptionStrings() {
return new String[] { DATE_FORMAT_OPTION, TIMEZONE_OPTION };
}
/**
* @deprecated Use the setter method for the option directly instead of the generic setOption method.
*/
public void setOption(String option, String value) {
if (option.equalsIgnoreCase(DATE_FORMAT_OPTION)) {
dateFormatOption = value.toUpperCase();
} else if (option.equalsIgnoreCase(TIMEZONE_OPTION)) {
timeZoneID = value;
}
}
/**
* The value of the DateFormat option should be either an argument to the constructor of
* {@link SimpleDateFormat} or one of the srings "NULL", "RELATIVE", "ABSOLUTE", "DATE" or "ISO8601.
*/
public void setDateFormat(String dateFormat) {
if (dateFormat != null) {
dateFormatOption = dateFormat;
}
setDateFormat(dateFormatOption, TimeZone.getDefault());
}
/**
* Returns value of the DateFormat option.
*/
public String getDateFormat() {
return dateFormatOption;
}
/**
* The TimeZoneID option is a time zone ID string in the format expected by the {@link TimeZone#getTimeZone}
* method.
*/
public void setTimeZone(String timeZone) {
this.timeZoneID = timeZone;
}
/**
* Returns value of the TimeZone option.
*/
public String getTimeZone() {
return timeZoneID;
}
public void activateOptions() {
setDateFormat(dateFormatOption);
if (timeZoneID != null && dateFormat != null) {
dateFormat.setTimeZone(TimeZone.getTimeZone(timeZoneID));
}
}
public void dateFormat(StringBuffer buf, LoggingEvent event) {
if (dateFormat != null) {
date.setTime(event.timeStamp);
dateFormat.format(date, buf, this.pos);
buf.append(' ');
}
}
/**
* Sets the {@link DateFormat} used to format time and date in the zone determined by timeZone.
*/
public void setDateFormat(DateFormat dateFormat, TimeZone timeZone) {
this.dateFormat = dateFormat;
this.dateFormat.setTimeZone(timeZone);
}
/**
* Sets the DateFormat used to format date and time in the time zone determined by timeZone parameter.
* The {@link DateFormat} used will depend on the dateFormatType.
*
*
* The recognized types are {@link #NULL_DATE_FORMAT}, {@link #RELATIVE_TIME_DATE_FORMAT}
* {@link AbsoluteTimeDateFormat#ABS_TIME_DATE_FORMAT}, {@link AbsoluteTimeDateFormat#DATE_AND_TIME_DATE_FORMAT} and
* {@link AbsoluteTimeDateFormat#ISO8601_DATE_FORMAT}. If the
* dateFormatType is not one of the above, then the argument is
* assumed to be a date pattern for {@link SimpleDateFormat}.
*/
public void setDateFormat(String dateFormatType, TimeZone timeZone) {
if (dateFormatType == null) {
this.dateFormat = null;
return;
}
if (dateFormatType.equalsIgnoreCase(NULL_DATE_FORMAT)) {
this.dateFormat = null;
} else if (dateFormatType.equalsIgnoreCase(RELATIVE_TIME_DATE_FORMAT)) {
this.dateFormat = new RelativeTimeDateFormat();
} else if (dateFormatType.equalsIgnoreCase(AbsoluteTimeDateFormat.ABS_TIME_DATE_FORMAT)) {
this.dateFormat = new AbsoluteTimeDateFormat(timeZone);
} else if (dateFormatType.equalsIgnoreCase(AbsoluteTimeDateFormat.DATE_AND_TIME_DATE_FORMAT)) {
this.dateFormat = new DateTimeDateFormat(timeZone);
} else if (dateFormatType.equalsIgnoreCase(AbsoluteTimeDateFormat.ISO8601_DATE_FORMAT)) {
this.dateFormat = new ISO8601DateFormat(timeZone);
} else {
this.dateFormat = new SimpleDateFormat(dateFormatType);
this.dateFormat.setTimeZone(timeZone);
}
}
}