org.apache.log4j.helpers.DateLayout Maven / Gradle / Ivy
/*
* 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);
}
}
}