/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* Licensed 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.helpers.AbsoluteTimeDateFormat;
import org.apache.log4j.helpers.DateTimeDateFormat;
import org.apache.log4j.helpers.ISO8601DateFormat;
import org.apache.log4j.helpers.RelativeTimeDateFormat;
import org.apache.log4j.spi.LoggingEvent;
import java.text.DateFormat;
import java.text.FieldPosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/**
This abstract layout takes care of all the date related options and
formatting work.
@author Ceki Gülcü
*/
public abstract class DateLayout extends Layout {
/**
String constant designating no time information. Current value of
this constant is <b>NULL</b>.
*/
public static final String NULL_DATE_FORMAT = "NULL";
/**
String constant designating relative time. Current value of
this constant is <b>RELATIVE</b>.
*/
public static final String RELATIVE_TIME_DATE_FORMAT = "RELATIVE";
/**
@deprecated Options are now handled using the JavaBeans paradigm.
This constant is not longer needed and will be removed in the
<em>near</em> term.
*/
public static final 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
<em>near</em> term.
*/
public static final String TIMEZONE_OPTION = "TimeZone";
protected FieldPosition pos = new FieldPosition(0);
private String timeZoneID;
private String dateFormatOption;
protected DateFormat dateFormat;
protected Date date = new Date();
/**
The value of the <b>DateFormat</b> 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 <b>DateFormat</b> option.
*/
public String getDateFormat() {
return dateFormatOption;
}
/**
The <b>TimeZoneID</b> 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 <b>TimeZone</b> 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.getTimeStamp());
dateFormat.format(date, buf, this.pos);
buf.append(' ');
}
}
/**
Sets the {@link DateFormat} used to format time and date in the
zone determined by <code>timeZone</code>.
*/
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 <code>timeZone</code> parameter. The {@link DateFormat} used
will depend on the <code>dateFormatType</code>.
<p>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
<code>dateFormatType</code> 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);
}
}
}