/*
* Copyright 1999-2005 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.lf5.util;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
/**
* Date format manager.
* Utility class to help manage consistent date formatting and parsing.
* It may be advantageous to have multiple DateFormatManagers per
* application. For example, one for handling the output (formatting) of
* dates, and another one for handling the input (parsing) of dates.
*
* @author Robert Shaw
* @author Michael J. Sikorsky
*/
// Contributed by ThoughtWorks Inc.
public class DateFormatManager {
//--------------------------------------------------------------------------
// Constants:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Protected Variables:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Private Variables:
//--------------------------------------------------------------------------
private TimeZone _timeZone = null;
private Locale _locale = null;
private String _pattern = null;
private DateFormat _dateFormat = null;
//--------------------------------------------------------------------------
// Constructors:
//--------------------------------------------------------------------------
public DateFormatManager() {
super();
configure();
}
public DateFormatManager(TimeZone timeZone) {
super();
_timeZone = timeZone;
configure();
}
public DateFormatManager(Locale locale) {
super();
_locale = locale;
configure();
}
public DateFormatManager(String pattern) {
super();
_pattern = pattern;
configure();
}
public DateFormatManager(TimeZone timeZone, Locale locale) {
super();
_timeZone = timeZone;
_locale = locale;
configure();
}
public DateFormatManager(TimeZone timeZone, String pattern) {
super();
_timeZone = timeZone;
_pattern = pattern;
configure();
}
public DateFormatManager(Locale locale, String pattern) {
super();
_locale = locale;
_pattern = pattern;
configure();
}
public DateFormatManager(TimeZone timeZone, Locale locale, String pattern) {
super();
_timeZone = timeZone;
_locale = locale;
_pattern = pattern;
configure();
}
//--------------------------------------------------------------------------
// Public Methods:
//--------------------------------------------------------------------------
public synchronized TimeZone getTimeZone() {
if (_timeZone == null) {
return TimeZone.getDefault();
} else {
return _timeZone;
}
}
public synchronized void setTimeZone(TimeZone timeZone) {
_timeZone = timeZone;
configure();
}
public synchronized Locale getLocale() {
if (_locale == null) {
return Locale.getDefault();
} else {
return _locale;
}
}
public synchronized void setLocale(Locale locale) {
_locale = locale;
configure();
}
public synchronized String getPattern() {
return _pattern;
}
/**
* Set the pattern. i.e. "EEEEE, MMMMM d, yyyy hh:mm aaa"
*/
public synchronized void setPattern(String pattern) {
_pattern = pattern;
configure();
}
/**
* This method has been deprecated in favour of getPattern().
* @deprecated Use getPattern().
*/
public synchronized String getOutputFormat() {
return _pattern;
}
/**
* This method has been deprecated in favour of setPattern().
* @deprecated Use setPattern().
*/
public synchronized void setOutputFormat(String pattern) {
_pattern = pattern;
configure();
}
public synchronized DateFormat getDateFormatInstance() {
return _dateFormat;
}
public synchronized void setDateFormatInstance(DateFormat dateFormat) {
_dateFormat = dateFormat;
// No reconfiguration necessary!
}
public String format(Date date) {
return getDateFormatInstance().format(date);
}
public String format(Date date, String pattern) {
DateFormat formatter = null;
formatter = getDateFormatInstance();
if (formatter instanceof SimpleDateFormat) {
formatter = (SimpleDateFormat) (formatter.clone());
((SimpleDateFormat) formatter).applyPattern(pattern);
}
return formatter.format(date);
}
/**
* @throws java.text.ParseException
*/
public Date parse(String date) throws ParseException {
return getDateFormatInstance().parse(date);
}
/**
* @throws java.text.ParseException
*/
public Date parse(String date, String pattern) throws ParseException {
DateFormat formatter = null;
formatter = getDateFormatInstance();
if (formatter instanceof SimpleDateFormat) {
formatter = (SimpleDateFormat) (formatter.clone());
((SimpleDateFormat) formatter).applyPattern(pattern);
}
return formatter.parse(date);
}
//--------------------------------------------------------------------------
// Protected Methods:
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Private Methods:
//--------------------------------------------------------------------------
private synchronized void configure() {
_dateFormat = SimpleDateFormat.getDateTimeInstance(DateFormat.FULL,
DateFormat.FULL,
getLocale());
_dateFormat.setTimeZone(getTimeZone());
if (_pattern != null) {
((SimpleDateFormat) _dateFormat).applyPattern(_pattern);
}
}
//--------------------------------------------------------------------------
// Nested Top-Level Classes or Interfaces:
//--------------------------------------------------------------------------
}