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/*
 * Copyright 2002-2013 the original author or authors.
 *
 * 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.springframework.format.datetime.joda;

import java.util.TimeZone;

import org.joda.time.Chronology;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormatter;

import org.springframework.context.i18n.LocaleContext;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.context.i18n.TimeZoneAwareLocaleContext;

/**
 * A context that holds user-specific Joda-Time settings such as the user's
 * Chronology (calendar system) and time zone.
 *
 * 

A {@code null} property value indicate the user has not specified a setting. * * @author Keith Donald * @since 3.0 * @see JodaTimeContextHolder */ public class JodaTimeContext { private Chronology chronology; private DateTimeZone timeZone; /** * Set the user's chronology (calendar system). */ public void setChronology(Chronology chronology) { this.chronology = chronology; } /** * Return the user's chronology (calendar system), if any. */ public Chronology getChronology() { return this.chronology; } /** * Set the user's time zone. *

Alternatively, set a {@link TimeZoneAwareLocaleContext} on * {@link LocaleContextHolder}. This context class will fall back to * checking the locale context if no setting has been provided here. * @see org.springframework.context.i18n.LocaleContextHolder#getTimeZone() * @see org.springframework.context.i18n.LocaleContextHolder#setLocaleContext */ public void setTimeZone(DateTimeZone timeZone) { this.timeZone = timeZone; } /** * Return the user's time zone, if any. */ public DateTimeZone getTimeZone() { return this.timeZone; } /** * Get the DateTimeFormatter with the this context's settings * applied to the base {@code formatter}. * @param formatter the base formatter that establishes default * formatting rules, generally context-independent * @return the contextual DateTimeFormatter */ public DateTimeFormatter getFormatter(DateTimeFormatter formatter) { if (this.chronology != null) { formatter = formatter.withChronology(this.chronology); } if (this.timeZone != null) { formatter = formatter.withZone(this.timeZone); } else { LocaleContext localeContext = LocaleContextHolder.getLocaleContext(); if (localeContext instanceof TimeZoneAwareLocaleContext) { TimeZone timeZone = ((TimeZoneAwareLocaleContext) localeContext).getTimeZone(); if (timeZone != null) { formatter = formatter.withZone(DateTimeZone.forTimeZone(timeZone)); } } } return formatter; } }





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