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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.commons.lang3.time;

import java.text.FieldPosition;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 * DatePrinter is the "missing" interface for the format methods of
 * {@link java.text.DateFormat}. You can obtain an object implementing this
 * interface by using one of the FastDateFormat factory methods.
 * 

* Warning: Since binary compatible methods may be added to this interface in any * release, developers are not expected to implement this interface. * * @since 3.2 */ public interface DatePrinter { /** *

Formats a millisecond {@code long} value.

* * @param millis the millisecond value to format * @return the formatted string * @since 2.1 */ String format(long millis); /** *

Formats a {@code Date} object using a {@code GregorianCalendar}.

* * @param date the date to format * @return the formatted string */ String format(Date date); /** *

Formats a {@code Calendar} object.

* The TimeZone set on the Calendar is only used to adjust the time offset. * The TimeZone specified during the construction of the Parser will determine the TimeZone * used in the formatted string. * * @param calendar the calendar to format. * @return the formatted string */ String format(Calendar calendar); /** *

Formats a millisecond {@code long} value into the * supplied {@code StringBuffer}.

* * @param millis the millisecond value to format * @param buf the buffer to format into * @return the specified string buffer * @deprecated Use {{@link #format(long, Appendable)}. */ @Deprecated StringBuffer format(long millis, StringBuffer buf); /** *

Formats a {@code Date} object into the * supplied {@code StringBuffer} using a {@code GregorianCalendar}.

* * @param date the date to format * @param buf the buffer to format into * @return the specified string buffer * @deprecated Use {{@link #format(Date, Appendable)}. */ @Deprecated StringBuffer format(Date date, StringBuffer buf); /** *

Formats a {@code Calendar} object into the supplied {@code StringBuffer}.

* The TimeZone set on the Calendar is only used to adjust the time offset. * The TimeZone specified during the construction of the Parser will determine the TimeZone * used in the formatted string. * * @param calendar the calendar to format * @param buf the buffer to format into * @return the specified string buffer * @deprecated Use {{@link #format(Calendar, Appendable)}. */ @Deprecated StringBuffer format(Calendar calendar, StringBuffer buf); /** *

Formats a millisecond {@code long} value into the * supplied {@code Appendable}.

* * @param millis the millisecond value to format * @param buf the buffer to format into * @param the Appendable class type, usually StringBuilder or StringBuffer. * @return the specified string buffer * @since 3.5 */ B format(long millis, B buf); /** *

Formats a {@code Date} object into the * supplied {@code Appendable} using a {@code GregorianCalendar}.

* * @param date the date to format * @param buf the buffer to format into * @param the Appendable class type, usually StringBuilder or StringBuffer. * @return the specified string buffer * @since 3.5 */ B format(Date date, B buf); /** *

Formats a {@code Calendar} object into the supplied {@code Appendable}.

* The TimeZone set on the Calendar is only used to adjust the time offset. * The TimeZone specified during the construction of the Parser will determine the TimeZone * used in the formatted string. * * @param calendar the calendar to format * @param buf the buffer to format into * @param the Appendable class type, usually StringBuilder or StringBuffer. * @return the specified string buffer * @since 3.5 */ B format(Calendar calendar, B buf); // Accessors //----------------------------------------------------------------------- /** *

Gets the pattern used by this printer.

* * @return the pattern, {@link java.text.SimpleDateFormat} compatible */ String getPattern(); /** *

Gets the time zone used by this printer.

* *

This zone is always used for {@code Date} printing.

* * @return the time zone */ TimeZone getTimeZone(); /** *

Gets the locale used by this printer.

* * @return the locale */ Locale getLocale(); /** *

Formats a {@code Date}, {@code Calendar} or * {@code Long} (milliseconds) object.

* * @param obj the object to format * @param toAppendTo the buffer to append to * @param pos the position - ignored * @return the buffer passed in * @see java.text.DateFormat#format(Object, StringBuffer, FieldPosition) */ StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos); }