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/*
 *  Copyright 2001-2005 Stephen Colebourne
 *
 *  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 com.facebook.presto.jdbc.internal.joda.time.convert;

import com.facebook.presto.jdbc.internal.joda.time.Chronology;
import com.facebook.presto.jdbc.internal.joda.time.DateTimeZone;

/**
 * InstantConverter defines how an object is converted to milliseconds/chronology.
 * 

* The two methods in this interface must be called in order, as the * getInstantMillis method relies on the result of the * getChronology method being passed in. * * @author Stephen Colebourne * @since 1.0 */ public interface InstantConverter extends Converter { /** * Extracts the chronology from an object of this converter's type * where the time zone is specified. * * @param object the object to convert * @param zone the specified zone to use, null means default zone * @return the chronology, never null * @throws ClassCastException if the object is invalid */ Chronology getChronology(Object object, DateTimeZone zone); /** * Extracts the chronology from an object of this converter's type * where the chronology may be specified. *

* If the chronology is non-null it should be used. If it is null, then the * object should be queried, and if it has no chronology then ISO default is used. * * @param object the object to convert * @param chrono the chronology to use, null means use object * @return the chronology, never null * @throws ClassCastException if the object is invalid */ Chronology getChronology(Object object, Chronology chrono); //----------------------------------------------------------------------- /** * Extracts the millis from an object of this converter's type. *

* The chronology passed in is the result of the call to getChronology. * * @param object the object to convert * @param chrono the chronology to use, which is the non-null result of getChronology() * @return the millisecond instant * @throws ClassCastException if the object is invalid * @throws IllegalArgumentException if object conversion fails */ long getInstantMillis(Object object, Chronology chrono); }





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