/*
* 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 org.joda.time.convert;
import org.joda.time.Chronology;
import org.joda.time.PeriodType;
import org.joda.time.ReadWritablePeriod;
import org.joda.time.ReadablePeriod;
/**
* ReadablePeriodConverter extracts milliseconds and chronology from a ReadablePeriod.
*
* @author Stephen Colebourne
* @author Brian S O'Neill
* @since 1.0
*/
class ReadablePeriodConverter extends AbstractConverter
implements PeriodConverter {
/**
* Singleton instance.
*/
static final ReadablePeriodConverter INSTANCE = new ReadablePeriodConverter();
/**
* Restricted constructor.
*/
protected ReadablePeriodConverter() {
super();
}
//-----------------------------------------------------------------------
/**
* Extracts duration values from an object of this converter's type, and
* sets them into the given ReadWritablePeriod.
*
* @param duration duration to get modified
* @param object the object to convert, must not be null
* @param chrono the chronology to use
* @throws NullPointerException if the duration or object is null
* @throws ClassCastException if the object is an invalid type
* @throws IllegalArgumentException if the object is invalid
*/
public void setInto(ReadWritablePeriod duration, Object object, Chronology chrono) {
duration.setPeriod((ReadablePeriod) object);
}
/**
* Selects a suitable period type for the given object.
*
* @param object the object to examine, must not be null
* @return the period type from the readable duration
* @throws NullPointerException if the object is null
* @throws ClassCastException if the object is an invalid type
*/
public PeriodType getPeriodType(Object object) {
ReadablePeriod period = (ReadablePeriod) object;
return period.getPeriodType();
}
//-----------------------------------------------------------------------
/**
* Returns ReadablePeriod class.
*
* @return ReadablePeriod.class
*/
public Class getSupportedType() {
return ReadablePeriod.class;
}
}