| /* |
| * Copyright 2011 Marc Grue. |
| * |
| * 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.zest.sample.dcicargo.sample_a.data.shipping.itinerary; |
| |
| import java.util.Date; |
| import java.util.List; |
| import org.joda.time.Days; |
| import org.joda.time.LocalDate; |
| import org.apache.zest.api.mixin.Mixins; |
| import org.apache.zest.api.property.Property; |
| import org.apache.zest.library.constraints.annotation.NotEmpty; |
| |
| /** |
| * An itinerary is a description of a planned route for a cargo. |
| * |
| * The itinerary has a list of Legs each describing expected |
| * loading onto/ unloading from voyages at different locations. |
| * |
| * List of legs is mandatory and immutable. |
| */ |
| @Mixins( Itinerary.Mixin.class ) |
| public interface Itinerary |
| { |
| @NotEmpty |
| Property<List<Leg>> legs(); |
| |
| // Side-effects free and UI agnostic convenience methods |
| Leg firstLeg(); |
| |
| Leg lastLeg(); |
| |
| Date finalArrivalDate(); |
| |
| int days(); |
| |
| public abstract class Mixin |
| implements Itinerary |
| { |
| public Leg firstLeg() |
| { |
| if( legs().get().isEmpty() ) |
| { |
| return null; |
| } |
| |
| return legs().get().get( 0 ); |
| } |
| |
| public Leg lastLeg() |
| { |
| if( legs().get().isEmpty() ) |
| { |
| return null; |
| } |
| |
| return legs().get().get( legs().get().size() - 1 ); |
| } |
| |
| public Date finalArrivalDate() |
| { |
| if( lastLeg() == null ) |
| { |
| return new Date( new Date( Long.MAX_VALUE ).getTime() ); |
| } |
| |
| return new Date( lastLeg().unloadTime().get().getTime() ); |
| } |
| |
| public int days() |
| { |
| Date dep = firstLeg().loadTime().get(); |
| Date arr = lastLeg().unloadTime().get(); |
| return Days.daysBetween( new LocalDate( dep ), new LocalDate( arr ) ).getDays(); |
| } |
| } |
| } |