is.illuminati.block.spyros.garmin.model.Track.java Source code

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Here is the source code for is.illuminati.block.spyros.garmin.model.Track.java

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/*
 * Copyright 2009 Ilja Booij
 * 
 * This file is part of GarminTrainer.
 * 
 * GarminTrainer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * GarminTrainer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with GarminTrainer.  If not, see <http://www.gnu.org/licenses/>.
 */
package is.illuminati.block.spyros.garmin.model;

import java.io.Serializable;
import java.util.List;

import org.joda.time.DateTime;
import org.joda.time.Duration;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Iterables;

/**
 * a Track is a stretch of a Lap that is recorded without interruption.
 * @author ilja
 */
public class Track implements Serializable {

    private static final long serialVersionUID = 1L;
    private ImmutableList<TrackPoint> trackPoints;

    /**
     * Create a new Track with a list of track points.
     * @param trackPoints trackPoints for the Track
     * @throws NullPointerException if trackPoints is null
     * @throws IllegalArgumentException if trackPoints is empty
     */
    public Track(final List<TrackPoint> trackPoints) {
        Preconditions.checkNotNull(trackPoints);
        Preconditions.checkArgument(!trackPoints.isEmpty());

        this.trackPoints = ImmutableList.copyOf(trackPoints);
    }

    /**
     * Get all track points
     * @return the track points.
     */
    public ImmutableList<TrackPoint> getTrackPoints() {
        return trackPoints;
    }

    /**
     * Get start time of track.
     * @return the start time
     */
    public DateTime getStartTime() {
        return trackPoints.get(0).getTime();
    }

    /** 
     * Get end time of track.
     * @return the end time.
     */
    public DateTime getEndTime() {
        return Iterables.getLast(trackPoints).getTime();
    }

    /**
     * Get duration of track.
     * @return the duration
     */
    public Duration getDuration() {
        return new Duration(getStartTime(), getEndTime());
    }
}