Statistics requires startTime and stopTime.

This is now enforced for import as wells.

src/main/java/de/dennisguse/opentracks/data/ContentProviderUtils.java

@@ -120,14 +120,14 @@ public class ContentProviderUtils {
         int altitudeLossIndex = cursor.getColumnIndexOrThrow(TracksColumns.ALTITUDE_LOSS);
 
         Statistics trackStatistics = new Statistics(
-                cursor.isNull(startTimeIndex) ? null : Instant.ofEpochMilli(cursor.getLong(startTimeIndex)),
-                cursor.isNull(stopTimeIndex) ? null : Instant.ofEpochMilli(cursor.getLong(stopTimeIndex)),
-                cursor.isNull(totalTimeIndex) ? null : Duration.ofMillis(cursor.getLong(totalTimeIndex)),
-                cursor.isNull(movingTimeIndex) ? null : Duration.ofMillis(cursor.getLong(movingTimeIndex)),
+                Instant.ofEpochMilli(cursor.getLong(startTimeIndex)),
+                Instant.ofEpochMilli(cursor.getLong(stopTimeIndex)),
+                Duration.ofMillis(cursor.getLong(totalTimeIndex)),
+                Duration.ofMillis(cursor.getLong(movingTimeIndex)),
 
-                cursor.isNull(totalDistanceIndex) ? null : Distance.of(cursor.getFloat(totalDistanceIndex)),
+                Distance.of(cursor.getFloat(totalDistanceIndex)),
 
-                cursor.isNull(maxSpeedIndex) ? null : Speed.of(cursor.getFloat(maxSpeedIndex)),
+                Speed.of(cursor.getFloat(maxSpeedIndex)),
                 cursor.isNull(minAltitudeIndex) || cursor.isNull(maxAltitudeIndex) ? null : new AltitudeExtremities(cursor.getFloat(minAltitudeIndex), cursor.getFloat(maxAltitudeIndex)),
                 cursor.isNull(altitudeGainIndex) || cursor.isNull(altitudeLossIndex) ? null : new AltitudeGainLoss(cursor.getFloat(altitudeGainIndex), cursor.getFloat(altitudeLossIndex)),
 
@@ -136,12 +136,8 @@ public class ContentProviderUtils {
         );
 
         Track track = new Track(ZoneOffset.ofTotalSeconds(cursor.getInt(startTimeOffsetIndex)), trackStatistics);
-        if (!cursor.isNull(idIndex)) {
-            track.setId(new Track.Id(cursor.getLong(idIndex)));
-        }
-        if (!cursor.isNull(uuidIndex)) {
-            track.setUuid(UUIDUtils.fromBytes(cursor.getBlob(uuidIndex)));
-        }
+        track.setId(new Track.Id(cursor.getLong(idIndex)));
+        track.setUuid(UUIDUtils.fromBytes(cursor.getBlob(uuidIndex)));
         if (!cursor.isNull(nameIndex)) {
             track.setName(cursor.getString(nameIndex));
         }
@@ -310,12 +306,8 @@ public class ContentProviderUtils {
 
     private ContentValues createContentValues(Statistics trackStatistics) {
         ContentValues values = new ContentValues();
-        if (trackStatistics.startTime() != null) {
-            values.put(TracksColumns.STARTTIME, trackStatistics.startTime().toEpochMilli());
-        }
-        if (trackStatistics.stopTime() != null) {
-            values.put(TracksColumns.STOPTIME, trackStatistics.stopTime().toEpochMilli());
-        }
+        values.put(TracksColumns.STARTTIME, trackStatistics.startTime().toEpochMilli());
+        values.put(TracksColumns.STOPTIME, trackStatistics.stopTime().toEpochMilli());
         values.put(TracksColumns.TOTALDISTANCE, trackStatistics.totalDistance().toM());
         values.put(TracksColumns.TOTALTIME, trackStatistics.totalDuration().toMillis());
         values.put(TracksColumns.MOVINGTIME, trackStatistics.movingDuration().toMillis());

src/main/java/de/dennisguse/opentracks/data/models/Statistics.java

@@ -40,8 +40,8 @@ public record Statistics(
     @Deprecated
     public static final Statistics DEFAULT =
         new Statistics(
-                null,
-                null,
+                Instant.EPOCH,
+                Instant.EPOCH,
                 Duration.ZERO,
                 Duration.ZERO,
                 Distance.ZERO,
@@ -122,8 +122,8 @@ public record Statistics(
         }
 
         return new Statistics(
-                startTime == null ? other.startTime : startTime.isBefore(other.startTime) ? startTime : other.startTime,
-                stopTime == null ? other.stopTime : stopTime.isAfter(other.stopTime) ? stopTime : other.stopTime,
+                startTime.isBefore(other.startTime) ? startTime : other.startTime,
+                stopTime.isAfter(other.stopTime) ? stopTime : other.stopTime,
                 totalDuration.plus(other.totalDuration),
                 movingDuration.plus(other.movingDuration),
                 totalDistance.plus(other.totalDistance),

src/main/java/de/dennisguse/opentracks/data/models/Track.java

@@ -55,12 +55,6 @@ public class Track {
     @NonNull
     private Statistics trackStatistics;
 
-    @Deprecated
-    @VisibleForTesting
-    public Track() {
-        this(ZoneOffset.UTC);
-    }
-
     @VisibleForTesting
     public Track(Statistics statistics) {
         this(ZoneOffset.UTC, statistics);

src/main/java/de/dennisguse/opentracks/io/file/TrackFilenameGenerator.java

@@ -3,6 +3,7 @@ package de.dennisguse.opentracks.io.file;
 import androidx.annotation.NonNull;
 
 import java.time.Instant;
+import java.time.ZoneOffset;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -89,7 +90,7 @@ public class TrackFilenameGenerator {
     }
 
     public String getExample() {
-        Track track = new Track(new Statistics(Instant.EPOCH, null, null, null, null, null, null, null, null, null));
+        Track track = new Track(ZoneOffset.UTC, Statistics.DEFAULT);
         track.setName("Berlin");
         track.setUuid(UUID.fromString("f81d4fae-7dec-11d0-a765-00a0c91e6bf6"));