GeoPackageGeometryData fromBytes Unknown magic value

[AndriusRimk]

Please fill out as much known and relevant information as possible. I am currently exploring how can I convert data from GeoJson formats to WKB and then store it but getting Magic value errors. From debugging it seems there is no place Converter would create magic value using POINT type.

Version Information:

• SF WKB Java Version: 2.0.2
• SF WKB Java Source: (e.g. Central Repository, Release, Source Code Build) Maven/Gradle
• IDE Name & Version:
• Maven Version: (mvn -version)
• Java Version: (java -version)
• Platform & OS:
• Other Relevant Libraries: api "mil.nga.geopackage:geopackage-android:3.4.0" api "mil.nga.geopackage.map:geopackage-android-map:3.4.0" api "mil.nga.sf:sf-geojson:2.0.3" api "mil.nga:sf:2.0.2"

Expected Results:

• Create GeoJson Geometry object from string.
• GeoJson Geometry to Geometry
• Geometry to WKB
• Geometry to GeoPackageGeometrydata
• Save data to FeatureRow using GEOMETRY type

Observed Results:

• While constructing : GeoPackageGeometrydata(WKB(GEOMETRY)) trows expection: mil.nga.geopackage.GeoPackageException: Unexpected GeoPackage Geometry magic number: ����, Expected: GP
• How often does this occur? Alwayse

Output:

• Any logs, errors, or output messages? mil.nga.geopackage.GeoPackageException: Unexpected GeoPackage Geometry magic number: ����, Expected: GP at mil.nga.geopackage.geom.GeoPackageGeometryData.fromBytes(GeoPackageGeometryData.java:111) at mil.nga.geopackage.geom.GeoPackageGeometryData.<init>(GeoPackageGeometryData.java:86) at land.meridia.collect.ngageo.poc.NGAGeo.onMapReady(NGAGeo.kt:150) at com.google.android.gms.maps.zzak.zza(Unknown Source:2) at com.google.android.gms.maps.internal.zzaq.dispatchTransaction(Unknown Source:12) at com.google.android.gms.internal.maps.zzb.onTransact(Unknown Source:12) at android.os.Binder.transact(Binder.java:667) at fv.b(:com.google.android.gms.dynamite_mapsdynamite@16089052@16.0.89 (040700-239467275):14) at com.google.android.gms.maps.internal.bd.a(:com.google.android.gms.dynamite_mapsdynamite@16089052@16.0.89 (040700-239467275):4) at com.google.maps.api.android.lib6.impl.bk.run(:com.google.android.gms.dynamite_mapsdynamite@16089052@16.0.89 (040700-239467275):4) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Steps to Reproduce:

1. Step One
2. Step Two
3. ...

Relevant Code:

val geometryGeoJson: mil.nga.sf.geojson.Geometry = FeatureConverter.toGeometry(geometryString)
        val geometry:Geometry = geometryGeoJson.geometry
        val writer = ByteWriter()
        writer.byteOrder = ByteOrder.BIG_ENDIAN
        GeometryWriter.writeGeometry(writer, geometry)
        val bytes: ByteArray = writer.bytes
        writer.close()
        val geoPackageData = GeoPackageGeometryData(bytes)

Test Files:

• The Geometry string { "type": "Point", "coordinates": [ 102.0, 0.5 ] }

Additional Information:

• Any additional configuration, data, or information that might help with the issue?

[bosborn]

The GeoPackageGeometryData bytes constructor assumes the bytes already have the GeoPackage header bytes. Use the SRS Id constructor and then set the geometry.

Java

// simple-features-geojson-java
String point = "{ \"type\": \"Point\", \"coordinates\": [ 102.0, 0.5 ] }";
Geometry geometry = FeatureConverter.toGeometry(point).getGeometry();

// simple-features-wkb-java
ByteWriter writer = new ByteWriter();
GeometryWriter.writeGeometry(writer, geometry);
byte[] geometryBytes = writer.getBytes();
writer.close();

// geopackage-core-java and (geopackage-java or geopackage-android)
long srsId = geoPackage.getSpatialReferenceSystemDao().getOrCreateFromEpsg(ProjectionConstants.EPSG_WORLD_GEODETIC_SYSTEM).getSrsId();
GeoPackageGeometryData geometryData = new GeoPackageGeometryData(srsId);
geometryData.setGeometry(geometry);
//featureRow.setGeometry(geometryData);
byte[] geometryDataBytes = geometryData.toBytes();

Kotlin

// simple-features-geojson-java
val point = "{ \"type\": \"Point\", \"coordinates\": [ 102.0, 0.5 ] }"
val geometry = FeatureConverter.toGeometry(point).geometry

// simple-features-wkb-java
val writer = ByteWriter()
GeometryWriter.writeGeometry(writer, geometry)
val geometryBytes = writer.bytes
writer.close()

// geopackage-core-java and (geopackage-java or geopackage-android)
val srsId = geoPackage.spatialReferenceSystemDao.getOrCreateFromEpsg(ProjectionConstants.EPSG_WORLD_GEODETIC_SYSTEM.toLong()).srsId
val geometryData = GeoPackageGeometryData(srsId)
geometryData.geometry = geometry
//featureRow.setGeometry(geometryData);
val geometryDataBytes = geometryData.toBytes()

[AndriusRimk]

Thanks for the fast response, it solved my issue.