internal static RealmSchema CreateFromObjectStoreSchema(Native.Schema nativeSchema)
{
var objects = new ObjectSchema[nativeSchema.objects_len];
for (var i = 0; i < nativeSchema.objects_len; i++)
{
var objectSchema = Marshal.PtrToStructure <Native.SchemaObject>(IntPtr.Add(nativeSchema.objects, i * Native.SchemaObject.Size));
var builder = new ObjectSchema.Builder(objectSchema.name);
for (var n = objectSchema.properties_start; n < objectSchema.properties_end; n++)
{
var nativeProperty = Marshal.PtrToStructure <Native.SchemaProperty>(IntPtr.Add(nativeSchema.properties, n * Native.SchemaProperty.Size));
builder.Add(new Property
{
Name = nativeProperty.name,
Type = nativeProperty.type,
ObjectType = nativeProperty.object_type,
IsPrimaryKey = nativeProperty.is_primary,
IsNullable = nativeProperty.is_nullable,
IsIndexed = nativeProperty.is_indexed
});
}
objects[i] = builder.Build();
}
return(new RealmSchema(objects));
}
private static void GetNativeSchema(Native.Schema schema, IntPtr managedCallbackPtr)
{
var handle = GCHandle.FromIntPtr(managedCallbackPtr);
var callback = (Action <Native.Schema>)handle.Target;
callback(schema);
handle.Free();
}
private static bool MigrationCallback(IntPtr oldRealmPtr, IntPtr newRealmPtr, Native.Schema oldSchema, ulong schemaVersion, IntPtr managedMigrationHandle)
{
var migrationHandle = GCHandle.FromIntPtr(managedMigrationHandle);
var migration = (Migration)migrationHandle.Target;
// the realms here are owned by Object Store so we should do nothing to clean them up
var oldRealmHandle = new UnownedRealmHandle();
var newRealmHandle = new UnownedRealmHandle();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
}
finally
{
oldRealmHandle.SetHandle(oldRealmPtr);
newRealmHandle.SetHandle(newRealmPtr);
}
var oldConfiguration = new RealmConfiguration(migration._configuration.DatabasePath)
{
SchemaVersion = schemaVersion, IsReadOnly = true
};
var oldRealm = new Realm(oldRealmHandle, oldConfiguration, RealmSchema.CreateFromObjectStoreSchema(oldSchema));
var newRealm = new Realm(newRealmHandle, migration._configuration, migration._schema);
var result = migration.Execute(oldRealm, newRealm);
migrationHandle.Free();
return(result);
}
private static bool MigrationCallback(IntPtr oldRealmPtr, IntPtr newRealmPtr, Native.Schema oldSchema, ulong schemaVersion, IntPtr managedMigrationHandle)
{
var migrationHandle = GCHandle.FromIntPtr(managedMigrationHandle);
var migration = (Migration)migrationHandle.Target;
var oldRealmHandle = new UnownedRealmHandle(oldRealmPtr);
var oldConfiguration = new RealmConfiguration(migration._configuration.DatabasePath)
{
SchemaVersion = schemaVersion, IsReadOnly = true
};
var oldRealm = new Realm(oldRealmHandle, oldConfiguration, RealmSchema.CreateFromObjectStoreSchema(oldSchema));
var newRealmHandle = new UnownedRealmHandle(newRealmPtr);
var newRealm = new Realm(newRealmHandle, migration._configuration, migration._schema);
var result = migration.Execute(oldRealm, newRealm);
migrationHandle.Free();
return(result);
}
