private Realm(SharedRealmHandle sharedRealmHandle, RealmConfiguration config)
{
SharedRealmHandle = sharedRealmHandle;
Config = config;
// update OUR config version number in case loaded one from disk
Config.SchemaVersion = NativeSharedRealm.get_schema_version(sharedRealmHandle);
Metadata = (config.ObjectClasses ?? RealmObjectClasses).ToDictionary(t => t, CreateRealmObjectMetadata);
}
/// <summary>
/// Use to save the changes to the realm. If transaction is declared in a <c>using</c> block, must be used before the end of that block.
/// </summary>
public void Commit()
{
if (!_isOpen)
{
throw new Exception("Transaction was already closed. Cannot commit");
}
NativeSharedRealm.commit_transaction(_sharedRealmHandle);
_isOpen = false;
}
/// <summary>
/// Use explicitly to undo the changes in a transaction, otherwise it is automatically invoked by exiting the block.
/// </summary>
public void Rollback()
{
if (!_isOpen)
{
throw new Exception("Transaction was already closed. Cannot roll back");
}
NativeSharedRealm.cancel_transaction(_sharedRealmHandle);
_isOpen = false;
}
private TableHandle GetTable(Type realmType)
{
var result = new TableHandle();
var tableName = "class_" + realmType.Name;
RuntimeHelpers.PrepareConstrainedRegions();
try { /* Retain handle in a constrained execution region */ }
finally
{
var tablePtr = NativeSharedRealm.get_table(SharedRealmHandle, tableName, (IntPtr)tableName.Length);
result.SetHandle(tablePtr);
}
return(result);
}
/// <summary>
/// Update a Realm and outstanding objects to point to the most recent data for this Realm.
/// This is only necessary when you have a Realm on a non-runloop thread that needs manual refreshing.
/// </summary>
/// <returns>
/// Whether the realm had any updates. Note that this may return true even if no data has actually changed.
/// </returns>
public bool Refresh()
{
return(MarshalHelpers.IntPtrToBool(NativeSharedRealm.refresh(SharedRealmHandle)));
}
/// <summary>
/// Determines whether this instance is the same core instance as the specified rhs.
/// </summary>
/// <remarks>
/// You can, and should, have multiple instances open on different threads which have the same path and open the same Realm.
/// </remarks>
/// <returns><c>true</c> if this instance is the same core instance the specified rhs; otherwise, <c>false</c>.</returns>
/// <param name="rhs">The Realm to compare with the current Realm.</param>
public bool IsSameInstance(Realm rhs)
{
return(MarshalHelpers.IntPtrToBool(NativeSharedRealm.is_same_instance(SharedRealmHandle, rhs.SharedRealmHandle)));
}
public static Realm GetInstance(RealmConfiguration config = null)
{
config = config ?? RealmConfiguration.DefaultConfiguration;
// TODO cache these initializers but note complications with ObjectClasses
var schemaInitializer = new SchemaInitializerHandle();
if (config.ObjectClasses == null)
{
foreach (var realmObjectClass in RealmObjectClasses)
{
var objectSchemaHandle = GenerateObjectSchema(realmObjectClass);
NativeSchema.initializer_add_object_schema(schemaInitializer, objectSchemaHandle);
}
}
else
{
foreach (var selectedRealmObjectClass in config.ObjectClasses)
{
if (selectedRealmObjectClass.BaseType != typeof(RealmObject))
{
throw new ArgumentException($"The class {selectedRealmObjectClass.FullName} must descend directly from RealmObject");
}
Debug.Assert(RealmObjectClasses.Contains(selectedRealmObjectClass)); // user-specified class must have been picked up by our static ctor
var objectSchemaHandle = GenerateObjectSchema(selectedRealmObjectClass);
NativeSchema.initializer_add_object_schema(schemaInitializer, objectSchemaHandle);
}
}
var schemaHandle = new SchemaHandle(schemaInitializer);
var srHandle = new SharedRealmHandle();
var readOnly = MarshalHelpers.BoolToIntPtr(config.ReadOnly);
var durability = MarshalHelpers.BoolToIntPtr(false);
var databasePath = config.DatabasePath;
IntPtr srPtr = IntPtr.Zero;
try {
srPtr = NativeSharedRealm.open(schemaHandle,
databasePath, (IntPtr)databasePath.Length,
readOnly, durability,
config.EncryptionKey,
config.SchemaVersion);
} catch (RealmMigrationNeededException) {
if (config.ShouldDeleteIfMigrationNeeded)
{
DeleteRealm(config);
}
else
{
throw; // rethrow te exception
//TODO when have Migration but also consider programmer control over auto migration
//MigrateRealm(configuration);
}
// create after deleting old reopen after migrating
srPtr = NativeSharedRealm.open(schemaHandle,
databasePath, (IntPtr)databasePath.Length,
readOnly, durability,
config.EncryptionKey,
config.SchemaVersion);
}
RuntimeHelpers.PrepareConstrainedRegions();
try { /* Retain handle in a constrained execution region */ }
finally
{
srHandle.SetHandle(srPtr);
}
return(new Realm(srHandle, config));
}
internal Transaction(SharedRealmHandle sharedRealmHandle)
{
this._sharedRealmHandle = sharedRealmHandle;
NativeSharedRealm.begin_transaction(sharedRealmHandle);
_isOpen = true;
}
