private TableHandle GetTable(Schema.ObjectSchema schema)
{
var result = new TableHandle();
var tableName = schema.Name;
RuntimeHelpers.PrepareConstrainedRegions();
try { /* Retain handle in a constrained execution region */ }
finally
{
var tablePtr = SharedRealmHandle.GetTable(tableName);
result.SetHandle(tablePtr);
}
return(result);
}
private QueryHandle CreateQuery(Schema.ObjectSchema elementType)
{
var tableHandle = _realm.Metadata[elementType.Name].Table;
var queryHandle = tableHandle.TableWhere();
//At this point sh is invalid due to its handle being uninitialized, but the root is set correctly
//a finalize at this point will not leak anything and the handle will not do anything
//now, set the TableView handle...
RuntimeHelpers.PrepareConstrainedRegions();//the following finally will run with no out-of-band exceptions
try { }
finally
{
queryHandle.SetHandle(NativeTable.Where(tableHandle));
}//at this point we have atomically acquired a handle and also set the root correctly so it can be unbound correctly
return(queryHandle);
}
private RealmObject.Metadata CreateRealmObjectMetadata(Schema.ObjectSchema schema)
{
var table = this.GetTable(schema);
Weaving.IRealmObjectHelper helper;
if (schema.Type != null && !Config.Dynamic)
{
var wovenAtt = schema.Type.GetCustomAttribute <WovenAttribute>();
if (wovenAtt == null)
{
throw new RealmException($"Fody not properly installed. {schema.Type.FullName} is a RealmObject but has not been woven.");
}
helper = (Weaving.IRealmObjectHelper)Activator.CreateInstance(wovenAtt.HelperType);
}
else
{
helper = Dynamic.DynamicRealmObjectHelper.Instance;
}
// build up column index in a loop so can spot and cache primary key index on the way
var initColumnMap = new Dictionary <string, IntPtr>();
int initPrimaryKeyIndex = -1;
foreach (var prop in schema)
{
var colIndex = NativeTable.GetColumnIndex(table, prop.Name);
initColumnMap.Add(prop.Name, colIndex);
if (prop.IsPrimaryKey)
{
initPrimaryKeyIndex = (int)colIndex;
}
}
return(new RealmObject.Metadata
{
Table = table,
Helper = helper,
ColumnIndices = initColumnMap,
PrimaryKeyColumnIndex = initPrimaryKeyIndex,
Schema = schema
});
}
internal RealmResultsEnumerator(Realm realm, ResultsHandle rh, Schema.ObjectSchema schema)
{
_realm = realm;
_enumeratingResults = rh;
_schema = schema;
}
