private void AddSort(LambdaExpression lambda, bool isStarting, bool ascending)
{
var body = lambda.Body as MemberExpression;
if (body == null)
{
throw new NotSupportedException($"The expression {lambda} cannot be used in an Order clause");
}
if (isStarting)
{
if (OptionalSortDescriptorBuilder == null)
{
OptionalSortDescriptorBuilder = new SortDescriptorBuilder(_metadata.Table);
}
else
{
var badCall = ascending ? "ThenBy" : "ThenByDescending";
throw new NotSupportedException($"You can only use one OrderBy or OrderByDescending clause, subsequent sort conditions should be {badCall}");
}
}
var propertyChain = TraverseSort(body).Select(n =>
{
var metadata = _realm.Metadata[n.Item1.Name];
return(metadata.PropertyIndices[n.Item2]);
});
OptionalSortDescriptorBuilder.AddClause(propertyChain, ascending);
}
private void AddSort(LambdaExpression lambda, bool isStarting, bool ascending)
{
var body = lambda.Body as MemberExpression;
if (body == null)
{
throw new NotSupportedException($"The expression {lambda} cannot be used in an Order clause");
}
if (isStarting)
{
if (OptionalSortDescriptorBuilder == null)
{
OptionalSortDescriptorBuilder = _realm.CreateSortDescriptorForTable(_metadata);
}
else
{
var badCall = ascending ? "ThenBy" : "ThenByDescending";
throw new NotSupportedException($"You can only use one OrderBy or OrderByDescending clause, subsequent sort conditions should be {badCall}");
}
}
var sortColName = body.Member.Name;
OptionalSortDescriptorBuilder.AddClause(sortColName, ascending);
}
public IntPtr CreateSortedResults(SharedRealmHandle sharedRealmHandle, SortDescriptorBuilder sortDescriptorBuilder)
{
var marshaledValues = sortDescriptorBuilder.Flatten();
var result = NativeMethods.create_sorted_results(this, sharedRealmHandle, marshaledValues.Item2, (IntPtr)marshaledValues.Item2.Length, marshaledValues.Item1, out var nativeException);
nativeException.ThrowIfNecessary();
return(result);
}
internal ResultsHandle MakeResultsForQuery(QueryHandle builtQuery, SortDescriptorBuilder optionalSortDescriptorBuilder)
{
var resultsPtr = IntPtr.Zero;
if (optionalSortDescriptorBuilder == null)
{
return(builtQuery.CreateResults(SharedRealmHandle));
}
return(builtQuery.CreateSortedResults(SharedRealmHandle, optionalSortDescriptorBuilder));
}
public static IntPtr CreateSortedResults(TableHandle tableHandle, SharedRealmHandle sharedRealmHandle, SortDescriptorBuilder sortDescriptorBuilder)
{
NativeException nativeException;
var marshaledValues = sortDescriptorBuilder.Flatten();
var result = create_sorted_results(tableHandle, sharedRealmHandle, marshaledValues.Item2, (IntPtr)marshaledValues.Item2.Length, marshaledValues.Item1, out nativeException);
nativeException.ThrowIfNecessary();
return(result);
}
