public SortOperationInvocation(
SortOperationKind kind,
PropertyInfo property)
{
Kind = kind;
Property = property
?? throw new ArgumentNullException(nameof(property));
}
public static SortOperationInvocation CreateSortOperation(
this QueryableSortVisitorContext context,
SortOperationKind kind)
{
if (context.InMemory)
{
return(context.Closure.CreateInMemorySortOperation(kind));
}
return(context.Closure.CreateSortOperation(kind));
}
public SortOperationInvocation(
SortOperationKind kind,
ParameterExpression parameterExpression,
Expression expressionBody
)
{
Kind = kind;
Parameter = parameterExpression
?? throw new ArgumentNullException(nameof(parameterExpression));
ExpressionBody = expressionBody
?? throw new ArgumentNullException(nameof(expressionBody));
}
public SortOperationInvocation CreateInMemorySortOperation(
SortOperationKind kind)
{
Expression nextExpression = Instance.Peek();
if (Property.Count > 0)
{
DefaultExpression defaultOfType =
Expression.Default(Property.Peek().PropertyType);
Stack <Expression> .Enumerator enumerator = Instance.GetEnumerator();
enumerator.MoveNext();
while (enumerator.MoveNext())
{
nextExpression =
SortExpressionBuilder.IfNullThenDefault(
enumerator.Current, nextExpression, defaultOfType);
}
}
return(new SortOperationInvocation(kind, Parameter, nextExpression));
}
public SortOperationInvocation CreateSortOperation(SortOperationKind kind)
{
return(new SortOperationInvocation(
kind, Parameter, Instance.Peek(), Property.Peek().PropertyType));
}
protected override SortOperationInvocation CreateSortOperation(
SortOperationKind kind)
{
return(Closure.CreateInMemorySortOperation(kind));
}
protected virtual SortOperationInvocation CreateSortOperation(SortOperationKind kind)
{
return(Closure.CreateSortOperation(kind));
}
