/// <summary>
/// Performs the duplicate validation check.
/// </summary>
/// <param name="context">The <see cref="IPropertyContext"/>.</param>
/// <param name="items">The items to duplicate check.</param>
private void DuplicateValidation(IPropertyContext context, IEnumerable <TItemEntity> items)
{
if (!_duplicateCheck)
{
return;
}
if (_propertyExpression == null)
{
var dict = new Dictionary <UniqueKey, object?>(new UniqueKeyComparer());
foreach (var item in items.Where(x => x != null).Cast <IUniqueKey>())
{
if (dict.ContainsKey(item.UniqueKey))
{
if (item.UniqueKey.Args.Length == 1)
{
context.CreateErrorMessage(ValidatorStrings.DuplicateValueFormat, _duplicateText !, item.UniqueKey.Args[0]);
}
else
{
context.CreateErrorMessage(ValidatorStrings.DuplicateValue2Format, _duplicateText !);
}
return;
}
dict.Add(item.UniqueKey, null);
}
}
else
{
var dict = new Dictionary <object?, object?>();
foreach (var item in items)
{
var val = _propertyExpression.GetValue(item);
if (dict.ContainsKey(_propertyExpression.GetValue(item)))
{
context.CreateErrorMessage(ValidatorStrings.DuplicateValueFormat, _duplicateText !, val !);
return;
}
dict.Add(val, null);
}
}
}
