private static ConstantExpression GetConstantExpression(string value, SearchableType type = SearchableType.String)
{
switch (type)
{
case SearchableType.String:
return(Expression.Constant(value));
case SearchableType.Int32:
return(Expression.Constant(int.Parse(value)));
case SearchableType.Boolen:
return(Expression.Constant(bool.Parse(value)));
default:
return(Expression.Constant(value));
}
}
public static string ToSearchable(this string value, SearchableType type = SearchableType.None, string replacementString = " ")
{
if (value == null)
{
return(null);
}
var result = new StringBuilder();
switch (type)
{
// extract only digit
case SearchableType.Digit:
foreach (var c in value)
{
if (char.IsDigit(c))
{
result.Append(c);
}
}
while (result.Length > 1 && result[0] == '0')
{
result.Remove(0, 1);
}
break;
// extract only digit or Letter
case SearchableType.LetterOrDigit:
foreach (var c in value)
{
if (char.IsLetterOrDigit(c))
{
result.Append(c);
}
}
return(ToSearchable(result.ToString()));
case SearchableType.LetterOrDigitWithReplacement:
foreach (var c in ToSearchable(value))
{
if (char.IsLetterOrDigit(c))
{
result.Append(c);
}
else
{
result.Append(replacementString);
}
}
break;
default:
foreach (var c in value.Normalize(NormalizationForm.FormD))
{
if (char.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark)
{
result.Append(char.ToUpper(c));
}
}
break;
}
return(result.ToString());
}
public SearchableAttribute(SearchableType type = SearchableType.None) => Type = type;
public SearchableInfo(SearchableType searchableType, string columnName)
{
SearchableType = searchableType;
ColumnName = columnName;
}
