public static FilterDefinition GetFilter(string expression)
{
if (string.IsNullOrWhiteSpace(expression))
{
return(null);
}
expression = expression.Replace(" ", " ");
expression = expression.Trim();
var trysymbol = GetFilterBySymbol(expression);
if (trysymbol != null)
{
return(trysymbol);
}
FilterDefinition filter = new FilterDefinition();
int index = expression.IndexOf(" ");
if (index == -1)
{
filter.FieldName = expression;
filter.Comparer = Comparer.EqualTo;
filter.FieldValue = "true";
}
else
{
filter.FieldName = expression.Substring(0, index);
var nextindex = expression.IndexOf(" ", index + 1);
if (nextindex == -1)
{
string compare = expression.Substring(index).Trim();
filter.Comparer = ComparerHelper.GetComparer(compare);
}
else
{
string compare = expression.Substring(index, nextindex - index);
filter.Comparer = ComparerHelper.GetComparer(compare);
filter.FieldValue = expression.Substring(nextindex).Trim();
}
}
return(filter);
}
public HashSet(int c, Generic.IEqualityComparer <T> comparer)
{
#if DEBUG
if (comparer == null)
{
throw new ArgumentNullException("comparer should not be null!");
}
#endif
m_comparer = comparer ?? ComparerHelper.GetComparer <T>();
m_lastIndex = 0;
Count = 0;
m_freeList = -1;
int prime = HashHelpers.GetPrime(c);
m_buckets = new int[prime];
m_slots = new Slot[prime];
}
public static FilterDefinition GetFilterBySymbol(string expression)
{
foreach (var item in ComparerList)
{
int index = expression.IndexOf(item);
if (index > -1)
{
FilterDefinition filter = new FilterDefinition();
filter.FieldName = expression.Substring(0, index).Trim();
filter.FieldValue = expression.Substring(index + item.Length).Trim();
filter.Comparer = ComparerHelper.GetComparer(item);
return(filter);
}
}
return(null);
}