/// <summary>
/// Initializes FilterExpressionWrapper with given filterString.
/// </summary>
public FilterExpressionWrapper(string filterString)
{
ValidateArg.NotNullOrEmpty(filterString, "filterString");
this.FilterString = filterString;
try
{
this.filterExpression = FilterExpression.Parse(filterString);
}
catch (FormatException ex)
{
this.ParseError = ex.Message;
}
}
/// <summary>
/// Initializes FilterExpressionWrapper with given filterString and options.
/// </summary>
public FilterExpressionWrapper(string filterString, FilterOptions options)
{
ValidateArg.NotNullOrEmpty(filterString, "filterString");
this.FilterString = filterString;
this.FilterOptions = options;
try
{
// We prefer fast filter when it's available.
this.filterExpression = FilterExpression.Parse(filterString, out this.fastFilter);
if (UseFastFilter)
{
this.filterExpression = null;
// Property value regex is only supported for fast filter,
// so we ignore it if no fast filter is constructed.
// TODO: surface an error message to suer.
var regexString = options?.FilterRegEx;
if (!string.IsNullOrEmpty(regexString))
{
Debug.Assert(options.FilterRegExReplacement != null ? options.FilterRegEx != null : true);
this.fastFilter.PropertyValueRegex = new Regex(regexString, RegexOptions.Compiled);
this.fastFilter.PropertyValueRegexReplacement = options.FilterRegExReplacement;
}
}
}
catch (FormatException ex)
{
this.ParseError = ex.Message;
}
catch (ArgumentException ex)
{
this.fastFilter = null;
this.ParseError = ex.Message;
}
}
