public bool TryParse(string input, out Range <T> result)
{
result = null;
if (string.IsNullOrWhiteSpace(input))
{
return(false);
}
Match match = regex.Match(input);
if (!match.Success)
{
return(false);
}
bool includeMinValue = match.Groups[IncludeMinValueGroupName].Value == "[";
bool includeMaxValue = match.Groups[IncludeMaxValueGroupName].Value == "]";
string minValueCapture = match.Groups[MinValueGroupName].Value;
string maxValueCapture = match.Groups[MaxValueGroupName].Value;
T minValue, maxValue;
if (!valueParser.TryParse(minValueCapture, out minValue) || !valueParser.TryParse(maxValueCapture, out maxValue))
{
return(false);
}
result = new Range <T>(minValue, maxValue, includeMinValue, includeMaxValue);
return(true);
}
public bool TryParse(string input, out List <T> result)
{
result = null;
if (string.IsNullOrWhiteSpace(input))
{
return(false);
}
var list = new List <T>();
var values = input.Split(new char[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var value in values)
{
if (string.IsNullOrWhiteSpace(value))
{
continue;
}
T element;
if (!valueParser.TryParse(value.Trim(), out element))
{
return(false);
}
list.Add(element);
}
if (list.Count == 0)
{
return(false);
}
result = list;
return(true);
}
public bool TryParse(string input, out T?result)
{
T value;
bool success = valueParser.TryParse(input, out value);
result = success ? value : default(T);
return(success);
}
public bool TryParse(string input, out Dictionary <TKey, TValue> result)
{
result = null;
if (string.IsNullOrWhiteSpace(input))
{
return(false);
}
var dictionary = new Dictionary <TKey, TValue>();
var keyValuePairs = input.Split(new char[] { ',', ';' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var keyValuePair in keyValuePairs)
{
if (string.IsNullOrWhiteSpace(keyValuePair))
{
continue;
}
var parts = keyValuePair.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length != 2)
{
return(false);
}
string keyString = parts[0].Trim();
string valueString = parts[1].Trim();
TKey key; TValue value;
if (!keyParser.TryParse(keyString, out key) || !valueParser.TryParse(valueString, out value))
{
return(false);
}
dictionary[key] = value;
}
if (dictionary.Count == 0)
{
return(false);
}
result = dictionary;
return(true);
}
private Expression GetFilterExpression <TEntity>(Filter filter, Expression entityParam)
where TEntity : class, new()
{
PropertyInfo propertyInfo = _propertyInfoResolver.GetPropertyInfo <TEntity>(filter.PropertyName);
if (propertyInfo == null)
{
throw new ArgumentException($"Filtered entity has no field with name {filter.PropertyName}.");
}
IValueParser valueParser = _filterValueParserFactory.GetValueParser(propertyInfo);
if (!valueParser.TryParse(filter.Value, out object parsedValue))
{
throw new ArgumentException(
$"Inappropriate filter value '{filter.Value}' for field with name {filter.PropertyName}.");
}
return(filter.Operation.GetOperationExpression(Expression.Property(entityParam, propertyInfo.Name), Expression.Constant(
parsedValue,
propertyInfo.PropertyType)));
}
