public FilterRule ToFilterRule <T>(FilterRequest <T> request)
{
return(new FilterRule()
{
Accessor = request.Accessor,
Operator = _key,
Value = request.GetValue()
});
}
public Expression <Func <T, bool> > WhereFilterFor <T>(FilterRequest <T> request)
{
var memberExpression = request.Property.GetMemberExpression(true);
var constantExpression = Expression.Constant(request.GetValue());
var expression = Expression.Call(memberExpression, _stringMethod, constantExpression);
var parameterExpression = Expression.Parameter(typeof(T), "target");
return(Expression.Lambda <Func <T, bool> >(expression, parameterExpression));
}
public bool Handles <T>(FilterRequest <T> request)
{
return(_key.Key == request.Operator && request.PropertyType == typeof(string));
}
public Expression <Func <T, bool> > WhereFilterFor <T>(FilterRequest <T> request)
{
return(new TOperation().GetPredicate(request.Property, request.GetValue()));
}
public bool Handles <T>(FilterRequest <T> request)
{
return(_key.Key == request.Operator && Matches(request.Accessor));
}
public FilterRule FilterRuleFor <T>(FilterRequest <T> request)
{
return(findHandler(request).ToFilterRule(request));
}
private IFilterHandler findHandler <T>(FilterRequest <T> request)
{
return(allHandlers().First(h => h.Handles(request)));
}
public Expression <Func <T, bool> > WhereFilterFor <T>(FilterRequest <T> request)
{
return(findHandler(request).WhereFilterFor(request));
}
