private static bool WorkForEntitySection(QueryDetail.QueryDetail result, string firstSection)
{
var match = _entityWithKeyFormat.Match(firstSection);
if (match.Success)
{
if (match.Groups[2].Success &&
!string.IsNullOrWhiteSpace(match.Groups[2].Value) &&
match.Groups[3].Success &&
!string.IsNullOrWhiteSpace(match.Groups[3].Value))
{
result.EntitySelectors.Add(new SingleEntitySelector(match.Groups[1].Value, match.Groups[3].Value));
}
else
{
result.EntitySelectors.Add(new ListEntitySelector(firstSection));
}
return(true);
}
return(false);
}
public QueryDetail.QueryDetail ParseQuery(string urlString, ParseOptions options)
{
if (urlString == null)
{
throw new ArgumentNullException(nameof(urlString));
}
if (string.IsNullOrWhiteSpace(urlString))
{
throw new ArgumentException(nameof(urlString));
}
var urlStart = $"{options.BaseUrl.TrimEnd('/')}/{options.ODataDirectory.Trim('/')}";
if (!urlString.StartsWith(urlStart))
{
throw new ArgumentException("Wrong Format", nameof(urlString));
}
Uri url;
var result = new QueryDetail.QueryDetail(options);
try
{
url = new Uri(urlString);
}
catch (UriFormatException exception)
{
throw new ArgumentException("Wrong Format", nameof(urlString), exception);
}
var firstSection = url.AbsoluteUri.Substring(urlStart.Length).Trim('/');
if (!string.IsNullOrWhiteSpace(url.Query))
{
firstSection = firstSection.Replace(url.Query, "");
}
if (!firstSection.Contains("/"))
{
if (!WorkForEntitySection(result, firstSection))
{
throw new ArgumentException("Wrong entity format", nameof(urlString));
}
}
else
{
var entitySections = firstSection.Split('/');
foreach (var s in entitySections)
{
if (!WorkForEntitySection(result, s))
{
throw new ArgumentException("Wrong entity format", nameof(urlString));
}
}
}
var query = string.IsNullOrWhiteSpace(url.Query) ? null : url.Query.TrimStart('?');
if (!string.IsNullOrWhiteSpace(query))
{
var parameters = query.Split('&');
foreach (var parameter in parameters)
{
var match = _queryStringFormat.Match(parameter);
if (!match.Success)
{
throw new ArgumentException("Wrong query format", nameof(urlString));
}
if (match.Groups[1].Value.StartsWith("$"))
{
int r;
switch (match.Groups[1].Value)
{
case "$select":
result.ColumnSelectors.AddRange(match.Groups[2].Value.Split(','));
break;
case "$top":
if (int.TryParse(match.Groups[2].Value, out r))
{
result.Top = r;
}
else
{
throw new ArgumentException("wrong $top value", nameof(urlString));
}
break;
case "$skip":
if (int.TryParse(match.Groups[2].Value, out r))
{
result.Skip = r;
}
else
{
throw new ArgumentException("wrong $skip value", nameof(urlString));
}
break;
}
}
else if (match.Groups[1].Value.StartsWith("@"))
{
}
}
}
return(result);
}
