/// <summary>
/// Parses a the fullUri into a semantic <see cref="ODataPath"/> object.
/// </summary>
/// <remarks>
/// This is designed to parse the Path of a URL. If it is used to parse paths that are contained
/// within other places, such as $filter expressions, then it may not enforce correct rules.
/// </remarks>
/// <returns>An <see cref="ODataPath"/> representing the metadata-bound path expression.</returns>
/// <exception cref="ODataException">Throws if the input path is not an absolute uri.</exception>
private ODataPath ParsePathImplementation()
{
Uri pathUri = this.uri;
ExceptionUtils.CheckArgumentNotNull(pathUri, "pathUri");
UriPathParser pathParser = null;
if (this.Container == null)
{
pathParser = new UriPathParser(this.Settings);
}
else
{
pathParser = this.Container.GetService <UriPathParser>();
}
var rawSegments = pathParser.ParsePathIntoSegments(pathUri, this.ServiceRoot);
return(ODataPathFactory.BindPath(rawSegments, this.configuration));
}
/// <summary>
/// Parses the <paramref name="queryUri"/> and returns a new instance of <see cref="SyntacticTree"/>
/// describing the query specified by the uri.
/// </summary>
/// <param name="queryUri">The absolute URI which holds the query to parse. This must be a path relative to the <paramref name="serviceBaseUri"/>.</param>
/// <param name="serviceBaseUri">The base URI of the service.</param>
/// <param name="maxDepth">The maximum depth of any single query part. Security setting to guard against DoS attacks causing stack overflows and such.</param>
/// <returns>A new instance of <see cref="SyntacticTree"/> which represents the query specified in the <paramref name="queryUri"/>.</returns>
public static SyntacticTree ParseUri(Uri queryUri, Uri serviceBaseUri, int maxDepth)
{
ExceptionUtils.CheckArgumentNotNull(queryUri, "queryUri");
if (!queryUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.SyntacticTree_UriMustBeAbsolute(queryUri), "queryUri");
}
ExceptionUtils.CheckArgumentNotNull(serviceBaseUri, "serviceBaseUri");
if (!serviceBaseUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.SyntacticTree_UriMustBeAbsolute(serviceBaseUri), "serviceBaseUri");
}
if (maxDepth <= 0)
{
throw new ArgumentException(Strings.SyntacticTree_MaxDepthInvalid, "maxDepth");
}
UriPathParser pathParser = new UriPathParser(new ODataUriParserSettings()
{
PathLimit = maxDepth
});
var path = pathParser.ParsePathIntoSegments(queryUri, serviceBaseUri);
// COMPAT 32: Differencies in query options parsing in WCF DS
//
// We allow non-system $ query options in the lexical space.
// We allow multiple instances of a custom or non-system $ query option in the lexical space.
// TODO: we need to decide whether we want to allow multiple system $ query options with the same name (OIPI suggests that this is valid); we currently don't.
List <CustomQueryOptionToken> queryOptions = QueryOptionUtils.ParseQueryOptions(queryUri);
IDictionary <string, string> parameterAliases = queryOptions.GetParameterAliases();
QueryToken filter = null;
string filterQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.FilterQueryOption);
if (filterQuery != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
filter = expressionParser.ParseFilter(filterQuery);
}
IEnumerable <OrderByToken> orderByTokens = null;
string orderByQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.OrderByQueryOption);
if (orderByQuery != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
orderByTokens = expressionParser.ParseOrderBy(orderByQuery);
}
SelectToken select = null;
string selectQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.SelectQueryOption);
if (selectQuery != null)
{
SelectExpandParser selectParser = new SelectExpandParser(selectQuery, ODataUriParserSettings.DefaultSelectExpandLimit);
select = selectParser.ParseSelect();
}
ExpandToken expand = null;
string expandQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.ExpandQueryOption);
if (expandQuery != null)
{
SelectExpandParser expandParser = new SelectExpandParser(expandQuery, ODataUriParserSettings.DefaultSelectExpandLimit);
expand = expandParser.ParseExpand();
}
int? skip = null;
string skipQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.SkipQueryOption);
if (skipQuery != null)
{
int skipValue;
if (!TryUriStringToNonNegativeInteger(skipQuery, out skipValue))
{
throw new ODataException(Strings.SyntacticTree_InvalidSkipQueryOptionValue(skipQuery));
}
skip = skipValue;
}
int? top = null;
string topQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.TopQueryOption);
if (topQuery != null)
{
int topValue;
if (!TryUriStringToNonNegativeInteger(topQuery, out topValue))
{
throw new ODataException(Strings.SyntacticTree_InvalidTopQueryOptionValue(topQuery));
}
top = topValue;
}
string countQuery = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.CountQueryOption);
bool? count = ParseQueryCount(countQuery);
string format = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.FormatQueryOption);
return(new SyntacticTree(
parameterAliases,
path,
filter,
orderByTokens,
select,
expand,
skip,
top,
count,
format,
queryOptions.Count == 0 ? null : new ReadOnlyCollection <CustomQueryOptionToken>(queryOptions)));
}
