/// <summary>
/// Parses the key value literal.
/// </summary>
/// <param name="lexer">The lexer positioned on the key value.</param>
/// <returns>The literal query token.</returns>
private static LiteralQueryToken ParseKeyValueLiteral(ExpressionLexer lexer)
{
Debug.Assert(lexer != null, "lexer != null");
LiteralQueryToken result = UriQueryExpressionParser.TryParseLiteral(lexer);
if (result == null)
{
throw new ODataException(Strings.UriQueryPathParser_InvalidKeyValueLiteral(lexer.CurrentToken.Text));
}
return(result);
}
/// <summary>
/// Parses the <paramref name="queryUri"/> and returns a new instance of <see cref="QueryDescriptorQueryToken"/>
/// 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="QueryDescriptorQueryToken"/> which represents the query specified in the <paramref name="queryUri"/>.</returns>
public static QueryDescriptorQueryToken ParseUri(Uri queryUri, Uri serviceBaseUri, int maxDepth)
{
ExceptionUtils.CheckArgumentNotNull(queryUri, "queryUri");
if (!queryUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_UriMustBeAbsolute(queryUri), "queryUri");
}
ExceptionUtils.CheckArgumentNotNull(serviceBaseUri, "serviceBaseUri");
if (!serviceBaseUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_UriMustBeAbsolute(serviceBaseUri), "serviceBaseUri");
}
if (maxDepth <= 0)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_MaxDepthInvalid, "maxDepth");
}
QueryDescriptorQueryToken queryDescriptor = new QueryDescriptorQueryToken();
UriQueryPathParser pathParser = new UriQueryPathParser(maxDepth);
queryDescriptor.Path = pathParser.ParseUri(queryUri, serviceBaseUri);
List <QueryOptionQueryToken> queryOptions = HttpUtils.ParseQueryOptions(queryUri);
string filter = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.FilterQueryOption);
if (filter != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
queryDescriptor.Filter = expressionParser.ParseFilter(filter);
}
string orderBy = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.OrderByQueryOption);
if (orderBy != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
queryDescriptor.OrderByTokens = expressionParser.ParseOrderBy(orderBy);
}
string skip = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.SkipQueryOption);
if (skip != null)
{
int skipValue;
if (!UriPrimitiveTypeParser.TryUriStringToNonNegativeInteger(skip, out skipValue))
{
throw new ODataException(Strings.QueryDescriptorQueryToken_InvalidSkipQueryOptionValue(skip));
}
queryDescriptor.Skip = skipValue;
}
string top = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.TopQueryOption);
if (top != null)
{
int topValue;
if (!UriPrimitiveTypeParser.TryUriStringToNonNegativeInteger(top, out topValue))
{
throw new ODataException(Strings.QueryDescriptorQueryToken_InvalidTopQueryOptionValue(top));
}
queryDescriptor.Top = topValue;
}
// the remaining query options are stored on the query descriptor
queryDescriptor.QueryOptions = queryOptions.Count == 0 ? null : new ReadOnlyCollection <QueryOptionQueryToken>(queryOptions);
return(queryDescriptor);
}
/// <summary>
/// Parses the <paramref name="queryUri"/> and returns a new instance of <see cref="QueryDescriptorQueryToken"/>
/// 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="QueryDescriptorQueryToken"/> which represents the query specified in the <paramref name="queryUri"/>.</returns>
public static QueryDescriptorQueryToken ParseUri(Uri queryUri, Uri serviceBaseUri, int maxDepth)
{
ExceptionUtils.CheckArgumentNotNull(queryUri, "queryUri");
if (!queryUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_UriMustBeAbsolute(queryUri), "queryUri");
}
ExceptionUtils.CheckArgumentNotNull(serviceBaseUri, "serviceBaseUri");
if (!serviceBaseUri.IsAbsoluteUri)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_UriMustBeAbsolute(serviceBaseUri), "serviceBaseUri");
}
if (maxDepth <= 0)
{
throw new ArgumentException(Strings.QueryDescriptorQueryToken_MaxDepthInvalid, "maxDepth");
}
QueryDescriptorQueryToken queryDescriptor = new QueryDescriptorQueryToken();
UriQueryPathParser pathParser = new UriQueryPathParser(maxDepth);
queryDescriptor.Path = pathParser.ParseUri(queryUri, serviceBaseUri);
List<QueryOptionQueryToken> queryOptions = HttpUtils.ParseQueryOptions(queryUri);
string filter = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.FilterQueryOption);
if (filter != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
queryDescriptor.Filter = expressionParser.ParseFilter(filter);
}
string orderBy = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.OrderByQueryOption);
if (orderBy != null)
{
UriQueryExpressionParser expressionParser = new UriQueryExpressionParser(maxDepth);
queryDescriptor.OrderByTokens = expressionParser.ParseOrderBy(orderBy);
}
string skip = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.SkipQueryOption);
if (skip != null)
{
int skipValue;
if (!UriPrimitiveTypeParser.TryUriStringToNonNegativeInteger(skip, out skipValue))
{
throw new ODataException(Strings.QueryDescriptorQueryToken_InvalidSkipQueryOptionValue(skip));
}
queryDescriptor.Skip = skipValue;
}
string top = queryOptions.GetQueryOptionValueAndRemove(UriQueryConstants.TopQueryOption);
if (top != null)
{
int topValue;
if (!UriPrimitiveTypeParser.TryUriStringToNonNegativeInteger(top, out topValue))
{
throw new ODataException(Strings.QueryDescriptorQueryToken_InvalidTopQueryOptionValue(top));
}
queryDescriptor.Top = topValue;
}
// the remaining query options are stored on the query descriptor
queryDescriptor.QueryOptions = queryOptions.Count == 0 ? null : new ReadOnlyCollection<QueryOptionQueryToken>(queryOptions);
return queryDescriptor;
}