Ejemplo n.º 1
0
        /// <summary>
        /// Retrieve CollectionNode bound with given query token.
        /// </summary>
        /// <param name="queryToken">The query token</param>
        /// <param name="expectedType">The expected type that this collection holds</param>
        /// <param name="model">The Edm model</param>
        /// <returns>The corresponding CollectionNode</returns>
        private CollectionNode GetCollectionOperandFromToken(QueryToken queryToken, IEdmTypeReference expectedType, IEdmModel model)
        {
            CollectionNode operand      = null;
            LiteralToken   literalToken = queryToken as LiteralToken;

            if (literalToken != null)
            {
                string originalLiteralText = literalToken.OriginalText;

                // Parentheses-based collections are not standard JSON but bracket-based ones are.
                // Temporarily switch our collection to bracket-based so that the JSON reader will
                // correctly parse the collection. Then pass the original literal text to the token.
                string bracketLiteralText = originalLiteralText;
                if (bracketLiteralText[0] == '(')
                {
                    Debug.Assert(bracketLiteralText[bracketLiteralText.Length - 1] == ')',
                                 "Collection with opening '(' should have corresponding ')'");
                    if (bracketLiteralText.Replace(" ", String.Empty) == "()")
                    {
                        throw new ODataException(ODataErrorStrings.MetadataBinder_RightOperandNotCollectionValue);
                    }

                    StringBuilder replacedText = new StringBuilder(bracketLiteralText);
                    replacedText[0] = '[';
                    replacedText[replacedText.Length - 1] = ']';
                    bracketLiteralText = replacedText.ToString();

                    Debug.Assert(expectedType.IsCollection());
                    string expectedTypeFullName = expectedType.Definition.AsElementType().FullTypeName();
                    if (expectedTypeFullName.Equals("Edm.String", StringComparison.Ordinal))
                    {
                        // For collection of strings, need to convert single-quoted string to double-quoted string,
                        // and also, per ABNF, a single quote within a string literal is "encoded" as two consecutive single quotes in either
                        // literal or percent - encoded representation.
                        // Sample: ['a''bc','''def','xyz'''] ==> ["a'bc","'def","xyz'"], which is legitimate Json format.
                        bracketLiteralText = NormalizeStringCollectionItems(bracketLiteralText);
                    }
                    else if (expectedTypeFullName.Equals("Edm.Guid", StringComparison.Ordinal))
                    {
                        // For collection of Guids, need to convert the Guid literals to single-quoted form, so that it is compatible
                        // with the Json reader used for deserialization.
                        // Sample: [D01663CF-EB21-4A0E-88E0-361C10ACE7FD, 492CF54A-84C9-490C-A7A4-B5010FAD8104]
                        //    ==>  ['D01663CF-EB21-4A0E-88E0-361C10ACE7FD', '492CF54A-84C9-490C-A7A4-B5010FAD8104']
                        bracketLiteralText = NormalizeGuidCollectionItems(bracketLiteralText);
                    }
                }

                object       collection             = ODataUriConversionUtils.ConvertFromCollectionValue(bracketLiteralText, model, expectedType);
                LiteralToken collectionLiteralToken = new LiteralToken(collection, originalLiteralText, expectedType);
                operand = this.bindMethod(collectionLiteralToken) as CollectionConstantNode;
            }
            else
            {
                operand = this.bindMethod(queryToken) as CollectionNode;
            }

            if (operand == null)
            {
                throw new ODataException(ODataErrorStrings.MetadataBinder_RightOperandNotCollectionValue);
            }

            return(operand);
        }
Ejemplo n.º 2
0
        /// <summary>
        /// Building of a PathSegmentToken, continue parsing any expand options (nested $filter, $expand, etc)
        /// to build up an ExpandTermToken which fully represents the tree that makes up this expand term.
        /// </summary>
        /// <param name="pathToken">The PathSegmentToken representing the parsed expand path whose options we are now parsing.</param>
        /// <param name="optionsText">A string of the text between the parenthesis after an expand option.</param>
        /// <returns>The list of expand term tokens based on the path token, and all available expand options.</returns>
        internal List <ExpandTermToken> BuildExpandTermToken(PathSegmentToken pathToken, string optionsText)
        {
            // Setup a new lexer for parsing the optionsText
            this.lexer = new ExpressionLexer(optionsText ?? "", true /*moveToFirstToken*/, true /*useSemicolonDelimiter*/);

            // $expand option with star only support $ref option, $expand option property could be "*" or "*/$ref", special logic will be adopted.
            if (pathToken.Identifier == UriQueryConstants.Star || (pathToken.Identifier == UriQueryConstants.RefSegment && pathToken.NextToken.Identifier == UriQueryConstants.Star))
            {
                return(BuildStarExpandTermToken(pathToken));
            }

            QueryToken filterOption = null;
            IEnumerable <OrderByToken> orderByOptions = null;
            long?                    topOption        = null;
            long?                    skipOption       = null;
            bool?                    countOption      = null;
            long?                    levelsOption     = null;
            QueryToken               searchOption     = null;
            SelectToken              selectOption     = null;
            ExpandToken              expandOption     = null;
            ComputeToken             computeOption    = null;
            IEnumerable <QueryToken> applyOptions     = null;

            if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.OpenParen)
            {
                // advance past the '('
                this.lexer.NextToken();

                // Check for (), which is not allowed.
                if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.CloseParen)
                {
                    throw new ODataException(ODataErrorStrings.UriParser_MissingExpandOption(pathToken.Identifier));
                }

                // Look for all the supported query options
                while (this.lexer.CurrentToken.Kind != ExpressionTokenKind.CloseParen)
                {
                    string text = this.enableCaseInsensitiveBuiltinIdentifier
                        ? this.lexer.CurrentToken.Text.ToLowerInvariant()
                        : this.lexer.CurrentToken.Text;

                    // Prepend '$' prefix if needed.
                    if (this.enableNoDollarQueryOptions && !text.StartsWith(UriQueryConstants.DollarSign, StringComparison.Ordinal))
                    {
                        text = string.Format(CultureInfo.InvariantCulture, "{0}{1}", UriQueryConstants.DollarSign, text);
                    }

                    switch (text)
                    {
                    case ExpressionConstants.QueryOptionFilter:     // inner $filter
                        filterOption = ParseInnerFilter();
                        break;

                    case ExpressionConstants.QueryOptionOrderby:     // inner $orderby
                        orderByOptions = ParseInnerOrderBy();
                        break;

                    case ExpressionConstants.QueryOptionTop:     // inner $top
                        topOption = ParseInnerTop();
                        break;

                    case ExpressionConstants.QueryOptionSkip:     // inner $skip
                        skipOption = ParseInnerSkip();
                        break;

                    case ExpressionConstants.QueryOptionCount:     // inner $count
                        countOption = ParseInnerCount();
                        break;

                    case ExpressionConstants.QueryOptionSearch:     // inner $search
                        searchOption = ParseInnerSearch();
                        break;

                    case ExpressionConstants.QueryOptionLevels:     // inner $level
                        levelsOption = ParseInnerLevel();
                        break;

                    case ExpressionConstants.QueryOptionSelect:     // inner $select
                        selectOption = ParseInnerSelect(pathToken);
                        break;

                    case ExpressionConstants.QueryOptionExpand:     // inner $expand
                        expandOption = ParseInnerExpand(pathToken);
                        break;

                    case ExpressionConstants.QueryOptionCompute:     // inner $compute
                        computeOption = ParseInnerCompute();
                        break;

                    case ExpressionConstants.QueryOptionApply:     // inner $apply
                        applyOptions = ParseInnerApply();
                        break;

                    default:
                    {
                        throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
                    }
                    }
                }

                // Move past the ')'
                this.lexer.NextToken();
            }

            // Either there was no '(' at all or we just read past the ')' so we should be at the end
            if (this.lexer.CurrentToken.Kind != ExpressionTokenKind.End)
            {
                throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
            }

            // TODO, there should be some check here in case pathToken identifier is $ref, select, expand and levels options are not allowed.
            List <ExpandTermToken> expandTermTokenList = new List <ExpandTermToken>();
            ExpandTermToken        currentToken        = new ExpandTermToken(pathToken, filterOption, orderByOptions, topOption,
                                                                             skipOption, countOption, levelsOption, searchOption, selectOption, expandOption, computeOption, applyOptions);

            expandTermTokenList.Add(currentToken);

            return(expandTermTokenList);
        }
Ejemplo n.º 3
0
        /// <summary>
        /// Visits a <see cref="QueryToken"/> in the lexical tree and binds it to metadata producing a semantic <see cref="QueryNode"/>.
        /// </summary>
        /// <param name="token">The query token on the input.</param>
        /// <returns>The bound query node output.</returns>
        protected internal QueryNode Bind(QueryToken token)
        {
            ExceptionUtils.CheckArgumentNotNull(token, "token");
            this.BindingState.RecurseEnter();
            QueryNode result;

            switch (token.Kind)
            {
            case QueryTokenKind.Any:
                result = this.BindAnyAll((AnyToken)token);
                break;

            case QueryTokenKind.All:
                result = this.BindAnyAll((AllToken)token);
                break;

            case QueryTokenKind.InnerPath:
                result = this.BindInnerPathSegment((InnerPathToken)token);
                break;

            case QueryTokenKind.Literal:
                result = this.BindLiteral((LiteralToken)token);
                break;

            case QueryTokenKind.StringLiteral:
                result = this.BindStringLiteral((StringLiteralToken)token);
                break;

            case QueryTokenKind.BinaryOperator:
                result = this.BindBinaryOperator((BinaryOperatorToken)token);
                break;

            case QueryTokenKind.UnaryOperator:
                result = this.BindUnaryOperator((UnaryOperatorToken)token);
                break;

            case QueryTokenKind.EndPath:
                result = this.BindEndPath((EndPathToken)token);
                break;

            case QueryTokenKind.FunctionCall:
                result = this.BindFunctionCall((FunctionCallToken)token);
                break;

            case QueryTokenKind.DottedIdentifier:
                result = this.BindCast((DottedIdentifierToken)token);
                break;

            case QueryTokenKind.RangeVariable:
                result = this.BindRangeVariable((RangeVariableToken)token);
                break;

            case QueryTokenKind.FunctionParameterAlias:
                result = this.BindParameterAlias((FunctionParameterAliasToken)token);
                break;

            case QueryTokenKind.FunctionParameter:
                result = this.BindFunctionParameter((FunctionParameterToken)token);
                break;

            case QueryTokenKind.In:
                result = this.BindIn((InToken)token);
                break;

            default:
                throw new ODataException(ODataErrorStrings.MetadataBinder_UnsupportedQueryTokenKind(token.Kind));
            }

            if (result == null)
            {
                throw new ODataException(ODataErrorStrings.MetadataBinder_BoundNodeCannotBeNull(token.Kind));
            }

            this.BindingState.RecurseLeave();
            return(result);
        }
Ejemplo n.º 4
0
        /// <summary>
        /// Building off a PathSegmentToken, continue parsing any select options (nested $filter, $expand, etc)
        /// to build up an SelectTermToken which fully represents the tree that makes up this select term.
        /// </summary>
        /// <param name="pathToken">The PathSegmentToken representing the parsed select path whose options we are now parsing.</param>
        /// <param name="optionsText">A string of the text between the parenthesis after a select option.</param>
        /// <returns>The select term token based on the path token, and all available select options.</returns>
        internal SelectTermToken BuildSelectTermToken(PathSegmentToken pathToken, string optionsText)
        {
            // Setup a new lexer for parsing the optionsText
            this.lexer = new ExpressionLexer(optionsText ?? "", true /*moveToFirstToken*/, true /*useSemicolonDelimiter*/);

            QueryToken filterOption = null;
            IEnumerable <OrderByToken> orderByOptions = null;
            long?        topOption     = null;
            long?        skipOption    = null;
            bool?        countOption   = null;
            QueryToken   searchOption  = null;
            SelectToken  selectOption  = null;
            ComputeToken computeOption = null;

            if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.OpenParen)
            {
                // advance past the '('
                this.lexer.NextToken();

                // Check for (), which is not allowed.
                if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.CloseParen)
                {
                    throw new ODataException(ODataErrorStrings.UriParser_MissingSelectOption(pathToken.Identifier));
                }

                // Look for all the supported query options
                while (this.lexer.CurrentToken.Kind != ExpressionTokenKind.CloseParen)
                {
                    string text = this.enableCaseInsensitiveBuiltinIdentifier
                        ? this.lexer.CurrentToken.Text.ToLowerInvariant()
                        : this.lexer.CurrentToken.Text;

                    // Prepend '$' prefix if needed.
                    if (this.enableNoDollarQueryOptions && !text.StartsWith(UriQueryConstants.DollarSign, StringComparison.Ordinal))
                    {
                        text = string.Format(CultureInfo.InvariantCulture, "{0}{1}", UriQueryConstants.DollarSign, text);
                    }

                    switch (text)
                    {
                    case ExpressionConstants.QueryOptionFilter:     // inner $filter
                        filterOption = ParseInnerFilter();
                        break;

                    case ExpressionConstants.QueryOptionOrderby:     // inner $orderby
                        orderByOptions = ParseInnerOrderBy();
                        break;

                    case ExpressionConstants.QueryOptionTop:     // inner $top
                        topOption = ParseInnerTop();
                        break;

                    case ExpressionConstants.QueryOptionSkip:     // innner $skip
                        skipOption = ParseInnerSkip();
                        break;

                    case ExpressionConstants.QueryOptionCount:     // inner $count
                        countOption = ParseInnerCount();
                        break;

                    case ExpressionConstants.QueryOptionSearch:     // inner $search
                        searchOption = ParseInnerSearch();
                        break;

                    case ExpressionConstants.QueryOptionSelect:     // inner $select
                        selectOption = ParseInnerSelect(pathToken);
                        break;

                    case ExpressionConstants.QueryOptionCompute:     // inner $compute
                        computeOption = ParseInnerCompute();
                        break;

                    default:
                        throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
                    }
                }

                // Move past the ')'
                this.lexer.NextToken();
            }

            // Either there was no '(' at all or we just read past the ')' so we should be at the end
            if (this.lexer.CurrentToken.Kind != ExpressionTokenKind.End)
            {
                throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
            }

            return(new SelectTermToken(pathToken, filterOption, orderByOptions, topOption, skipOption, countOption, searchOption, selectOption, computeOption));
        }
Ejemplo n.º 5
0
        /// <summary>
        /// Building off of a PathSegmentToken, continue parsing any expand options (nested $filter, $expand, etc)
        /// to build up an ExpandTermToken which fully represents the tree that makes up this expand term.
        /// </summary>
        /// <param name="pathToken">The PathSegmentToken representing the parsed expand path whose options we are now parsing.</param>
        /// <param name="optionsText">A string of the text between the parenthesis after an expand option.</param>
        /// <returns>The list of expand term tokens based on the path token, and all available expand options.</returns>
        internal List <ExpandTermToken> BuildExpandTermToken(PathSegmentToken pathToken, string optionsText)
        {
            // Setup a new lexer for parsing the optionsText
            this.lexer = new ExpressionLexer(optionsText ?? "", true /*moveToFirstToken*/, true /*useSemicolonDelimiter*/);

            // $expand option with star only support $ref option, $expand option property could be "*" or "*/$ref", special logic will be adopted.
            if (pathToken.Identifier == UriQueryConstants.Star || (pathToken.Identifier == UriQueryConstants.RefSegment && pathToken.NextToken.Identifier == UriQueryConstants.Star))
            {
                return(BuildStarExpandTermToken(pathToken));
            }

            QueryToken filterOption = null;
            IEnumerable <OrderByToken> orderByOptions = null;
            long?        topOption     = null;
            long?        skipOption    = null;
            bool?        countOption   = null;
            long?        levelsOption  = null;
            QueryToken   searchOption  = null;
            SelectToken  selectOption  = null;
            ExpandToken  expandOption  = null;
            ComputeToken computeOption = null;

            if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.OpenParen)
            {
                // advance past the '('
                this.lexer.NextToken();

                // Check for (), which is not allowed.
                if (this.lexer.CurrentToken.Kind == ExpressionTokenKind.CloseParen)
                {
                    throw new ODataException(ODataErrorStrings.UriParser_MissingExpandOption(pathToken.Identifier));
                }

                // Look for all the supported query options
                while (this.lexer.CurrentToken.Kind != ExpressionTokenKind.CloseParen)
                {
                    string text = this.enableCaseInsensitiveBuiltinIdentifier
                        ? this.lexer.CurrentToken.Text.ToLowerInvariant()
                        : this.lexer.CurrentToken.Text;

                    // Prepend '$' prefix if needed.
                    if (this.enableNoDollarQueryOptions && !text.StartsWith(UriQueryConstants.DollarSign, StringComparison.Ordinal))
                    {
                        text = string.Format(CultureInfo.InvariantCulture, "{0}{1}", UriQueryConstants.DollarSign, text);
                    }

                    switch (text)
                    {
                    case ExpressionConstants.QueryOptionFilter:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string filterText = this.ReadQueryOption();

                        UriQueryExpressionParser filterParser = new UriQueryExpressionParser(this.MaxFilterDepth, enableCaseInsensitiveBuiltinIdentifier);
                        filterOption = filterParser.ParseFilter(filterText);
                        break;
                    }

                    case ExpressionConstants.QueryOptionOrderby:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string orderByText = this.ReadQueryOption();

                        UriQueryExpressionParser orderbyParser = new UriQueryExpressionParser(this.MaxOrderByDepth, enableCaseInsensitiveBuiltinIdentifier);
                        orderByOptions = orderbyParser.ParseOrderBy(orderByText);
                        break;
                    }

                    case ExpressionConstants.QueryOptionTop:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string topText = this.ReadQueryOption();

                        // TryParse requires a non-nullable non-negative long.
                        long top;
                        if (!long.TryParse(topText, out top) || top < 0)
                        {
                            throw new ODataException(ODataErrorStrings.UriSelectParser_InvalidTopOption(topText));
                        }

                        topOption = top;
                        break;
                    }

                    case ExpressionConstants.QueryOptionSkip:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string skipText = this.ReadQueryOption();

                        // TryParse requires a non-nullable non-negative long.
                        long skip;
                        if (!long.TryParse(skipText, out skip) || skip < 0)
                        {
                            throw new ODataException(ODataErrorStrings.UriSelectParser_InvalidSkipOption(skipText));
                        }

                        skipOption = skip;
                        break;
                    }

                    case ExpressionConstants.QueryOptionCount:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string countText = this.ReadQueryOption();
                        switch (countText)
                        {
                        case ExpressionConstants.KeywordTrue:
                        {
                            countOption = true;
                            break;
                        }

                        case ExpressionConstants.KeywordFalse:
                        {
                            countOption = false;
                            break;
                        }

                        default:
                        {
                            throw new ODataException(ODataErrorStrings.UriSelectParser_InvalidCountOption(countText));
                        }
                        }

                        break;
                    }

                    case ExpressionConstants.QueryOptionLevels:
                    {
                        levelsOption = ResolveLevelOption();
                        break;
                    }

                    case ExpressionConstants.QueryOptionSearch:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string searchText = this.ReadQueryOption();

                        SearchParser searchParser = new SearchParser(this.MaxSearchDepth);
                        searchOption = searchParser.ParseSearch(searchText);

                        break;
                    }

                    case ExpressionConstants.QueryOptionSelect:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string selectText = this.ReadQueryOption();

                        SelectExpandParser innerSelectParser = new SelectExpandParser(selectText, this.maxRecursionDepth, enableCaseInsensitiveBuiltinIdentifier);
                        selectOption = innerSelectParser.ParseSelect();
                        break;
                    }

                    case ExpressionConstants.QueryOptionCompute:
                    {
                        this.lexer.NextToken();
                        string computeText = this.ReadQueryOption();

                        UriQueryExpressionParser computeParser = new UriQueryExpressionParser(this.MaxOrderByDepth, enableCaseInsensitiveBuiltinIdentifier);
                        computeOption = computeParser.ParseCompute(computeText);
                        break;
                    }

                    case ExpressionConstants.QueryOptionExpand:
                    {
                        // advance to the equal sign
                        this.lexer.NextToken();
                        string expandText = this.ReadQueryOption();

                        // As 2016/1/8, the navigation property is only supported in entity type, and will support in ComplexType in future.
                        IEdmStructuredType targetEntityType = null;
                        if (this.resolver != null && this.parentEntityType != null)
                        {
                            var parentProperty = this.resolver.ResolveProperty(parentEntityType, pathToken.Identifier) as IEdmNavigationProperty;

                            // it is a navigation property, need to find the type.
                            // Like $expand=Friends($expand=Trips($expand=*)), when expandText becomes "Trips($expand=*)",
                            // find navigation property Trips of Friends, then get Entity type of Trips.
                            if (parentProperty != null)
                            {
                                targetEntityType = parentProperty.ToEntityType();
                            }
                        }

                        SelectExpandParser innerExpandParser = new SelectExpandParser(
                            resolver,
                            expandText,
                            targetEntityType,
                            this.maxRecursionDepth - 1,
                            this.enableCaseInsensitiveBuiltinIdentifier,
                            this.enableNoDollarQueryOptions);
                        expandOption = innerExpandParser.ParseExpand();
                        break;
                    }

                    default:
                    {
                        throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
                    }
                    }
                }

                // Move past the ')'
                this.lexer.NextToken();
            }

            // Either there was no '(' at all or we just read past the ')' so we should be at the end
            if (this.lexer.CurrentToken.Kind != ExpressionTokenKind.End)
            {
                throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(this.lexer.ExpressionText));
            }

            // TODO, there should be some check here in case pathToken identifier is $ref, select, expand and levels options are not allowed.
            List <ExpandTermToken> expandTermTokenList = new List <ExpandTermToken>();
            ExpandTermToken        currentToken        = new ExpandTermToken(pathToken, filterOption, orderByOptions, topOption,
                                                                             skipOption, countOption, levelsOption, searchOption, selectOption, expandOption, computeOption);

            expandTermTokenList.Add(currentToken);

            return(expandTermTokenList);
        }
Ejemplo n.º 6
0
 /// <summary>
 /// Parses the All portion of the query
 /// </summary>
 /// <param name="parent">The parent of the All node.</param>
 /// <returns>The lexical token representing the All query.</returns>
 private QueryToken ParseAll(QueryToken parent)
 {
     return(this.ParseAnyAll(parent, false));
 }
Ejemplo n.º 7
0
 /// <summary>
 /// Parses the Any portion of the query
 /// </summary>
 /// <param name="parent">The parent of the Any node.</param>
 /// <returns>The lexical token representing the Any query.</returns>
 private QueryToken ParseAny(QueryToken parent)
 {
     return(this.ParseAnyAll(parent, true));
 }
Ejemplo n.º 8
0
        /// <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)));
        }