/// <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);
}
/// <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);
}
/// <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);
}
/// <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));
}
/// <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);
}
/// <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));
}
/// <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));
}
/// <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)));
}