/// <summary>
/// Converts a string to a byte[] value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToByteArray.</remarks>
private static bool TryUriStringToByteArray(string text, out byte[] targetValue)
{
Debug.Assert(text != null, "text != null");
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixBinary, ref text))
{
targetValue = null;
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = null;
return(false);
}
try
{
targetValue = Convert.FromBase64String(text);
}
catch (FormatException)
{
targetValue = null;
return(false);
}
return(true);
}
/// <summary>
/// Parse the level option in the expand option text.
/// </summary>
/// <returns>The level option for expand in long type</returns>
private long?ParseInnerLevel()
{
long?levelsOption = null;
// advance to the equal sign
this.lexer.NextToken();
string levelsText = UriParserHelper.ReadQueryOption(this.lexer);
long level;
if (string.Equals(
ExpressionConstants.KeywordMax,
levelsText,
this.enableCaseInsensitiveBuiltinIdentifier ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal))
{
levelsOption = long.MinValue;
}
else if (!long.TryParse(levelsText, NumberStyles.None, CultureInfo.InvariantCulture, out level) || level < 0)
{
throw new ODataException(ODataErrorStrings.UriSelectParser_InvalidLevelsOption(levelsText));
}
else
{
levelsOption = level;
}
return(levelsOption);
}
/// <summary>
/// Parse the expand option in the select/expand option text.
/// </summary>
/// <param name="pathToken">The path segment token</param>
/// <returns>The expand option for select/expand</returns>
private ExpandToken ParseInnerExpand(PathSegmentToken pathToken)
{
// advance to the equal sign
this.lexer.NextToken();
string expandText = UriParserHelper.ReadQueryOption(this.lexer);
IEdmStructuredType targetStructuredType = null;
if (this.resolver != null && this.parentStructuredType != null)
{
var parentProperty = this.resolver.ResolveProperty(parentStructuredType, pathToken.Identifier);
// it is a 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.
// or for select query like: $select=Address($expand=City)
if (parentProperty != null)
{
targetStructuredType = parentProperty.Type.ToStructuredType();
}
}
SelectExpandParser innerExpandParser = new SelectExpandParser(
resolver,
expandText,
targetStructuredType,
this.maxRecursionDepth - 1,
this.enableCaseInsensitiveBuiltinIdentifier,
this.enableNoDollarQueryOptions);
return(innerExpandParser.ParseExpand());
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>Whether or not the expected formatting was found and successfully removed.</returns>
internal virtual bool TryRemoveFormatting(ref string text)
{
if (this.prefix != null)
{
if (!UriParserHelper.TryRemovePrefix(this.prefix, ref text))
{
return(false);
}
}
bool shouldBeQuoted = this.prefix != null || ValueOfTypeCanContainQuotes(this.expectedType);
if (shouldBeQuoted && !UriParserHelper.TryRemoveQuotes(ref text))
{
return(false);
}
if (this.suffix != null)
{
// we need to try to remove the literal even if it isn't required.
if (!TryRemoveLiteralSuffix(this.suffix, ref text) && this.suffixRequired)
{
return(false);
}
}
return(true);
}
/// <summary>
/// Parse the select option in the select/expand option text.
/// </summary>
/// <param name="pathToken">The path segment token</param>
/// <returns>The select option for select/expand</returns>
private SelectToken ParseInnerSelect(PathSegmentToken pathToken)
{
// advance to the equal sign
this.lexer.NextToken();
string selectText = UriParserHelper.ReadQueryOption(this.lexer);
IEdmStructuredType targetStructuredType = null;
if (this.resolver != null && this.parentStructuredType != null)
{
var parentProperty = this.resolver.ResolveProperty(parentStructuredType, pathToken.Identifier);
// It is a property, need to find the type.
// or for select query like: $select=Address($expand=City)
if (parentProperty != null)
{
targetStructuredType = parentProperty.Type.ToStructuredType();
}
}
SelectExpandParser innerSelectParser = new SelectExpandParser(
resolver,
selectText,
targetStructuredType,
this.maxRecursionDepth - 1,
this.enableCaseInsensitiveBuiltinIdentifier,
this.enableNoDollarQueryOptions);
return(innerSelectParser.ParseSelect());
}
/// <summary>
/// Try to parse the given text to a Geometry object.
/// </summary>
/// <param name="text">Text to parse.</param>
/// <param name="targetValue">Geometry to return.</param>
/// <param name="parsingFailureReasonException">The detailed reason of parsing error.</param>
/// <returns>True if succeeds, false if not.</returns>
private static bool TryUriStringToGeometry(string text, out Geometry targetValue, out UriLiteralParsingException parsingFailureReasonException)
{
parsingFailureReasonException = null;
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixGeometry, ref text))
{
targetValue = default(Geometry);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(Geometry);
return(false);
}
try
{
targetValue = LiteralUtils.ParseGeometry(text);
return(true);
}
catch (ParseErrorException e)
{
targetValue = default(Geometry);
parsingFailureReasonException =
new UriLiteralParsingException(e.Message);
return(false);
}
}
/// <summary>
/// Converts a string to a Duration value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToTime.</remarks>
private static bool TryUriStringToDuration(string text, out TimeSpan targetValue)
{
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixDuration, ref text))
{
targetValue = default(TimeSpan);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(TimeSpan);
return(false);
}
try
{
targetValue = EdmValueParser.ParseDuration(text);
return(true);
}
catch (FormatException)
{
targetValue = default(TimeSpan);
return(false);
}
}
/// <summary>
/// Try to bind an identifier to a EnumNode
/// </summary>
/// <param name="identifier">the identifier to bind</param>
/// <param name="typeReference">the enum typeReference</param>
/// <param name="modelWhenNoTypeReference">the current model when no enum typeReference.</param>
/// <param name="resolver">ODataUriResolver .</param>
/// <param name="boundEnum">an enum node .</param>
/// <returns>true if we bound an enum for this token.</returns>
internal static bool TryBindIdentifier(string identifier, IEdmEnumTypeReference typeReference, IEdmModel modelWhenNoTypeReference, ODataUriResolver resolver, out QueryNode boundEnum)
{
boundEnum = null;
string text = identifier;
// parse the string, e.g., NS.Color'Green'
// get type information, and also convert Green into an ODataEnumValue
// find the first ', before that, it is namespace.type
int indexOfSingleQuote = text.IndexOf('\'');
if (indexOfSingleQuote < 0)
{
return(false);
}
string namespaceAndType = text.Substring(0, indexOfSingleQuote);
Debug.Assert((typeReference == null) || (modelWhenNoTypeReference == null), "((typeReference == null) || (modelWhenNoTypeReference == null)");
// validate typeReference but allow type name not found in model for delayed throwing.
if ((typeReference != null) && !string.Equals(namespaceAndType, typeReference.FullName(), StringComparison.Ordinal))
{
return(false);
}
// get the type
IEdmEnumType enumType = typeReference != null
?
(IEdmEnumType)typeReference.Definition
:
UriEdmHelpers.FindEnumTypeFromModel(modelWhenNoTypeReference, namespaceAndType, resolver);
if (enumType == null)
{
return(false);
}
// now, find out the value
UriParserHelper.TryRemovePrefix(namespaceAndType, ref text);
UriParserHelper.TryRemoveQuotes(ref text);
// parse string or int value to edm enum value
string enumValueString = text;
ODataEnumValue enumValue;
if (!TryParseEnum(enumType, enumValueString, out enumValue))
{
return(false);
}
// create an enum node, enclosing an odata enum value
IEdmEnumTypeReference enumTypeReference = typeReference ?? new EdmEnumTypeReference(enumType, false);
boundEnum = new ConstantNode(enumValue, identifier, enumTypeReference);
return(true);
}
/// <summary>
/// Parse the compute option in the expand option text.
/// </summary>
/// <returns>The compute option for expand</returns>
private ComputeToken ParseInnerCompute()
{
this.lexer.NextToken();
string computeText = UriParserHelper.ReadQueryOption(this.lexer);
UriQueryExpressionParser computeParser = new UriQueryExpressionParser(this.MaxOrderByDepth, enableCaseInsensitiveBuiltinIdentifier);
return(computeParser.ParseCompute(computeText));
}
/// <summary>
/// Parse the apply option in the expand option text.
/// </summary>
/// <returns>The apply option for expand</returns>
private IEnumerable <QueryToken> ParseInnerApply()
{
this.lexer.NextToken();
string applyText = UriParserHelper.ReadQueryOption(this.lexer);
UriQueryExpressionParser applyParser = new UriQueryExpressionParser(this.MaxOrderByDepth, enableCaseInsensitiveBuiltinIdentifier);
return(applyParser.ParseApply(applyText));
}
/// <summary>
/// Parse the search option in the select/expand option text.
/// </summary>
/// <returns>The search option for select/expand</returns>
private QueryToken ParseInnerSearch()
{
// advance to the equal sign
this.lexer.NextToken();
string searchText = UriParserHelper.ReadQueryOption(this.lexer);
SearchParser searchParser = new SearchParser(this.MaxSearchDepth);
return(searchParser.ParseSearch(searchText));
}
/// <summary>
/// Parse the filter option in the $count segment.
/// </summary>
/// <returns>The filter option for the $count segment.</returns>
private QueryToken ParseInnerFilter()
{
// advance to the equal sign
this.lexer.NextToken();
string filterText = UriParserHelper.ReadQueryOption(this.lexer);
UriQueryExpressionParser filterParser = new UriQueryExpressionParser(ODataUriParserSettings.DefaultFilterLimit, this.UriQueryExpressionParser.EnableCaseInsensitiveBuiltinIdentifier);
return(filterParser.ParseFilter(filterText));
}
/// <summary>
/// Parse the filter option in the select/expand option text.
/// </summary>
/// <returns>The filter option for select/expand</returns>
private QueryToken ParseInnerFilter()
{
// advance to the equal sign
this.lexer.NextToken();
string filterText = UriParserHelper.ReadQueryOption(this.lexer);
UriQueryExpressionParser filterParser = new UriQueryExpressionParser(this.MaxFilterDepth, enableCaseInsensitiveBuiltinIdentifier);
return(filterParser.ParseFilter(filterText));
}
/// <summary>
/// Parse the orderby option in the select/expand option text.
/// </summary>
/// <returns>The orderby option for select/expand</returns>
private IEnumerable <OrderByToken> ParseInnerOrderBy()
{
// advance to the equal sign
this.lexer.NextToken();
string orderByText = UriParserHelper.ReadQueryOption(this.lexer);
UriQueryExpressionParser orderbyParser = new UriQueryExpressionParser(this.MaxOrderByDepth, enableCaseInsensitiveBuiltinIdentifier);
return(orderbyParser.ParseOrderBy(orderByText));
}
/// <summary>
/// Parse the search option in the $count segment.
/// </summary>
/// <returns>The search option for the $count segment.</returns>
private QueryToken ParseInnerSearch()
{
// advance to the equal sign
this.lexer.NextToken();
string searchText = UriParserHelper.ReadQueryOption(this.lexer);
SearchParser searchParser = new SearchParser(ODataUriParserSettings.DefaultSearchLimit);
return(searchParser.ParseSearch(searchText));
}
/// <summary>
/// Build a segment from a token.
/// </summary>
/// <param name="tokenIn">the token to bind</param>
/// <param name="model">The model.</param>
/// <param name="edmType">the type of the current scope based on type segments.</param>
/// <param name="resolver">Resolver for uri parser.</param>
/// <returns>The segment created from the token.</returns>
public static ODataPathSegment ConvertNonTypeTokenToSegment(PathSegmentToken tokenIn, IEdmModel model, IEdmStructuredType edmType, ODataUriResolver resolver)
{
ExceptionUtils.CheckArgumentNotNull(resolver, "resolver");
ODataPathSegment nextSegment;
if (UriParserHelper.IsAnnotation(tokenIn.Identifier))
{
if (TryBindAsDeclaredTerm(tokenIn, model, resolver, out nextSegment))
{
return(nextSegment);
}
string qualifiedTermName = tokenIn.Identifier.Remove(0, 1);
int separator = qualifiedTermName.LastIndexOf(".", StringComparison.Ordinal);
string namespaceName = qualifiedTermName.Substring(0, separator);
string termName = qualifiedTermName.Substring(separator == 0 ? 0 : separator + 1);
// Don't allow selecting odata control information
if (String.Compare(namespaceName, ODataConstants.ODataPrefix, StringComparison.OrdinalIgnoreCase) == 0)
{
throw new ODataException(ODataErrorStrings.UriSelectParser_TermIsNotValid(tokenIn.Identifier));
}
return(new AnnotationSegment(new EdmTerm(namespaceName, termName, EdmCoreModel.Instance.GetUntyped())));
}
if (TryBindAsDeclaredProperty(tokenIn, edmType, resolver, out nextSegment))
{
return(nextSegment);
}
// Operations must be container-qualified, and because the token type indicates it was not a .-seperated identifier, we should not try to look up operations.
if (tokenIn.IsNamespaceOrContainerQualified())
{
if (TryBindAsOperation(tokenIn, model, edmType, out nextSegment))
{
return(nextSegment);
}
// If an action or function is requested in a selectItem using a qualifiedActionName or a qualifiedFunctionName
// and that operation cannot be bound to the entities requested, the service MUST ignore the selectItem.
if (!edmType.IsOpen)
{
return(null);
}
}
if (edmType.IsOpen)
{
return(new DynamicPathSegment(tokenIn.Identifier));
}
throw new ODataException(ODataErrorStrings.MetadataBinder_PropertyNotDeclared(edmType.FullTypeName(), tokenIn.Identifier));
}
internal IEdmTypeReference GetLiteralEdmTypeReference()
{
Debug.Assert(this.Kind != ExpressionTokenKind.CustomTypeLiteral || this.LiteralEdmType != null, "ExpressionTokenKind is marked as CustomTypeLiteral but not EdmType was set");
if (this.LiteralEdmType == null && this.Kind != ExpressionTokenKind.CustomTypeLiteral)
{
this.LiteralEdmType = UriParserHelper.GetLiteralEdmTypeReference(this.Kind);
}
return(this.LiteralEdmType);
}
/// <summary>
/// Remove the given literal prefix
/// </summary>
/// <param name="literalPrefix">The custom name of the literal prefix</param>
/// <returns>'true' if the literal prefix is successfully found and removed; otherwise, 'false'.</returns>
/// <exception cref="ArgumentNullException">Argument is null or empty</exception>
public static bool RemoveCustomLiteralPrefix(string literalPrefix)
{
// Arguments validation
ExceptionUtils.CheckArgumentStringNotNullOrEmpty(literalPrefix, "literalPrefix");
UriParserHelper.ValidatePrefixLiteral(literalPrefix);
// Try to remove the custom uri literal prefix from cache
lock (Locker)
{
return(CustomLiteralPrefixesOfEdmTypes.Remove(literalPrefix));
}
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>
/// Whether or not the expected formatting was found and succesfully removed.
/// </returns>
internal override bool TryRemoveFormatting(ref string text)
{
if (!UriParserHelper.TryRemovePrefix(ExpressionConstants.LiteralPrefixBinary, ref text))
{
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
return(false);
}
return(true);
}
/// <summary>
/// Parse the skip option in the select/expand option text.
/// </summary>
/// <returns>The skip option for select/expand</returns>
private long?ParseInnerSkip()
{
// advance to the equal sign
this.lexer.NextToken();
string skipText = UriParserHelper.ReadQueryOption(this.lexer);
// 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));
}
return(skip);
}
/// <summary>
/// Parse the count option in the select/expand option text.
/// </summary>
/// <returns>The count option for select/expand</returns>
private bool?ParseInnerCount()
{
// advance to the equal sign
this.lexer.NextToken();
string countText = UriParserHelper.ReadQueryOption(this.lexer);
switch (countText)
{
case ExpressionConstants.KeywordTrue:
return(true);
case ExpressionConstants.KeywordFalse:
return(false);
default:
throw new ODataException(ODataErrorStrings.UriSelectParser_InvalidCountOption(countText));
}
}
/// <summary>
/// Tries to bind a given token as a declared annotation term.
/// </summary>
/// <param name="tokenIn">Token to bind.</param>
/// <param name="model">The model to search for this term</param>
/// <param name="resolver">Resolver for uri parser.</param>
/// <param name="segment">Bound segment if the token was bound to a declared term successfully, or null.</param>
/// <returns>True if the token was bound successfully, or false otherwise.</returns>
private static bool TryBindAsDeclaredTerm(PathSegmentToken tokenIn, IEdmModel model, ODataUriResolver resolver, out ODataPathSegment segment)
{
if (!UriParserHelper.IsAnnotation(tokenIn.Identifier))
{
segment = null;
return(false);
}
IEdmTerm term = resolver.ResolveTerm(model, tokenIn.Identifier.Remove(0, 1));
if (term == null)
{
segment = null;
return(false);
}
segment = new AnnotationSegment(term);
return(true);
}
/// <summary>
/// Add a literal prefix for the given EdmType.
/// </summary>
/// <example>filter=MyProperty eq MyCustomLiteral'VALUE'.
/// "MyCustomLiteral" is the literal prefix and the <paramref name="literalEdmTypeReference"/> is the type of the "VALUE".</example>
/// <param name="literalPrefix">The custom name of the literal prefix</param>
/// <param name="literalEdmTypeReference">The edm type of the custom literal</param>
/// <exception cref="ArgumentNullException">Arguments are null or empty</exception>
/// <exception cref="ArgumentException">The given literal prefix is not valid</exception>
/// <exception cref="ODataException">The given literal prefix already exists</exception>
public static void AddCustomLiteralPrefix(string literalPrefix, IEdmTypeReference literalEdmTypeReference)
{
// Arguments validation
ExceptionUtils.CheckArgumentNotNull(literalEdmTypeReference, "literalEdmTypeReference");
ExceptionUtils.CheckArgumentStringNotNullOrEmpty(literalPrefix, "literalPrefix");
UriParserHelper.ValidatePrefixLiteral(literalPrefix);
// Try to add the custom uri literal to cache
lock (Locker)
{
// Check if literal does already exists
if (CustomLiteralPrefixesOfEdmTypes.ContainsKey(literalPrefix))
{
throw new ODataException(ODataErrorStrings.CustomUriTypePrefixLiterals_AddCustomUriTypePrefixLiteralAlreadyExists(literalPrefix));
}
CustomLiteralPrefixesOfEdmTypes.Add(literalPrefix, literalEdmTypeReference);
}
}
/// <summary>Parses a token that starts with a digit.</summary>
/// <returns>The kind of token recognized.</returns>
private ExpressionTokenKind ParseFromDigit()
{
Debug.Assert(this.IsValidDigit || ('-' == this.ch), "this.IsValidDigit || ('-' == this.ch)");
ExpressionTokenKind result;
int tokenPos = this.textPos;
char startChar = this.ch.Value;
this.NextChar();
if (startChar == '0' && (this.ch == 'x' || this.ch == 'X'))
{
result = ExpressionTokenKind.BinaryLiteral;
do
{
this.NextChar();
}while (this.ch.HasValue && UriParserHelper.IsCharHexDigit(this.ch.Value));
}
else
{
result = ExpressionTokenKind.IntegerLiteral;
while (this.IsValidDigit)
{
this.NextChar();
}
// DateTimeOffset, Date and Guids will have '-' in them
if (this.ch == '-')
{
if (this.TryParseDate(tokenPos))
{
return(ExpressionTokenKind.DateLiteral);
}
else if (this.TryParseDateTimeoffset(tokenPos))
{
return(ExpressionTokenKind.DateTimeOffsetLiteral);
}
else if (this.TryParseGuid(tokenPos))
{
return(ExpressionTokenKind.GuidLiteral);
}
}
// TimeOfDay will have ":" in them
if (this.ch == ':')
{
if (this.TryParseTimeOfDay(tokenPos))
{
return(ExpressionTokenKind.TimeOfDayLiteral);
}
}
// Guids will have alpha-numeric characters along with '-', so if a letter is encountered
// try to see if this is Guid or not.
if (this.ch.HasValue && Char.IsLetter(this.ch.Value))
{
if (this.TryParseGuid(tokenPos))
{
return(ExpressionTokenKind.GuidLiteral);
}
}
if (this.ch == '.')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
this.ValidateDigit();
do
{
this.NextChar();
}while (this.IsValidDigit);
}
if (this.ch == 'E' || this.ch == 'e')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
if (this.ch == '+' || this.ch == '-')
{
this.NextChar();
}
this.ValidateDigit();
do
{
this.NextChar();
}while (this.IsValidDigit);
}
if (this.ch == 'M' || this.ch == 'm')
{
result = ExpressionTokenKind.DecimalLiteral;
this.NextChar();
}
else if (this.ch == 'd' || this.ch == 'D')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
}
else if (this.ch == 'L' || this.ch == 'l')
{
result = ExpressionTokenKind.Int64Literal;
this.NextChar();
}
else if (this.ch == 'f' || this.ch == 'F')
{
result = ExpressionTokenKind.SingleLiteral;
this.NextChar();
}
else
{
string valueStr = this.Text.Substring(tokenPos, this.textPos - tokenPos);
result = MakeBestGuessOnNoSuffixStr(valueStr, result);
}
}
return(result);
}
/// <summary>
/// Process a <see cref="PathSegmentToken"/> following any type segments if necessary.
/// </summary>
/// <param name="tokenIn">the path token to process.</param>
private List <ODataPathSegment> ProcessSelectTokenPath(PathSegmentToken tokenIn)
{
Debug.Assert(tokenIn != null, "tokenIn != null");
List <ODataPathSegment> pathSoFar = new List <ODataPathSegment>();
IEdmStructuredType currentLevelType = this.edmType;
// first, walk through all type segments in a row, converting them from tokens into segments.
if (tokenIn.IsNamespaceOrContainerQualified() && !UriParserHelper.IsAnnotation(tokenIn.Identifier))
{
PathSegmentToken firstNonTypeToken;
pathSoFar.AddRange(SelectExpandPathBinder.FollowTypeSegments(tokenIn, this.Model, this.Settings.SelectExpandLimit, this.configuration.Resolver, ref currentLevelType, out firstNonTypeToken));
Debug.Assert(firstNonTypeToken != null, "Did not get last token.");
tokenIn = firstNonTypeToken as NonSystemToken;
if (tokenIn == null)
{
throw new ODataException(ODataErrorStrings.SelectExpandBinder_SystemTokenInSelect(firstNonTypeToken.Identifier));
}
}
// next, create a segment for the first non-type segment in the path.
ODataPathSegment lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(tokenIn, this.Model, currentLevelType, this.configuration.Resolver, this.state);
// next, create an ODataPath and add the segments to it.
if (lastSegment != null)
{
pathSoFar.Add(lastSegment);
// try create a complex type property path.
while (true)
{
// no need to go on if the current property is not of complex type or collection of complex type,
// unless the segment is a primitive type cast or a property on an open complex property.
currentLevelType = lastSegment.EdmType as IEdmStructuredType;
IEdmCollectionType collectionType = lastSegment.EdmType as IEdmCollectionType;
IEdmPrimitiveType primitiveType = lastSegment.EdmType as IEdmPrimitiveType;
DynamicPathSegment dynamicPath = lastSegment as DynamicPathSegment;
if ((currentLevelType == null || currentLevelType.TypeKind != EdmTypeKind.Complex) &&
(collectionType == null || collectionType.ElementType.TypeKind() != EdmTypeKind.Complex) &&
(primitiveType == null || primitiveType.TypeKind != EdmTypeKind.Primitive) &&
(dynamicPath == null || tokenIn.NextToken == null))
{
break;
}
NonSystemToken nextToken = tokenIn.NextToken as NonSystemToken;
if (nextToken == null)
{
break;
}
if (UriParserHelper.IsAnnotation(nextToken.Identifier))
{
lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(nextToken, this.Model,
currentLevelType, this.configuration.Resolver, null);
}
else if (primitiveType == null && dynamicPath == null)
{
// This means last segment a collection of complex type,
// current segment can only be type cast and cannot be property name.
if (currentLevelType == null)
{
currentLevelType = collectionType.ElementType.Definition as IEdmStructuredType;
}
// If there is no collection type in the path yet, will try to bind property for the next token
// first try bind the segment as property.
lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(nextToken, this.Model,
currentLevelType, this.configuration.Resolver, null);
}
else
{
// determine whether we are looking at a type cast or a dynamic path segment.
EdmPrimitiveTypeKind nextTypeKind = EdmCoreModel.Instance.GetPrimitiveTypeKind(nextToken.Identifier);
IEdmPrimitiveType castType = EdmCoreModel.Instance.GetPrimitiveType(nextTypeKind);
if (castType != null)
{
lastSegment = new TypeSegment(castType, castType, null);
}
else if (dynamicPath != null)
{
lastSegment = new DynamicPathSegment(nextToken.Identifier);
}
else
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
}
// then try bind the segment as type cast.
if (lastSegment == null)
{
IEdmStructuredType typeFromNextToken =
UriEdmHelpers.FindTypeFromModel(this.Model, nextToken.Identifier, this.configuration.Resolver) as
IEdmStructuredType;
if (typeFromNextToken.IsOrInheritsFrom(currentLevelType))
{
lastSegment = new TypeSegment(typeFromNextToken, /*entitySet*/ null);
}
}
// type cast failed too.
if (lastSegment == null)
{
break;
}
// try move to and add next path segment.
tokenIn = nextToken;
pathSoFar.Add(lastSegment);
}
}
// non-navigation cases do not allow further segments in $select.
if (tokenIn.NextToken != null)
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
// Later, we can consider to create a "DynamicOperationSegment" to handle this.
// But now, Let's throw exception.
if (lastSegment == null)
{
throw new ODataException(ODataErrorStrings.MetadataBinder_InvalidIdentifierInQueryOption(tokenIn.Identifier));
}
// navigation property is not allowed to append sub path in the selection.
NavigationPropertySegment navPropSegment = pathSoFar.LastOrDefault() as NavigationPropertySegment;
if (navPropSegment != null && tokenIn.NextToken != null)
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
return(pathSoFar);
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>
/// Whether or not the expected formatting was found and succesfully removed.
/// </returns>
internal override bool TryRemoveFormatting(ref string text)
{
return(UriParserHelper.TryRemoveQuotes(ref text));
}
private bool TryUriStringToPrimitive(string text, IEdmTypeReference targetType, out object targetValue, out UriLiteralParsingException exception)
{
Debug.Assert(text != null, "text != null");
Debug.Assert(targetType != null, "targetType != null");
exception = null;
try
{
if (targetType.IsNullable)
{
// COMPAT 38: Product does not support "null" literals in service operation arguments
// check for the 'null' constant for nullable types
if (text == ExpressionConstants.KeywordNull)
{
targetValue = null;
return(true);
}
}
IEdmPrimitiveTypeReference primitiveTargetType = targetType.AsPrimitiveOrNull();
if (primitiveTargetType == null)
{
targetValue = null;
return(false);
}
EdmPrimitiveTypeKind targetTypeKind = primitiveTargetType.PrimitiveKind();
byte[] byteArrayValue;
bool binaryResult = TryUriStringToByteArray(text, out byteArrayValue);
if (targetTypeKind == EdmPrimitiveTypeKind.Binary)
{
targetValue = (object)byteArrayValue;
return(binaryResult);
}
else if (binaryResult)
{
string keyValue = Encoding.UTF8.GetString(byteArrayValue, 0, byteArrayValue.Length);
return(this.TryUriStringToPrimitive(keyValue, targetType, out targetValue));
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Guid)
{
Guid guidValue;
bool result = UriUtils.TryUriStringToGuid(text, out guidValue);
targetValue = guidValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Date)
{
Date dateValue;
bool result = UriUtils.TryUriStringToDate(text, out dateValue);
targetValue = dateValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.DateTimeOffset)
{
DateTimeOffset dateTimeOffsetValue;
bool result = UriUtils.ConvertUriStringToDateTimeOffset(text, out dateTimeOffsetValue);
targetValue = dateTimeOffsetValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Duration)
{
TimeSpan timespanValue;
bool result = TryUriStringToDuration(text, out timespanValue);
targetValue = timespanValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Geography)
{
Geography geographyValue;
bool result = TryUriStringToGeography(text, out geographyValue, out exception);
targetValue = geographyValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Geometry)
{
Geometry geometryValue;
bool result = TryUriStringToGeometry(text, out geometryValue, out exception);
targetValue = geometryValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.TimeOfDay)
{
TimeOfDay timeOfDayValue;
bool result = UriUtils.TryUriStringToTimeOfDay(text, out timeOfDayValue);
targetValue = timeOfDayValue;
return(result);
}
bool quoted = targetTypeKind == EdmPrimitiveTypeKind.String;
if (quoted != UriParserHelper.IsUriValueQuoted(text))
{
targetValue = null;
return(false);
}
if (quoted)
{
text = UriParserHelper.RemoveQuotes(text);
}
try
{
switch (targetTypeKind)
{
case EdmPrimitiveTypeKind.String:
targetValue = text;
break;
case EdmPrimitiveTypeKind.Boolean:
targetValue = XmlConvert.ToBoolean(text);
break;
case EdmPrimitiveTypeKind.Byte:
targetValue = XmlConvert.ToByte(text);
break;
case EdmPrimitiveTypeKind.SByte:
targetValue = XmlConvert.ToSByte(text);
break;
case EdmPrimitiveTypeKind.Int16:
targetValue = XmlConvert.ToInt16(text);
break;
case EdmPrimitiveTypeKind.Int32:
targetValue = XmlConvert.ToInt32(text);
break;
case EdmPrimitiveTypeKind.Int64:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixInt64, ref text);
targetValue = XmlConvert.ToInt64(text);
break;
case EdmPrimitiveTypeKind.Single:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixSingle, ref text);
targetValue = XmlConvert.ToSingle(text);
break;
case EdmPrimitiveTypeKind.Double:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixDouble, ref text);
targetValue = XmlConvert.ToDouble(text);
break;
case EdmPrimitiveTypeKind.Decimal:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixDecimal, ref text);
try
{
targetValue = XmlConvert.ToDecimal(text);
}
catch (FormatException)
{
// we need to support exponential format for decimals since we used to support them in V1
decimal result;
if (Decimal.TryParse(text, NumberStyles.Float, NumberFormatInfo.InvariantInfo, out result))
{
targetValue = result;
}
else
{
targetValue = default(Decimal);
return(false);
}
}
break;
default:
throw new ODataException(ODataErrorStrings.General_InternalError(InternalErrorCodes.UriPrimitiveTypeParser_TryUriStringToPrimitive));
}
return(true);
}
catch (FormatException)
{
targetValue = null;
return(false);
}
catch (OverflowException)
{
targetValue = null;
return(false);
}
}
catch (Exception primitiveParserException)
{
exception = new UriLiteralParsingException(
string.Format(CultureInfo.InvariantCulture, ODataErrorStrings.UriPrimitiveTypeParsers_FailedToParseTextToPrimitiveValue(text, targetType),
primitiveParserException));
targetValue = null;
return(false);
}
}
/// <summary>
/// Function to normalize quoted string, ensuring single quotes are escaped properly.
/// If the string is double-quoted, no op since single quote doesn't need to be escaped.
/// </summary>
/// <param name="str">The quoted string item to be normalized.</param>
/// <returns>The double-quoted string with single quotes properly escaped.</returns>
private static string NormalizeStringItem(string str)
{
// Validate the string item is quoted properly.
if (!((str[0] == '\'' && str[str.Length - 1] == '\'') || (str[0] == '"' && str[str.Length - 1] == '"')))
{
throw new ODataException(ODataErrorStrings.StringItemShouldBeQuoted(str));
}
// Skip conversion if the items are already in double-quote format (for backward compatibility).
// Note that per ABNF, query option strings should use single quotes.
string convertedString = str;
if (str[0] == '\'')
{
convertedString = String.Format(CultureInfo.InvariantCulture, "\"{0}\"", UriParserHelper.RemoveQuotes(str));
}
return(convertedString);
}
private void ProcessTokenAsPath(NonSystemToken tokenIn)
{
Debug.Assert(tokenIn != null, "tokenIn != null");
List <ODataPathSegment> pathSoFar = new List <ODataPathSegment>();
IEdmStructuredType currentLevelType = this.edmType;
// first, walk through all type segments in a row, converting them from tokens into segments.
if (tokenIn.IsNamespaceOrContainerQualified() && !UriParserHelper.IsAnnotation(tokenIn.Identifier))
{
PathSegmentToken firstNonTypeToken;
pathSoFar.AddRange(SelectExpandPathBinder.FollowTypeSegments(tokenIn, this.model, this.maxDepth, this.resolver, ref currentLevelType, out firstNonTypeToken));
Debug.Assert(firstNonTypeToken != null, "Did not get last token.");
tokenIn = firstNonTypeToken as NonSystemToken;
if (tokenIn == null)
{
throw new ODataException(ODataErrorStrings.SelectPropertyVisitor_SystemTokenInSelect(firstNonTypeToken.Identifier));
}
}
// next, create a segment for the first non-type segment in the path.
ODataPathSegment lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(tokenIn, this.model, currentLevelType, resolver, this.state);
// next, create an ODataPath and add the segments to it.
if (lastSegment != null)
{
pathSoFar.Add(lastSegment);
// try create a complex type property path.
while (true)
{
// no need to go on if the current property is not of complex type or collection of complex type,
// unless the segment is a primitive type cast or a property on an open complex property.
currentLevelType = lastSegment.EdmType as IEdmStructuredType;
IEdmCollectionType collectionType = lastSegment.EdmType as IEdmCollectionType;
IEdmPrimitiveType primitiveType = lastSegment.EdmType as IEdmPrimitiveType;
DynamicPathSegment dynamicPath = lastSegment as DynamicPathSegment;
if ((currentLevelType == null || currentLevelType.TypeKind != EdmTypeKind.Complex) &&
(collectionType == null || collectionType.ElementType.TypeKind() != EdmTypeKind.Complex) &&
(primitiveType == null || primitiveType.TypeKind != EdmTypeKind.Primitive) &&
(dynamicPath == null || tokenIn.NextToken == null))
{
break;
}
NonSystemToken nextToken = tokenIn.NextToken as NonSystemToken;
if (nextToken == null)
{
break;
}
if (UriParserHelper.IsAnnotation(nextToken.Identifier))
{
lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(nextToken, this.model,
currentLevelType, resolver, null);
}
else if (primitiveType == null && dynamicPath == null)
{
// This means last segment a collection of complex type,
// current segment can only be type cast and cannot be property name.
if (currentLevelType == null)
{
currentLevelType = collectionType.ElementType.Definition as IEdmStructuredType;
}
// If there is no collection type in the path yet, will try to bind property for the next token
// first try bind the segment as property.
lastSegment = SelectPathSegmentTokenBinder.ConvertNonTypeTokenToSegment(nextToken, this.model,
currentLevelType, resolver, null);
}
else
{
// determine whether we are looking at a type cast or a dynamic path segment.
EdmPrimitiveTypeKind nextTypeKind = EdmCoreModel.Instance.GetPrimitiveTypeKind(nextToken.Identifier);
IEdmPrimitiveType castType = EdmCoreModel.Instance.GetPrimitiveType(nextTypeKind);
if (castType != null)
{
lastSegment = new TypeSegment(castType, castType, null);
}
else if (dynamicPath != null)
{
lastSegment = new DynamicPathSegment(nextToken.Identifier);
}
else
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
}
// then try bind the segment as type cast.
if (lastSegment == null)
{
IEdmStructuredType typeFromNextToken =
UriEdmHelpers.FindTypeFromModel(this.model, nextToken.Identifier, this.resolver) as
IEdmStructuredType;
if (typeFromNextToken.IsOrInheritsFrom(currentLevelType))
{
lastSegment = new TypeSegment(typeFromNextToken, /*entitySet*/ null);
}
}
// type cast failed too.
if (lastSegment == null)
{
break;
}
// try move to and add next path segment.
tokenIn = nextToken;
pathSoFar.Add(lastSegment);
}
}
ODataSelectPath selectedPath = new ODataSelectPath(pathSoFar);
var selectionItem = new PathSelectItem(selectedPath);
// non-navigation cases do not allow further segments in $select.
if (tokenIn.NextToken != null)
{
throw new ODataException(ODataErrorStrings.SelectBinder_MultiLevelPathInSelect);
}
// if the selected item is a nav prop, then see if its already there before we add it.
NavigationPropertySegment trailingNavPropSegment = selectionItem.SelectedPath.LastSegment as NavigationPropertySegment;
if (trailingNavPropSegment != null)
{
if (this.expandClauseToDecorate.SelectedItems.Any(x => x is PathSelectItem &&
((PathSelectItem)x).SelectedPath.Equals(selectedPath)))
{
return;
}
}
this.expandClauseToDecorate.AddToSelectedItems(selectionItem);
}
