Class XmlSpecsHelper

Static Helper Class which contains a set of Functions which model Name and Character validations as laid out in the W3C XML and XML Namespaces specification.

Inheritance

object

XmlSpecsHelper

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Parsing

Assembly: dotNetRdf.dll

Syntax

public static class XmlSpecsHelper

Remarks

These are needed in the XML/RDF Parser

Also contains the Date Time format string used to format .Net's DateTime type into a String whose format conforms to the XML Schema Datatypes specification.

Fields

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NamespaceXml

Namespace for XML.

Declaration

public const string NamespaceXml = "http://www.w3.org/XML/1998/namespace"

Field Value

Type	Description
string

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NamespaceXmlNamespaces

Namespace for XML Namespaces.

Declaration

public const string NamespaceXmlNamespaces = "http://www.w3.org/2000/xmlns/"

Field Value

Type	Description
string

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NamespaceXmlSchema

Namespace for XML Schema.

Declaration

public const string NamespaceXmlSchema = "http://www.w3.org/2001/XMLSchema#"

Field Value

Type	Description
string

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SupportedTypes

Array of Constants for Data Types that are supported by the Literal Node CompareTo method.

Declaration

public static string[] SupportedTypes

Field Value

Type	Description
string[]

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XmlSchemaDataTypeAnyUri

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeAnyUri = "http://www.w3.org/2001/XMLSchema#anyURI"

Field Value

Type	Description
string

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XmlSchemaDataTypeBase64Binary

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeBase64Binary = "http://www.w3.org/2001/XMLSchema#base64Binary"

Field Value

Type	Description
string

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XmlSchemaDataTypeBoolean

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeBoolean = "http://www.w3.org/2001/XMLSchema#boolean"

Field Value

Type	Description
string

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XmlSchemaDataTypeByte

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeByte = "http://www.w3.org/2001/XMLSchema#byte"

Field Value

Type	Description
string

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XmlSchemaDataTypeDate

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDate = "http://www.w3.org/2001/XMLSchema#date"

Field Value

Type	Description
string

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XmlSchemaDataTypeDateTime

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDateTime = "http://www.w3.org/2001/XMLSchema#dateTime"

Field Value

Type	Description
string

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XmlSchemaDataTypeDayTimeDuration

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDayTimeDuration = "http://www.w3.org/2001/XMLSchema#dayTimeDuration"

Field Value

Type	Description
string

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XmlSchemaDataTypeDecimal

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDecimal = "http://www.w3.org/2001/XMLSchema#decimal"

Field Value

Type	Description
string

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XmlSchemaDataTypeDouble

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDouble = "http://www.w3.org/2001/XMLSchema#double"

Field Value

Type	Description
string

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XmlSchemaDataTypeDuration

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeDuration = "http://www.w3.org/2001/XMLSchema#duration"

Field Value

Type	Description
string

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XmlSchemaDataTypeFloat

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeFloat = "http://www.w3.org/2001/XMLSchema#float"

Field Value

Type	Description
string

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XmlSchemaDataTypeHexBinary

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeHexBinary = "http://www.w3.org/2001/XMLSchema#hexBinary"

Field Value

Type	Description
string

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XmlSchemaDataTypeInt

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeInt = "http://www.w3.org/2001/XMLSchema#int"

Field Value

Type	Description
string

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XmlSchemaDataTypeInteger

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeInteger = "http://www.w3.org/2001/XMLSchema#integer"

Field Value

Type	Description
string

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XmlSchemaDataTypeLong

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeLong = "http://www.w3.org/2001/XMLSchema#long"

Field Value

Type	Description
string

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XmlSchemaDataTypeNegativeInteger

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeNegativeInteger = "http://www.w3.org/2001/XMLSchema#negativeInteger"

Field Value

Type	Description
string

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XmlSchemaDataTypeNonNegativeInteger

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeNonNegativeInteger = "http://www.w3.org/2001/XMLSchema#nonNegativeInteger"

Field Value

Type	Description
string

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XmlSchemaDataTypeNonPositiveInteger

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeNonPositiveInteger = "http://www.w3.org/2001/XMLSchema#nonPositiveInteger"

Field Value

Type	Description
string

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XmlSchemaDataTypePositiveInteger

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypePositiveInteger = "http://www.w3.org/2001/XMLSchema#positiveInteger"

Field Value

Type	Description
string

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XmlSchemaDataTypeShort

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeShort = "http://www.w3.org/2001/XMLSchema#short"

Field Value

Type	Description
string

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XmlSchemaDataTypeString

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeString = "http://www.w3.org/2001/XMLSchema#string"

Field Value

Type	Description
string

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XmlSchemaDataTypeTime

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeTime = "http://www.w3.org/2001/XMLSchema#time"

Field Value

Type	Description
string

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XmlSchemaDataTypeUnsignedByte

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeUnsignedByte = "http://www.w3.org/2001/XMLSchema#unsignedByte"

Field Value

Type	Description
string

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XmlSchemaDataTypeUnsignedInt

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeUnsignedInt = "http://www.w3.org/2001/XMLSchema#unsignedInt"

Field Value

Type	Description
string

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XmlSchemaDataTypeUnsignedLong

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeUnsignedLong = "http://www.w3.org/2001/XMLSchema#unsignedLong"

Field Value

Type	Description
string

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XmlSchemaDataTypeUnsignedShort

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeUnsignedShort = "http://www.w3.org/2001/XMLSchema#unsignedShort"

Field Value

Type	Description
string

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XmlSchemaDataTypeYear

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeYear = "http://www.w3.org/2001/XMLSchema#gYear"

Field Value

Type	Description
string

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XmlSchemaDataTypeYearMonth

Data Type Uri Constants for XML Schema Data Types.

Declaration

public const string XmlSchemaDataTypeYearMonth = "http://www.w3.org/2001/XMLSchema#gYearMonth"

Field Value

Type	Description
string

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XmlSchemaDateFormat

Date Time Formatting string which meets the specified format for xsd:date.

Declaration

public const string XmlSchemaDateFormat = "yyyy-MM-ddK"

Field Value

Type	Description
string

Remarks

Use with the DateTime.ToString() method to format a DateTime into appropriate string format.

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XmlSchemaDateRegex

A permissive regular expression that matches the structure of xsd:date.

Declaration

public static Regex XmlSchemaDateRegex

Field Value

Type	Description
Regex

Remarks

This regular expression does not catch out-of-range errors on any of the date components.

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XmlSchemaDateTimeFormat

Date Time Formatting string which meets the specified format for xsd:dateTime.

Declaration

public const string XmlSchemaDateTimeFormat = "yyyy-MM-dd\\THH:mm:ss.ffffffK"

Field Value

Type	Description
string

Remarks

Use with the DateTime.ToString() method to format a DateTime into appropriate string format.

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XmlSchemaDateTimeFormatImprecise

Date Time Formatting string which meets the specified format for xsd:dateTime, this formatting string is imprecise in the sense that it does not preserve the fractional seconds.

Declaration

public const string XmlSchemaDateTimeFormatImprecise = "yyyy-MM-dd\\THH:mm:ssK"

Field Value

Type	Description
string

Remarks

Use with the DateTime.ToString() method to format a DateTime into appropriate string format.

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XmlSchemaDateTimeRegex

A permissive regular expression that matches the structure of xsd:dateTime.

Declaration

public static Regex XmlSchemaDateTimeRegex

Field Value

Type	Description
Regex

Remarks

This regular expression does not catch out-of-range errors on any of the date or time components.

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XmlSchemaDurationRegex

A permissive regular expression that matches the structure of the lexical space for an XML Schema Duration.

Declaration

public static Regex XmlSchemaDurationRegex

Field Value

Type	Description
Regex

Remarks

This regular expression will match certain invalid constructs, in particular a duration with a T followed by no time components.

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XmlSchemaTimeFormat

Date Time Formatting string which meets the the specified format for xsd:time.

Declaration

public const string XmlSchemaTimeFormat = "HH:mm:ss.ffffffK"

Field Value

Type	Description
string

Remarks

Use with the DateTime.ToString() method to format a DateTime into appropriate string format.

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XmlSchemaTimeFormatImprecise

Date Time Formatting string which meets the the specified format for xsd:time, this formatting string is imprecise in the sense that it does not preserve the fractional seconds.

Declaration

public const string XmlSchemaTimeFormatImprecise = "HH:mm:ssK"

Field Value

Type	Description
string

Remarks

Use with the DateTime.ToString() method to format a DateTime into appropriate string format.

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XmlSchemaTimeRegex

A permissive regular expression that matches the structure of xsd:time.

Declaration

public static Regex XmlSchemaTimeRegex

Field Value

Type	Description
Regex

Remarks

This regular expression does not catch out-of-range errors on any of the time components.

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XmlSchemaYearMonthRegex

A permissive regular expression that matches the structure of xsd:gMonthYear.

Declaration

public static Regex XmlSchemaYearMonthRegex

Field Value

Type	Description
Regex

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XmlSchemaYearRegex

A permissive regular expression that matches the structure of xsd:gYear.

Declaration

public static Regex XmlSchemaYearRegex

Field Value

Type	Description
Regex

Methods

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GetCompatibleSupportedDataType(string, string)

Gets the Compatible Supported Data Type for the two Data Types.

Declaration

public static string GetCompatibleSupportedDataType(string type1, string type2)

Parameters

Type	Name	Description
string	type1	A Data Type.
string	type2	A Data Type.

Returns

Type	Description
string

Remarks

Currently this is only immplemented sufficiently for the types it needs to know are compatible for implementing SPARQL equality and ordering semantics.

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GetCompatibleSupportedDataType(string, string, bool)

Gets the Compatible Supported Data Type for the two Data Types.

Declaration

public static string GetCompatibleSupportedDataType(string type1, string type2, bool widen)

Parameters

Type	Name	Description
string	type1	A Data Type.
string	type2	A Data Type.
bool	widen	Whether the compatible type should be the wider type.

Returns

Type	Description
string

Remarks

Currently this is only immplemented sufficiently for the types it needs to know are compatible for implementing SPARQL equality and ordering semantics.

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GetCompatibleSupportedDataType(INode, INode)

Gets the Compatible Supported Data Type assuming the two Nodes are Literals with support types and that those types are compatible.

Declaration

public static string GetCompatibleSupportedDataType(INode x, INode y)

Parameters

Type	Name	Description
INode	x	A Node.
INode	y	A Node.

Returns

Type	Description
string

Remarks

Currently this is only immplemented sufficiently for the types it needs to know are compatible for implementing SPARQL equality and ordering semantics.

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GetCompatibleSupportedDataType(INode, INode, bool)

Gets the Compatible Supported Data Type assuming the two Nodes are Literals with support types and that those types are compatible.

Declaration

public static string GetCompatibleSupportedDataType(INode x, INode y, bool widen)

Parameters

Type	Name	Description
INode	x	A Node.
INode	y	A Node.
bool	widen	Whether the compatible type should be the wider type.

Returns

Type	Description
string

Remarks

Currently this is only immplemented sufficiently for the types it needs to know are compatible for implementing SPARQL equality and ordering semantics.

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GetSupportedDataType(INode)

Gets the Data Type Uri of the given Node if it has a supported type.

Declaration

public static string GetSupportedDataType(INode n)

Parameters

Type	Name	Description
INode	n	Node.

Returns

Type	Description
string

Remarks

Only ILiteralNode's can have a Data Type.

The function only returns the Data Type Uri (as a String) if the Data Type of the Literal is one of the supported Data Types.

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IsNCName(string)

Returns whether a String is a NCName as defined by the W3C XML Namespaces Specification.

Declaration

public static bool IsNCName(string name)

Parameters

Type	Name	Description
string	name	String to test.

Returns

Type	Description
bool

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IsName(string)

Returns whether a String is a Name as defined by the W3C XML Specification.

Declaration

public static bool IsName(string name)

Parameters

Type	Name	Description
string	name	String to test.

Returns

Type	Description
bool

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IsNameChar(char)

Returns whether a Character is a NameChar as defined by the W3C XML Specification.

Declaration

public static bool IsNameChar(char c)

Parameters

Type	Name	Description
char	c	Character to Test.

Returns

Type	Description
bool

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IsNameStartChar(char)

Returns whether a Character is a NameChar as defined by the W3C XML Specification.

Declaration

public static bool IsNameStartChar(char c)

Parameters

Type	Name	Description
char	c	Character to test.

Returns

Type	Description
bool

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IsSupportedType(string)

Returns whether the given Type refers to one of the types supported by the LiteralNode CompareTo method.

Declaration

public static bool IsSupportedType(string type)

Parameters

Type	Name	Description
string	type	Data Type Uri.

Returns

Type	Description
bool

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IsSupportedType(Uri)

Returns whether the given Type refers to one of the types supported by the LiteralNode CompareTo method.

Declaration

public static bool IsSupportedType(Uri type)

Parameters

Type	Name	Description
Uri	type	Data Type Uri.

Returns

Type	Description
bool

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TryGetCompatibleSupportedDataType(string, string, bool, out string)

Attempts to get the compatible datatype for the two specified data types.

Declaration

public static bool TryGetCompatibleSupportedDataType(string type1, string type2, bool widen, out string compatibleDataType)

Parameters

Type	Name	Description
string	type1	A data type IRI string.
string	type2	A data type IRI string.
bool	widen	Whether the compatible data type should be the wider type.
string	compatibleDataType	Receives the IRI of the compatible data type, if any.

Returns

Type	Description
bool	True if a compatible datatype could be found for the two data types, false otherwise.

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TryGetCompatibleSupportedDataType(string, string, out string)

Attempts to get the compatible datatype for the two specified data types.

Declaration

public static bool TryGetCompatibleSupportedDataType(string type1, string type2, out string compatibleDataType)

Parameters

Type	Name	Description
string	type1	A data type IRI string.
string	type2	A data type IRI string.
string	compatibleDataType	Receives the IRI of the compatible data type, if any.

Returns

Type	Description
bool	True if a compatible datatype could be found for the two data types, false otherwise.