C# 클래스 HandCoded.Xml.NodeIndex

The NodeIndex class builds an index of the elements that comprise a DOM tree to allow subsequent queries to be efficiently executed.

A typical DOM document instance performs an expensive in-order traversal of the DOM tree every time the GetElementsByName method is called. This class does a one off traversal on construction and then uses the cached results to return XmlNodeList instances.

The NodeIndex also indexes 'id' attributes as the DOM has been found to be unreliable at indexing these during post parse schema validation.

Since TFP 1.2 the NodeIndex also attempts to capture schema type information for the XmlDocument as it explores it. Derivation relationships between types are determined and cached as calls to GetElementsByType are made.

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공개 메소드들

메소드	설명
GetAttributesByName ( string name ) : XmlNodeList	Creates a (possibly empty) XmlNodeList containing all the attribute nodes identified by the given name string.
GetElementById ( string id ) : XmlElement	Returns the XmlElement in the indexed document that has an id attribute with the given value.
GetElementsByName ( string name ) : XmlNodeList	Creates a (possibly empty) XmlNodeList containing all the element nodes identified by the given name string.
GetElementsByType ( string ns, string type ) : XmlNodeList	Creates a (possibly empty) XmlNodeList containing all the element nodes of a given type (or a derived subtype).
NodeIndex ( XmlDocument document ) : System	Constructs a NodeIndex for the given XmlDocument.

비공개 메소드들

메소드	설명
IndexNodes ( XmlNode node ) : void	Recursively walks a DOM tree creating an index of the elements by thier local name.
IsDerived ( XmlQualifiedName name, XmlSchemaType type ) : bool	Walks up the type inheritance structure to determine if the indicated XmlSchemaType is derived from the named type.

메소드 상세

GetAttributesByName() 공개 메소드

Creates a (possibly empty) XmlNodeList containing all the attribute nodes identified by the given name string.

public GetAttributesByName ( string name ) : XmlNodeList
name	string	The name of the required elements.
리턴	System.Xml.XmlNodeList

GetElementById() 공개 메소드

Returns the XmlElement in the indexed document that has an id attribute with the given value.

public GetElementById ( string id ) : XmlElement
id	string	The required id attribute value.
리턴	System.Xml.XmlElement

GetElementsByName() 공개 메소드

Creates a (possibly empty) XmlNodeList containing all the element nodes identified by the given name string.

public GetElementsByName ( string name ) : XmlNodeList
name	string	The name of the required elements.
리턴	System.Xml.XmlNodeList

GetElementsByType() 공개 메소드

Creates a (possibly empty) XmlNodeList containing all the element nodes of a given type (or a derived subtype).

public GetElementsByType ( string ns, string type ) : XmlNodeList
ns	string	The required namespace URI.
type	string	The required type.
리턴	System.Xml.XmlNodeList

NodeIndex() 공개 메소드

Constructs a NodeIndex for the given XmlDocument.

public NodeIndex ( XmlDocument document ) : System
document	System.Xml.XmlDocument	The to be indexed.
리턴	System