DOM-ecmascript

Section: User Contributed Perl Documentation (3)
Updated: 1999-08-17
Index Return to Main Contents
 

XML::Grove and DOM Level One

XML::Grove is similar in concept to the ECMA Script Language Binding to DOM Level 1 Core (Appendix E of the DOM Recommendation).

<http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html>

The ECMA Script Language Binding presents DOM properties as ECMA Script object properties. The same is true for XML::Grove, XML::Grove presents DOM properties as Perl blessed hashes.

The biggest difference between the ECMA Script Language Binding and XML::Grove is that XML::Grove uses a Perl hash for nodes, Perl arrays for NodeLists, Perl hashes for NamedNodeLists so those object classes don't exist in XML::Grove. Because those classes don't exist, you use ordinary Perl syntax for manipulating the DOM properties (lists and named node lists) instead of methods like `"nextSibling()"' or `"replaceChild()"'. Element attributes in XML::Grove are stored in Perl hashes; attribute types are available through the document object.

Another difference is that XML::Grove attempts to marry the PerlSAX and DOM naming so that less (no?) name-changing occurs between using PerlSAX interfaces and filters and DOM modules. Where conflicts occur, the PerlSAX naming is used.

XML::Grove uses a blessed hash for nodes, so the node type is available using Perl's `"ref()"' instead of using a `"nodeType()"' method and all class names are prefixed with `"XML::Grove::"'.

The following object descriptions are the most basic and common provided by many PerlSAX parsers. PerlSAX parsers often provide additional properties or objects, refer to your PerlSAX parser documentation for details.  

Document Object Model Level 1 Core

 

Object XML::Grove::Document

Contents
The children of this object. This property is an array.
Entities
The entities declared in this document. This property is a hash of XML::Grove::Entity objects keyed by entity name.
Notations
The notations declared in this document. This property is a hash of XML::Grove::Notation objects keyed by notation name.
 

Object XML::Grove::Element

Name
The tag type name for this element. This property is a string.
Attributes
The attributes for this element. This property is a hash and it's hash values are strings (or arrays with some grove builders).
Contents
The children of this object. This property is an array of XML::Grove objects.
 

Object XML::Grove::Characters

Data
The text of the character data. This property is a string.
 

Object XML::Grove::Comment

Data
The text of the character data. This property is a string.
 

Object XML::Grove::CData

The "CData" object is called a "CDATASection" in DOM.
Data
The text of the character data. This property is a string.
 

Object XML::Grove::Notation

Name
The name of this notation. This property is a string.
SystemId
The system identifier of this notation. This property is a string.
PublicId
The public identifier of this notation. This property is a string.
 

Object XML::Grove::Entity

Name
The name of this entity. This property is a string.
SystemId
The system identifier of this notation. This property is a string.
PublicId
The public identifier of this notation. This property is a string.
Notation
The notation declared for this entity. This property is either the name of the notation as a string or an "XML::Grove::Notation" object.
 

Object XML::Grove::PI

The "PI" object is called a "ProcessingInstruction" in DOM.
Target
The target of the processing instruction. This property is a string.
Data
The text of the processing instruction. This property is a string.


 

Index

XML::Grove and DOM Level One
Document Object Model Level 1 Core
Object XML::Grove::Document
Object XML::Grove::Element
Object XML::Grove::Characters
Object XML::Grove::Comment
Object XML::Grove::CData
Object XML::Grove::Notation
Object XML::Grove::Entity
Object XML::Grove::PI

linux.jgfs.net manual pages