diff options
Diffstat (limited to 'Doc/lib')
| -rw-r--r-- | Doc/lib/xmldom.tex | 55 |
1 files changed, 32 insertions, 23 deletions
diff --git a/Doc/lib/xmldom.tex b/Doc/lib/xmldom.tex index bf4edac..46963d9 100644 --- a/Doc/lib/xmldom.tex +++ b/Doc/lib/xmldom.tex @@ -39,21 +39,25 @@ code. The DOM is a standard tree representation for XML data. The Document Object Model is being defined by the W3C in stages, or ``levels'' in their terminology. The Python mapping of the API is -substantially based on the DOM Level 2 recommendation. Some aspects -of the API will only become available in future Python releases, or -may only be available in particular DOM implementations. +substantially based on the DOM Level~2 recommendation. The mapping of +the Level~3 specification, currently only available in draft form, is +being developed by the \ulink{Python XML Special Interest +Group}{http://www.python.org/sigs/xml-sig/} as part of the +\ulink{PyXML package}{http://pyxml.sourceforge.net/}. Refer to the +documentation bundled with that package for information on the current +state of DOM Level~3 support. DOM applications typically start by parsing some XML into a DOM. How -this is accomplished is not covered at all by DOM Level 1, and Level 2 +this is accomplished is not covered at all by DOM Level~1, and Level~2 provides only limited improvements: There is a \class{DOMImplementation} object class which provides access to \class{Document} creation methods, but no way to access an XML reader/parser/Document builder in an implementation-independent way. There is also no well-defined way to access these methods without an existing \class{Document} object. In Python, each DOM implementation -will provide a function \function{getDOMImplementation}. DOM Level 3 +will provide a function \function{getDOMImplementation()}. DOM Level~3 adds a Load/Store specification, which defines an interface to the -reader, but this is not implemented in Python. +reader, but this is not yet available in the Python standard library. Once you have a DOM document object, you can access the parts of your XML document through its properties and methods. These properties are @@ -70,11 +74,11 @@ the strict mapping from IDL). See section \ref{dom-conformance}, \begin{seealso} \seetitle[http://www.w3.org/TR/DOM-Level-2-Core/]{Document Object - Model (DOM) Level 2 Specification} + Model (DOM) Level~2 Specification} {The W3C recommendation upon which the Python DOM API is based.} \seetitle[http://www.w3.org/TR/REC-DOM-Level-1/]{Document Object - Model (DOM) Level 1 Specification} + Model (DOM) Level~1 Specification} {The W3C recommendation for the DOM supported by \module{xml.dom.minidom}.} \seetitle[http://pyxml.sourceforge.net]{PyXML}{Users that require a @@ -137,7 +141,7 @@ Some convenience constants are also provided: \begin{datadesc}{XMLNS_NAMESPACE} The namespace URI for namespace declarations, as defined by \citetitle[http://www.w3.org/TR/DOM-Level-2-Core/core.html]{Document - Object Model (DOM) Level 2 Core Specification} (section~1.1.8). + Object Model (DOM) Level~2 Core Specification} (section~1.1.8). \versionadded{2.2} \end{datadesc} @@ -204,7 +208,7 @@ with the DOM in Python. The \class{DOMImplementation} interface provides a way for applications to determine the availability of particular features in -the DOM they are using. DOM Level 2 added the ability to create new +the DOM they are using. DOM Level~2 added the ability to create new \class{Document} and \class{DocumentType} objects using the \class{DOMImplementation} as well. @@ -319,11 +323,13 @@ This is especially useful for DOM implementations which use any sort of proxy architecture (because more than one object can refer to the same node). -\note{This is based on a proposed DOM Level 3 API which is -still in the ``working draft'' stage, but this particular interface -appears uncontroversial. Changes from the W3C will not necessarily -affect this method in the Python DOM interface (though any new W3C -API for this would also be supported).} +\begin{notice} + This is based on a proposed DOM Level~3 API which is still in the + ``working draft'' stage, but this particular interface appears + uncontroversial. Changes from the W3C will not necessarily affect + this method in the Python DOM interface (though any new W3C API for + this would also be supported). +\end{notice} \end{methoddesc} \begin{methoddesc}[Node]{appendChild}{newChild} @@ -372,7 +378,7 @@ the \method{getElementsByTagName()} and \method{getElementsByTagNameNS()} methods of \class{Node} return objects with this interface to represent query results. -The DOM Level 2 recommendation defines one method and one attribute +The DOM Level~2 recommendation defines one method and one attribute for these objects: \begin{methoddesc}[NodeList]{item}{i} @@ -667,12 +673,15 @@ child nodes. The content of the text node as a string. \end{memberdesc} -\note{The use of a \class{CDATASection} node does not -indicate that the node represents a complete CDATA marked section, -only that the content of the node was part of a CDATA section. A -single CDATA section may be represented by more than one node in the -document tree. There is no way to determine whether two adjacent -\class{CDATASection} nodes represent different CDATA marked sections.} +\begin{notice} + The use of a \class{CDATASection} node does not indicate that the + node represents a complete CDATA marked section, only that the + content of the node was part of a CDATA section. A single CDATA + section may be represented by more than one node in the document + tree. There is no way to determine whether two adjacent + \class{CDATASection} nodes represent different CDATA marked + sections. +\end{notice} \subsubsection{ProcessingInstruction Objects \label{dom-pi-objects}} @@ -695,7 +704,7 @@ whitespace character. \versionadded{2.1} -The DOM Level 2 recommendation defines a single exception, +The DOM Level~2 recommendation defines a single exception, \exception{DOMException}, and a number of constants that allow applications to determine what sort of error occurred. \exception{DOMException} instances carry a \member{code} attribute |