XML::DOM::DocumentFragment - phpMan

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XML::DOM::DocumentFragUser(Contributed Perl DocumXML::DOM::DocumentFragment(3)



NAME
       XML::DOM::DocumentFragment - Facilitates cut & paste in XML::DOM documents

DESCRIPTION
       XML::DOM::DocumentFragment extends XML::DOM::Node

       DocumentFragment is a "lightweight" or "minimal" Document object. It is very common
       to want to be able to extract a portion of a document’s tree or to create a new
       fragment of a document. Imagine implementing a user command like cut or rearranging
       a document by moving fragments around. It is desirable to have an object which can
       hold such fragments and it is quite natural to use a Node for this purpose. While
       it is true that a Document object could fulfil this role, a Document object can
       potentially be a heavyweight object, depending on the underlying implementation.
       What is really needed for this is a very lightweight object. DocumentFragment is
       such an object.

       Furthermore, various operations -- such as inserting nodes as children of another
       Node -- may take DocumentFragment objects as arguments; this results in all the
       child nodes of the DocumentFragment being moved to the child list of this node.

       The children of a DocumentFragment node are zero or more nodes representing the
       tops of any sub-trees defining the structure of the document. DocumentFragment
       nodes do not need to be well-formed XML documents (although they do need to follow
       the rules imposed upon well-formed XML parsed entities, which can have multiple top
       nodes).  For example, a DocumentFragment might have only one child and that child
       node could be a Text node. Such a structure model represents neither an HTML docu-
       ment nor a well-formed XML document.

       When a DocumentFragment is inserted into a Document (or indeed any other Node that
       may take children) the children of the DocumentFragment and not the DocumentFrag-
       ment itself are inserted into the Node. This makes the DocumentFragment very useful
       when the user wishes to create nodes that are siblings; the DocumentFragment acts
       as the parent of these nodes so that the user can use the standard methods from the
       Node interface, such as insertBefore() and appendChild().



perl v5.8.5                       2000-01-31     XML::DOM::DocumentFragment(3)

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