XML::DOM::DocumentFragment - phpMan

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 document 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 DocumentFragment 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().