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\name{asXMLTreeNode}
\alias{asXMLTreeNode}
\title{Convert a regular XML node to one for use in a "flat" tree}
\description{
This coerces a regular R-based XML node (i.e. not an internal C-level
node) to a form that can be inserted into a flat tree, i.e.
one that stores the nodes in a non-hierarchical manner.
It is thus used in conjunction with
\code{\link{xmlHashTree}}
%% and \code{\link{xmlFlatListTree}}.
It adds \code{id} and \code{env} fields to the
node and specializes the class by prefixing \code{className}
to the class attribute.
This is not used very much anymore as we use the internal nodes for
most purposes.
}
\usage{
asXMLTreeNode(node, env, id = get(".nodeIdGenerator", env)(xmlName(node)),
className = "XMLTreeNode")
}
%- maybe also 'usage' for other objects documented here.
\arguments{
\item{node}{the original XML node}
\item{env}{the \code{XMLFlatTree} object into which this node will be inserted.}
\item{id}{the identifier for the node in the flat tree. If this is not
specified, we consult the tree itself and its built-in identifier
generator. By default, the name of the node is used as its
identifier unless there is another node with that name.
}
\item{className}{a vector of class names to be prefixed to the
existing class vector of the node.}
}
\value{
An object of class \code{className}, i.e. by default
\code{"XMLTreeNode"}.
}
\references{\url{https://www.w3.org/XML/}}
\author{ Duncan Temple Lang }
\seealso{
\code{\link{xmlHashTree}}
%% \code{\link{xmlFlatListTree}}
}
\examples{
txt = '<foo a="123" b="an attribute"><bar>some text</bar>other text</foo>'
doc = xmlTreeParse(txt)
class(xmlRoot(doc))
as(xmlRoot(doc), "XMLInternalNode")
}
\keyword{IO}
\concept{XML}
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