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@stepancheg
Created August 14, 2009 01:15
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How to convert Scala XML to JDK DOM
object XmlHelpers {
val docBuilder =
javax.xml.parsers.DocumentBuilderFactory.newInstance().newDocumentBuilder()
}
class NodeExtras(n: Node) {
def toJdkNode(doc: org.w3c.dom.Document): org.w3c.dom.Node =
n match {
case Elem(prefix, label, attributes, scope, children @ _*) =>
// XXX: ns
val r = doc.createElement(label)
for (a <- attributes) {
r.setAttribute(a.key, a.value.text)
}
for (c <- children) {
r.appendChild(c.toJdkNode(doc))
}
r
case Text(text) => doc.createTextNode(text)
case Comment(comment) => doc.createComment(comment)
// not sure
case a: Atom[_] => doc.createTextNode(a.data.toString)
// XXX: other types
//case x => throw new Exception(x.getClass.getName)
}
}
class ElemExtras(e: Elem) extends NodeExtras(e) {
override def toJdkNode(doc: org.w3c.dom.Document) =
super.toJdkNode(doc).asInstanceOf[org.w3c.dom.Element]
def toJdkDoc = {
val doc = XmlHelpers.docBuilder.newDocument()
doc.appendChild(toJdkNode(doc))
doc
}
}
implicit def nodeExtras(n: Node) = new NodeExtras(n)
implicit def elemExtras(e: Elem) = new ElemExtras(e)
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