public String getNamespacePrefix(String uri) {
NamespaceContextIterator eachNamespace = getNamespaceContextNodes();
while (eachNamespace.hasNext()) {
org.w3c.dom.Attr namespaceDecl = eachNamespace.nextNamespaceAttr();
if (namespaceDecl.getNodeValue().equals(uri)) {
String candidatePrefix = namespaceDecl.getLocalName();
if ("xmlns".equals(candidatePrefix)) return "";
else return candidatePrefix;
}
}
// Find if any of the ancestors' name has this uri
org.w3c.dom.Node currentAncestor = this;
while (currentAncestor != null && !(currentAncestor instanceof Document)) {
if (uri.equals(currentAncestor.getNamespaceURI())) return currentAncestor.getPrefix();
currentAncestor = currentAncestor.getParentNode();
}
return null;
}
public String getNamespaceURI(String prefix) {
if ("xmlns".equals(prefix)) {
return XMLNS_URI;
}
if ("xml".equals(prefix)) {
return XML_URI;
}
if ("".equals(prefix)) {
org.w3c.dom.Node currentAncestor = this;
while (currentAncestor != null && !(currentAncestor instanceof Document)) {
if (currentAncestor instanceof ElementImpl) {
QName name = ((ElementImpl) currentAncestor).getElementQName();
/*
if (prefix.equals(name.getPrefix())) {
String uri = name.getNamespaceURI();
if ("".equals(uri)) {
return null;
}
else {
return uri;
}
}*/
if (((Element) currentAncestor).hasAttributeNS(XMLNS_URI, "xmlns")) {
String uri = ((Element) currentAncestor).getAttributeNS(XMLNS_URI, "xmlns");
if ("".equals(uri)) return null;
else {
return uri;
}
}
}
currentAncestor = currentAncestor.getParentNode();
}
} else if (prefix != null) {
// Find if there's an ancester whose name contains this prefix
org.w3c.dom.Node currentAncestor = this;
// String uri = currentAncestor.lookupNamespaceURI(prefix);
// return uri;
while (currentAncestor != null && !(currentAncestor instanceof Document)) {
/* if (prefix.equals(currentAncestor.getPrefix())) {
String uri = currentAncestor.getNamespaceURI();
// this is because the javadoc says getNamespaceURI() is not a computed value
// and URI for a non-empty prefix cannot be null
if (uri != null)
return uri;
}*/
// String uri = currentAncestor.lookupNamespaceURI(prefix);
// if (uri != null) {
// return uri;
// }
if (((Element) currentAncestor).hasAttributeNS(XMLNS_URI, prefix)) {
return ((Element) currentAncestor).getAttributeNS(XMLNS_URI, prefix);
}
currentAncestor = currentAncestor.getParentNode();
}
}
return null;
}