/**
* Get the default namespace associated with the supplied element.
*
* @param element The element to be checked.
* @return The default namespace, or null if none was found.
*/
public static String getDefaultNamespace(Element element) {
NamedNodeMap attributes = element.getAttributes();
int attributeCount = attributes.getLength();
for (int i = 0; i < attributeCount; i++) {
Attr attribute = (Attr) attributes.item(i);
if (XMLConstants.XMLNS_ATTRIBUTE.equals(attribute.getName())
&& XMLConstants.XMLNS_ATTRIBUTE.equals(attribute.getLocalName())) {
return attribute.getValue();
}
}
return null;
}
/** Declare a Namespace prefix. */
public boolean declarePrefix(String prefix, String uri) {
if (XMLConstants.XML_NS_PREFIX.equals(prefix) || XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) {
return false;
} else {
currentContext.declarePrefix(prefix, uri);
return true;
}
}
public QName(String namespaceURI, String localPart, String prefix) {
if (namespaceURI == null) namespaceURI = XMLConstants.NULL_NS_URI;
if (localPart == null) throw new IllegalArgumentException();
if (prefix == null) prefix = XMLConstants.DEFAULT_NS_PREFIX;
else {
if (XMLConstants.XML_NS_PREFIX.equals(prefix)) namespaceURI = XMLConstants.XML_NS_URI;
else if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix))
namespaceURI = XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
}
this.namespaceURI = namespaceURI;
this.localPart = localPart;
this.prefix = prefix;
}
protected static void addNamespace(Element element, Map<String, String> nsMap) {
for (String ns : nsMap.keySet()) {
// We should not override the namespace setting of the element
if (XMLConstants.XMLNS_ATTRIBUTE.equals(ns)) {
if (ObjectHelper.isEmpty(element.getAttribute(XMLConstants.XMLNS_ATTRIBUTE))) {
element.setAttribute(ns, nsMap.get(ns));
}
} else {
if (ObjectHelper.isEmpty(element.getAttribute(XMLConstants.XMLNS_ATTRIBUTE + ":" + ns))) {
element.setAttribute(XMLConstants.XMLNS_ATTRIBUTE + ":" + ns, nsMap.get(ns));
}
}
}
}
@Override
public String getNamespaceURI(String prefix) {
if (XMLConstants.DEFAULT_NS_PREFIX.equals(prefix)) {
if (defaultNamespaceURI == null) return XMLConstants.NULL_NS_URI;
else return defaultNamespaceURI;
} else if (XMLConstants.XML_NS_PREFIX.equals(prefix)) {
return XMLConstants.XML_NS_URI;
} else if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) {
return XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
} else if (prefix == null) {
throw new IllegalArgumentException("Null prefix not allowed");
} else {
String uri = idNamespacesMap.get(prefix);
if (uri == null) return XMLConstants.NULL_NS_URI;
else return uri;
}
}
/**
* @throws IOException
* @see {@link org.gvsig.bxml.stream.BxmlStreamWriter#writeNamespace(String, String)}
*/
@Override
public void writeNamespace(String prefix, String namespaceUri) throws IOException {
// @pre {getLastEvent() IN (START_ELEMENT, NAMESPACE_DECL)}
lastEvent = impl.getLastEvent();
assertPre(
lastEvent == EventType.NAMESPACE_DECL
|| lastEvent == START_ELEMENT
|| lastEvent == START_DOCUMENT,
"setPrefix: last event shall be either NAMESPACE_DECL, START_DOCUMENT or START_ELEMENT: ",
lastEvent);
assertPre(prefix != null, "setPrefix: prefix can't be null");
assertPre(namespaceUri != null, "setPrefix: namespaceUri can't be null");
impl.writeNamespace(prefix, namespaceUri);
String boundPrefix = impl.getPrefix(namespaceUri);
if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix)) {
assertPost(
null == boundPrefix,
"The 'xmlns' attribute should not be declared as prefix, but got it bound to ",
namespaceUri);
} else {
assertPost(
prefix.equals(boundPrefix),
"Expected prefix ",
prefix,
" to be bound to namespace ",
namespaceUri,
" but got ",
boundPrefix);
}
lastEvent = impl.getLastEvent();
assertPost(
lastEvent == NAMESPACE_DECL,
"expected last event to be NAMESPACE_DECL, but is ",
lastEvent);
}
