public TemplateModel get(String key) throws TemplateModelException {
if (size() == 1) {
NodeModel nm = (NodeModel) get(0);
return nm.get(key);
}
if (key.startsWith("@@")
&& (key.equals("@@markup") || key.equals("@@nested_markup") || key.equals("@@text"))) {
StringBuffer result = new StringBuffer();
for (int i = 0; i < size(); i++) {
NodeModel nm = (NodeModel) get(i);
TemplateScalarModel textModel = (TemplateScalarModel) nm.get(key);
result.append(textModel.getAsString());
}
return new SimpleScalar(result.toString());
}
if (StringUtil.isXMLID(key)
|| ((key.startsWith("@") && StringUtil.isXMLID(key.substring(1))))
|| key.equals("*")
|| key.equals("**")
|| key.equals("@@")
|| key.equals("@*")) {
NodeListModel result = new NodeListModel(contextNode);
for (int i = 0; i < size(); i++) {
NodeModel nm = (NodeModel) get(i);
if (nm instanceof ElementModel) {
TemplateSequenceModel tsm = (TemplateSequenceModel) ((ElementModel) nm).get(key);
if (tsm != null) {
int size = tsm.size();
for (int j = 0; j < size; j++) {
result.add(tsm.get(j));
}
}
}
}
if (result.size() == 1) {
return result.get(0);
}
return result;
}
XPathSupport xps = getXPathSupport();
if (xps != null) {
Object context = (size() == 0) ? null : rawNodeList();
return xps.executeQuery(context, key);
}
throw new TemplateModelException(
"Key: '"
+ key
+ "' is not legal for a node sequence ("
+ this.getClass().getName()
+ "). This node sequence contains "
+ size()
+ " node(s). "
+ "Some keys are valid only for node sequences of size 1. "
+ "If you use Xalan (instead of Jaxen), XPath expression keys work only with "
+ "node lists of size 1.");
}
public TemplateModel exec(List args) throws TemplateModelException {
if (args.size() != 1) {
throw new TemplateModelException("Expecting exactly one arguments");
}
String query = (String) args.get(0);
// Now, we try to behave as if this is an XPath expression
XPathSupport xps = getXPathSupport();
if (xps == null) {
throw new TemplateModelException("No XPath support available");
}
return xps.executeQuery(node, query);
}
public TemplateModel get(String key) throws TemplateModelException {
if (key.startsWith("@@")) {
if (key.equals("@@text")) {
return new SimpleScalar(getText(node));
}
if (key.equals("@@namespace")) {
String nsURI = node.getNamespaceURI();
return nsURI == null ? null : new SimpleScalar(nsURI);
}
if (key.equals("@@local_name")) {
String localName = node.getLocalName();
if (localName == null) {
localName = getNodeName();
}
return new SimpleScalar(localName);
}
if (key.equals("@@markup")) {
StringBuilder buf = new StringBuilder();
NodeOutputter nu = new NodeOutputter(node);
nu.outputContent(node, buf);
return new SimpleScalar(buf.toString());
}
if (key.equals("@@nested_markup")) {
StringBuilder buf = new StringBuilder();
NodeOutputter nu = new NodeOutputter(node);
nu.outputContent(node.getChildNodes(), buf);
return new SimpleScalar(buf.toString());
}
if (key.equals("@@qname")) {
String qname = getQualifiedName();
return qname == null ? null : new SimpleScalar(qname);
}
}
XPathSupport xps = getXPathSupport();
if (xps != null) {
return xps.executeQuery(node, key);
} else {
throw new TemplateModelException(
"Can't try to resolve the XML query key, because no XPath support is available. "
+ "It's either malformed or an XPath expression: "
+ key);
}
}
