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.");
}
@Override
public Object exec(List arguments) throws TemplateModelException {
if (arguments.size() != 2) {
throw new TemplateModelException("getCharactersByGroup needs two arguments - page and group");
}
try {
Page page = (Page) DeepUnwrap.unwrap((TemplateModel) arguments.get(0));
TemplateScalarModel groupScalar = (TemplateScalarModel) arguments.get(1);
return objectWrapper.wrap(getCharactersByGroup(page, groupScalar.getAsString()));
} catch (ClassCastException e) {
throw new TemplateModelException("Error: Expecting Page and String arguments");
}
}
static String getString(TemplateScalarModel model, Expression expr, Environment env)
throws TemplateException {
String value = model.getAsString();
if (value == null) {
if (env.isClassicCompatible()) {
return "";
} else {
throw new TemplateException(expr + " evaluated to null string.", env);
}
}
return value;
}