@Override
public Object invokeMethod(String name, Object param) {
try {
if (controller == null) {
controller = Request.current().controller;
}
String action = controller + "." + name;
if (action.endsWith(".call")) {
action = action.substring(0, action.length() - 5);
}
try {
Map<String, Object> r = new HashMap<String, Object>();
Method actionMethod = (Method) ActionInvoker.getActionMethod(action)[1];
String[] names = (String[]) actionMethod.getDeclaringClass().getDeclaredField("$" + actionMethod.getName() + LocalVariablesNamesTracer.computeMethodHash(actionMethod.getParameterTypes())).get(null);
if (param instanceof Object[]) {
// too many parameters versus action, possibly a developer error. we must warn him.
if (names.length < ((Object[]) param).length) {
throw new NoRouteFoundException(action, null);
}
for (int i = 0; i < ((Object[]) param).length; i++) {
if (((Object[]) param)[i] instanceof Router.ActionDefinition && ((Object[]) param)[i] != null) {
Unbinder.unBind(r, ((Object[]) param)[i].toString(), i < names.length ? names[i] : "");
} else if (isSimpleParam(actionMethod.getParameterTypes()[i])) {
if (((Object[]) param)[i] != null) {
Unbinder.unBind(r, ((Object[]) param)[i].toString(), i < names.length ? names[i] : "");
}
} else {
Unbinder.unBind(r, ((Object[]) param)[i], i < names.length ? names[i] : "");
}
}
}
Router.ActionDefinition def = Router.reverse(action, r);
if (absolute) {
def.absolute();
}
if (template.template.name.endsWith(".html") || template.template.name.endsWith(".xml")) {
def.url = def.url.replace("&", "&");
}
return def;
} catch (ActionNotFoundException e) {
throw new NoRouteFoundException(action, null);
}
} catch (Exception e) {
if (e instanceof PlayException) {
throw (PlayException) e;
}
throw new UnexpectedException(e);
}
}
/**
* Parses the playframework action expressions. The string inside "()" is evaluated by OGNL in the
* current context.
*
* @param arguments
* @param attributeValue e.g. "Application.show(obj.id)"
* @return parsed action path
*/
@SuppressWarnings("unchecked")
static String toActionString(final Arguments arguments, String attributeValue) {
Matcher matcher = PARAM_PATTERN.matcher(attributeValue);
if (!matcher.matches()) {
return Router.reverse(attributeValue).toString();
}
String exp = matcher.group(1);
if (StringUtils.isBlank(exp)) {
return Router.reverse(attributeValue).toString();
}
Object obj =
PlayOgnlVariableExpressionEvaluator.INSTANCE.evaluate(
arguments.getConfiguration(), arguments, exp, false);
if (obj instanceof Map) {
return Router.reverse(attributeValue, (Map<String, Object>) obj).toString();
}
List<?> list = obj instanceof List ? (List<?>) obj : Arrays.asList(obj);
Map<String, Object> paramMap = new HashMap<String, Object>();
String extracted = StringUtils.substringBefore(attributeValue, "(");
if (!extracted.contains(".")) {
extracted = Request.current().controller + "." + extracted;
}
Object[] actionMethods = ActionInvoker.getActionMethod(extracted);
String[] paramNames = null;
try {
paramNames = Java.parameterNames((Method) actionMethods[1]);
} catch (Exception e) {
throw new RuntimeException(e);
}
if (paramNames.length < list.size()) {
Logger.warn("param length unmatched. %s", Arrays.toString(paramNames));
throw new ActionNotFoundException(attributeValue, null);
}
for (int i = 0; i < list.size(); i++) {
paramMap.put(paramNames[i], list.get(i));
}
return Router.reverse(extracted, paramMap).toString();
}