@Override
public void beforeActionInvocation(Method actionMethod) {
try {
Validation.current.set(restore());
boolean verify = false;
for (Annotation[] annotations : actionMethod.getParameterAnnotations()) {
if (annotations.length > 0) {
verify = true;
break;
}
}
if (!verify) {
return;
}
List<ConstraintViolation> violations = new Validator().validateAction(actionMethod);
ArrayList<Error> errors = new ArrayList<Error>();
String[] paramNames = Java.parameterNames(actionMethod);
for (ConstraintViolation violation : violations) {
errors.add(
new Error(
paramNames[((MethodParameterContext) violation.getContext()).getParameterIndex()],
violation.getMessage(),
violation.getMessageVariables() == null
? new String[0]
: violation.getMessageVariables().values().toArray(new String[0])));
}
Validation.current.get().errors.addAll(errors);
} catch (Exception e) {
throw new UnexpectedException(e);
}
}
public static Object[] getActionMethodArgs(Method method, Object o) throws Exception {
String[] paramsNames = Java.parameterNames(method);
if (paramsNames == null && method.getParameterTypes().length > 0) {
throw new UnexpectedException("Parameter names not found for method " + method);
}
// Check if we have already performed the bind operation
Object[] rArgs = CachedBoundActionMethodArgs.current().retrieveActionMethodArgs(method);
if (rArgs != null) {
// We have already performed the binding-operation for this method
// in this request.
return rArgs;
}
rArgs = new Object[method.getParameterTypes().length];
for (int i = 0; i < method.getParameterTypes().length; i++) {
Class<?> type = method.getParameterTypes()[i];
Map<String, String[]> params = new HashMap<String, String[]>();
// In case of simple params, we don't want to parse the body.
if (type.equals(String.class) || Number.class.isAssignableFrom(type) || type.isPrimitive()) {
params.put(paramsNames[i], Scope.Params.current().getAll(paramsNames[i]));
} else {
params.putAll(Scope.Params.current().all());
}
Logger.trace(
"getActionMethodArgs name ["
+ paramsNames[i]
+ "] annotation ["
+ Utils.join(method.getParameterAnnotations()[i], " ")
+ "]");
RootParamNode root = ParamNode.convert(params);
rArgs[i] =
Binder.bind(
root,
paramsNames[i],
method.getParameterTypes()[i],
method.getGenericParameterTypes()[i],
method.getParameterAnnotations()[i],
new Binder.MethodAndParamInfo(o, method, i + 1));
}
CachedBoundActionMethodArgs.current().storeActionMethodArgs(method, rArgs);
return rArgs;
}
/**
* 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();
}