private static void handleAfters(Http.Request request) throws Exception {
List<Method> afters =
Java.findAllAnnotatedMethods(Controller.getControllerClass(), After.class);
ControllerInstrumentation.stopActionCall();
for (Method after : afters) {
String[] unless = after.getAnnotation(After.class).unless();
String[] only = after.getAnnotation(After.class).only();
boolean skip = false;
for (String un : only) {
if (!un.contains(".")) {
un = after.getDeclaringClass().getName().substring(12) + "." + un;
}
if (un.equals(request.action)) {
skip = false;
break;
} else {
skip = true;
}
}
for (String un : unless) {
if (!un.contains(".")) {
un = after.getDeclaringClass().getName().substring(12) + "." + un;
}
if (un.equals(request.action)) {
skip = true;
break;
}
}
if (!skip) {
after.setAccessible(true);
inferResult(invokeControllerMethod(after));
}
}
}
private static void handleBefores(Http.Request request) throws Exception {
List<Method> befores =
Java.findAllAnnotatedMethods(Controller.getControllerClass(), Before.class);
Collections.sort(
befores,
new Comparator<Method>() {
public int compare(Method m1, Method m2) {
Before before1 = m1.getAnnotation(Before.class);
Before before2 = m2.getAnnotation(Before.class);
return before1.priority() - before2.priority();
}
});
ControllerInstrumentation.stopActionCall();
for (Method before : befores) {
String[] unless = before.getAnnotation(Before.class).unless();
String[] only = before.getAnnotation(Before.class).only();
boolean skip = false;
for (String un : only) {
if (!un.contains(".")) {
un = before.getDeclaringClass().getName().substring(12).replace("$", "") + "." + un;
}
if (un.equals(request.action)) {
skip = false;
break;
} else {
skip = true;
}
}
for (String un : unless) {
if (!un.contains(".")) {
un = before.getDeclaringClass().getName().substring(12).replace("$", "") + "." + un;
}
if (un.equals(request.action)) {
skip = true;
break;
}
}
if (!skip) {
before.setAccessible(true);
inferResult(invokeControllerMethod(before));
}
}
}
/**
* Checks and calla all methods in controller annotated with @Finally. The caughtException-value
* is sent as argument to @Finally-method if method has one argument which is Throwable
*
* @param request
* @param caughtException If @Finally-methods are called after an error, this variable holds the
* caught error
* @throws PlayException
*/
static void handleFinallies(Http.Request request, Throwable caughtException)
throws PlayException {
if (Controller.getControllerClass() == null) {
// skip it
return;
}
try {
List<Method> allFinally =
Java.findAllAnnotatedMethods(Controller.getControllerClass(), Finally.class);
ControllerInstrumentation.stopActionCall();
for (Method aFinally : allFinally) {
String[] unless = aFinally.getAnnotation(Finally.class).unless();
String[] only = aFinally.getAnnotation(Finally.class).only();
boolean skip = false;
for (String un : only) {
if (!un.contains(".")) {
un = aFinally.getDeclaringClass().getName().substring(12) + "." + un;
}
if (un.equals(request.action)) {
skip = false;
break;
} else {
skip = true;
}
}
for (String un : unless) {
if (!un.contains(".")) {
un = aFinally.getDeclaringClass().getName().substring(12) + "." + un;
}
if (un.equals(request.action)) {
skip = true;
break;
}
}
if (!skip) {
aFinally.setAccessible(true);
// check if method accepts Throwable as only parameter
Class[] parameterTypes = aFinally.getParameterTypes();
if (parameterTypes.length == 1 && parameterTypes[0] == Throwable.class) {
// invoking @Finally method with caughtException as
// parameter
invokeControllerMethod(aFinally, new Object[] {caughtException});
} else {
// invoce @Finally-method the regular way without
// caughtException
invokeControllerMethod(aFinally, null);
}
}
}
} catch (InvocationTargetException ex) {
StackTraceElement element =
PlayException.getInterestingStackTraceElement(ex.getTargetException());
if (element != null) {
throw new JavaExecutionException(
Play.classes.getApplicationClass(element.getClassName()),
element.getLineNumber(),
ex.getTargetException());
}
throw new JavaExecutionException(Http.Request.current().action, ex);
} catch (Exception e) {
throw new UnexpectedException("Exception while doing @Finally", e);
}
}
public static void invoke(Http.Request request, Http.Response response) {
Monitor monitor = null;
try {
resolve(request, response);
Method actionMethod = request.invokedMethod;
// 1. Prepare request params
Scope.Params.current().__mergeWith(request.routeArgs);
// add parameters from the URI query string
String encoding = Http.Request.current().encoding;
Scope.Params.current()
._mergeWith(
UrlEncodedParser.parseQueryString(
new ByteArrayInputStream(request.querystring.getBytes(encoding))));
// 2. Easy debugging ...
if (Play.mode == Play.Mode.DEV) {
Class<Controller> cclass = Controller.class;
cclass.getDeclaredField("params").set(null, Scope.Params.current());
cclass.getDeclaredField("request").set(null, Http.Request.current());
cclass.getDeclaredField("response").set(null, Http.Response.current());
cclass.getDeclaredField("session").set(null, Scope.Session.current());
cclass.getDeclaredField("flash").set(null, Scope.Flash.current());
cclass.getDeclaredField("renderArgs").set(null, Scope.RenderArgs.current());
cclass.getDeclaredField("routeArgs").set(null, Scope.RouteArgs.current());
cclass.getDeclaredField("validation").set(null, Validation.current());
}
ControllerInstrumentation.stopActionCall();
Play.pluginCollection.beforeActionInvocation(actionMethod);
// Monitoring
monitor = MonitorFactory.start(request.action + "()");
// 3. Invoke the action
try {
// @Before
handleBefores(request);
// Action
Result actionResult = null;
String cacheKey = null;
// Check the cache (only for GET or HEAD)
if ((request.method.equals("GET") || request.method.equals("HEAD"))
&& actionMethod.isAnnotationPresent(CacheFor.class)) {
cacheKey = actionMethod.getAnnotation(CacheFor.class).id();
if ("".equals(cacheKey)) {
cacheKey = "urlcache:" + request.url + request.querystring;
}
actionResult = (Result) play.cache.Cache.get(cacheKey);
}
if (actionResult == null) {
ControllerInstrumentation.initActionCall();
try {
inferResult(invokeControllerMethod(actionMethod));
} catch (Result result) {
actionResult = result;
// Cache it if needed
if (cacheKey != null) {
play.cache.Cache.set(
cacheKey, actionResult, actionMethod.getAnnotation(CacheFor.class).value());
}
} catch (InvocationTargetException ex) {
// It's a Result ? (expected)
if (ex.getTargetException() instanceof Result) {
actionResult = (Result) ex.getTargetException();
// Cache it if needed
if (cacheKey != null) {
play.cache.Cache.set(
cacheKey, actionResult, actionMethod.getAnnotation(CacheFor.class).value());
}
} else {
// @Catch
Object[] args = new Object[] {ex.getTargetException()};
List<Method> catches =
Java.findAllAnnotatedMethods(Controller.getControllerClass(), Catch.class);
ControllerInstrumentation.stopActionCall();
for (Method mCatch : catches) {
Class[] exceptions = mCatch.getAnnotation(Catch.class).value();
if (exceptions.length == 0) {
exceptions = new Class[] {Exception.class};
}
for (Class exception : exceptions) {
if (exception.isInstance(args[0])) {
mCatch.setAccessible(true);
inferResult(invokeControllerMethod(mCatch, args));
break;
}
}
}
throw ex;
}
}
}
// @After
handleAfters(request);
monitor.stop();
monitor = null;
// OK, re-throw the original action result
if (actionResult != null) {
throw actionResult;
}
throw new NoResult();
} catch (IllegalAccessException ex) {
throw ex;
} catch (IllegalArgumentException ex) {
throw ex;
} catch (InvocationTargetException ex) {
// It's a Result ? (expected)
if (ex.getTargetException() instanceof Result) {
throw (Result) ex.getTargetException();
}
// Re-throw the enclosed exception
if (ex.getTargetException() instanceof PlayException) {
throw (PlayException) ex.getTargetException();
}
StackTraceElement element =
PlayException.getInterestingStackTraceElement(ex.getTargetException());
if (element != null) {
throw new JavaExecutionException(
Play.classes.getApplicationClass(element.getClassName()),
element.getLineNumber(),
ex.getTargetException());
}
throw new JavaExecutionException(Http.Request.current().action, ex);
}
} catch (Result result) {
Play.pluginCollection.onActionInvocationResult(result);
// OK there is a result to apply
// Save session & flash scope now
Scope.Session.current().save();
Scope.Flash.current().save();
result.apply(request, response);
Play.pluginCollection.afterActionInvocation();
// @Finally
handleFinallies(request, null);
} catch (PlayException e) {
handleFinallies(request, e);
throw e;
} catch (Throwable e) {
handleFinallies(request, e);
throw new UnexpectedException(e);
} finally {
Play.pluginCollection.onActionInvocationFinally();
if (monitor != null) {
monitor.stop();
}
}
}