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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package nginx.unit.websocket.pojo;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import javax.websocket.DecodeException;
+import javax.websocket.MessageHandler;
+import javax.websocket.Session;
+
+import nginx.unit.websocket.WsSession;
+
+/**
+ * Common implementation code for the POJO whole message handlers. All the real
+ * work is done in this class and in the superclass.
+ *
+ * @param <T> The type of message to handle
+ */
+public abstract class PojoMessageHandlerWholeBase<T>
+ extends PojoMessageHandlerBase<T> implements MessageHandler.Whole<T> {
+
+ public PojoMessageHandlerWholeBase(Object pojo, Method method,
+ Session session, Object[] params, int indexPayload,
+ boolean convert, int indexSession, long maxMessageSize) {
+ super(pojo, method, session, params, indexPayload, convert,
+ indexSession, maxMessageSize);
+ }
+
+
+ @Override
+ public final void onMessage(T message) {
+
+ if (params.length == 1 && params[0] instanceof DecodeException) {
+ ((WsSession) session).getLocal().onError(session,
+ (DecodeException) params[0]);
+ return;
+ }
+
+ // Can this message be decoded?
+ Object payload;
+ try {
+ payload = decode(message);
+ } catch (DecodeException de) {
+ ((WsSession) session).getLocal().onError(session, de);
+ return;
+ }
+
+ if (payload == null) {
+ // Not decoded. Convert if required.
+ if (convert) {
+ payload = convert(message);
+ } else {
+ payload = message;
+ }
+ }
+
+ Object[] parameters = params.clone();
+ if (indexSession != -1) {
+ parameters[indexSession] = session;
+ }
+ parameters[indexPayload] = payload;
+
+ Object result = null;
+ try {
+ result = method.invoke(pojo, parameters);
+ } catch (IllegalAccessException | InvocationTargetException e) {
+ handlePojoMethodException(e);
+ }
+ processResult(result);
+ }
+
+ protected Object convert(T message) {
+ return message;
+ }
+
+
+ protected abstract Object decode(T message) throws DecodeException;
+ protected abstract void onClose();
+}