From f8a620d1ff2b0d33b08a22279058f3e0253bdde1 Mon Sep 17 00:00:00 2001 From: Guo Ruijing Date: Fri, 28 Jul 2017 08:21:14 +0000 Subject: [POLICY-71] replace openecomp for policy-common Change-Id: I3241f5d1f0234043b4dff718eda1ffdc48052276 Signed-off-by: Guo Ruijing Signed-off-by: Pamela Dragosh --- .../onap/policy/common/im/StateChangeNotifier.java | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 integrity-monitor/src/main/java/org/onap/policy/common/im/StateChangeNotifier.java (limited to 'integrity-monitor/src/main/java/org/onap/policy/common/im/StateChangeNotifier.java') diff --git a/integrity-monitor/src/main/java/org/onap/policy/common/im/StateChangeNotifier.java b/integrity-monitor/src/main/java/org/onap/policy/common/im/StateChangeNotifier.java new file mode 100644 index 00000000..ee148159 --- /dev/null +++ b/integrity-monitor/src/main/java/org/onap/policy/common/im/StateChangeNotifier.java @@ -0,0 +1,76 @@ +/*- + * ============LICENSE_START======================================================= + * Integrity Monitor + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * Licensed 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. + * ============LICENSE_END========================================================= + */ + +package org.onap.policy.common.im; + +import java.util.Observable; +import java.util.Observer; +/* + * This is implementing the Observer interface to make it specific for + * state management. + * + * It saves the StateManagement object and a String message that is + * passed in when notifyObservers is called by the Observable + * host class. + * + * It provides an abstract method for handling the state change + * so this class must be overwritten and made concrete for the + * Observer who is monitoring the state changes. + */ + +//import org.apache.log4j.Logger; +import org.onap.policy.common.logging.flexlogger.FlexLogger; +import org.onap.policy.common.logging.flexlogger.Logger; + +/** + * + * StateChangeNotifier class implements the Observer pattern and is used to distribute + * state change notifications to any entity that registers a derived class with an + * instance of the StateManagement class. + * + */ +public class StateChangeNotifier implements Observer { + private static final Logger logger = FlexLogger.getLogger(StateChangeNotifier.class); + //The observable class + StateManagement stateManagement; + + // A string argument passed by the observable class when + // Observable:notifyObservers(Object arg) is called + String message; + + @Override + public void update(Observable o, Object arg) { + this.stateManagement = (StateManagement) o; + this.message = (String) arg; + handleStateChange(); + } + + public void handleStateChange() { + logger.debug("handleStateChange, message: " + this.message); + } + + public StateManagement getStateManagement() { + return stateManagement; + } + + public String getMessage() { + return message; + } +} \ No newline at end of file -- cgit 1.2.3-korg