Prepare drools-pdp for java 11

The Observer class has been deprecated.  Changed the code to use
StateChangeNotifier, instead, in anticipation of a corresponding
change in policy/common.
Also fixed new issue with missing getSupportedPolicyTypes() method.

Issue-ID: POLICY-1406
Signed-off-by: Jim Hahn <jrh3@att.com>
Change-Id: I2d3ee29f13bd12a2e16644a1746f066c91c05475

3 files changed, 6 insertions, 11 deletions

diff --git a/api-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeatureApi.java b/api-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeatureApi.java
index bdac688e..c267968c 100644
--- a/api-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeatureApi.java
+++ b/api-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeatureApi.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * policy-core
  * ================================================================================
- * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2020 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.
@@ -20,10 +20,10 @@
 
 package org.onap.policy.drools.statemanagement;
 
-import java.util.Observer;
 import javax.validation.constraints.NotNull;
 import org.onap.policy.common.capabilities.Lockable;
 import org.onap.policy.common.im.AllSeemsWellException;
+import org.onap.policy.common.im.StateChangeNotifier;
 import org.onap.policy.common.utils.services.OrderedService;
 
 /**
@@ -61,7 +61,7 @@ public interface StateManagementFeatureApi extends OrderedService, Lockable {
      *
      * @param stateChangeObserver observer
      */
-    void addObserver(Observer stateChangeObserver);
+    void addObserver(StateChangeNotifier stateChangeObserver);
 
     /**
      * Returns the X.731 Administrative State for this resource.
diff --git a/feature-lifecycle/src/test/java/org/onap/policy/drools/lifecycle/LifecycleStateRunningTest.java b/feature-lifecycle/src/test/java/org/onap/policy/drools/lifecycle/LifecycleStateRunningTest.java
index fe3566db..06fd08ca 100644
--- a/feature-lifecycle/src/test/java/org/onap/policy/drools/lifecycle/LifecycleStateRunningTest.java
+++ b/feature-lifecycle/src/test/java/org/onap/policy/drools/lifecycle/LifecycleStateRunningTest.java
@@ -98,10 +98,6 @@ public abstract class LifecycleStateRunningTest {
             String[] events = fsm.client.getSink().getRecentEvents();
             PdpStatus status = new StandardCoder().decode(events[events.length - 1], PdpStatus.class);
 
-            if (status.getSupportedPolicyTypes() != null) {
-                return false;
-            }
-
             return status.getMessageName() == PdpMessageType.PDP_STATUS && state == status.getState();
         };
     }
diff --git a/feature-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeature.java b/feature-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeature.java
index 7d5ba512..f88eaead 100644
--- a/feature-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeature.java
+++ b/feature-state-management/src/main/java/org/onap/policy/drools/statemanagement/StateManagementFeature.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * feature-state-management
  * ================================================================================
- * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2020 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.
@@ -21,10 +21,9 @@
 package org.onap.policy.drools.statemanagement;
 
 import java.io.IOException;
-import java.util.Observer;
 import java.util.Properties;
-
 import org.onap.policy.common.im.AllSeemsWellException;
+import org.onap.policy.common.im.StateChangeNotifier;
 import org.onap.policy.common.im.StateManagement;
 import org.onap.policy.drools.core.PolicySessionFeatureApi;
 import org.onap.policy.drools.features.PolicyEngineFeatureApi;
@@ -94,7 +93,7 @@ public class StateManagementFeature implements StateManagementFeatureApi,
      * {@inheritDoc}.
      */
     @Override
-    public void addObserver(Observer stateChangeObserver) {
+    public void addObserver(StateChangeNotifier stateChangeObserver) {
         logger.debug("StateManagementFeature.addObserver() entry\n"
                 + "StateManagementFeature.addObserver(): "
                 + "stateManagement.getAdminState(): {}", stateManagement.getAdminState());