Address sonar/Checkstyle Issues

Sweep through Apex codebase to fix most ceheckstyle and
straightforward sonar issues.

Issue-ID: POLICY-1034
Change-Id: I149d9a94ad893affc93573e8de5e3304b6bdde2d
Signed-off-by: liamfallon <liam.fallon@ericsson.com>

6 files changed, 330 insertions, 278 deletions

diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AnomalyDetection.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AnomalyDetection.java
index f574c74ec..c70c9feb6 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AnomalyDetection.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AnomalyDetection.java
@@ -120,7 +120,7 @@ public class AnomalyDetection implements Serializable {
      *
      * @param anomalyScores the anomaly score values of the algorithm
      */
-    public void setAnomalyScores(final LinkedList<Double> anomalyScores) {
+    public void setAnomalyScores(final List<Double> anomalyScores) {
         this.anomalyScores = anomalyScores;
     }
 
diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AutoLearn.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AutoLearn.java
index f2e27725b..d935af5f0 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AutoLearn.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/concepts/AutoLearn.java
@@ -36,11 +36,6 @@ public class AutoLearn implements Serializable {
     private List<Long> counts = null;
 
     /**
-     * The Constructor creates an AutoLearn concept.
-     */
-    public AutoLearn() {}
-
-    /**
      * Checks if the Autolearn instance is initialized.
      *
      * @return true, if the Autolearn instance is initialized
@@ -55,14 +50,14 @@ public class AutoLearn implements Serializable {
      * @param size the number of convergent variables to use
      */
     public void init(final int size) {
-        if (avDiffs == null || avDiffs.size() == 0) {
+        if (avDiffs == null || avDiffs.isEmpty()) {
             avDiffs = new ArrayList<>(size);
             for (int i = 0; i < size; i++) {
                 avDiffs.add(i, Double.NaN);
             }
         }
 
-        if (counts == null || counts.size() == 0) {
+        if (counts == null || counts.isEmpty()) {
             counts = new ArrayList<>(size);
             for (int i = 0; i < size; i++) {
                 counts.add(i, 0L);
diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelFactory.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelFactory.java
index 6b71468d9..d13f93099 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelFactory.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelFactory.java
@@ -50,6 +50,19 @@ import org.onap.policy.apex.model.policymodel.handling.PolicyLogicReader;
  * The Class AdaptiveDomainModelFactory.
  */
 public class AdaptiveDomainModelFactory {
+    // Recurring string constants
+    private static final String LAST_MONITORED_VALUE = "LastMonitoredValue";
+    private static final String TASK_SELECTION_LOGIC = "TaskSelectionLogic";
+    private static final String DEFAULT_STATE_LOGIC = "DefaultState_Logic";
+    private static final String TASK_LOGIC = "TaskLogic";
+    private static final String DECIDE = "Decide";
+    private static final String ESTABLISH = "Establish";
+    private static final String MATCH = "Match";
+    private static final String EXTERNAL = "External";
+    private static final String DEFAULT_NAMESPACE = "org.onap.policy.apex.examples.adaptive.events";
+    private static final String ITERATION2 = "Iteration";
+    private static final String DEFAULT_VERSION = "0.0.1";
+    private static final String MONITORED_VALUE = "MonitoredValue";
 
     /**
      * Gets the anomaly detection policy model.
@@ -60,130 +73,142 @@ public class AdaptiveDomainModelFactory {
     public AxPolicyModel getAnomalyDetectionPolicyModel() {
         // CHECKSTYLE:ON: checkstyle:maximumMethodLength
         // Data types for event parameters
-        final AxContextSchema monitoredValue =
-                new AxContextSchema(new AxArtifactKey("MonitoredValue", "0.0.1"), "Java", "java.lang.Double");
-        final AxContextSchema iteration =
-                new AxContextSchema(new AxArtifactKey("Iteration", "0.0.1"), "Java", "java.lang.Integer");
+        final AxContextSchema monitoredValue = new AxContextSchema(new AxArtifactKey(MONITORED_VALUE, DEFAULT_VERSION),
+                        "Java", "java.lang.Double");
+        final AxContextSchema iteration = new AxContextSchema(new AxArtifactKey(ITERATION2, DEFAULT_VERSION), "Java",
+                        "java.lang.Integer");
 
-        final AxContextSchemas adContextSchemas = new AxContextSchemas(new AxArtifactKey("AADMDatatypes", "0.0.1"));
+        final AxContextSchemas adContextSchemas = new AxContextSchemas(
+                        new AxArtifactKey("AADMDatatypes", DEFAULT_VERSION));
         adContextSchemas.getSchemasMap().put(monitoredValue.getKey(), monitoredValue);
         adContextSchemas.getSchemasMap().put(iteration.getKey(), iteration);
 
-        final AxEvent anomalyDetectionTriggerEvent =
-                new AxEvent(new AxArtifactKey("AnomalyDetectionTriggerEvent", "0.0.1"),
-                        "org.onap.policy.apex.examples.adaptive.events");
-        anomalyDetectionTriggerEvent.setSource("External");
-        anomalyDetectionTriggerEvent.setTarget("Match");
-        anomalyDetectionTriggerEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(anomalyDetectionTriggerEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        anomalyDetectionTriggerEvent.getParameterMap().put("Iteration", new AxField(
-                new AxReferenceKey(anomalyDetectionTriggerEvent.getKey(), "Iteration"), iteration.getKey()));
-
-        final AxEvent anomalyDetectionMatchEvent = new AxEvent(new AxArtifactKey("AnomalyDetectionMatchEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
-        anomalyDetectionMatchEvent.setSource("Match");
-        anomalyDetectionMatchEvent.setTarget("Establish");
-        anomalyDetectionMatchEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(anomalyDetectionMatchEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        anomalyDetectionMatchEvent.getParameterMap().put("Iteration",
-                new AxField(new AxReferenceKey(anomalyDetectionMatchEvent.getKey(), "Iteration"), iteration.getKey()));
-
-        final AxEvent anomalyDetectionEstablishEvent =
-                new AxEvent(new AxArtifactKey("AnomalyDetectionEstablishEvent", "0.0.1"),
-                        "org.onap.policy.apex.examples.adaptive.events");
-        anomalyDetectionEstablishEvent.setSource("Establish");
-        anomalyDetectionEstablishEvent.setTarget("Decide");
-        anomalyDetectionEstablishEvent.getParameterMap().put("MonitoredValue",
-                new AxField(new AxReferenceKey(anomalyDetectionEstablishEvent.getKey(), "MonitoredValue"),
-                        monitoredValue.getKey()));
-        anomalyDetectionEstablishEvent.getParameterMap().put("Iteration", new AxField(
-                new AxReferenceKey(anomalyDetectionEstablishEvent.getKey(), "Iteration"), iteration.getKey()));
-
-        final AxEvent anomalyDetectionDecideEvent =
-                new AxEvent(new AxArtifactKey("AnomalyDetectionDecideEvent", "0.0.1"),
-                        "org.onap.policy.apex.examples.adaptive.events");
-        anomalyDetectionDecideEvent.setSource("Decide");
+        final AxEvent anomalyDetectionTriggerEvent = new AxEvent(
+                        new AxArtifactKey("AnomalyDetectionTriggerEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        anomalyDetectionTriggerEvent.setSource(EXTERNAL);
+        anomalyDetectionTriggerEvent.setTarget(MATCH);
+        anomalyDetectionTriggerEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(anomalyDetectionTriggerEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        anomalyDetectionTriggerEvent.getParameterMap().put(ITERATION2, new AxField(
+                        new AxReferenceKey(anomalyDetectionTriggerEvent.getKey(), ITERATION2), iteration.getKey()));
+
+        final AxEvent anomalyDetectionMatchEvent = new AxEvent(
+                        new AxArtifactKey("AnomalyDetectionMatchEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        anomalyDetectionMatchEvent.setSource(MATCH);
+        anomalyDetectionMatchEvent.setTarget(ESTABLISH);
+        anomalyDetectionMatchEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(anomalyDetectionMatchEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        anomalyDetectionMatchEvent.getParameterMap().put(ITERATION2, new AxField(
+                        new AxReferenceKey(anomalyDetectionMatchEvent.getKey(), ITERATION2), iteration.getKey()));
+
+        final AxEvent anomalyDetectionEstablishEvent = new AxEvent(
+                        new AxArtifactKey("AnomalyDetectionEstablishEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        anomalyDetectionEstablishEvent.setSource(ESTABLISH);
+        anomalyDetectionEstablishEvent.setTarget(DECIDE);
+        anomalyDetectionEstablishEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(anomalyDetectionEstablishEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        anomalyDetectionEstablishEvent.getParameterMap().put(ITERATION2, new AxField(
+                        new AxReferenceKey(anomalyDetectionEstablishEvent.getKey(), ITERATION2), iteration.getKey()));
+
+        final AxEvent anomalyDetectionDecideEvent = new AxEvent(
+                        new AxArtifactKey("AnomalyDetectionDecideEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        anomalyDetectionDecideEvent.setSource(DECIDE);
         anomalyDetectionDecideEvent.setTarget("Act");
-        anomalyDetectionDecideEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(anomalyDetectionDecideEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        anomalyDetectionDecideEvent.getParameterMap().put("Iteration",
-                new AxField(new AxReferenceKey(anomalyDetectionDecideEvent.getKey(), "Iteration"), iteration.getKey()));
-
-        final AxEvent anomalyDetectionActEvent = new AxEvent(new AxArtifactKey("AnomalyDetectionActEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
+        anomalyDetectionDecideEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(anomalyDetectionDecideEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        anomalyDetectionDecideEvent.getParameterMap().put(ITERATION2, new AxField(
+                        new AxReferenceKey(anomalyDetectionDecideEvent.getKey(), ITERATION2), iteration.getKey()));
+
+        final AxEvent anomalyDetectionActEvent = new AxEvent(
+                        new AxArtifactKey("AnomalyDetectionActEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
         anomalyDetectionActEvent.setSource("Act");
-        anomalyDetectionActEvent.setTarget("External");
-        anomalyDetectionActEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(anomalyDetectionActEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        anomalyDetectionActEvent.getParameterMap().put("Iteration",
-                new AxField(new AxReferenceKey(anomalyDetectionActEvent.getKey(), "Iteration"), iteration.getKey()));
-
-        final AxEvents anomalyDetectionEvents = new AxEvents(new AxArtifactKey("AnomalyDetectionEvents", "0.0.1"));
+        anomalyDetectionActEvent.setTarget(EXTERNAL);
+        anomalyDetectionActEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(anomalyDetectionActEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        anomalyDetectionActEvent.getParameterMap().put(ITERATION2, new AxField(
+                        new AxReferenceKey(anomalyDetectionActEvent.getKey(), ITERATION2), iteration.getKey()));
+
+        final AxEvents anomalyDetectionEvents = new AxEvents(
+                        new AxArtifactKey("AnomalyDetectionEvents", DEFAULT_VERSION));
         anomalyDetectionEvents.getEventMap().put(anomalyDetectionTriggerEvent.getKey(), anomalyDetectionTriggerEvent);
         anomalyDetectionEvents.getEventMap().put(anomalyDetectionMatchEvent.getKey(), anomalyDetectionMatchEvent);
         anomalyDetectionEvents.getEventMap().put(anomalyDetectionEstablishEvent.getKey(),
-                anomalyDetectionEstablishEvent);
+                        anomalyDetectionEstablishEvent);
         anomalyDetectionEvents.getEventMap().put(anomalyDetectionDecideEvent.getKey(), anomalyDetectionDecideEvent);
         anomalyDetectionEvents.getEventMap().put(anomalyDetectionActEvent.getKey(), anomalyDetectionActEvent);
 
         // Data types for context
-        final AxContextSchema anomalyDetection = new AxContextSchema(new AxArtifactKey("AnomalyDetection", "0.0.1"),
-                "Java", "org.onap.policy.apex.examples.adaptive.concepts.AnomalyDetection");
+        final AxContextSchema anomalyDetection = new AxContextSchema(
+                        new AxArtifactKey("AnomalyDetection", DEFAULT_VERSION), "Java",
+                        "org.onap.policy.apex.examples.adaptive.concepts.AnomalyDetection");
         adContextSchemas.getSchemasMap().put(anomalyDetection.getKey(), anomalyDetection);
 
         // One context map
         final AxContextAlbum anomalyDetectionAlbum = new AxContextAlbum(
-                new AxArtifactKey("AnomalyDetectionAlbum", "0.0.1"), "APPLICATION", true, anomalyDetection.getKey());
-        final AxContextAlbums anomalyDetectionAlbums =
-                new AxContextAlbums(new AxArtifactKey("AnomalyDetectionAlbums", "0.0.1"));
+                        new AxArtifactKey("AnomalyDetectionAlbum", DEFAULT_VERSION), "APPLICATION", true,
+                        anomalyDetection.getKey());
+        final AxContextAlbums anomalyDetectionAlbums = new AxContextAlbums(
+                        new AxArtifactKey("AnomalyDetectionAlbums", DEFAULT_VERSION));
         anomalyDetectionAlbums.getAlbumsMap().put(anomalyDetectionAlbum.getKey(), anomalyDetectionAlbum);
 
         // Tasks
-        final AxLogicReader logicReader =
-                new PolicyLogicReader().setLogicPackage(this.getClass().getPackage().getName())
+        final AxLogicReader logicReader = new PolicyLogicReader()
+                        .setLogicPackage(this.getClass().getPackage().getName())
                         .setDefaultLogic("DefaultAnomalyDetectionTask_Logic");
 
-        final AxTask anomalyDetectionMatchTask = new AxTask(new AxArtifactKey("AnomalyDetectionMatchTask", "0.0.1"));
+        final AxTask anomalyDetectionMatchTask = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionMatchTask", DEFAULT_VERSION));
         anomalyDetectionMatchTask.duplicateInputFields(anomalyDetectionTriggerEvent.getParameterMap());
         anomalyDetectionMatchTask.duplicateOutputFields(anomalyDetectionMatchEvent.getParameterMap());
-        anomalyDetectionMatchTask
-                .setTaskLogic(new AxTaskLogic(anomalyDetectionMatchTask.getKey(), "TaskLogic", "MVEL", logicReader));
+        anomalyDetectionMatchTask.setTaskLogic(
+                        new AxTaskLogic(anomalyDetectionMatchTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask anomalyDetectionEstablishTask =
-                new AxTask(new AxArtifactKey("AnomalyDetectionEstablishTask", "0.0.1"));
+        final AxTask anomalyDetectionEstablishTask = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionEstablishTask", DEFAULT_VERSION));
         anomalyDetectionEstablishTask.duplicateInputFields(anomalyDetectionMatchEvent.getParameterMap());
         anomalyDetectionEstablishTask.duplicateOutputFields(anomalyDetectionEstablishEvent.getParameterMap());
         anomalyDetectionEstablishTask.setTaskLogic(
-                new AxTaskLogic(anomalyDetectionEstablishTask.getKey(), "TaskLogic", "MVEL", logicReader));
+                        new AxTaskLogic(anomalyDetectionEstablishTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask anomalyDetectionDecideTask0 =
-                new AxTask(new AxArtifactKey("AnomalyDetectionDecideTask0", "0.0.1"));
+        final AxTask anomalyDetectionDecideTask0 = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionDecideTask0", DEFAULT_VERSION));
         anomalyDetectionDecideTask0.duplicateInputFields(anomalyDetectionEstablishEvent.getParameterMap());
         anomalyDetectionDecideTask0.duplicateOutputFields(anomalyDetectionDecideEvent.getParameterMap());
-        anomalyDetectionDecideTask0
-                .setTaskLogic(new AxTaskLogic(anomalyDetectionDecideTask0.getKey(), "TaskLogic", "MVEL", logicReader));
+        anomalyDetectionDecideTask0.setTaskLogic(
+                        new AxTaskLogic(anomalyDetectionDecideTask0.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask anomalyDetectionDecideTask1 =
-                new AxTask(new AxArtifactKey("AnomalyDetectionDecideTask1", "0.0.1"));
+        final AxTask anomalyDetectionDecideTask1 = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionDecideTask1", DEFAULT_VERSION));
         anomalyDetectionDecideTask1.duplicateInputFields(anomalyDetectionEstablishEvent.getParameterMap());
         anomalyDetectionDecideTask1.duplicateOutputFields(anomalyDetectionDecideEvent.getParameterMap());
-        anomalyDetectionDecideTask1
-                .setTaskLogic(new AxTaskLogic(anomalyDetectionDecideTask1.getKey(), "TaskLogic", "MVEL", logicReader));
+        anomalyDetectionDecideTask1.setTaskLogic(
+                        new AxTaskLogic(anomalyDetectionDecideTask1.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask anomalyDetectionDecideTask2 =
-                new AxTask(new AxArtifactKey("AnomalyDetectionDecideTask2", "0.0.1"));
+        final AxTask anomalyDetectionDecideTask2 = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionDecideTask2", DEFAULT_VERSION));
         anomalyDetectionDecideTask2.duplicateInputFields(anomalyDetectionEstablishEvent.getParameterMap());
         anomalyDetectionDecideTask2.duplicateOutputFields(anomalyDetectionDecideEvent.getParameterMap());
-        anomalyDetectionDecideTask2
-                .setTaskLogic(new AxTaskLogic(anomalyDetectionDecideTask2.getKey(), "TaskLogic", "MVEL", logicReader));
+        anomalyDetectionDecideTask2.setTaskLogic(
+                        new AxTaskLogic(anomalyDetectionDecideTask2.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask anomalyDetectionActTask = new AxTask(new AxArtifactKey("AnomalyDetectionActTask", "0.0.1"));
+        final AxTask anomalyDetectionActTask = new AxTask(
+                        new AxArtifactKey("AnomalyDetectionActTask", DEFAULT_VERSION));
         anomalyDetectionActTask.duplicateInputFields(anomalyDetectionDecideEvent.getParameterMap());
         anomalyDetectionActTask.duplicateOutputFields(anomalyDetectionActEvent.getParameterMap());
-        anomalyDetectionActTask
-                .setTaskLogic(new AxTaskLogic(anomalyDetectionActTask.getKey(), "TaskLogic", "MVEL", logicReader));
+        anomalyDetectionActTask.setTaskLogic(
+                        new AxTaskLogic(anomalyDetectionActTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTasks anomalyDetectionTasks = new AxTasks(new AxArtifactKey("AnomalyDetectionTasks", "0.0.1"));
+        final AxTasks anomalyDetectionTasks = new AxTasks(new AxArtifactKey("AnomalyDetectionTasks", DEFAULT_VERSION));
         anomalyDetectionTasks.getTaskMap().put(anomalyDetectionMatchTask.getKey(), anomalyDetectionMatchTask);
         anomalyDetectionTasks.getTaskMap().put(anomalyDetectionEstablishTask.getKey(), anomalyDetectionEstablishTask);
         anomalyDetectionTasks.getTaskMap().put(anomalyDetectionDecideTask0.getKey(), anomalyDetectionDecideTask0);
@@ -192,92 +217,98 @@ public class AdaptiveDomainModelFactory {
         anomalyDetectionTasks.getTaskMap().put(anomalyDetectionActTask.getKey(), anomalyDetectionActTask);
 
         // Policies
-        logicReader.setDefaultLogic("DefaultState_Logic");
+        logicReader.setDefaultLogic(DEFAULT_STATE_LOGIC);
 
-        final AxPolicy anomalyDetectionPolicy = new AxPolicy(new AxArtifactKey("AnomalyDetectionPolicy", "0.0.1"));
+        final AxPolicy anomalyDetectionPolicy = new AxPolicy(
+                        new AxArtifactKey("AnomalyDetectionPolicy", DEFAULT_VERSION));
         anomalyDetectionPolicy.setTemplate("MEDA");
 
-        final AxState anomalyDetectionActState =
-                new AxState(new AxReferenceKey(anomalyDetectionPolicy.getKey(), "Act"));
+        final AxState anomalyDetectionActState = new AxState(
+                        new AxReferenceKey(anomalyDetectionPolicy.getKey(), "Act"));
         anomalyDetectionActState.setTrigger(anomalyDetectionDecideEvent.getKey());
         final AxStateOutput adAct2Out = new AxStateOutput(anomalyDetectionActState.getKey(),
-                AxReferenceKey.getNullKey(), anomalyDetectionActEvent.getKey());
+                        AxReferenceKey.getNullKey(), anomalyDetectionActEvent.getKey());
         anomalyDetectionActState.getStateOutputs().put(adAct2Out.getKey().getLocalName(), adAct2Out);
-        anomalyDetectionActState.setTaskSelectionLogic(
-                new AxTaskSelectionLogic(anomalyDetectionActState.getKey(), "TaskSelectionLogic", "MVEL", logicReader));
+        anomalyDetectionActState.setTaskSelectionLogic(new AxTaskSelectionLogic(anomalyDetectionActState.getKey(),
+                        TASK_SELECTION_LOGIC, "MVEL", logicReader));
         anomalyDetectionActState.setDefaultTask(anomalyDetectionActTask.getKey());
         anomalyDetectionActState.getTaskReferences().put(anomalyDetectionActTask.getKey(),
-                new AxStateTaskReference(anomalyDetectionActState.getKey(), anomalyDetectionActTask.getKey(),
-                        AxStateTaskOutputType.DIRECT, adAct2Out.getKey()));
+                        new AxStateTaskReference(anomalyDetectionActState.getKey(), anomalyDetectionActTask.getKey(),
+                                        AxStateTaskOutputType.DIRECT, adAct2Out.getKey()));
 
         logicReader.setDefaultLogic(null);
 
-        final AxState anomalyDetectionDecideState =
-                new AxState(new AxReferenceKey(anomalyDetectionPolicy.getKey(), "Decide"));
+        final AxState anomalyDetectionDecideState = new AxState(
+                        new AxReferenceKey(anomalyDetectionPolicy.getKey(), DECIDE));
         anomalyDetectionDecideState.setTrigger(anomalyDetectionEstablishEvent.getKey());
         final AxStateOutput adDec2Act = new AxStateOutput(anomalyDetectionDecideState.getKey(),
-                anomalyDetectionActState.getKey(), anomalyDetectionDecideEvent.getKey());
+                        anomalyDetectionActState.getKey(), anomalyDetectionDecideEvent.getKey());
         anomalyDetectionDecideState.getStateOutputs().put(adDec2Act.getKey().getLocalName(), adDec2Act);
         anomalyDetectionDecideState.setTaskSelectionLogic(new AxTaskSelectionLogic(anomalyDetectionDecideState.getKey(),
-                "TaskSelectionLogic", "JAVA", logicReader));
+                        TASK_SELECTION_LOGIC, "JAVA", logicReader));
         anomalyDetectionDecideState.setDefaultTask(anomalyDetectionDecideTask0.getKey());
         anomalyDetectionDecideState.getContextAlbumReferences().add(anomalyDetectionAlbum.getKey());
         anomalyDetectionDecideState.getTaskReferences().put(anomalyDetectionDecideTask0.getKey(),
-                new AxStateTaskReference(anomalyDetectionDecideState.getKey(), anomalyDetectionDecideTask0.getKey(),
-                        AxStateTaskOutputType.DIRECT, adDec2Act.getKey()));
+                        new AxStateTaskReference(anomalyDetectionDecideState.getKey(),
+                                        anomalyDetectionDecideTask0.getKey(), AxStateTaskOutputType.DIRECT,
+                                        adDec2Act.getKey()));
         anomalyDetectionDecideState.getTaskReferences().put(anomalyDetectionDecideTask1.getKey(),
-                new AxStateTaskReference(anomalyDetectionDecideState.getKey(), anomalyDetectionDecideTask1.getKey(),
-                        AxStateTaskOutputType.DIRECT, adDec2Act.getKey()));
+                        new AxStateTaskReference(anomalyDetectionDecideState.getKey(),
+                                        anomalyDetectionDecideTask1.getKey(), AxStateTaskOutputType.DIRECT,
+                                        adDec2Act.getKey()));
         anomalyDetectionDecideState.getTaskReferences().put(anomalyDetectionDecideTask2.getKey(),
-                new AxStateTaskReference(anomalyDetectionDecideState.getKey(), anomalyDetectionDecideTask2.getKey(),
-                        AxStateTaskOutputType.DIRECT, adDec2Act.getKey()));
+                        new AxStateTaskReference(anomalyDetectionDecideState.getKey(),
+                                        anomalyDetectionDecideTask2.getKey(), AxStateTaskOutputType.DIRECT,
+                                        adDec2Act.getKey()));
 
-        logicReader.setDefaultLogic("DefaultState_Logic");
+        logicReader.setDefaultLogic(DEFAULT_STATE_LOGIC);
 
-        final AxState anomalyDetectionEstablishState =
-                new AxState(new AxReferenceKey(anomalyDetectionPolicy.getKey(), "Establish"));
+        final AxState anomalyDetectionEstablishState = new AxState(
+                        new AxReferenceKey(anomalyDetectionPolicy.getKey(), ESTABLISH));
         anomalyDetectionEstablishState.setTrigger(anomalyDetectionMatchEvent.getKey());
         final AxStateOutput adEst2Dec = new AxStateOutput(anomalyDetectionEstablishState.getKey(),
-                anomalyDetectionDecideState.getKey(), anomalyDetectionEstablishEvent.getKey());
+                        anomalyDetectionDecideState.getKey(), anomalyDetectionEstablishEvent.getKey());
         anomalyDetectionEstablishState.getStateOutputs().put(adEst2Dec.getKey().getLocalName(), adEst2Dec);
         anomalyDetectionEstablishState.setTaskSelectionLogic(new AxTaskSelectionLogic(
-                anomalyDetectionEstablishState.getKey(), "TaskSelectionLogic", "MVEL", logicReader));
+                        anomalyDetectionEstablishState.getKey(), TASK_SELECTION_LOGIC, "MVEL", logicReader));
         anomalyDetectionEstablishState.setDefaultTask(anomalyDetectionEstablishTask.getKey());
         anomalyDetectionEstablishState.getTaskReferences().put(anomalyDetectionEstablishTask.getKey(),
-                new AxStateTaskReference(anomalyDetectionEstablishState.getKey(),
-                        anomalyDetectionEstablishTask.getKey(), AxStateTaskOutputType.DIRECT, adEst2Dec.getKey()));
+                        new AxStateTaskReference(anomalyDetectionEstablishState.getKey(),
+                                        anomalyDetectionEstablishTask.getKey(), AxStateTaskOutputType.DIRECT,
+                                        adEst2Dec.getKey()));
 
-        final AxState anomalyDetectionMatchState =
-                new AxState(new AxReferenceKey(anomalyDetectionPolicy.getKey(), "Match"));
+        final AxState anomalyDetectionMatchState = new AxState(
+                        new AxReferenceKey(anomalyDetectionPolicy.getKey(), MATCH));
         anomalyDetectionMatchState.setTrigger(anomalyDetectionTriggerEvent.getKey());
         final AxStateOutput adMat2Est = new AxStateOutput(anomalyDetectionMatchState.getKey(),
-                anomalyDetectionEstablishState.getKey(), anomalyDetectionMatchEvent.getKey());
+                        anomalyDetectionEstablishState.getKey(), anomalyDetectionMatchEvent.getKey());
         anomalyDetectionMatchState.getStateOutputs().put(adMat2Est.getKey().getLocalName(), adMat2Est);
         anomalyDetectionMatchState.setTaskSelectionLogic(new AxTaskSelectionLogic(anomalyDetectionMatchState.getKey(),
-                "TaskSelectionLogic", "MVEL", logicReader));
+                        TASK_SELECTION_LOGIC, "MVEL", logicReader));
         anomalyDetectionMatchState.setDefaultTask(anomalyDetectionMatchTask.getKey());
         anomalyDetectionMatchState.getTaskReferences().put(anomalyDetectionMatchTask.getKey(),
-                new AxStateTaskReference(anomalyDetectionMatchState.getKey(), anomalyDetectionMatchTask.getKey(),
-                        AxStateTaskOutputType.DIRECT, adMat2Est.getKey()));
+                        new AxStateTaskReference(anomalyDetectionMatchState.getKey(),
+                                        anomalyDetectionMatchTask.getKey(), AxStateTaskOutputType.DIRECT,
+                                        adMat2Est.getKey()));
 
         anomalyDetectionPolicy.setFirstState(anomalyDetectionMatchState.getKey().getLocalName());
         anomalyDetectionPolicy.getStateMap().put(anomalyDetectionMatchState.getKey().getLocalName(),
-                anomalyDetectionMatchState);
+                        anomalyDetectionMatchState);
         anomalyDetectionPolicy.getStateMap().put(anomalyDetectionEstablishState.getKey().getLocalName(),
-                anomalyDetectionEstablishState);
+                        anomalyDetectionEstablishState);
         anomalyDetectionPolicy.getStateMap().put(anomalyDetectionDecideState.getKey().getLocalName(),
-                anomalyDetectionDecideState);
+                        anomalyDetectionDecideState);
         anomalyDetectionPolicy.getStateMap().put(anomalyDetectionActState.getKey().getLocalName(),
-                anomalyDetectionActState);
+                        anomalyDetectionActState);
 
-        final AxPolicies anomalyDetectionPolicies =
-                new AxPolicies(new AxArtifactKey("AnomalyDetectionPolicies", "0.0.1"));
+        final AxPolicies anomalyDetectionPolicies = new AxPolicies(
+                        new AxArtifactKey("AnomalyDetectionPolicies", DEFAULT_VERSION));
         anomalyDetectionPolicies.getPolicyMap().put(anomalyDetectionPolicy.getKey(), anomalyDetectionPolicy);
 
-        final AxKeyInformation keyInformation =
-                new AxKeyInformation(new AxArtifactKey("AnomalyDetectionKeyInformation", "0.0.1"));
-        final AxPolicyModel anomalyDetectionPolicyModel =
-                new AxPolicyModel(new AxArtifactKey("AnomalyDetectionPolicyModel", "0.0.1"));
+        final AxKeyInformation keyInformation = new AxKeyInformation(
+                        new AxArtifactKey("AnomalyDetectionKeyInformation", DEFAULT_VERSION));
+        final AxPolicyModel anomalyDetectionPolicyModel = new AxPolicyModel(
+                        new AxArtifactKey("AnomalyDetectionPolicyModel", DEFAULT_VERSION));
         anomalyDetectionPolicyModel.setPolicies(anomalyDetectionPolicies);
         anomalyDetectionPolicyModel.setEvents(anomalyDetectionEvents);
         anomalyDetectionPolicyModel.setTasks(anomalyDetectionTasks);
@@ -302,58 +333,65 @@ public class AdaptiveDomainModelFactory {
     public AxPolicyModel getAutoLearnPolicyModel() {
         // CHECKSTYLE:ON: checkstyle:maximumMethodLength
         // Data types for event parameters
-        final AxContextSchema monitoredValue =
-                new AxContextSchema(new AxArtifactKey("MonitoredValue", "0.0.1"), "Java", "java.lang.Double");
+        final AxContextSchema monitoredValue = new AxContextSchema(new AxArtifactKey(MONITORED_VALUE, DEFAULT_VERSION),
+                        "Java", "java.lang.Double");
 
-        final AxContextSchemas alContextSchemas = new AxContextSchemas(new AxArtifactKey("ALDatatypes", "0.0.1"));
+        final AxContextSchemas alContextSchemas = new AxContextSchemas(
+                        new AxArtifactKey("ALDatatypes", DEFAULT_VERSION));
         alContextSchemas.getSchemasMap().put(monitoredValue.getKey(), monitoredValue);
 
-        final AxEvent autoLearnTriggerEvent = new AxEvent(new AxArtifactKey("AutoLearnTriggerEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
-        autoLearnTriggerEvent.setSource("External");
-        autoLearnTriggerEvent.setTarget("Match");
-        autoLearnTriggerEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnTriggerEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        autoLearnTriggerEvent.getParameterMap().put("LastMonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnTriggerEvent.getKey(), "LastMonitoredValue"), monitoredValue.getKey()));
-
-        final AxEvent autoLearnMatchEvent = new AxEvent(new AxArtifactKey("AutoLearnMatchEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
-        autoLearnMatchEvent.setSource("Match");
-        autoLearnMatchEvent.setTarget("Establish");
-        autoLearnMatchEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnMatchEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        autoLearnMatchEvent.getParameterMap().put("LastMonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnMatchEvent.getKey(), "LastMonitoredValue"), monitoredValue.getKey()));
-
-        final AxEvent autoLearnEstablishEvent = new AxEvent(new AxArtifactKey("AutoLearnEstablishEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
-        autoLearnEstablishEvent.setSource("Establish");
-        autoLearnEstablishEvent.setTarget("Decide");
-        autoLearnEstablishEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnEstablishEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        autoLearnEstablishEvent.getParameterMap().put("LastMonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnEstablishEvent.getKey(), "LastMonitoredValue"), monitoredValue.getKey()));
-
-        final AxEvent autoLearnDecideEvent = new AxEvent(new AxArtifactKey("AutoLearnDecideEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
-        autoLearnDecideEvent.setSource("Decide");
+        final AxEvent autoLearnTriggerEvent = new AxEvent(new AxArtifactKey("AutoLearnTriggerEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        autoLearnTriggerEvent.setSource(EXTERNAL);
+        autoLearnTriggerEvent.setTarget(MATCH);
+        autoLearnTriggerEvent.getParameterMap().put(MONITORED_VALUE, new AxField(
+                        new AxReferenceKey(autoLearnTriggerEvent.getKey(), MONITORED_VALUE), monitoredValue.getKey()));
+        autoLearnTriggerEvent.getParameterMap().put(LAST_MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(autoLearnTriggerEvent.getKey(), LAST_MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+
+        final AxEvent autoLearnMatchEvent = new AxEvent(new AxArtifactKey("AutoLearnMatchEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        autoLearnMatchEvent.setSource(MATCH);
+        autoLearnMatchEvent.setTarget(ESTABLISH);
+        autoLearnMatchEvent.getParameterMap().put(MONITORED_VALUE, new AxField(
+                        new AxReferenceKey(autoLearnMatchEvent.getKey(), MONITORED_VALUE), monitoredValue.getKey()));
+        autoLearnMatchEvent.getParameterMap().put(LAST_MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(autoLearnMatchEvent.getKey(), LAST_MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+
+        final AxEvent autoLearnEstablishEvent = new AxEvent(
+                        new AxArtifactKey("AutoLearnEstablishEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        autoLearnEstablishEvent.setSource(ESTABLISH);
+        autoLearnEstablishEvent.setTarget(DECIDE);
+        autoLearnEstablishEvent.getParameterMap().put(MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(autoLearnEstablishEvent.getKey(), MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+        autoLearnEstablishEvent.getParameterMap().put(LAST_MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(autoLearnEstablishEvent.getKey(), LAST_MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+
+        final AxEvent autoLearnDecideEvent = new AxEvent(new AxArtifactKey("AutoLearnDecideEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
+        autoLearnDecideEvent.setSource(DECIDE);
         autoLearnDecideEvent.setTarget("Act");
-        autoLearnDecideEvent.getParameterMap().put("MonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnDecideEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        autoLearnDecideEvent.getParameterMap().put("LastMonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnDecideEvent.getKey(), "LastMonitoredValue"), monitoredValue.getKey()));
-
-        final AxEvent autoLearnActEvent = new AxEvent(new AxArtifactKey("AutoLearnActEvent", "0.0.1"),
-                "org.onap.policy.apex.examples.adaptive.events");
+        autoLearnDecideEvent.getParameterMap().put(MONITORED_VALUE, new AxField(
+                        new AxReferenceKey(autoLearnDecideEvent.getKey(), MONITORED_VALUE), monitoredValue.getKey()));
+        autoLearnDecideEvent.getParameterMap().put(LAST_MONITORED_VALUE,
+                        new AxField(new AxReferenceKey(autoLearnDecideEvent.getKey(), LAST_MONITORED_VALUE),
+                                        monitoredValue.getKey()));
+
+        final AxEvent autoLearnActEvent = new AxEvent(new AxArtifactKey("AutoLearnActEvent", DEFAULT_VERSION),
+                        DEFAULT_NAMESPACE);
         autoLearnActEvent.setSource("Act");
-        autoLearnActEvent.setTarget("External");
-        autoLearnActEvent.getParameterMap().put("MonitoredValue",
-                new AxField(new AxReferenceKey(autoLearnActEvent.getKey(), "MonitoredValue"), monitoredValue.getKey()));
-        autoLearnActEvent.getParameterMap().put("LastMonitoredValue", new AxField(
-                new AxReferenceKey(autoLearnActEvent.getKey(), "LastMonitoredValue"), monitoredValue.getKey()));
+        autoLearnActEvent.setTarget(EXTERNAL);
+        autoLearnActEvent.getParameterMap().put(MONITORED_VALUE, new AxField(
+                        new AxReferenceKey(autoLearnActEvent.getKey(), MONITORED_VALUE), monitoredValue.getKey()));
+        autoLearnActEvent.getParameterMap().put(LAST_MONITORED_VALUE, new AxField(
+                        new AxReferenceKey(autoLearnActEvent.getKey(), LAST_MONITORED_VALUE), monitoredValue.getKey()));
 
-        final AxEvents autoLearnEvents = new AxEvents(new AxArtifactKey("AutoLearnEvents", "0.0.1"));
+        final AxEvents autoLearnEvents = new AxEvents(new AxArtifactKey("AutoLearnEvents", DEFAULT_VERSION));
         autoLearnEvents.getEventMap().put(autoLearnTriggerEvent.getKey(), autoLearnTriggerEvent);
         autoLearnEvents.getEventMap().put(autoLearnMatchEvent.getKey(), autoLearnMatchEvent);
         autoLearnEvents.getEventMap().put(autoLearnEstablishEvent.getKey(), autoLearnEstablishEvent);
@@ -361,84 +399,86 @@ public class AdaptiveDomainModelFactory {
         autoLearnEvents.getEventMap().put(autoLearnActEvent.getKey(), autoLearnActEvent);
 
         // Data types for context
-        final AxContextSchema autoLearn = new AxContextSchema(new AxArtifactKey("AutoLearn", "0.0.1"), "Java",
-                "org.onap.policy.apex.examples.adaptive.concepts.AutoLearn");
+        final AxContextSchema autoLearn = new AxContextSchema(new AxArtifactKey("AutoLearn", DEFAULT_VERSION), "Java",
+                        "org.onap.policy.apex.examples.adaptive.concepts.AutoLearn");
         alContextSchemas.getSchemasMap().put(autoLearn.getKey(), autoLearn);
 
         // One context map
-        final AxContextAlbum autoLearnAlbum = new AxContextAlbum(new AxArtifactKey("AutoLearnAlbum", "0.0.1"),
-                "APPLICATION", true, autoLearn.getKey());
+        final AxContextAlbum autoLearnAlbum = new AxContextAlbum(new AxArtifactKey("AutoLearnAlbum", DEFAULT_VERSION),
+                        "APPLICATION", true, autoLearn.getKey());
 
-        final AxContextAlbums autoLearnAlbums = new AxContextAlbums(new AxArtifactKey("AutoLearnContext", "0.0.1"));
+        final AxContextAlbums autoLearnAlbums = new AxContextAlbums(
+                        new AxArtifactKey("AutoLearnContext", DEFAULT_VERSION));
         autoLearnAlbums.getAlbumsMap().put(autoLearnAlbum.getKey(), autoLearnAlbum);
 
         // Tasks
         final AxLogicReader logicReader = new PolicyLogicReader()
-                .setLogicPackage(this.getClass().getPackage().getName()).setDefaultLogic("DefaultAutoLearnTask_Logic");
+                        .setLogicPackage(this.getClass().getPackage().getName())
+                        .setDefaultLogic("DefaultAutoLearnTask_Logic");
 
-        final AxTask autoLearnMatchTask = new AxTask(new AxArtifactKey("AutoLearnMatchTask", "0.0.1"));
+        final AxTask autoLearnMatchTask = new AxTask(new AxArtifactKey("AutoLearnMatchTask", DEFAULT_VERSION));
         autoLearnMatchTask.duplicateInputFields(autoLearnTriggerEvent.getParameterMap());
         autoLearnMatchTask.duplicateOutputFields(autoLearnMatchEvent.getParameterMap());
-        autoLearnMatchTask.setTaskLogic(new AxTaskLogic(autoLearnMatchTask.getKey(), "TaskLogic", "MVEL", logicReader));
+        autoLearnMatchTask.setTaskLogic(new AxTaskLogic(autoLearnMatchTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnEstablishTask = new AxTask(new AxArtifactKey("AutoLearnEstablishTask", "0.0.1"));
+        final AxTask autoLearnEstablishTask = new AxTask(new AxArtifactKey("AutoLearnEstablishTask", DEFAULT_VERSION));
         autoLearnEstablishTask.duplicateInputFields(autoLearnMatchEvent.getParameterMap());
         autoLearnEstablishTask.duplicateOutputFields(autoLearnEstablishEvent.getParameterMap());
-        autoLearnEstablishTask
-                .setTaskLogic(new AxTaskLogic(autoLearnEstablishTask.getKey(), "TaskLogic", "MVEL", logicReader));
+        autoLearnEstablishTask.setTaskLogic(
+                        new AxTaskLogic(autoLearnEstablishTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
         logicReader.setDefaultLogic(null);
 
-        final AxTask autoLearnDecideTask0 = new AxTask(new AxArtifactKey("AutoLearnDecideTask0", "0.0.1"));
+        final AxTask autoLearnDecideTask0 = new AxTask(new AxArtifactKey("AutoLearnDecideTask0", DEFAULT_VERSION));
         autoLearnDecideTask0.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask0.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask0
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask0.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask0.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask1 = new AxTask(new AxArtifactKey("AutoLearnDecideTask1", "0.0.1"));
+        final AxTask autoLearnDecideTask1 = new AxTask(new AxArtifactKey("AutoLearnDecideTask1", DEFAULT_VERSION));
         autoLearnDecideTask1.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask1.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask1
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask1.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask1.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask2 = new AxTask(new AxArtifactKey("AutoLearnDecideTask2", "0.0.1"));
+        final AxTask autoLearnDecideTask2 = new AxTask(new AxArtifactKey("AutoLearnDecideTask2", DEFAULT_VERSION));
         autoLearnDecideTask2.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask2.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask2
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask2.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask2.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask3 = new AxTask(new AxArtifactKey("AutoLearnDecideTask3", "0.0.1"));
+        final AxTask autoLearnDecideTask3 = new AxTask(new AxArtifactKey("AutoLearnDecideTask3", DEFAULT_VERSION));
         autoLearnDecideTask3.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask3.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask3
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask3.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask3.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask4 = new AxTask(new AxArtifactKey("AutoLearnDecideTask4", "0.0.1"));
+        final AxTask autoLearnDecideTask4 = new AxTask(new AxArtifactKey("AutoLearnDecideTask4", DEFAULT_VERSION));
         autoLearnDecideTask4.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask4.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask4
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask4.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask4.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask5 = new AxTask(new AxArtifactKey("AutoLearnDecideTask5", "0.0.1"));
+        final AxTask autoLearnDecideTask5 = new AxTask(new AxArtifactKey("AutoLearnDecideTask5", DEFAULT_VERSION));
         autoLearnDecideTask5.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask5.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask5
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask5.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask5.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTask autoLearnDecideTask6 = new AxTask(new AxArtifactKey("AutoLearnDecideTask6", "0.0.1"));
+        final AxTask autoLearnDecideTask6 = new AxTask(new AxArtifactKey("AutoLearnDecideTask6", DEFAULT_VERSION));
         autoLearnDecideTask6.duplicateInputFields(autoLearnEstablishEvent.getParameterMap());
         autoLearnDecideTask6.duplicateOutputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnDecideTask6
-                .setTaskLogic(new AxTaskLogic(autoLearnDecideTask6.getKey(), "TaskLogic", "MVEL", logicReader));
+                        .setTaskLogic(new AxTaskLogic(autoLearnDecideTask6.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
         logicReader.setDefaultLogic("DefaultAutoLearnTask_Logic");
 
-        final AxTask autoLearnActTask = new AxTask(new AxArtifactKey("AutoLearnActTask", "0.0.1"));
+        final AxTask autoLearnActTask = new AxTask(new AxArtifactKey("AutoLearnActTask", DEFAULT_VERSION));
         autoLearnActTask.duplicateInputFields(autoLearnDecideEvent.getParameterMap());
         autoLearnActTask.duplicateOutputFields(autoLearnActEvent.getParameterMap());
-        autoLearnActTask.setTaskLogic(new AxTaskLogic(autoLearnActTask.getKey(), "TaskLogic", "MVEL", logicReader));
+        autoLearnActTask.setTaskLogic(new AxTaskLogic(autoLearnActTask.getKey(), TASK_LOGIC, "MVEL", logicReader));
 
-        final AxTasks autoLearnTasks = new AxTasks(new AxArtifactKey("AutoLearnTasks", "0.0.1"));
+        final AxTasks autoLearnTasks = new AxTasks(new AxArtifactKey("AutoLearnTasks", DEFAULT_VERSION));
         autoLearnTasks.getTaskMap().put(autoLearnMatchTask.getKey(), autoLearnMatchTask);
         autoLearnTasks.getTaskMap().put(autoLearnEstablishTask.getKey(), autoLearnEstablishTask);
         autoLearnTasks.getTaskMap().put(autoLearnDecideTask0.getKey(), autoLearnDecideTask0);
@@ -451,81 +491,81 @@ public class AdaptiveDomainModelFactory {
         autoLearnTasks.getTaskMap().put(autoLearnActTask.getKey(), autoLearnActTask);
 
         // Policies
-        logicReader.setDefaultLogic("DefaultState_Logic");
+        logicReader.setDefaultLogic(DEFAULT_STATE_LOGIC);
 
-        final AxPolicy autoLearnPolicy = new AxPolicy(new AxArtifactKey("AutoLearnPolicy", "0.0.1"));
+        final AxPolicy autoLearnPolicy = new AxPolicy(new AxArtifactKey("AutoLearnPolicy", DEFAULT_VERSION));
         autoLearnPolicy.setTemplate("MEDA");
 
         final AxState autoLearnActState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), "Act"));
         autoLearnActState.setTrigger(autoLearnDecideEvent.getKey());
-        final AxStateOutput alAct2Out =
-                new AxStateOutput(autoLearnActState.getKey(), AxReferenceKey.getNullKey(), autoLearnActEvent.getKey());
+        final AxStateOutput alAct2Out = new AxStateOutput(autoLearnActState.getKey(), AxReferenceKey.getNullKey(),
+                        autoLearnActEvent.getKey());
         autoLearnActState.getStateOutputs().put(alAct2Out.getKey().getLocalName(), alAct2Out);
-        autoLearnActState.setTaskSelectionLogic(
-                new AxTaskSelectionLogic(autoLearnActState.getKey(), "TaskSelectionLogic", "MVEL", logicReader));
+        autoLearnActState.setTaskSelectionLogic(new AxTaskSelectionLogic(autoLearnActState.getKey(),
+                        TASK_SELECTION_LOGIC, "MVEL", logicReader));
         autoLearnActState.setDefaultTask(autoLearnActTask.getKey());
         autoLearnActState.getTaskReferences().put(autoLearnActTask.getKey(),
-                new AxStateTaskReference(autoLearnActState.getKey(), autoLearnActTask.getKey(),
-                        AxStateTaskOutputType.DIRECT, alAct2Out.getKey()));
+                        new AxStateTaskReference(autoLearnActState.getKey(), autoLearnActTask.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alAct2Out.getKey()));
 
         logicReader.setDefaultLogic(null);
 
-        final AxState autoLearnDecideState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), "Decide"));
+        final AxState autoLearnDecideState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), DECIDE));
         autoLearnDecideState.setTrigger(autoLearnEstablishEvent.getKey());
         final AxStateOutput alDec2Act = new AxStateOutput(autoLearnDecideState.getKey(), autoLearnActState.getKey(),
-                autoLearnDecideEvent.getKey());
+                        autoLearnDecideEvent.getKey());
         autoLearnDecideState.getStateOutputs().put(alDec2Act.getKey().getLocalName(), alDec2Act);
         autoLearnDecideState.getContextAlbumReferences().add(autoLearnAlbum.getKey());
-        autoLearnDecideState.setTaskSelectionLogic(
-                new AxTaskSelectionLogic(autoLearnDecideState.getKey(), "TaskSelectionLogic", "JAVA", logicReader));
+        autoLearnDecideState.setTaskSelectionLogic(new AxTaskSelectionLogic(autoLearnDecideState.getKey(),
+                        TASK_SELECTION_LOGIC, "JAVA", logicReader));
         autoLearnDecideState.setDefaultTask(autoLearnDecideTask0.getKey());
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask0.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask0.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask0.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask1.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask1.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask1.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask2.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask2.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask2.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask3.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask3.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask3.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask4.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask4.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask4.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask5.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask5.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask5.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
         autoLearnDecideState.getTaskReferences().put(autoLearnDecideTask6.getKey(),
-                new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask6.getKey(),
-                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
+                        new AxStateTaskReference(autoLearnDecideState.getKey(), autoLearnDecideTask6.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alDec2Act.getKey()));
 
-        logicReader.setDefaultLogic("DefaultState_Logic");
+        logicReader.setDefaultLogic(DEFAULT_STATE_LOGIC);
 
-        final AxState autoLearnEstablishState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), "Establish"));
+        final AxState autoLearnEstablishState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), ESTABLISH));
         autoLearnEstablishState.setTrigger(autoLearnMatchEvent.getKey());
         final AxStateOutput alEst2Dec = new AxStateOutput(autoLearnEstablishState.getKey(),
-                autoLearnDecideState.getKey(), autoLearnEstablishEvent.getKey());
+                        autoLearnDecideState.getKey(), autoLearnEstablishEvent.getKey());
         autoLearnEstablishState.getStateOutputs().put(alEst2Dec.getKey().getLocalName(), alEst2Dec);
-        autoLearnEstablishState.setTaskSelectionLogic(
-                new AxTaskSelectionLogic(autoLearnEstablishState.getKey(), "TaskSelectionLogic", "MVEL", logicReader));
+        autoLearnEstablishState.setTaskSelectionLogic(new AxTaskSelectionLogic(autoLearnEstablishState.getKey(),
+                        TASK_SELECTION_LOGIC, "MVEL", logicReader));
         autoLearnEstablishState.setDefaultTask(autoLearnEstablishTask.getKey());
         autoLearnEstablishState.getTaskReferences().put(autoLearnEstablishTask.getKey(),
-                new AxStateTaskReference(autoLearnEstablishState.getKey(), autoLearnEstablishTask.getKey(),
-                        AxStateTaskOutputType.DIRECT, alEst2Dec.getKey()));
+                        new AxStateTaskReference(autoLearnEstablishState.getKey(), autoLearnEstablishTask.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alEst2Dec.getKey()));
 
-        final AxState autoLearnMatchState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), "Match"));
+        final AxState autoLearnMatchState = new AxState(new AxReferenceKey(autoLearnPolicy.getKey(), MATCH));
         autoLearnMatchState.setTrigger(autoLearnTriggerEvent.getKey());
         final AxStateOutput alMat2Est = new AxStateOutput(autoLearnMatchState.getKey(),
-                autoLearnEstablishState.getKey(), autoLearnMatchEvent.getKey());
+                        autoLearnEstablishState.getKey(), autoLearnMatchEvent.getKey());
         autoLearnMatchState.getStateOutputs().put(alMat2Est.getKey().getLocalName(), alMat2Est);
-        autoLearnMatchState.setTaskSelectionLogic(
-                new AxTaskSelectionLogic(autoLearnMatchState.getKey(), "TaskSelectionLogic", "MVEL", logicReader));
+        autoLearnMatchState.setTaskSelectionLogic(new AxTaskSelectionLogic(autoLearnMatchState.getKey(),
+                        TASK_SELECTION_LOGIC, "MVEL", logicReader));
         autoLearnMatchState.setDefaultTask(autoLearnMatchTask.getKey());
         autoLearnMatchState.getTaskReferences().put(autoLearnMatchTask.getKey(),
-                new AxStateTaskReference(autoLearnMatchState.getKey(), autoLearnMatchTask.getKey(),
-                        AxStateTaskOutputType.DIRECT, alMat2Est.getKey()));
+                        new AxStateTaskReference(autoLearnMatchState.getKey(), autoLearnMatchTask.getKey(),
+                                        AxStateTaskOutputType.DIRECT, alMat2Est.getKey()));
 
         autoLearnPolicy.setFirstState(autoLearnMatchState.getKey().getLocalName());
         autoLearnPolicy.getStateMap().put(autoLearnMatchState.getKey().getLocalName(), autoLearnMatchState);
@@ -533,13 +573,13 @@ public class AdaptiveDomainModelFactory {
         autoLearnPolicy.getStateMap().put(autoLearnDecideState.getKey().getLocalName(), autoLearnDecideState);
         autoLearnPolicy.getStateMap().put(autoLearnActState.getKey().getLocalName(), autoLearnActState);
 
-        final AxPolicies autoLearnPolicies = new AxPolicies(new AxArtifactKey("AutoLearnPolicies", "0.0.1"));
+        final AxPolicies autoLearnPolicies = new AxPolicies(new AxArtifactKey("AutoLearnPolicies", DEFAULT_VERSION));
         autoLearnPolicies.getPolicyMap().put(autoLearnPolicy.getKey(), autoLearnPolicy);
 
-        final AxKeyInformation keyInformation =
-                new AxKeyInformation(new AxArtifactKey("AutoLearnKeyInformation", "0.0.1"));
-        final AxPolicyModel autoLearnPolicyModel =
-                new AxPolicyModel(new AxArtifactKey("AutoLearnPolicyModel", "0.0.1"));
+        final AxKeyInformation keyInformation = new AxKeyInformation(
+                        new AxArtifactKey("AutoLearnKeyInformation", DEFAULT_VERSION));
+        final AxPolicyModel autoLearnPolicyModel = new AxPolicyModel(
+                        new AxArtifactKey("AutoLearnPolicyModel", DEFAULT_VERSION));
         autoLearnPolicyModel.setPolicies(autoLearnPolicies);
         autoLearnPolicyModel.setEvents(autoLearnEvents);
         autoLearnPolicyModel.setTasks(autoLearnTasks);
diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelSaver.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelSaver.java
index 9c860e3c8..4949edd30 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelSaver.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/AdaptiveDomainModelSaver.java
@@ -23,6 +23,8 @@ package org.onap.policy.apex.examples.adaptive.model;
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 import org.onap.policy.apex.model.basicmodel.handling.ApexModelSaver;
 import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
 
 /**
  * This class saves sample domain models to disk in XML and JSON format.
@@ -30,10 +32,15 @@ import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
  * @author Liam Fallon (liam.fallon@ericsson.com)
  */
 public final class AdaptiveDomainModelSaver {
+    // Logger for this class
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(AdaptiveDomainModelSaver.class);
+
     /**
      * Private default constructor to prevent subclassing.
      */
-    private AdaptiveDomainModelSaver() {}
+    private AdaptiveDomainModelSaver() {
+        // Prevent subclassing
+    }
 
     /**
      * Write the AADM model to args[0].
@@ -43,21 +50,21 @@ public final class AdaptiveDomainModelSaver {
      */
     public static void main(final String[] args) throws ApexException {
         if (args.length != 1) {
-            System.err.println("usage: " + AdaptiveDomainModelSaver.class.getCanonicalName() + " modelDirectory");
+            LOGGER.error("usage: " + AdaptiveDomainModelSaver.class.getCanonicalName() + " modelDirectory");
             return;
         }
 
         // Save Anomaly Detection model
         final AxPolicyModel adPolicyModel = new AdaptiveDomainModelFactory().getAnomalyDetectionPolicyModel();
         final ApexModelSaver<AxPolicyModel> adModelSaver =
-                new ApexModelSaver<>(AxPolicyModel.class, adPolicyModel, args[0]);
+                        new ApexModelSaver<>(AxPolicyModel.class, adPolicyModel, args[0]);
         adModelSaver.apexModelWriteJson();
         adModelSaver.apexModelWriteXml();
 
         // Save Auto Learn model
         final AxPolicyModel alPolicyModel = new AdaptiveDomainModelFactory().getAutoLearnPolicyModel();
         final ApexModelSaver<AxPolicyModel> alModelSaver =
-                new ApexModelSaver<>(AxPolicyModel.class, alPolicyModel, args[0]);
+                        new ApexModelSaver<>(AxPolicyModel.class, alPolicyModel, args[0]);
         alModelSaver.apexModelWriteJson();
         alModelSaver.apexModelWriteXml();
     }
diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AnomalyDetectionPolicy_Decide_TaskSelectionLogic.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AnomalyDetectionPolicyDecideTaskSelectionLogic.java
index 2a654c38e..5ee114e0e 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AnomalyDetectionPolicy_Decide_TaskSelectionLogic.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AnomalyDetectionPolicyDecideTaskSelectionLogic.java
@@ -34,13 +34,15 @@ import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 import org.slf4j.Logger;
 
 /**
- * The Class AnomalyDetectionPolicy_Decide_TaskSelectionLogic.
+ * The Class AnomalyDetectionPolicyDecideTaskSelectionLogic.
  */
-// CHECKSTYLE:OFF: checkstyle:className
-public class AnomalyDetectionPolicy_Decide_TaskSelectionLogic {
-    // CHECKSTYLE:ON: checkstyle:className
-
+public class AnomalyDetectionPolicyDecideTaskSelectionLogic {
     private Logger logger;
+
+    // Recurring string constants
+    private static final String ANOMALY_DETECTION_ALBUM = "AnomalyDetectionAlbum";
+    private static final String ANOMALY_DETECTION = "AnomalyDetection";
+
     // configuration
     private static final double ANOMALY_SENSITIVITY = 0.05;
     private static final int FREQUENCY = 360;
@@ -73,8 +75,10 @@ public class AnomalyDetectionPolicy_Decide_TaskSelectionLogic {
     public boolean getTask(final TaskSelectionExecutionContext executor) {
         executionContext = executor;
         logger = executionContext.logger;
-        logger.debug(executor.subject.getId());
-        logger.debug(executor.inFields.toString());
+        String id = executor.subject.getId();
+        logger.debug(id);
+        String inFields = executor.inFields.toString();
+        logger.debug(inFields);
         final double now = (Double) (executor.inFields.get("MonitoredValue"));
         final Integer iteration = (Integer) (executor.inFields.get("Iteration"));
         // get the double[forecastedValue, AnomalyScore, AnomalyProbability]
@@ -111,18 +115,18 @@ public class AnomalyDetectionPolicy_Decide_TaskSelectionLogic {
      */
     public double[] forecastingAndAnomaly(final double value) {
         try {
-            executionContext.getContextAlbum("AnomalyDetectionAlbum").lockForWriting("AnomalyDetection");
+            executionContext.getContextAlbum(ANOMALY_DETECTION_ALBUM).lockForWriting(ANOMALY_DETECTION);
         } catch (final ApexException e) {
             logger.error("Failed to acquire write lock on \"AnomalyDetection\" context", e);
-            return null;
+            return new double[0];
         }
 
         // Get the context object
         AnomalyDetection anomalyDetection =
-                (AnomalyDetection) executionContext.getContextAlbum("AnomalyDetectionAlbum").get("AnomalyDetection");
+                (AnomalyDetection) executionContext.getContextAlbum(ANOMALY_DETECTION_ALBUM).get(ANOMALY_DETECTION);
         if (anomalyDetection == null) {
             anomalyDetection = new AnomalyDetection();
-            executionContext.getContextAlbum("AnomalyDetectionAlbum").put("AnomalyDetection", anomalyDetection);
+            executionContext.getContextAlbum(ANOMALY_DETECTION_ALBUM).put(ANOMALY_DETECTION, anomalyDetection);
         }
 
         // Check the lists are initialized
@@ -175,10 +179,10 @@ public class AnomalyDetectionPolicy_Decide_TaskSelectionLogic {
         // CHECKSTYLE:ON: checkstyle:magicNumber
 
         try {
-            executionContext.getContextAlbum("AnomalyDetectionAlbum").unlockForWriting("AnomalyDetection");
+            executionContext.getContextAlbum(ANOMALY_DETECTION_ALBUM).unlockForWriting(ANOMALY_DETECTION);
         } catch (final ApexException e) {
             logger.error("Failed to release write lock on \"AnomalyDetection\" context", e);
-            return null;
+            return new double[0];
         }
 
         return new double[] {forecastedValue, anomalyScore, anomalyProbability};
diff --git a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AutoLearnPolicy_Decide_TaskSelectionLogic.java b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AutoLearnPolicyDecideTaskSelectionLogic.java
index 23d4e2486..d60b04c00 100644
--- a/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AutoLearnPolicy_Decide_TaskSelectionLogic.java
+++ b/examples/examples-adaptive/src/main/java/org/onap/policy/apex/examples/adaptive/model/java/AutoLearnPolicyDecideTaskSelectionLogic.java
@@ -29,11 +29,13 @@ import org.onap.policy.apex.core.engine.executor.context.TaskSelectionExecutionC
 import org.onap.policy.apex.examples.adaptive.concepts.AutoLearn;
 
 /**
- * The Class AutoLearnPolicy_Decide_TaskSelectionLogic.
+ * The Class AutoLearnPolicyDecideTaskSelectionLogic.
  */
-// CHECKSTYLE:OFF: checkstyle:typeName
-public class AutoLearnPolicy_Decide_TaskSelectionLogic {
-    // CHECKSTYLE:ON: checkstyle:typeName
+public class AutoLearnPolicyDecideTaskSelectionLogic {
+    // Recurring string constants
+    private static final String AUTO_LEARN_ALBUM = "AutoLearnAlbum";
+    private static final String AUTO_LEARN = "AutoLearn";
+
     private static final Random RAND = new Random(System.currentTimeMillis());
     private static final double WANT = 50.0;
     private int size;
@@ -45,20 +47,24 @@ public class AutoLearnPolicy_Decide_TaskSelectionLogic {
      * @return the task
      */
     public boolean getTask(final TaskSelectionExecutionContext executor) {
-        executor.logger.debug(executor.subject.getId());
-        executor.logger.debug(executor.inFields.toString());
+        String idString = executor.subject.getId();
+        executor.logger.debug(idString);
+        
+        String inFieldsString = executor.inFields.toString();
+        executor.logger.debug(inFieldsString);
+        
         final List<String> tasks = executor.subject.getTaskNames();
         size = tasks.size();
 
         try {
-            executor.getContextAlbum("AutoLearnAlbum").lockForWriting("AutoLearn");
+            executor.getContextAlbum(AUTO_LEARN_ALBUM).lockForWriting(AUTO_LEARN);
         } catch (final ContextException e) {
             executor.logger.error("Failed to acquire write lock on \"autoLearn\" context", e);
             return false;
         }
 
         // Get the context object
-        AutoLearn autoLearn = (AutoLearn) executor.getContextAlbum("AutoLearnAlbum").get("AutoLearn");
+        AutoLearn autoLearn = (AutoLearn) executor.getContextAlbum(AUTO_LEARN_ALBUM).get(AUTO_LEARN);
         if (autoLearn == null) {
             autoLearn = new AutoLearn();
         }
@@ -73,10 +79,10 @@ public class AutoLearnPolicy_Decide_TaskSelectionLogic {
         final int option = getOption(diff, autoLearn);
         learn(option, diff, autoLearn);
 
-        executor.getContextAlbum("AutoLearnAlbum").put("AutoLearnAlbum", autoLearn);
+        executor.getContextAlbum(AUTO_LEARN_ALBUM).put(AUTO_LEARN_ALBUM, autoLearn);
 
         try {
-            executor.getContextAlbum("AutoLearnAlbum").unlockForWriting("AutoLearn");
+            executor.getContextAlbum(AUTO_LEARN_ALBUM).unlockForWriting(AUTO_LEARN);
         } catch (final ContextException e) {
             executor.logger.error("Failed to acquire write lock on \"autoLearn\" context", e);
             return false;