Address sonar issues in drools-pdp

Addressed the following sonar issues:
- add "final" to public static fields
- commented code; some were bogus - just updated the comments
  so sonar is happy
- use "{}" instead of string concatenation
- junit should assert something
- when using logger, invoke compute-intensive tasks conditionally
- use superclass name instead of subclass name to access static fields
- don't always return the same value
- remove "transient" from fields of classes that aren't Serializable
- don't nest try/catch blocks
- use appropriate class name in Logger.getLogger()
- use Predicate<T> instead of Function<T,Boolean>
- remove unused parameters from private methods
- either log or throw
- remove duplicate methods
- use remove() TLS instead of set(null)
- null check is implicit in instanceof check
- do something with return value
- don't use volatile
- don't return "null" list; used Optional instead
- add no-arg constructor to non-Serializable superclass
- add callSuper=true for EqualsAndHashCode
- don't declare "throws XXX" where XXX is a subclass of RuntimeException
- remove serialVersionUID field if the class isn't Serializable

Also addressed some eclipse warnings:
- unused fields
- suppress generic typic cast warnings

Issue-ID: POLICY-2305
Change-Id: I906d5bf71c1f86531423e23b3667a585cdba45e1
Signed-off-by: Jim Hahn <jrh3@att.com>

2 files changed, 0 insertions, 4 deletions

diff --git a/policy-utils/src/test/java/org/onap/policy/drools/models/domains/a/DomainAPolicy.java b/policy-utils/src/test/java/org/onap/policy/drools/models/domains/a/DomainAPolicy.java
index 04f20b2a..47972397 100644
--- a/policy-utils/src/test/java/org/onap/policy/drools/models/domains/a/DomainAPolicy.java
+++ b/policy-utils/src/test/java/org/onap/policy/drools/models/domains/a/DomainAPolicy.java
@@ -27,8 +27,6 @@ import lombok.Data;
 @Data
 @Builder
 public class DomainAPolicy {
-    private static final long serialVersionUID = -8942432000554391455L;
-
     @SerializedName("type")
     public String type;
 
diff --git a/policy-utils/src/test/java/org/onap/policy/drools/policies/DomainMakerTest.java b/policy-utils/src/test/java/org/onap/policy/drools/policies/DomainMakerTest.java
index cfacc7ab..47d6c2d8 100644
--- a/policy-utils/src/test/java/org/onap/policy/drools/policies/DomainMakerTest.java
+++ b/policy-utils/src/test/java/org/onap/policy/drools/policies/DomainMakerTest.java
@@ -45,12 +45,10 @@ import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifi
 public class DomainMakerTest {
 
     private DomainMaker domainMaker;
-    private StandardCoder nonValCoder;
 
     @Before
     public void setUp() throws Exception {
         domainMaker = new DomainMaker();
-        nonValCoder = new StandardCoder();
     }
 
     @Test