Fix fortify issue with pooling extractor class

The pooling extractor class was using reflection to extract
values from private fields.  It has been modified to only extract
from public fields or to use public getXxx() methods instead.

Change-Id: I3aafe9ebfcd41d0e71dc3529030597609b704f53
Issue-ID: POLICY-906
Signed-off-by: Jim Hahn <jrh3@att.com>

2 files changed, 6 insertions, 17 deletions

diff --git a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/ClassExtractors.java b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/ClassExtractors.java
index 782511f5..97e96337 100644
--- a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/ClassExtractors.java
+++ b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/ClassExtractors.java
@@ -39,8 +39,10 @@ import org.slf4j.LoggerFactory;
  * <code>&lt;a.prefix>.&lt;class.name> = ${event.reqid}</code>
  * </pre>
  * 
- * If it doesn't find a property for the class, then it looks for a property for
- * that class' super class or interfaces. Extractors are compiled and cached.
+ * <p>For any given field name (e.g., "reqid"), it first looks for a public "getXxx()"
+ * method to extract the specified field. If that fails, then it looks for a public field
+ * by the given name. If that also fails, and the object is a <i>Map</i> subclass, then it
+ * simply uses the "get(field-name)" method to extract the data from the map.
  */
 public class ClassExtractors {
 
@@ -441,27 +443,16 @@ public class ClassExtractors {
             }
 
             try {
-                return clazz.getDeclaredField(name);
+                return clazz.getField(name);
 
             } catch (NoSuchFieldException expected) {
                 // no field by this name - try super class & interfaces
                 logger.debug("no field {} in {}", name, clazz.getName(), expected);
+                return null;
 
             } catch (SecurityException e) {
                 throw new ExtractorException("inaccessible field " + clazz + "." + name, e);
             }
-
-
-            Field field;
-
-            // see if the superclass has an extractor
-            if ((field = getClassField(clazz.getSuperclass(), name)) != null) {
-                return field;
-            }
-
-            // not necessary to check the interfaces
-
-            return field;
         }
     }
 }
diff --git a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/FieldExtractor.java b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/FieldExtractor.java
index 132b8ed0..d394795d 100644
--- a/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/FieldExtractor.java
+++ b/feature-pooling-dmaap/src/main/java/org/onap/policy/drools/pooling/extractor/FieldExtractor.java
@@ -42,8 +42,6 @@ public class FieldExtractor implements Extractor {
      */
     public FieldExtractor(Field field) {
         this.field = field;
-
-        field.setAccessible(true);
     }
 
     @Override