From: Temoc Rodriguez <cr056n@att.com>
Date: Tue, 12 Sep 2017 15:23:53 +0000 (-0700)
Subject: Fix nullPointerException
X-Git-Tag: v1.1.0~100^2
X-Git-Url: https://gerrit.onap.org/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F77%2F11977%2F2;p=policy%2Fdrools-applications.git

Fix nullPointerException

Fix nullPointerException by changing return values of attributesProvided
and attributesRequired from null to empty Set.

Issue-ID: POLICY-55
Change-Id: I9516a9bcad591cc582834cb49fa54e58a1f45a47
Signed-off-by: Temoc Rodriguez <cr056n@att.com>
---

diff --git a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
index 0ec0098a1..3e93bd761 100644
--- a/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
+++ b/controlloop/common/guard/src/main/java/org/onap/policy/guard/PIPEngineGetHistory.java
@@ -23,6 +23,7 @@ package org.onap.policy.guard;
 import java.math.BigInteger;
 import java.sql.Timestamp;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.Date;
 import java.util.HashSet;
 import java.util.Iterator;
@@ -112,13 +113,13 @@ public class PIPEngineGetHistory extends StdConfigurableEngine{
 	@Override
 	public Collection<PIPRequest> attributesRequired() {
 		// TODO Auto-generated method stub
-		return null;
+	    return Collections.emptySet();
 	}
 
 	@Override
 	public Collection<PIPRequest> attributesProvided() {
 		// TODO Auto-generated method stub
-		return null;
+	    return Collections.emptySet();
 	}
 
 	@Override