SONAR suggestions - prevent truncation of arithmetic expressions

Change-Id: I4694c0c3183b991a4f0db793f584bc77a5fb7d60
diff --git a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
index 66ded21..b007af1 100644
--- a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
+++ b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/OpenFlowDeviceProvider.java
@@ -419,7 +419,7 @@
 
     //TODO consider renaming KBPS and MBPS (as they are used to convert by division)
     private static final long KBPS = 1_000;
-    private static final long MBPS = 1_000 * 1_000;
+    private static final long MBPS = 1_000L * 1_000L;
     private static final Frequency FREQ50 = Frequency.ofGHz(50);
     private static final Frequency FREQ191_7 = Frequency.ofGHz(191_700);
     private static final Frequency FREQ4_4 = Frequency.ofGHz(4_400);
diff --git a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java
index cb83948..a17a690 100644
--- a/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java
+++ b/providers/openflow/device/src/main/java/org/onosproject/provider/of/device/impl/PortStatsCollector.java
@@ -36,7 +36,7 @@
 
     private final Logger log = getLogger(getClass());
 
-    private static final int SECONDS = 1000;
+    private static final long SECONDS = 1000L;
 
     private OpenFlowSwitch sw;
     private Timer timer;
diff --git a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowStatsCollector.java b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowStatsCollector.java
index 6f24fd2..f2e7137 100644
--- a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowStatsCollector.java
+++ b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/FlowStatsCollector.java
@@ -35,7 +35,7 @@
 
     private final Logger log = getLogger(getClass());
 
-    public static final int SECONDS = 1000;
+    public static final long SECONDS = 1000L;
 
     private final OpenFlowSwitch sw;
     private Timer timer;
diff --git a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/TableStatisticsCollector.java b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/TableStatisticsCollector.java
index ee3f0c9..73dabeb 100644
--- a/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/TableStatisticsCollector.java
+++ b/providers/openflow/flow/src/main/java/org/onosproject/provider/of/flow/impl/TableStatisticsCollector.java
@@ -33,7 +33,7 @@
 
     private final Logger log = getLogger(getClass());
 
-    public static final int SECONDS = 1000;
+    public static final long SECONDS = 1000L;
 
     private final OpenFlowSwitch sw;
     private Timer timer;