move isConnected to OpenFlowSwitch interface

Change-Id: I08d1746dc05464135cabe31888f6bb3eac9c15d5
diff --git a/providers/openflow/device/src/main/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProvider.java b/providers/openflow/device/src/main/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProvider.java
index 1a96fca..a960c02 100644
--- a/providers/openflow/device/src/main/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProvider.java
+++ b/providers/openflow/device/src/main/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProvider.java
@@ -39,7 +39,6 @@
 import org.onlab.onos.openflow.controller.OpenFlowSwitch;
 import org.onlab.onos.openflow.controller.OpenFlowSwitchListener;
 import org.onlab.onos.openflow.controller.RoleState;
-import org.onlab.onos.openflow.controller.driver.OpenFlowSwitchDriver;
 import org.onlab.packet.ChassisId;
 import org.projectfloodlight.openflow.protocol.OFFactory;
 import org.projectfloodlight.openflow.protocol.OFPortConfig;
@@ -113,14 +112,11 @@
 
     @Override
     public boolean isReachable(Device device) {
-        // FIXME if possible, we might want this to be part of
-        // OpenFlowSwitch interface so the driver interface isn't misused.
         OpenFlowSwitch sw = controller.getSwitch(dpid(device.id().uri()));
-        if (sw == null || !((OpenFlowSwitchDriver) sw).isConnected()) {
+        if (sw == null || !sw.isConnected()) {
             return false;
         }
         return true;
-        //return checkChannel(device, sw);
     }
 
     @Override
diff --git a/providers/openflow/device/src/test/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProviderTest.java b/providers/openflow/device/src/test/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProviderTest.java
index 76d32e4..839de7d 100644
--- a/providers/openflow/device/src/test/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProviderTest.java
+++ b/providers/openflow/device/src/test/java/org/onlab/onos/provider/of/device/impl/OpenFlowDeviceProviderTest.java
@@ -370,6 +370,11 @@
         }
 
         @Override
+        public boolean isConnected() {
+            return true;
+        }
+
+        @Override
         public void disconnectSwitch() {
         }
 
diff --git a/providers/openflow/link/src/test/java/org/onlab/onos/provider/of/link/impl/OpenFlowLinkProviderTest.java b/providers/openflow/link/src/test/java/org/onlab/onos/provider/of/link/impl/OpenFlowLinkProviderTest.java
index 4109ba0..a6b0ac3 100644
--- a/providers/openflow/link/src/test/java/org/onlab/onos/provider/of/link/impl/OpenFlowLinkProviderTest.java
+++ b/providers/openflow/link/src/test/java/org/onlab/onos/provider/of/link/impl/OpenFlowLinkProviderTest.java
@@ -475,6 +475,11 @@
         }
 
         @Override
+        public boolean isConnected() {
+            return true;
+        }
+
+        @Override
         public void disconnectSwitch() {
         }
 
diff --git a/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java b/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
index f547bbe..c27e084 100644
--- a/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
+++ b/providers/openflow/packet/src/test/java/org/onlab/onos/provider/of/packet/impl/OpenFlowPacketProviderTest.java
@@ -406,6 +406,11 @@
         }
 
         @Override
+        public boolean isConnected() {
+            return true;
+        }
+
+        @Override
         public void disconnectSwitch() {
         }