Working implementation of Bmv2FlowRuleProgrammable

Change-Id: Ib5bfe4bb5bca677b158f0030d7db6bdf29a1de08
diff --git a/drivers/bmv2/src/main/java/org/onosproject/drivers/bmv2/Bmv2TableEntryReference.java b/drivers/bmv2/src/main/java/org/onosproject/drivers/bmv2/Bmv2TableEntryReference.java
new file mode 100644
index 0000000..184a65f
--- /dev/null
+++ b/drivers/bmv2/src/main/java/org/onosproject/drivers/bmv2/Bmv2TableEntryReference.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2017-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.drivers.bmv2;
+
+import com.google.common.base.MoreObjects;
+import com.google.common.base.Objects;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.pi.runtime.PiMatchKey;
+import org.onosproject.net.pi.runtime.PiTableId;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+public final class Bmv2TableEntryReference {
+
+    private final DeviceId deviceId;
+    private final PiTableId tableId;
+    private final PiMatchKey matchKey;
+
+    /**
+     * Creates a new table entry reference.
+     *
+     * @param deviceId a device ID
+     * @param tableId  a table name
+     * @param matchKey a match key
+     */
+    public Bmv2TableEntryReference(DeviceId deviceId, PiTableId tableId, PiMatchKey matchKey) {
+        this.deviceId = checkNotNull(deviceId);
+        this.tableId = checkNotNull(tableId);
+        this.matchKey = checkNotNull(matchKey);
+    }
+
+    /**
+     * Returns the device ID of this table entry reference.
+     *
+     * @return a device ID
+     */
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    /**
+     * Returns the table id of this table entry reference.
+     *
+     * @return a table name
+     */
+    public PiTableId tableId() {
+        return tableId;
+    }
+
+    /**
+     * Returns the match key of this table entry reference.
+     *
+     * @return a match key
+     */
+    public PiMatchKey matchKey() {
+        return matchKey;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(deviceId, tableId, matchKey);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        final Bmv2TableEntryReference other = (Bmv2TableEntryReference) obj;
+        return Objects.equal(this.deviceId, other.deviceId)
+                && Objects.equal(this.tableId, other.tableId)
+                && Objects.equal(this.matchKey, other.matchKey);
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(this)
+                .add("deviceId", deviceId)
+                .add("tableId", tableId)
+                .add("matchKey", matchKey)
+                .toString();
+    }
+}