Updated. Build a OVSDB driver and its associated behaviors for
supporting application to create VxLAN/GRE tunnels
This code is for JIRA ONOS-2181.

Change-Id: If7f341a422620a9e885741d4cc412fad39438d89
diff --git a/core/api/src/main/java/org/onosproject/net/behaviour/DefaultBridgeDescription.java b/core/api/src/main/java/org/onosproject/net/behaviour/DefaultBridgeDescription.java
new file mode 100644
index 0000000..6a6f670
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/behaviour/DefaultBridgeDescription.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2014-2015 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.net.behaviour;
+
+import java.util.Objects;
+
+import org.onosproject.net.AbstractDescription;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.SparseAnnotations;
+
+import com.google.common.base.MoreObjects;
+
+/**
+ * The default implementation of bridge.
+ */
+public final class DefaultBridgeDescription extends AbstractDescription
+        implements BridgeDescription {
+
+    private final BridgeName name;
+    private final DeviceId deviceId;
+    private final DeviceId controllerId;
+
+    public DefaultBridgeDescription(BridgeName name, DeviceId controllerId,
+                                    DeviceId deviceId,
+                                    SparseAnnotations... annotations) {
+        super(annotations);
+        this.name = name;
+        this.deviceId = deviceId;
+        this.controllerId = controllerId;
+    }
+
+    @Override
+    public BridgeName bridgeName() {
+        return name;
+    }
+
+    @Override
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    @Override
+    public DeviceId cotrollerDeviceId() {
+        return controllerId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, deviceId, controllerId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj instanceof DefaultBridgeDescription) {
+            final DefaultBridgeDescription that = (DefaultBridgeDescription) obj;
+            return this.getClass() == that.getClass()
+                    && Objects.equals(this.name, that.name)
+                    && Objects.equals(this.deviceId, that.deviceId)
+                    && Objects.equals(this.controllerId, that.controllerId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return MoreObjects.toStringHelper(getClass()).add("name", name)
+                .add("deviceId", deviceId).add("controllerId", controllerId)
+                .toString();
+    }
+
+}