Move deprecated flow batch APIs to a less obvious place

Change-Id: I8078aadbafad1e5a339d74859bed94e25c9c6e8c
diff --git a/core/api/src/main/java/org/onosproject/net/flow/oldbatch/FlowRuleBatchEvent.java b/core/api/src/main/java/org/onosproject/net/flow/oldbatch/FlowRuleBatchEvent.java
new file mode 100644
index 0000000..ab41753
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/flow/oldbatch/FlowRuleBatchEvent.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2014-present Open Networking Foundation
+ *
+ * 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.flow.oldbatch;
+
+import org.onosproject.event.AbstractEvent;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.flow.CompletedBatchOperation;
+
+@Deprecated
+/**
+ * Describes flow rule batch event.
+ *
+ * @deprecated in Drake release - no longer a public API
+ */
+public final class FlowRuleBatchEvent extends AbstractEvent<FlowRuleBatchEvent.Type, FlowRuleBatchRequest> {
+
+
+    /**
+     * Type of flow rule events.
+     */
+    public enum Type {
+
+        // Request has been forwarded to MASTER Node
+        /**
+         * Signifies that a batch operation has been initiated.
+         */
+        BATCH_OPERATION_REQUESTED,
+
+        // MASTER Node has pushed the batch down to the Device
+        // (e.g., Received barrier reply)
+        /**
+         * Signifies that a batch operation has completed.
+         */
+        BATCH_OPERATION_COMPLETED,
+    }
+
+    private final CompletedBatchOperation result;
+    private final DeviceId deviceId;
+
+    /**
+     * Constructs a new FlowRuleBatchEvent.
+     *
+     * @param request batch operation request
+     * @param deviceId the device this batch will be processed on
+     * @return event.
+     */
+    public static FlowRuleBatchEvent requested(FlowRuleBatchRequest request, DeviceId deviceId) {
+        FlowRuleBatchEvent event = new FlowRuleBatchEvent(Type.BATCH_OPERATION_REQUESTED, request, deviceId);
+        return event;
+    }
+
+    /**
+     * Constructs a new FlowRuleBatchEvent.
+     * @param request batch operation request.
+     * @param result completed batch operation result.
+     * @return event.
+     */
+    public static FlowRuleBatchEvent completed(FlowRuleBatchRequest request, CompletedBatchOperation result) {
+        FlowRuleBatchEvent event = new FlowRuleBatchEvent(Type.BATCH_OPERATION_COMPLETED, request, result);
+        return event;
+    }
+
+    /**
+     * Returns the result of this batch operation.
+     * @return batch operation result.
+     */
+    public CompletedBatchOperation result() {
+        return result;
+    }
+
+    /**
+     * Returns the deviceId for this batch.
+     * @return device id
+     */
+    public DeviceId deviceId() {
+        return deviceId;
+    }
+
+    /**
+     * Creates an event of a given type and for the specified flow rule batch.
+     *
+     * @param type    flow rule batch event type
+     * @param request event flow rule batch subject
+     * @param result  the result of the batch operation
+     */
+    private FlowRuleBatchEvent(Type type, FlowRuleBatchRequest request, CompletedBatchOperation result) {
+        super(type, request);
+        this.result = result;
+        this.deviceId = result.deviceId();
+    }
+
+    /**
+     * Creates an event of a given type and for the specified flow rule batch.
+     *
+     * @param type      flow rule batch event type
+     * @param request   event flow rule batch subject
+     * @param deviceId  the device id for this batch
+     */
+    private FlowRuleBatchEvent(Type type, FlowRuleBatchRequest request, DeviceId deviceId) {
+        super(type, request);
+        this.result = null;
+        this.deviceId = deviceId;
+    }
+}