initial commit

Change-Id: Idddb494b6593de2188b5c837f3caa46c0e956573
diff --git a/src/main/java/org/opencord/sadis/SubscriberAndDeviceInformationService.java b/src/main/java/org/opencord/sadis/SubscriberAndDeviceInformationService.java
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@@ -0,0 +1,36 @@
+/*
+ * Copyright 2015-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.opencord.sadis;
+
+/**
+ * Subscriber And Device Information Service.
+ */
+public interface SubscriberAndDeviceInformationService {
+
+    /**
+     * Removes all cached entries.
+     */
+    public void invalidateAll();
+
+    /**
+     * Return the information associated with the given ID.
+     *
+     * @param id
+     *            key to information
+     * @return information associated with ID, if available, else null
+     */
+    public SubscriberAndDeviceInformation get(String id);
+}