Updated ROOM

app/src/main/java/androidx/room/DelegatingOpenHelper.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * 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 androidx.room;
+
+import androidx.annotation.NonNull;
+import androidx.sqlite.db.SupportSQLiteOpenHelper;
+
+/**
+ * Package private interface for OpenHelpers which delegate to other open helpers.
+ *
+ * TODO(b/175612939): delete this interface once implementations are merged.
+ */
+interface DelegatingOpenHelper {
+
+    /**
+     * Returns the delegate open helper (which may itself be a DelegatingOpenHelper) so
+     * configurations on specific instances can be applied.
+     *
+     * @return the delegate
+     */
+    @NonNull
+    SupportSQLiteOpenHelper getDelegate();
+}