Import Android SDK Platform P [4386628]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4386628 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4386628.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: I9b8400ac92116cae4f033d173f7a5682b26ccba9

1 files changed, 51 insertions, 0 deletions

diff --git a/android/arch/persistence/room/Transaction.java b/android/arch/persistence/room/Transaction.java
new file mode 100644
index 00000000..914e4f41
--- /dev/null
+++ b/android/arch/persistence/room/Transaction.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2017 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 android.arch.persistence.room;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a method in an abstract {@link Dao} class as a transaction method.
+ * <p>
+ * The derived implementation of the method will execute the super method in a database transaction.
+ * All the parameters and return types are preserved. The transaction will be marked as successful
+ * unless an exception is thrown in the method body.
+ * <p>
+ * Example:
+ * <pre>
+ * {@literal @}Dao
+ * public abstract class ProductDao {
+ *    {@literal @}Insert
+ *     public abstract void insert(Product product);
+ *    {@literal @}Delete
+ *     public abstract void delete(Product product);
+ *    {@literal @}Transaction
+ *     public void insertAndDeleteInTransaction(Product newProduct, Product oldProduct) {
+ *         // Anything inside this method runs in a single transaction.
+ *         insert(newProduct);
+ *         delete(oldProduct);
+ *     }
+ * }
+ * </pre>
+ */
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.CLASS)
+public @interface Transaction {
+}