Use Collections.singletonList

vkedia · vkedia · commit c92bc2d97eb3 · 2017-07-11T13:35:37.000-07:00
diff --git a/google-cloud-examples/src/main/java/com/google/cloud/examples/spanner/snippets/DatabaseClientSnippets.java b/google-cloud-examples/src/main/java/com/google/cloud/examples/spanner/snippets/DatabaseClientSnippets.java
@@ -32,9 +32,7 @@
 import com.google.cloud.spanner.TransactionContext;
 import com.google.cloud.spanner.TransactionRunner;
 import com.google.cloud.spanner.TransactionRunner.TransactionCallable;
-import java.util.ArrayList;
 import java.util.Collections;
-import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -55,17 +53,15 @@ public DatabaseClientSnippets(DatabaseClient dbClient) {
   // [VARIABLE my_singer_id]
   public void write(long singerId) {
     // [START write]
-    List<Mutation> mutations = new ArrayList<>();
-    mutations.add(
-        Mutation.newInsertBuilder("Singer")
+    Mutation mutation = Mutation.newInsertBuilder("Singer")
             .set("SingerId")
             .to(singerId)
             .set("FirstName")
             .to("Billy")
             .set("LastName")
             .to("Joel")
-            .build());
-    dbClient.write(mutations);
+            .build();
+    dbClient.write(Collections.singletonList(mutation));
     // [END write]
   }
 
@@ -76,17 +72,15 @@ public void write(long singerId) {
   // [VARIABLE my_singer_id]
   public void writeAtLeastOnce(long singerId) {
     // [START writeAtLeastOnce]
-    List<Mutation> mutations = new ArrayList<>();
-    mutations.add(
-        Mutation.newInsertBuilder("Singers")
+    Mutation mutation = Mutation.newInsertBuilder("Singers")
             .set("SingerId")
             .to(singerId)
             .set("FirstName")
             .to("Billy")
             .set("LastName")
             .to("Joel")
-            .build());
-    dbClient.writeAtLeastOnce(mutations);
+            .build();
+    dbClient.writeAtLeastOnce(Collections.singletonList(mutation));
     // [END writeAtLeastOnce]
   }
 
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/DatabaseClient.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/DatabaseClient.java
@@ -36,17 +36,15 @@ public interface DatabaseClient {
    * <p>Example of blind write.
    * <pre> {@code
    * long singerId = my_singer_id;
-   * List<Mutation> mutations = new ArrayList<>();
-   * mutations.add(
-   *     Mutation.newInsertBuilder("Singer")
+   * Mutation mutation = Mutation.newInsertBuilder("Singer")
    *         .set("SingerId")
    *         .to(singerId)
    *         .set("FirstName")
    *         .to("Billy")
    *         .set("LastName")
    *         .to("Joel")
-   *         .build());
-   * dbClient.write(mutations);
+   *         .build();
+   * dbClient.write(Collections.singletonList(mutation));
    * }</pre>
    *
    * @return the timestamp at which the write was committed
@@ -68,17 +66,15 @@ public interface DatabaseClient {
    * <p>Example of unprotected blind write.
    * <pre> {@code
    * long singerId = my_singer_id;
-   * List<Mutation> mutations = new ArrayList<>();
-   * mutations.add(
-   *     Mutation.newInsertBuilder("Singers")
+   * Mutation mutation = Mutation.newInsertBuilder("Singers")
    *         .set("SingerId")
    *         .to(singerId)
    *         .set("FirstName")
    *         .to("Billy")
    *         .set("LastName")
    *         .to("Joel")
-   *         .build());
-   * dbClient.writeAtLeastOnce(mutations);
+   *         .build();
+   * dbClient.writeAtLeastOnce(Collections.singletonList(mutation));
    * }</pre>
    *
    * @return the timestamp at which the write was committed
