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samples(spanner): add sample for Proto columns (#3110)
* samples(spanner): add sample for Proto columns * samples(spanner): update proto generated files * samples(spanner): update generated files * samples(spanner): update checkstyle config * 🦉 Updates from OwlBot post-processor See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md --------- Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
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76 changes: 76 additions & 0 deletions
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samples/snippets/src/main/java/com/example/spanner/AddProtoColumnSample.java
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| /* | ||
| * Copyright 2024 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package com.example.spanner; | ||
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|
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| // [START spanner_add_proto_type_columns] | ||
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| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.cloud.spanner.admin.database.v1.DatabaseAdminClient; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.protobuf.ByteString; | ||
| import com.google.spanner.admin.database.v1.DatabaseName; | ||
| import com.google.spanner.admin.database.v1.UpdateDatabaseDdlRequest; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.util.concurrent.ExecutionException; | ||
|
|
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| class AddProtoColumnSample { | ||
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| static void addProtoColumn() throws InterruptedException, ExecutionException, IOException { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| String projectId = "my-project"; | ||
| String instanceId = "my-instance"; | ||
| String databaseId = "my-database"; | ||
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| addProtoColumn(projectId, instanceId, databaseId); | ||
| } | ||
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| static void addProtoColumn(String projectId, String instanceId, String databaseId) | ||
| throws InterruptedException, ExecutionException, IOException { | ||
| InputStream in = | ||
| AddProtoColumnSample.class | ||
| .getClassLoader() | ||
| .getResourceAsStream("com/example/spanner/descriptors.pb"); | ||
| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService(); | ||
| DatabaseAdminClient databaseAdminClient = spanner.createDatabaseAdminClient()) { | ||
| UpdateDatabaseDdlRequest request = | ||
| UpdateDatabaseDdlRequest.newBuilder() | ||
| .setDatabase(DatabaseName.of(projectId, instanceId, databaseId).toString()) | ||
| .addAllStatements( | ||
| ImmutableList.of( | ||
| "CREATE PROTO BUNDLE (" | ||
| + "examples.spanner.music.SingerInfo," | ||
| + "examples.spanner.music.Genre," | ||
| + ")", | ||
| "ALTER TABLE Singers ADD COLUMN SingerInfo examples.spanner.music.SingerInfo", | ||
| "ALTER TABLE Singers ADD COLUMN " | ||
| + "SingerInfoArray ARRAY<examples.spanner.music.SingerInfo>", | ||
| "ALTER TABLE Singers ADD COLUMN SingerGenre examples.spanner.music.Genre", | ||
| "ALTER TABLE Singers ADD COLUMN " | ||
| + "SingerGenreArray ARRAY<examples.spanner.music.Genre>")) | ||
| .setProtoDescriptors(ByteString.readFrom(in)) | ||
| .build(); | ||
| // Wait for the operation to finish. | ||
| // This will throw an ExecutionException if the operation fails. | ||
| databaseAdminClient.updateDatabaseDdlAsync(request).get(); | ||
| System.out.printf("Added Proto columns %n"); | ||
| } | ||
| } | ||
| } | ||
| // [END spanner_add_proto_type_columns] |
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samples/snippets/src/main/java/com/example/spanner/QueryWithProtoParameterSample.java
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| /* | ||
| * Copyright 2024 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
|
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| package com.example.spanner; | ||
|
|
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| // [START spanner_query_with_proto_types_parameter] | ||
| import com.example.spanner.SingerProto.Genre; | ||
| import com.example.spanner.SingerProto.SingerInfo; | ||
| import com.google.cloud.spanner.DatabaseClient; | ||
| import com.google.cloud.spanner.DatabaseId; | ||
| import com.google.cloud.spanner.ResultSet; | ||
| import com.google.cloud.spanner.Spanner; | ||
| import com.google.cloud.spanner.SpannerOptions; | ||
| import com.google.cloud.spanner.Statement; | ||
|
|
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| class QueryWithProtoParameterSample { | ||
|
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| static void queryWithProtoParameter() { | ||
| // TODO(developer): Replace these variables before running the sample. | ||
| String projectId = "my-project"; | ||
| String instanceId = "my-instance"; | ||
| String databaseId = "my-database"; | ||
|
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| try (Spanner spanner = | ||
| SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) { | ||
| DatabaseClient client = | ||
| spanner.getDatabaseClient(DatabaseId.of(projectId, instanceId, databaseId)); | ||
| queryWithProtoParameter(client); | ||
| } | ||
| } | ||
|
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| static void queryWithProtoParameter(DatabaseClient client) { | ||
| Statement statement = | ||
| Statement.newBuilder( | ||
| "SELECT SingerId, SingerInfo, SingerInfo.nationality, SingerInfoArray, " | ||
| + "SingerGenre, SingerGenreArray FROM Singers " | ||
| + "WHERE SingerInfo.nationality=@country and SingerGenre=@singerGenre") | ||
| .bind("country") | ||
| .to("Country2") | ||
| .bind("singerGenre") | ||
| .to(Genre.FOLK) | ||
| .build(); | ||
| try (ResultSet resultSet = client.singleUse().executeQuery(statement)) { | ||
| while (resultSet.next()) { | ||
| System.out.printf( | ||
| "%d %s %s %s %s %s%n", | ||
| resultSet.getLong("SingerId"), | ||
| resultSet.getProtoMessage("SingerInfo", SingerInfo.getDefaultInstance()), | ||
| resultSet.getString("nationality"), | ||
| resultSet.getProtoMessageList("SingerInfoArray", SingerInfo.getDefaultInstance()), | ||
| resultSet.getProtoEnum("SingerGenre", Genre::forNumber), | ||
| resultSet.getProtoEnumList("SingerGenreArray", Genre::forNumber)); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| // [END spanner_query_with_proto_types_parameter] |
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