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UpdateJsonbDataSample.java
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UpdateJsonbDataSample.java
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/*
* Copyright 2022 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.
*/
package com.example.spanner;
// [START spanner_postgresql_jsonb_update_data]
import com.google.cloud.spanner.DatabaseClient;
import com.google.cloud.spanner.DatabaseId;
import com.google.cloud.spanner.Mutation;
import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.Value;
import com.google.common.collect.ImmutableList;
class UpdateJsonbDataSample {
static void updateJsonbData() {
// TODO(developer): Replace these variables before running the sample.
String projectId = "my-project";
String instanceId = "my-instance";
String databaseId = "my-database";
try (Spanner spanner =
SpannerOptions.newBuilder().setProjectId(projectId).build().getService()) {
DatabaseClient client =
spanner.getDatabaseClient(DatabaseId.of(projectId, instanceId, databaseId));
updateJsonbData(client);
}
}
static void updateJsonbData(DatabaseClient client) {
// PG JSONB takes the last value in the case of duplicate keys.
// PG JSONB sorts first by key length and then lexicographically with
// equivalent key length.
client.write(
ImmutableList.of(
Mutation.newInsertOrUpdateBuilder("Venues")
.set("VenueId")
.to(4L)
.set("VenueDetails")
.to(
Value.pgJsonb(
"[{\"name\":\"room 1\",\"open\":true,\"name\":\"room 3\"},"
+ "{\"name\":\"room 2\",\"open\":false}]"))
.build(),
Mutation.newInsertOrUpdateBuilder("Venues")
.set("VenueId")
.to(19L)
.set("VenueDetails")
.to(Value.pgJsonb("{\"rating\":9,\"open\":true}"))
.build(),
Mutation.newInsertOrUpdateBuilder("Venues")
.set("VenueId")
.to(42L)
.set("VenueDetails")
.to(
Value.pgJsonb(
"{\"name\":null,"
+ "\"open\":{\"Monday\":true,\"Tuesday\":false},"
+ "\"tags\":[\"large\",\"airy\"]}"))
.build()));
System.out.println("Venues successfully updated");
}
}
// [END spanner_postgresql_jsonb_update_data]