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// Copyright 2022 Google LLC
//
// 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.
// sample-metadata:
// title: Showcase how update data to a jsonb column in a PostgreSQL table.
// usage: node pg-jsonb-update-data.js <INSTANCE_ID> <DATABASE_ID> <PROJECT_ID>
'use strict';
function main(
instanceId = 'my-instance',
databaseId = 'my-database',
projectId = 'my-project-id',
) {
// [START spanner_postgresql_jsonb_update_data]
/**
* TODO(developer): Uncomment these variables before running the sample.
*/
// const instanceId = 'my-instance';
// const databaseId = 'my-database';
// const projectId = 'my-project-id';
// Imports the Google Cloud Spanner client library
const {Spanner} = require('@google-cloud/spanner');
// Instantiates a client
const spanner = new Spanner({
projectId: projectId,
});
async function pgJsonbUpdateData() {
// Gets a reference to a Cloud Spanner instance and database.
const instance = spanner.instance(instanceId);
const database = instance.database(databaseId);
// Instantiate Spanner table objects.
const venuesTable = database.table('venues');
const data = [
{
VenueId: '19',
VenueDetails: {rating: 9, open: true},
},
{
VenueId: '4',
// PG JSONB sorts first by key length and then lexicographically with equivalent key length
// and takes the last value in the case of duplicate keys
VenueDetails: `[
{
"name": null,
"available": true
},
{
"name": "room 2",
"available": false,
"name": "room 3"
},
{
"main hall": {
"description": "this is the biggest space",
"size": 200
}
}
]`,
},
{
VenueId: '42',
VenueDetails: {
name: null,
open: {
Monday: true,
Tuesday: false,
},
tags: ['large', 'airy'],
},
},
];
try {
await venuesTable.update(data);
console.log('Updated data.');
} catch (err) {
console.error('ERROR:', err);
} finally {
// Close the database when finished.
await database.close();
}
}
pgJsonbUpdateData();
// [END spanner_postgresql_jsonb_update_data]
}
process.on('unhandledRejection', err => {
console.error(err.message);
process.exitCode = 1;
});
main(...process.argv.slice(2));