DocumentDB JavaScript API: queryDatabases is not a function

Question

I am creating a service for Azure Functions written in JavaScript/Node.js and I am getting the below error when attempting to access the function DocumentClient.queryDatabases. I have the correct references installed in Visual Studio Code and through Intellisense can see the queryDatabases method through the following:

var client = require('documentdb').DocumentClient;
client.queryDatabases(...);

Any ideas why the debugger is blowing up with the error?

Exception has occurred: TypeError
TypeError: client.queryDatabases is not a function
    at Object.getOrCreateDatabase (/Users/.../Documents/.../UserModel.js:23:16)
    at Object.<anonymous> (/Users/.../Documents/.../Test.js:5:11)
    at Module._compile (module.js:638:14)
    at Object.Module._extensions..js (module.js:652:10)
    at Module.load (module.js:560:32)
    at tryModuleLoad (module.js:503:12)
    at Function.Module._load (module.js:495:3)
    at Function.Module.runMain (module.js:682:10)
    at startup (bootstrap_node.js:191:16)
    at bootstrap_node.js:613:3

Aaron Chen · Accepted Answer · 2017-12-04 05:35:22Z

1

First, you need to initialize the client with your DocumentDB host and auth key. And then call the function via this client.

Example:

var DocumentDBClient = require("documentdb").DocumentClient;

var endpoint = '<host>';
var primaryKey = '<authKey>';
var client = new DocumentDBClient(endpoint, { masterKey: primaryKey });

var querySpec = {
    query: 'SELECT * FROM root r WHERE  r.id = @id',
    parameters: [
        {
            name: '@id',
            value: databaseId
        }
    ]
};

client.queryDatabases(querySpec).toArray(function (err, results) {
    if(err) return console.log(err);
    console.log(results);
});

answered Dec 4, 2017 at 5:35

Aaron Chen

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