IBM® DB2® is the database of choice for robust, enterprise-wide solutions handling high-volume workloads.
It is optimized to deliver industry-leading performance while lowering costs. The loopback-connector-db2 module is the LoopBack connector for DB2.
The LoopBack DB2 connector supports:
Enter the following in the top-level directory of your LoopBack application:
$ npm install loopback-connector-db2 --save
The --save option adds the dependency to the application’s package.json file.
Use the data source generator to add the DB2 data source to your application.
The entry in the application’s server/datasources.json will look something like this:
"mydb": {
"name": "mydb",
"connector": "db2"
}
Edit server/datasources.json to add other supported properties as required:
"mydb": {
"name": "mydb",
"connector": "db2",
"username": <username>,
"password": <password>,
"database": <database name>,
"hostname": <db2 server hostname>,
"port": <port number>
}
The following table describes the connector properties.
| Property | Type | Description |
|---|---|---|
| database | String | Database name |
| schema | String | Specifies the default schema name that is used to qualify unqualified database objects in dynamically prepared SQL statements. The value of this property sets the value in the CURRENT SCHEMA special register on the database server. The schema name is case-sensitive, and must be specified in uppercase characters |
| username | String | DB2 Username |
| password | String | DB2 password associated with the username above |
| hostname | String | DB2 server hostname or IP address |
| port | String | DB2 server TCP port number |
| useLimitOffset | Boolean | LIMIT and OFFSET must be configured on the DB2 server before use (compatibility mode) |
| supportDashDB | Boolean | Create ROW ORGANIZED tables to support dashDB. |
Alternatively, you can create and configure the data source in JavaScript code. For example:
var DataSource = require('loopback-datasource-juggler').DataSource;
var DB2 = require('loopback-connector-db2');
var config = {
username: process.env.DB2_USERNAME,
password: process.env.DB2_PASSWORD,
hostname: process.env.DB2_HOSTNAME,
port: 50000,
database: 'SQLDB',
};
var db = new DataSource(DB2, config);
var User = db.define('User', {
name: { type: String },
email: { type: String },
});
db.autoupdate('User', function(err) {
if (err) {
console.log(err);
return;
}
User.create({
name: 'Tony',
email: 'tony@t.com',
}, function(err, user) {
console.log(err, user);
});
User.find({ where: { name: 'Tony' }}, function(err, users) {
console.log(err, users);
});
User.destroyAll(function() {
console.log('example complete');
});
});
db2admin by default but it could be modified.default DB2 and Database Client Interface Selection Wizard, and proceed with the configuration.DB2COPY1.sample, and schema name is STRONGLOOP....\IBM\SQLLIB\BIN (In mac, it should be ` /Users/>set db2instance=server1
>db2 connect to sample
>db2 set schema to STRONGLOOP
loopback-connector-db2\test\init.js, and insert the proper credentials.npm test.