Service OData v4 requests from a TYPEORM.
The OData V4 TYPEORM Connector provides functionality to convert the various types of OData segments into SQL query statements, that you can execute over a TYPEORM.
- Create high speed, standard compliant data sharing APIs
//example request: GET /api/users?$filter=id eq 42&$select=id,name
import express from 'express';
import { odataQuery } from 'odata-v4-typeorm';
import { getRepository } from 'typeorm';
import { User } from '../entities/user';
const app = express();
const usersRepository = getRepository(User);
app.get('/api/users', odataQuery(usersRepository));
const port = 3001;
app.listen(port, () => console.log(`Example app listening on port ${port}!`));import express from 'express';
import { executeQuery } from 'odata-v4-typeorm';
import { getRepository } from 'typeorm';
import { User } from '../entities/user';
const app = express();
app.get('/api/users', async (req, res) => {
try {
const usersRepository = getRepository(User);
const data = await executeQuery(usersRepository, req.query);
return res.status(200).json(data);
} catch (e) {
return res.status(500).json({message: 'Internal server error.'});
}
});
const port = 3001;
app.listen(port, () => console.log(`Example app listening on port ${port}!`));import express from 'express';
import { executeQuery } from 'odata-v4-typeorm';
import { getRepository } from 'typeorm';
import { User } from '../entities/user';
const app = express();
app.get('/api/users', async (req, res) => {
try {
const queryBuilder = getRepository(User)
.createQueryBuilder("user")
.where("user.roleName = :roleName", { roleName: 'admin' });
const data = await executeQuery(queryBuilder, req.query);
return res.status(200).json(data);
} catch (e) {
return res.status(500).json({message: 'Internal server error.'});
}
});
const port = 3001;
app.listen(port, () => console.log(`Example app listening on port ${port}!`));import { createFilter } from 'odata-v4-typeorm'
//example request: GET /api/Users?$filter=Id eq 42
app.get("/api/Users", (req: Request, res: Response) => {
const filter = createFilter(req.query.$filter);
// connection instance from pg module
connection.query(`SELECT * FROM Users WHERE ${filter.where}`, filter.parameters, function(err, result){
res.json({
'@odata.context': req.protocol + '://' + req.get('host') + '/api/$metadata#Users',
value: result.rows
});
});
});Advanced TypeScript example available here.
var createFilter = require('odata-v4-typeorm').createFilter;
app.get("/api/Users", function(req, res) {
var filter = createFilter(req.query.$filter);
// connection instance from pg module
connection.query(filter.from("Users"), filter.parameters, function(err, result){
res.json({
'@odata.context': req.protocol + '://' + req.get('host') + '/api/$metadata#Users',
value: result.rows
});
});
})- $filter
- $select
- $skip
- $top
- $orderby
- $expand
- $count
If you have any questions, please don’t hesitate to contact me.
- skype: andryuha49.
- https://www.linkedin.com/in/andriy-zherdiy/
