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![npm version](https://img.shields.io/node/v/xmysql.svg)
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[![Build Status](https://travis-ci.org/o1lab/xmysql.svg?branch=master)](https://travis-ci.org/o1lab/xmysql)
[![GitHub stars](https://img.shields.io/github/stars/o1lab/xmysql.svg?style=plastic)](https://github.com/o1lab/xmysql/stargazers)
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[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/o1lab/xmysql/master/LICENSE)
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# Xmysql : One command to generate REST APIs for any MySql database
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# Why this ?
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<p align="center">
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<img src="./assets/rick-and-morty.gif" alt="xmysql gif"/>
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</p>
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Generating REST APIs for a MySql database which does not follow conventions of
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frameworks such as rails, django, laravel etc is a small adventure that one like to avoid ..
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Hence this.
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# Setup and Usage
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```
npm install -g xmysql
```
```
xmysql -h localhost -u mysqlUsername -p mysqlPassword -d databaseName
```
```
http://localhost:3000
```
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<br>
That is it! Happy hackery!
<!-- Place this tag where you want the button to render. -->
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# Example : Generate REST APIs for [Magento](http://www.magereverse.com/index/magento-sql-structure/version/1-7-0-2)
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Powered by popular node packages : ([express](https://github.com/expressjs/express), [mysql](https://github.com/mysqljs/mysql)) => { [xmysql](https://github.com/o1lab/xmysql) }
<p align="center">
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<img src="./assets/log.gif" alt="xmysql gif" height="400" width="750"/>
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</p>
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# Features
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* Generates API for **ANY** MySql database
* Serves APIs irrespective of naming conventions of primary keys, foreign keys, tables etc
* CRUD : Usual suspects
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* Relations
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* Support for composite primary keys
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* Pagination
* Sorting
* Column filtering - Fields
* Row filtering - Where
* Group By, Having (as query params)
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* Group By, Having (as a separate route)
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* Aggregate functions
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* Run dynamic queries
* Upload single file
* Upload multiple files
* Download file
Use HTTP clients like [Postman](https://www.getpostman.com/) or [similar tools](https://chrome.google.com/webstore/search/http%20client?_category=apps) to invoke REST API calls
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____
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Download [node](https://nodejs.org/en/download/current/),
[mysql](https://dev.mysql.com/downloads/mysql/)
[(setup mysql)](https://dev.mysql.com/doc/mysql-getting-started/en/#mysql-getting-started-installing),
[sample database](https://dev.mysql.com/doc/employee/en/employees-installation.html) -
if you haven't on your system.
## Root URL
Root URL (localhost:3000/) returns all REST API urls for each table in schema.
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## CRUD APIs Usual Suspects
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName
* POST&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/:id
* PUT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/:id
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/findOne
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/count
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/:id/exists
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/groupby
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/aggregate
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/parentTable/:id/childTable
* DELETE&nbsp; /api/tableName/:id
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* POST&nbsp;&nbsp;&nbsp;&nbsp; /dynamic
## Other APIS
* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tableName/describe
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* GET&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; /api/tables
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## Relational Tables
xmysql identifies foreign key relations automatically and provides GET api.
```
/api/blogs/103/comments
```
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eg: blogs is parent table and comments is child table. API invocation will result in all comments for blog primary key 103.
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## Support for composite primary keys
#### ___ (three underscores)
```
/api/payments/103___JM555205
```
*___* : If there are multiple primary keys - seperate them by three underscores as shown
## Pagination
#### _p & _size
_p indicates page and _size indicates size of response rows
By default 20 records and max of 100 are returned per GET request on a table.
```
/api/payments?_size=50
```
```
/api/payments?_p=2
```
```
/api/payments?_p=2&_size=50
```
## Order by / Sorting
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#### ASC
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```
/api/payments?_sort=column1
```
eg: sorts ascending by column1
#### DESC
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```
/api/payments?_sort=-column1
```
eg: sorts descending by column1
#### Multiple fields in sort
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```
/api/payments?_sort=column1,-column2
```
eg: sorts ascending by column1 and descending by column2
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## Column filtering / Fields
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```
/api/payments?_fields=customerNumber,checkNumber
```
eg: gets only customerNumber and checkNumber in response of each record
```
/api/payments?_fields=-checkNumber
```
eg: gets all fields in table row but not checkNumber
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## Row filtering / Where
#### Comparison operators
```
eq - '='
ne - '!='
gt - '>'
gte - '>='
lt - '<'
lte - '<='
```
#### Use of comparison operators
```
/api/payments?_where=(checkNumber,eq,JM555205)
```
#### Logical operators
```
~or - 'or'
~and - 'and'
~xor - 'xor'
```
#### Use of logical operators
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eg: simple logical expression
```
/api/payments?_where=(checkNumber,eq,JM555205)~or(checkNumber,eq,OM314933)
```
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eg: complex logical expression
```
/api/payments?_where=((checkNumber,eq,JM555205)~or(checkNumber,eq,OM314933))~and(amount,gt,100)
```
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eg: logical expression with sorting(_sort), pagination(_p), column filtering (_fields)
```
/api/payments?_where=(amount,gte,1000)&_sort=-amount&p=2&&_fields=customerNumber
```
eg: filter of rows using _where is available for relational route URLs too.
```
/api/offices/1/employees?_where=(jobTitle,eq,Sales%20Rep)
```
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## FindOne
```
/api/tableName/findOne?_where=(id,eq,1)
```
Works similar to list but only returns top/one result. Used in conjunction with _where
## Count
```
/api/tableName/count
```
Returns number of rows in table
## Exists
```
/api/tableName/1/exists
```
Returns true or false depending on whether record exists
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## Group By, Having (as query params)
```
/api/offices?_groupby=country
```
eg: SELECT country,count(*) FROM offices GROUP BY country
```
/api/offices?_groupby=country&_having=(_count,gt,1)
```
eg: SELECT country,count(1) as _count FROM offices GROUP BY country having _count > 1
## Group By, Having (as a seperate route)
```
/api/offices/groupby?_fields=country
```
eg: SELECT country,count(*) FROM offices GROUP BY country
```
/api/offices/groupby?_fields=country,city
```
eg: SELECT country,city,count(*) FROM offices GROUP BY country,city
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```
/api/offices/groupby?_fields=country,city&_having=(_count,gt,1)
```
eg: SELECT country,city,count(*) as _count FROM offices GROUP BY country,city having _count > 1
## Group By, Order By
```
/api/offices/groupby?_fields=country,city&sort=city
```
eg: SELECT country,city,count(*) FROM offices GROUP BY country,city ORDER BY city ASC
```
/api/offices/groupby?_fields=country,city&sort=city,country
```
eg: SELECT country,city,count(*) FROM offices GROUP BY country,city ORDER BY city ASC, country ASC
```
/api/offices/groupby?_fields=country,city&sort=city,-country
```
eg: SELECT country,city,count(*) FROM offices GROUP BY country,city ORDER BY city ASC, country DESC
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## Aggregate functions :jack_o_lantern: :sunglasses:
```
http://localhost:3000/api/payments/aggregate?_fields=amount
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response body
[
{
"min_of_amount": 615.45,
"max_of_amount": 120166.58,
"avg_of_amount": 32431.645531,
"sum_of_amount": 8853839.23,
"stddev_of_amount": 20958.625377426568,
"variance_of_amount": 439263977.71130896
}
]
```
eg: retrieves all numeric aggregate of a column in a table
```
http://localhost:3000/api/orderDetails/aggregate?_fields=priceEach,quantityOrdered
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response body
[
{
"min_of_priceEach": 26.55,
"max_of_priceEach": 214.3,
"avg_of_priceEach": 90.769499,
"sum_of_priceEach": 271945.42,
"stddev_of_priceEach": 36.576811252187795,
"variance_of_priceEach": 1337.8631213781719,
"min_of_quantityOrdered": 6,
"max_of_quantityOrdered": 97,
"avg_of_quantityOrdered": 35.219,
"sum_of_quantityOrdered": 105516,
"stddev_of_quantityOrdered": 9.832243813502942,
"variance_of_quantityOrdered": 96.67301840816688
}
]
```
eg: retrieves numeric aggregate can be done for multiple columns too
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## Run dynamic queries
Dynamic queries on a database can be run by POST method to URL localhost:3000/dynamic
This is enabled only when using local mysql server i.e -h localhost or -h 127.0.0.1 option.
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Post body takes two fields : query and params.
>query: SQL query or SQL prepared query (ones with ?? and ?)
>params : parameters for SQL prepared query
```
POST /dynamic
{
"query": "select * from ?? limit 1,20",
"params": ["customers"]
}
```
## Upload single file
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```
POST /upload
```
Do POST operation on /upload url with multiform 'field' assigned to local file to be uploaded
eg: curl --form file=@/Users/me/Desktop/a.png http://localhost:3000/upload
returns uploaded file name else 'upload failed'
(Note: POSTMAN has issues with file uploading hence examples with curl)
## Upload multiple files
```
POST /uploads
```
Do POST operation on /uploads url with multiform 'fields' assigned to local files to be uploaded
> Notice 's' near /api/upload**s** and file**s** in below example
eg: curl --form files=@/Users/me/Desktop/a.png --form files=@/Users/me/Desktop/b.png http://localhost:3000/uploads
returns uploaded file names as string
## Download file
http://localhost:3000/download?name=fileName
> For upload and download of files -> you can specify storage folder using -s option
> Upload and download apis are available only with local mysql server
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## When to use ?
* You need just REST APIs without much hassle for (ANY) MySql database.
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* You are learning new frontend frameworks and need REST APIs for your MySql database.
* You are working on a demo, hacks etc
## When NOT to use ?
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* If you are in need of a full blown MVC framework, ACL, Authorisation etc - early days.
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### Command line options
```
Options:
-V, --version output the version number
-h, --host <n> hostname of mysql
-d, --database <n> database schema name
-u, --user <n> username of database / root by default
-p, --password <n> password of database / empty by default
-n, --portNumber <n> port number / 3000 by default
-s, --storageFolder <n> storage folder / current working dir by default
-h, --help output usage information
Examples:
$ xmysql -u username -p password -d databaseSchema
```
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# Docker
Simply build with `docker build -t xmysql .` and run with `docker run -p 3000:3000 -d xmysql`
The best way for testing is to run mysql in a docker container too and create a docker network, so that `xmysql` can access the `mysql` container with a name from docker network.
1. Create network
* `docker network create mynet`
2. Start mysql with docker name `some-mysql` and bind to docker network `mynet`
* `docker run --name some-mysql -p 3306:3306 --net mynet -e MYSQL_ROOT_PASSWORD=password -d mysql`
3. build xmysql container (if not done yet)
* `docker build -t xmysql .`
4. run xmysql and set env variable for `some-mysql` from step 2
* `docker run -p 3000:3000 -d -e DATABASE_HOST=some-mysql --net mynet xmysql`
You can also pass the environment variables to a file and use them as an option with docker like `docker run --env-file ./env.list -p 3000:3000 --net mynet -d xmysql`
environment variables which can be used:
```
ENV DATABASE_HOST 127.0.0.1
ENV DATABASE_USER root
ENV DATABASE_PASSWORD password
ENV DATABASE_NAME sakila
```