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remove Xql - abandoned for now
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![npm version](https://img.shields.io/node/v/xmysql.svg)
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# Xmysql : One command to generate REST APIs for any MySql database
# Why this ?
<p align="center">
<img src="./assets/rick-and-morty.gif" alt="xmysql gif"/>
</p>
Generating REST APIs for a MySql database which does not follow conventions of
frameworks such as rails, django, laravel etc is a small adventure that one like to avoid ..
Hence this.
# Setup and Usage
```
npm install -g xmysql
```
```
xmysql -h localhost -u mysqlUsername -p mysqlPassword -d databaseName
```
```
http://localhost:3000
```
<br>
That is it! Simple and minimalistic!
Happy hackery!
<!-- Place this tag where you want the button to render. -->
# Example : Generate REST APIs for [Magento](http://www.magereverse.com/index/magento-sql-structure/version/1-7-0-2)
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">
<img src="./assets/log.gif" alt="xmysql gif" height="400" width="750"/>
</p>
<!-- AddToAny BEGIN -->
<div align="right">
<h3>Boost Your Hacker Karma By Sharing : </h3>
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</div>
<!-- AddToAny END -->
# Features
* Generates API for **ANY** MySql database :fire::fire:
* Serves APIs irrespective of naming conventions of primary keys, foreign keys, tables etc :fire::fire:
* Support for composite primary keys :fire::fire:
* REST API Usual suspects : CRUD, List, FindOne, Count, Exists, Distinct
* Bulk insert, Bulk delete, Bulk read :fire:
* Relations
* Pagination
* Sorting
* Column filtering - Fields :fire:
* Row filtering - Where :fire:
* Aggregate functions
* Group By, Having (as query params) :fire::fire:
* Group By, Having (as a separate API) :fire::fire:
* Multiple group by in one API :fire::fire::fire::fire:
* Chart API for numeric column :fire::fire::fire::fire::fire::fire:
* Auto Chart API - (a gift for lazy while prototyping) :fire::fire::fire::fire::fire::fire:
* [XJOIN - (Supports any number of JOINS)](#xjoin) :fire::fire::fire::fire::fire::fire::fire::fire::fire:
* Supports views
* Prototyping (features available when using local MySql server only)
* Run dynamic queries :fire::fire::fire:
* 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
____
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.
## API Overview
| HTTP Type | API URL | Comments |
|-----------|----------------------------------|---------------------------------------------------------
| GET | / | Gets all REST APIs |
| GET | /api/tableName | Lists rows of table |
| POST | /api/tableName | Create a new row |
| PUT | /api/tableName | Replaces existing row with new row |
| POST :fire:| /api/tableName/bulk | Create multiple rows - send object array in request body|
| GET :fire:| /api/tableName/bulk | Lists multiple rows - /api/tableName/bulk?_ids=1,2,3 |
| DELETE :fire:| /api/tableName/bulk | Deletes multiple rows - /api/tableName/bulk?_ids=1,2,3 |
| GET | /api/tableName/:id | Retrieves a row by primary key |
| PATCH | /api/tableName/:id | Updates row element by primary key |
| DELETE | /api/tableName/:id | Delete a row by primary key |
| GET | /api/tableName/findOne | Works as list but gets single record matching criteria |
| GET | /api/tableName/count | Count number of rows in a table |
| GET | /api/tableName/distinct | Distinct row(s) in table - /api/tableName/distinct?_fields=col1|
| GET | /api/tableName/:id/exists | True or false whether a row exists or not |
| GET | [/api/parentTable/:id/childTable](#relational-tables) | Get list of child table rows with parent table foreign key |
| GET :fire:| [/api/tableName/aggregate](#aggregate-functions) | Aggregate results of numeric column(s) |
| GET :fire:| [/api/tableName/groupby](#group-by-having-as-api) | Group by results of column(s) |
| GET :fire:| [/api/tableName/ugroupby](#union-of-multiple-group-by-statements) | Multiple group by results using one call |
| GET :fire:| [/api/tableName/chart](#chart) | Numeric column distribution based on (min,max,step) or(step array) or (automagic)|
| GET :fire:| [/api/tableName/autochart](#autochart) | Same as Chart but identifies which are numeric column automatically - gift for lazy while prototyping|
| GET :fire:| [/api/xjoin](#xjoin) | handles join |
| GET :fire:| [/dynamic](#run-dynamic-queries) | execute dynamic mysql statements with params |
| GET :fire:| [/upload](#upload-single-file) | upload single file |
| GET :fire:| [/uploads](#upload-multiple-files) | upload multiple files |
| GET :fire:| [/download](#download-file) | download a file |
| GET | /api/tableName/describe| describe each table for its columns |
| GET | /api/tables| get all tables in database |
## Relational Tables
xmysql identifies foreign key relations automatically and provides GET api.
```
/api/blogs/103/comments
```
eg: blogs is parent table and comments is child table. API invocation will result in all comments for blog primary key 103.
[:arrow_heading_up:](#api-overview)
## 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
#### ASC
```
/api/payments?_sort=column1
```
eg: sorts ascending by column1
#### DESC
```
/api/payments?_sort=-column1
```
eg: sorts descending by column1
#### Multiple fields in sort
```
/api/payments?_sort=column1,-column2
```
eg: sorts ascending by column1 and descending by column2
## Column filtering / Fields
```
/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
## Row filtering / Where
#### Comparison operators
```
eq - '=' - (colName,eq,colValue)
ne - '!=' - (colName,ne,colValue)
gt - '>' - (colName,gt,colValue)
gte - '>=' - (colName,gte,colValue)
lt - '<' - (colName,lt,colValue)
lte - '<=' - (colName,lte,colValue)
is - 'is' - (colName,is,true/false/null)
in - 'in' - (colName,in,val1,val2,val3,val4)
bw - 'between' - (colName,bw,val1,val2)
like - 'like' - (colName,like,~name) note: use ~ in place of %
nlike - 'not like' - (colName,nlike,~name) note: use ~ in place of %
```
#### Use of comparison operators
```
/api/payments?_where=(checkNumber,eq,JM555205)~or((amount,gt,200)~and(amount,lt,2000))
```
#### Logical operators
```
~or - 'or'
~and - 'and'
~xor - 'xor'
```
#### Use of logical operators
eg: simple logical expression
```
/api/payments?_where=(checkNumber,eq,JM555205)~or(checkNumber,eq,OM314933)
```
eg: complex logical expression
```
/api/payments?_where=((checkNumber,eq,JM555205)~or(checkNumber,eq,OM314933))~and(amount,gt,100)
```
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)
```
## FindOne
```
/api/tableName/findOne?_where=(id,eq,1)
```
Works similar to list but only returns top/one result. Used in conjunction with _where
[:arrow_heading_up:](#api-overview)
## Count
```
/api/tableName/count
```
Returns number of rows in table
[:arrow_heading_up:](#api-overview)
## Exists
```
/api/tableName/1/exists
```
Returns true or false depending on whether record exists
[:arrow_heading_up:](#api-overview)
## Group By Having as query params
[:arrow_heading_up:](#api-overview)
```
/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 API
[:arrow_heading_up:](#api-overview)
```
/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
```
/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
[:arrow_heading_up:](#api-overview)
```
/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
## Aggregate functions
[:arrow_heading_up:](#api-overview)
```
http://localhost:3000/api/payments/aggregate?_fields=amount
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
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
## Union of multiple group by statements
[:arrow_heading_up:](#api-overview)
:fire::fire:**[ HOTNESS ALERT ]**
Group by multiple columns in one API call using _fields query params - comes really handy
```
http://localhost:3000/api/employees/ugroupby?_fields=jobTitle,reportsTo
response body
{
"jobTitle":[
{
"Sales Rep":17
},
{
"President":1
},
{
"Sale Manager (EMEA)":1
},
{
"Sales Manager (APAC)":1
},
{
"Sales Manager (NA)":1
},
{
"VP Marketing":1
},
{
"VP Sales":1
}
],
"reportsTo":[
{
"1002":2
},
{
"1056":4
},
{
"1088":3
},
{
"1102":6
},
{
"1143":6
},
{
"1621":1
}
{
"":1
},
]
}
```
## Chart
[:arrow_heading_up:](#api-overview)
:fire::fire::fire::fire::fire::fire: **[ HOTNESS ALERT ]**
Chart API returns distribution of a numeric column in a table
It comes in **SEVEN** powerful flavours
1. Chart : With min, max, step in query params :fire::fire:
[:arrow_heading_up:](#api-overview)
This API returns the number of rows where amount is between (0,25000), (25001,50000) ...
```
/api/payments/chart?_fields=amount&min=0&max=131000&step=25000
Response
[
{
"amount": "0 to 25000",
"_count": 107
},
{
"amount": "25001 to 50000",
"_count": 124
},
{
"amount": "50001 to 75000",
"_count": 30
},
{
"amount": "75001 to 100000",
"_count": 7
},
{
"amount": "100001 to 125000",
"_count": 5
},
{
"amount": "125001 to 150000",
"_count": 0
}
]
```
2. Chart : With step array in params :fire::fire:
[:arrow_heading_up:](#api-overview)
This API returns distribution between the step array specified
```
/api/payments/chart?_fields=amount&steparray=0,10000,20000,70000,140000
Response
[
{
"amount": "0 to 10000",
"_count": 42
},
{
"amount": "10001 to 20000",
"_count": 36
},
{
"amount": "20001 to 70000",
"_count": 183
},
{
"amount": "70001 to 140000",
"_count": 12
}
]
```
3. Chart : With step pairs in params :fire::fire:
[:arrow_heading_up:](#api-overview)
This API returns distribution between each step pair
```
/api/payments/chart?_fields=amount&steppair=0,50000,40000,100000
Response
[
{"amount":"0 to 50000","_count":231},
{"amount":"40000 to 100000","_count":80}
]
```
4. Chart : with no params :fire::fire:
[:arrow_heading_up:](#api-overview)
This API figures out even distribution of a numeric column in table and returns the data
```
/api/payments/chart?_fields=amount
Response
[
{
"amount": "-9860 to 11100",
"_count": 45
},
{
"amount": "11101 to 32060",
"_count": 91
},
{
"amount": "32061 to 53020",
"_count": 109
},
{
"amount": "53021 to 73980",
"_count": 16
},
{
"amount": "73981 to 94940",
"_count": 7
},
{
"amount": "94941 to 115900",
"_count": 3
},
{
"amount": "115901 to 130650",
"_count": 2
}
]
```
5. Chart : range, min, max, step in query params :fire::fire:
[:arrow_heading_up:](#api-overview)
This API returns the number of rows where amount is between (0,25000), (0,50000) ... (0,maxValue)
Number of records for amount is counted from min value to extended *Range* instead of incremental steps
```
/api/payments/chart?_fields=amount&min=0&max=131000&step=25000&range=1
Response
[
{
"amount": "0 to 25000",
"_count": 107
},
{
"amount": "0 to 50000",
"_count": 231
},
{
"amount": "0 to 75000",
"_count": 261
},
{
"amount": "0 to 100000",
"_count": 268
},
{
"amount": "0 to 125000",
"_count": 273
}
]
```
6. Range can be specified with step array like below
```
/api/payments/chart?_fields=amount&steparray=0,10000,20000,70000,140000&range=1
[
{
"amount": "0 to 10000",
"_count": 42
},
{
"amount": "0 to 20000",
"_count": 78
},
{
"amount": "0 to 70000",
"_count": 261
},
{
"amount": "0 to 140000",
"_count": 273
}
]
```
7. Range can be specified without any step params like below
```
/api/payments/chart?_fields=amount&range=1
[
{
"amount": "-9860 to 11100",
"_count": 45
},
{
"amount": "-9860 to 32060",
"_count": 136
},
...
]
```
Please Note:
_fields in Chart API can only take numeric column as its argument.
## Autochart
Identifies numeric columns in a table which are not any sort of key and applies chart API as before -
feels like magic when there are multiple numeric columns in table while hacking/prototyping and you invoke this API.
```
http://localhost:3000/api/payments/autochart
[
{
"column": "amount",
"chart": [
{
"amount": "-9860 to 11100",
"_count": 45
},
{
"amount": "11101 to 32060",
"_count": 91
},
{
"amount": "32061 to 53020",
"_count": 109
},
{
"amount": "53021 to 73980",
"_count": 16
},
{
"amount": "73981 to 94940",
"_count": 7
},
{
"amount": "94941 to 115900",
"_count": 3
},
{
"amount": "115901 to 130650",
"_count": 2
}
]
}
]
```
## XJOIN
### Xjoin query params and values:
```
_join : List of tableNames alternated by type of join to be made (_j, _ij,_ lj, _rj)
alias.tableName : TableName as alias
_j : Join [ _j => join, _ij => ij, _lj => left join , _rj => right join)
_onNumber : Number 'n' indicates condition to be applied for 'n'th join between (n-1) and 'n'th table in list
```
#### Simple example of two table join:
Sql join query:
```sql
SELECT *
FROM productlines as pl
JOIN products as pr
ON pl.productline = pr.productline
```
Equivalent xjoin query API:
```
/api/xjoin?_join=pl.productlines,_j,pr.products&_on1=(pl.productline,eq,pr.productline)
```
#### Multiple tables join
Sql join query:
```sql
SELECT *
FROM productlines as pl
JOIN products as pr
ON pl.productline = pr.productline
JOIN orderdetails as ord
ON pr.productcode = ord.productcode
```
Equivalent xjoin query API:
```
/api/xjoin?_join=pl.productlines,_j,pr.products,_j,ord.orderDetails&_on1=(pl.productline,eq,pr.productline)&_on2=(pr.productcode,eq,ord.productcode)
```
**Explanation:**
> pl.productlines => productlines as pl
> _j => join
> pr.products => products as pl
> _on1 => join condition between productlines and products => (pl.productline,eq,pr.productline)
> _on2 => join condition between products and orderdetails => (pr.productcode,eq,ord.productcode)
Example to use : _fields, _where, _p, _size in query params
```
/api/xjoin?_join=pl.productlines,_j,pr.products&_on1=(pl.productline,eq,pr.productline)&_fields=pl.productline,pr.productName&_size=2&_where=(productName,like,1972~)
```
## Run dynamic queries
[:arrow_heading_up:](#api-overview)
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.
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"]
}
```
POST /dynamic URL can have any suffix to it - which can be helpful in prototyping
eg:
```
POST /dynamic/weeklyReport
```
```
POST /dynamic/user/update
```
## Upload single file
[:arrow_heading_up:](#api-overview)
```
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
[:arrow_heading_up:](#api-overview)
```
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
[:arrow_heading_up:](#api-overview)
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
## When to use ?
[:arrow_heading_up:](#api-overview)
* You need just REST APIs for (ANY) MySql database at blink of an eye (literally).
* 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 ?
[:arrow_heading_up:](#api-overview)
* If you are in need of a full blown MVC framework, ACL, Validations, Authorisation etc - its early days please watch/star this repo to keep a tab on progress.
### Command line options
[:arrow_heading_up:](#api-overview)
```
Options:
-V, --version output the version number
-h, --host <n> hostname -> localhost by default
-u, --user <n> username of database -> root by default
-p, --password <n> password of database -> empty by default
-d, --database <n> database schema name
-n, --portNumber <n> port number for app -> 3000 by default
-a, --apiPrefix <n>, api url prefix -> /api/ by default
-s, --storageFolder <n> storage folder -> current working dir by default (available only with local)
-i, --ignoreTables <n> comma separated table names to ignore
-h, --help output usage information
Examples:
$ xmysql -u username -p password -d databaseSchema
```
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# Docker
[:arrow_heading_up:](#api-overview)
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
```
# Tests : setup on local machine
[:arrow_heading_up:](#api-overview)
Login to mysql shell
```
mysql> create database classicmodels
mysql> use classicmodels
mysql> source path_to/xmysql/tests/sample.sql
```
```
$ mocha tests/*.js --exit
```
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