nikhilbytes / sqltableToJSON

A java API to convert un-ordered relational table data into JSON

sqltableToJSON

sqltabletoJson is a API written in java,which provides a architecture which enables you to convert relation table data(Mysql/orcale,Sql server etc) to JSON formate.

USECASE

Assume, you have a scenerio such that you have to frequently configure third party JS object without changing the code in live server as for example creating several Highchart object for populating chart without stopping the server and without predefining any json for it.other good example can be any adhoc json which is difficult to keep a equivelent Java POJO class.

EXAMPLE

Take this json object

{ "a":"hii", "b":"I am here", "c":2, "d":["to","convert","adhoc","json"] }

Equivelant POJO Java class

public Class MypojoForJson
{
 private String a;

 public String getA() { return this.a; }

 public void setA(String a) { this.a = a; }

 private String b;

 public String getB() { return this.b; }

 public void setB(String b) { this.b = b; }

 private int c;

 public int getC() { return this.c; }

 public void setC(int c) { this.c = c; }

 private ArrayList<String> d;

 public ArrayList<String> getD() { return this.d; }

 public void setD(ArrayList<String> d) { this.d = d; }
}

IF it json keep changing,how will you define it ?

sqltableToJSON API provides a way to do it. you have to create two table in your current relational DB and define your object in any insertion order.

Table 1- jsonproperty

It defines your several JSON properties as object,array,integer,float,string,boolean

id	propertyName	propertytype
1	chartObjet	object
2	type	string
3	categories	array
4	arrayofobject	array
5	simpleobject	object

Table 2- jsonInternalrelation

It defines the parent to child relationship among properties defined in table jsonproperty. column value will be null ,in case of object.if you have array of string or integer,value will be defined as comma seperated values as 'see','the','color',2 will be converted as ['see','the','color',2] but in case of array of object define array as parent of each object with null value.no need to maintain any insertion order.

id	idJsonproperty(foriegn key)	idJsonpropertyParent(foriegn key)	value
1	1	null	null (Root object starts here)
2	2	1	'i am here'
3	3	1	'see','the','color',2
4	5	1	null
5	4	5	null

HOW TO USE

1. import SqltableToJSON class in your class
2. create tables and getJson(INT) procedure.
3. call static method SqltableToJSON.getJSON(1); (Parameter is id of Root object in jsonproperty table ). IT'S DONE