# Transformer (JOLT) - (Deprecated)
**Transformer (JOLT)** allows the manipulation of a JSON through JOLT technology.
The component is useful to:
* modify the structure of a JSON and keep its values;
* add, extract, and remove data from a JSON;
* sort the structure of a JSON;
* modify the values contained in a JSON through functions, such as text manipulation, mathematical calculations, and conversions between data types, among others;
* access and manipulate data from arrays.
Learn more about [JOLT applications](broken://pages/1MdhGuzZOTmoeEJWZJtj).
## Parameters
Take a look at the configuration options for the component. Parameters supported by [Double Braces expressions](/documentation/connectors-and-triggers/double-braces/overview.md) are marked with `(DB)`.
Parameter
Description
Default value
Data type
Type Properties
Area to include the JOLT transformations.
N/A
String
Example of a configured **Transformer (JOLT)**:
{% hint style="info" %}
The JSON configured in **Type Properties** doesn’t represent the JSON to be manipulated, but the JOLT transformation itself. The JOLT itself uses a JSON structure for the transformation construction, which will interpret the JSON received by the **Transformer (JOLT)** component.
{% endhint %}
## JOLT operations
### Shift
Used to change the structure of a JSON, keeping the values contained in that same JSON.
**Example:**
Input
```
{
"body": {
"userName": "John"
}
}
```
Transformation
```
[
{
"operation": "shift",
"spec": {
"body": {
"userName": "data.user_name"
}
}
}
]
```
Output
```
{
"data" : {
"user_name" : "John"
}
}
```
### **Default**
Used to add new fields or objects in a JSON, if they don't already exist.
**Example:**
Input
```
{
"body": {
"userName": "John"
}
}
```
Transformation
```
[
{
"operation": "default",
"spec": {
"body": {
"email": "default@email.com"
}
}
}
]
```
Output
```
{
"body": {
"userName": "John",
"email": "default@email.com"
}
}
```
### **Remove**
Used to remove fields or objects from a JSON.
**Example:**
Input
```
{
"body": {
"userName": "John",
"email": "default@email.com"
}
}
```
Transformation
```
[
{
"operation": "remove",
"spec": {
"body": {
"email": ""
}
}
}
]
```
Output
```
{
"body" : {
"userName" : "John"
}
}
```
### **Sort**
Used to sort fields and objects in a JSON in alphabetical order.
**Example:**
Input
```
{
"employee": {
"phone": "999999999",
"name": "Sort Employee",
"birthDate": "1980-01-01",
"role": "analyst"
}
}
```
Transformation:
```
[
{
"operation": "sort"
}
]
```
Output
```
{
"employee" : {
"birthDate" : "1980-01-01",
"name" : "Sort Employee",
"phone" : "999999999",
"role" : "analyst"
}
}
```
### **Cardinality**
Used to transform simple fields and objects into arrays and vice versa.
**Example:**
Input
```
{
"products": {
"name": "Product A",
"id": "123-A",
"value": 10
}
}
```
Transformation
```
[
{
"operation": "cardinality",
"spec": {
"products": "MANY"
}
}
]
```
Output
```
{
"products" : [ {
"name": "Product A",
"id": "123-A",
"value": 10
} ]
}
```
### **Modify-default-beta**
Used to add values and apply functions to a JSON.
**Example:**
Input
```
{
"products": [
{
"name": "Product A",
"price": 10
},
{
"name": "Product B",
"price": 20
}
]
}
```
Transformation
```
[
{
"operation": "modify-default-beta",
"spec": {
"products": {
"*": {
"manufacturer": "Manufacturer default"
}
}
}
}
]
```
Output
```
{
"products" : [ {
"name" : "Produto A",
"price" : 10,
"manufacturer": "Manufacturer default"
}, {
"name" : "Produto B",
"price" : 20,
"manufacturer": "Manufacturer default"
} ]
}
```
### **Modify-overwrite-beta**
Used to override values and apply functions to a JSON.
**Example:**
Input
```
{
"data": {
"firstName": "John",
"lastName": "Smith"
}
}
```
Transformation
```
[
{
"operation": "modify-overwrite-beta",
"spec": {
"data": {
"fullName": "=concat(@(1,firstName),' ',@(1,lastName))"
}
}
}
]
```
Output
```
{
"data" : {
"firstName" : "John",
"lastName" : "Smith",
"fullName" : "John Smith"
}
}
```
[Click here to read a detailed article about Transformer (JOLT).](broken://pages/1MdhGuzZOTmoeEJWZJtj)
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