JSON to Apex Converter

A Visual Studio Code extension that converts JSON to Apex classes with automatic inner class generation and static parsing support.

Features

• Convert JSON to Apex classes with proper property types
• Automatic generation of inner classes for nested objects
• Static parse method using System.JSON.deserialize
• Built-in test method with sample JSON
• Support for arrays and nested objects
• Sample value comments for better documentation
• No explicit getters and setters (using direct property access)

Installation

1. Open Visual Studio Code
2. Go to the Extensions view (Ctrl+Shift+X or Cmd+Shift+X)
3. Search for "JSON to Apex Converter"
4. Click Install

Usage

1. Open or create a JSON file in VS Code
2. Select the JSON content you want to convert
3. Right-click on the selected text
4. Choose "Convert JSON to Apex" from the context menu
5. Enter your desired Apex class name when prompted
6. A new file will open with the generated Apex class

Example

Input JSON:

{
    "name": "John Doe",
    "age": 30,
    "isActive": true,
    "scores": [95, 87, 91],
    "address": {
        "street": "123 Main St",
        "city": "New York"
    }
}

Generated Apex class:

public class fromJSON {
    public String name;    //John Doe
    public Integer age;    //30
    public Boolean isActive;    //true
    public cls_scores[] scores;    //[95, 87, 91]
    public cls_address address;    //{street: 123 Main St, city: New York}

    class cls_address {
        public String street;    //123 Main St
        public String city;    //New York
    }

    public static fromJSON parse(String json) {
        return (fromJSON) System.JSON.deserialize(json, fromJSON.class);
    }

    static testMethod void testParse() {
        String json = ' {'+
            '       "name": "John Doe",'+
            '       "age": 30,'+
            '       "isActive": true,'+
            '       "scores": [95, 87, 91],'+
            '       "address": {'+
            '           "street": "123 Main St",'+
            '           "city": "New York"'+
            '       }'+
            '   }';
        fromJSON obj = parse(json);
        System.assert(obj != null);
    }
}

Features in Detail

Automatic Inner Class Generation

• Nested objects are automatically converted to inner classes
• Inner classes are prefixed with 'cls_'
• Properties maintain their original types

Static Parsing

• Includes a static parse method using System.JSON.deserialize
• Easy to use: YourClass obj = YourClass.parse(jsonString);

Test Method

• Automatically generates a test method
• Includes sample JSON for testing
• Basic assertion to verify parsing works

Property Types

• String: for text values
• Integer: for whole numbers
• Decimal: for decimal numbers
• Boolean: for true/false values
• Custom arrays: for array values
• Inner classes: for nested objects

Requirements

• Visual Studio Code 1.85.0 or higher
• Salesforce development environment (for using the generated Apex classes)

Contributing

Feel free to submit issues and enhancement requests!