JSON Schema to POCO

The purpose of this tool is to convert JSON schemas based on the official JSON schema standard into C# POCOs. This tool uses JSON.net as a JSON deserializer, and currently supports up to the v3 draft.

Turn this JSON schema:

{
  "$schema": "http://json-schema.org/draft-03/schema#",
  "title": "Country",
  "description": "A nation with its own government, occupying a particular territory",
  "type": "object",
  "properties": {
    "flag": {
      "$ref": "flag.json"
    },
    "cities": {
      "type": "array",
      "description": "A large town",
      "items": {
        "$ref": "city.json"
      },
      "uniqueItems": true
    },
    "population": {
      "type": "integer",
      "description": "The number of people inhabiting this country",
      "minimum": 1000,
      "required": true
    }
  }
}

Into this! (with all references generated in separate files)

namespace generated
{
    using System;
    using com.cvent.country.entities;
    using generated;
    using System.Collections.Generic;
    using Cvent.SchemaToPoco.Core.ValidationAttributes;
    using System.ComponentModel.DataAnnotations;
    
    // A nation with its own government, occupying a particular territory
    public class Country
    {
        // Used as the symbol or emblem of a country
        private Flag _flag;
        
        // A large town
        private HashSet<City> _cities;
        
        // The number of people inhabiting this country
        private int _population;
        
        // Used as the symbol or emblem of a country
        public virtual Flag Flag
        {
            get
            {
                return _flag;
            }
            set
            {
                _flag = value;
            }
        }
        
        // A large town
        public virtual HashSet<City> Cities
        {
            get
            {
                return _cities;
            }
            set
            {
                _cities = value;
            }
        }
        
        // The number of people inhabiting this country
        [Required()]
        [MinValue(1000)]
        public virtual int Population
        {
            get
            {
                return _population;
            }
            set
            {
                _population = value;
            }
        }
    }
}

Usage (CLI)

Requirements

• .NET Framework 4.5 or later

Instructions

1. Download the latest executable, build the solution in Visual Studio (Ctrl+Shift+B), or run msbuild \Path\to\.sln.
2. Run the following command:

Cvent.SchemaToPoco.Console.exe -s \Location\To\Json\Schema

Optional Flags

-n name.for.namespace

Default: generated

-o \Location\To\Generate\Files

Default: <exe location>\generated

-v

Prints out generated code without generating files

Usage (Library)

Download the latest DLL, and add it to your project as a reference.

Basic Usage

// To generate files:
// The location can be a web address, an absolute path, or a relative path.
var controller = new JsonSchemaToPoco("/location/to/schema");
int status = controller.Execute();

// To get the C# code as a string:
string code = JsonSchemaToPoco.Generate("/location/to/schema");

Reference

Current version: 1.2 (Alpha)

View changelog

Troubleshooting