What is JSON to Thrift Struct Generator?
This tool converts JSON data to Apache Thrift IDL struct definitions. Apache Thrift is an interface definition language and binary communication protocol used for defining and creating services across multiple programming languages. The generated Thrift IDL includes proper type mapping, nested struct extraction, optional field support, and namespace declarations.
How to Use
- Paste your JSON data into the input area
- Configure the namespace (e.g., java/com.example)
- Toggle optional fields and camelCase naming as needed
- Click "Generate" and copy the Thrift IDL output
Why Use This Tool?
Tips & Best Practices
- Use i64 for integer values exceeding i32 range (2,147,483,647)
- Nested JSON objects are automatically extracted as separate structs with proper references
- Null values are mapped to optional fields when the option is enabled
- Arrays are converted to list<Type> with the element type inferred from the first element
Frequently Asked Questions
What is Apache Thrift?
Apache Thrift is an interface definition language and binary communication protocol used for defining and creating services across different programming languages. It enables efficient cross-language serialization and RPC.
How are JSON types mapped to Thrift types?
JSON strings map to Thrift string, integers map to i32 (or i64 for large values), floats map to double, booleans map to bool, null maps to optional fields, arrays map to list<Type>, and nested objects map to separate struct definitions.
What is the difference between struct and exception in Thrift?
Thrift structs are general-purpose data containers, while exceptions are specifically designed for error handling in service definitions. Exceptions can be thrown by service methods and caught by clients, similar to exceptions in programming languages.
How are arrays and nested objects handled?
JSON arrays are converted to Thrift list<Type> where Type is inferred from the array elements. Nested JSON objects are extracted as separate Thrift struct definitions and referenced by name in the parent struct.
Is my JSON data sent to a server?
No, all processing happens entirely in your browser. Your JSON data never leaves your device. The conversion is performed client-side with no server involvement.