JSON Format

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

References: JSON.org

Extensibility and Data Validation

JSON has been extended by 3rd-party sources. However JSON's strength is the simple and succinct transport of data. This it accomplishes with only two structures that many languages can support natively. JSON is as close as one might get to binary and be human readable. There is no support inherent in JSON for data validation. Industry practice is to perform validations at the source and target systems, not in the data-interchange format. There are 3rd party libraries implementing validations, however in all cases this results in a heavier JSON message as the validation rules are being packaged along with the data.

Message Structure Overview

• Context Definition
• Example Messages
• HUD-JSON Data Definitions