#Concerto data software
#Concerto data code

Out of sync models (or model mapping) is a huge source of anguish and bugs. It also doesnвЂ™t integrate well with modern application development, where we may use different technology across the web, mobile, middle and backend tiers of an application. The major downside with this approach is that it is almost impossible to then share and reuse these models outside of a single application.

If developers define models as part of application development, they tend to favour creating Java classes, Go structs, Typescript or similar, because they want to express the model in a language they are familiar with and that integrates closely with the type-system used for computation. Optimization of serialization/wire format.These different model representations make different trade-offs with respect to: If it is explicit, it can be expressed using a wide range of technology including XML Schema, JSON Schema, protobufs, NoSQL design documents, Loopback schema, Java classes, Go structs, RDBMS tables, ad-hoc JSON or YAML documentsвЂ¦the list is almost endless. The data model for your application can either be implicit (duck typingвЂ¦) or explicit.

As soon as you want to implement something like an Object-Relational-Mapper or REST API browser or web-form generator, you need a data model. Models are required to create generic tools because you need to reason about the structure of user-defined domain models.

#Concerto data software

Publish your reusable models to any website, including the Accord Project Open Source model repository, hosted at: ДЄll software applications have a data or domain model.

Generate dynamic web-forms from your data model and bind them to JSON data.

Convert the model to other formats including JSON Schema, XML Schema, Java, Go, Typescript, Loopback, PlantUMLвЂ¦.

Introspect the model using a powerful set of APIs.

Deserialize (and optionally validate) instances from JSON.

#Concerto data code

Optionally edit your models using a powerful VS Code add-on with syntax highlighting and validation.

The metamodel gives you вЂњjust enoughвЂќ expressivity to capture real-world business models, while remaining easy to map to most runtime environments.

Define an object-oriented model using a domain-specific language that is much easier to read and write than JSON/XML Schema, XMI or equivalents.

The browserified version of Concerto is в’80 KB and the maintainers are working to make it even smaller.Д¬oncerto has recently been modularized and moved out of Hyperledger Composer into the composer-concerto npm module, so you can use it in your Node.js applications, Fabric Node.js chaincode or even in your web browser! It works in both a Node.js process or in your browser. In this article for developers and blockchain solution architects, I introduce the Concerto npm module and show you how you can use it from Hyperledger Fabric v1.3 Node.js chaincode.Д¬oncerto is a lightweight, 100% JavaScript schema language and runtime. Is the business logic in your blockchain chaincode hard to find because it is buried in code that is doing JSON serialization and data validation? Are you developing REST APIs by hand for your domain model? The good news is that there is now a better way! Guest post: Dan Selman, Maintainer Hyperledger Composer, Accord Project Cicero, CTO Clause Inc.