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Refactor `FlowStateMachineImpl.transientValues` and `FlowStateMachineImpl.transientState` to stop the fields from exposing the fact that they are nullable. This is done by having private backing fields `transientValuesReference` and `transientStateReference` that can be null. The nullability is still needed due to serialisation and deserialisation of flow fibers. The fields are transient and therefore will be null when reloaded from the database. Getters and setters hide the private field, allowing a non-null field to returned. There is no point other than in `FlowCreator` where the transient fields can be null. Therefore the non null checks that are being made are valid. Add custom kryo serialisation and deserialisation to `TransientValues` and `StateMachineState` to ensure that neither of the objects are ever touched by kryo.
Corda
Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value.
Features
- Smart contracts that can be written in Java and other JVM languages
- Flow framework to manage communication and negotiation between participants
- Peer-to-peer network of nodes
- "Notary" infrastructure to validate uniqueness and sequencing of transactions without global broadcast
- Enables the development and deployment of distributed apps called CorDapps
- Written in Kotlin, targeting the JVM
Getting started
- Read the Getting Started documentation
- Run the Example CorDapp
- Read about Corda's Key Concepts
- Follow the Hello, World! tutorial
Useful links
- Project Website
- Mailing List
- Documentation
- Stack Overflow Tag
- Slack Channel
- Meetups
- Training Courses
Contributing
Corda is an open-source project and contributions are welcome!
To find out how to contribute, please see our contributing docs.
License
Acknowledgements
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