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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.
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Maksymilian Pawlak 33e45eef4a CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 
* [CORDA-1297] Columns nullability (#3112)

JPA/Hibernate entities need to impose the correct NULL/NOT NULL constraints on the database - whatever these correct values actually are.
API change: net.corda.core.schemas.PersistentStateRef fields (index and txId) are now non-nullable. Rationale: The fields were always effectively non-nullable - values were set from non-nullable fields of other objects. The class is used in context of database table Primary Key of for other entities and a database already imposes those columns as non-nullable (even if JPA annotation nullable=false was absent).

(cherry picked from commit 7d69bc6)

* Compilation fix
2018-06-05 15:55:20 +01:00
.ci CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
.github Adjustments to the PR checklist 2017-09-20 16:58:31 +02:00
.idea CORDA-1346 - split the simm valuation demo to reduce the size of the contract jar - backport (#3099) 2018-05-09 17:05:38 +01:00
buildSrc Reformat files in buildSrc 2017-10-09 15:26:39 +01:00
client REVERT - CORDA-1264 - Needs more thought prior to release (#2952) 2018-04-10 18:18:57 +01:00
confidential-identities CORDA-1175 - counterparty docs homogenisation (#2747) 2018-03-06 16:10:48 +00:00
config Corda-1155 - Jolokia logging via slf4j (#2753) 2018-03-07 13:12:15 +00:00
core CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
docs CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
experimental No IdentityServiceInternal as public param. Start nodes without params. Simpler MockServices ctors. (#2521) 2018-02-13 11:32:04 +00:00
finance CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
gradle/wrapper Upgrade gradle to 4.4.1 2018-01-24 16:15:43 +00:00
gradle-plugins CORDA-1280 - Update the api-scanner to the most recent version + regenerate api (#3154) 2018-05-16 11:56:23 +01:00
lib Restoring lib/quasar.jar from repo (#1389) 2017-09-05 12:58:23 +01:00
node CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
node-api CORDA-866, ENT-1933 - Remove stale nodes from Network, Fix NetParam serialization (#3255) (#3128) 2018-05-31 10:03:51 +01:00
samples CORDA-1346 - split the simm valuation demo to reduce the size of the contract jar - backport (#3099) 2018-05-09 17:05:38 +01:00
testing CORDA-1297 - Columns nullability (#3112) -> V3 (#3303) 2018-06-05 15:55:20 +01:00
tools Improve the upgrade-test-packages.sh script to work on macOS. Fixes an issue found by tom on pubslack. (#2894) (#2901) 2018-03-29 13:13:09 +01:00
verifier ENT-1564 - add additional uploader check to the HashConstraint (#2845) (#2881) 2018-03-27 17:09:22 +01:00
webserver Corda-1155 - Jolokia logging via slf4j (#2753) 2018-03-07 13:12:15 +00:00
.gitignore CORDA-881: Signed network parameters has the network map cert attached to it instead of just the public key. (#2346) 2018-01-12 07:59:08 +00:00
build.gradle RELEASE - Post V3.1 update vno to 3.2-corda-snapshot 2018-04-11 16:58:05 +01:00
constants.properties CORDA-1280 - Update the api-scanner to the most recent version + regenerate api (#3154) 2018-05-16 11:56:23 +01:00
CONTRIBUTING.md Addressed some review comments about the license and readmes. 2016-11-22 11:56:46 +00:00
CONTRIBUTORS.md Some additional contributors recognised 2017-11-30 16:30:58 +01:00
gradle.properties CORDA-692 Don't include internal packages in API documentation (#2415) 2018-01-25 15:26:13 +00:00
gradlew Upgraded to gradle 4.1. 2017-08-23 15:36:08 +01:00
gradlew.bat Upgrade gradle to 4.4.1 2018-01-24 16:15:43 +00:00
LICENSE Update LICENSE 2017-03-06 15:33:29 +01:00
README.md Reflects tutorial changes and CorDapp build docs changes from release-V1. 2017-11-16 15:31:52 +00:00
settings.gradle CORDA-1346 - split the simm valuation demo to reduce the size of the contract jar - backport (#3099) 2018-05-09 17:05:38 +01:00
TRADEMARK Updated URL link to R3 trademark policy 2017-07-13 11:43:41 +01:00

README.md

Corda

Corda

Corda is a decentralised database system in which nodes trust each other as little as possible.

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

  1. Read the Getting Started documentation
  2. Run the Example CorDapp
  3. Read about Corda's Key Concepts
  4. Follow the Hello, World! tutorial

Useful links

Contributing

Please read here.

License

Apache 2.0

Acknowledgements

YourKit

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YourKit, LLC is the creator of YourKit Java Profiler and YourKit .NET Profiler, innovative and intelligent tools for profiling Java and .NET applications.