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dddsample-core | This is the new home of the original DDD Sample app .. | REST library

 by   citerus Java Version: Current License: MIT

 by   citerus Java Version: Current License: MIT

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kandi X-RAY | dddsample-core Summary

dddsample-core is a Java library typically used in Web Services, REST, Bitcoin applications. dddsample-core has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub.
This is the new home of the original DDD Sample app (previously hosted at sf.net)..
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • dddsample-core has a medium active ecosystem.
  • It has 3641 star(s) with 1108 fork(s). There are 284 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 8 open issues and 7 have been closed. On average issues are closed in 210 days. There are 4 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of dddsample-core is current.
dddsample-core Support
Best in #REST
Average in #REST
dddsample-core Support
Best in #REST
Average in #REST

quality kandi Quality

  • dddsample-core has 0 bugs and 0 code smells.
dddsample-core Quality
Best in #REST
Average in #REST
dddsample-core Quality
Best in #REST
Average in #REST

securitySecurity

  • dddsample-core has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • dddsample-core code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
dddsample-core Security
Best in #REST
Average in #REST
dddsample-core Security
Best in #REST
Average in #REST

license License

  • dddsample-core is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
dddsample-core License
Best in #REST
Average in #REST
dddsample-core License
Best in #REST
Average in #REST

buildReuse

  • dddsample-core releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • dddsample-core saves you 7229 person hours of effort in developing the same functionality from scratch.
  • It has 14951 lines of code, 627 functions and 204 files.
  • It has low code complexity. Code complexity directly impacts maintainability of the code.
dddsample-core Reuse
Best in #REST
Average in #REST
dddsample-core Reuse
Best in #REST
Average in #REST
Top functions reviewed by kandi - BETA

kandi has reviewed dddsample-core and discovered the below as its top functions. This is intended to give you an instant insight into dddsample-core implemented functionality, and help decide if they suit your requirements.

  • Load the Hibernate data .
  • Finds shortest path between origin and destination node .
  • Calculate the next handling activity based on a route specification .
  • Checks if the given event is expected .
  • Fetches the list of possible destinations for a route .
  • Submit event
  • Registers a new handling event .
  • Instrument a cargo .
  • Get the textual representation of the delivery status .
  • Book a new cargo

dddsample-core Key Features

This is the new home of the original DDD Sample app (previously hosted at sf.net)..

Community Discussions

Trending Discussions on dddsample-core
  • DDD: Entity with collection of value objects - One event or multiple?
Trending Discussions on dddsample-core

QUESTION

DDD: Entity with collection of value objects - One event or multiple?

Asked 2020-Apr-11 at 02:55

Imagine an instance where we have an entity that has a collection of value objects.

If we were to add (say the domain concept is to assign) an additional record value object to the collection we would have something like:

entity.assign_record(...)

that would raise a:

class RecordAssignedEvent(...)

Straight forward.

Now imagine a situation where the invariant requires that an entire collection needs to be replaced. Let's say an assign method would now replace all the current records in the entity.

ie.

entity.assign_records(list <records>)

Would it be better to raise a single event:

class RecordsAssignedEvent:
    contains details of all records updated

or create a separate event per assigned record, then publish the collection together:

class RecordAssignedEvent(...)

My concerns are:

  • The single RecordsAssignedEvent will contain a lot of data... imagine 10 records being assigned? 100?
  • My domain events only contain primitive types. But if I raise as a single event, I'll be forced to create some DTO or similar to include as a collection. That DTO now needs to be available to any subscriber of the event. If I raise multiple events I can easily continue to limit to primitives.

In the DDDSample app there is a similar scenario where a Cargo has an itinerary made up of a number of legs (in this case the collection itself is a value object made up of value objects):

https://github.com/citerus/dddsample-core/blob/master/src/main/java/se/citerus/dddsample/domain/model/cargo/Cargo.java

Is there any guidance in these situations on the granularity of domain events?

ANSWER

Answered 2020-Apr-11 at 02:55

Is there any guidance in these situations on the granularity of domain events?

If you are looking for guidance about domain events, event-sourcing is a good search term to use: people who store their domain state in a stream of events spend a lot of time worrying about things like granularity.

Broadly, having multiple domain events associated with a single transaction is common. In other words, you shouldn't hesitate at all to consider multiple domain events when that model is a better fit for your domain than a single event.

A commonly discussed example is a "trade book", where we are matching up buy and sell orders. A single large sell order might close several different buy orders, and it is a natural fit with the language of the domain to be firing different events for each of the orders closed.

In complex processes, it is often useful to be able to back trace the graph of events; C was caused by B was caused by A. The work to perform an analysis may be considerably simpler if we don't have to dig around in B trying to figure out which part of B was the cause of C.

A number of the same motivations for cohesion in our source code also applies to event design.

That said, you normally want domain reasons for multiple domain events, not mechanical reasons. If big, inconvenient to serialize graph of information really is a single atomic change in the language of your domain, then you really should do the work of designing the appropriate schema for it, rather than taking the shortcut of carving the information along arbitrary boundaries so that the data will align with your arbitrary schema conventions.

aka "It depends".

Source https://stackoverflow.com/questions/61142246

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install dddsample-core

You can download it from GitHub.
You can use dddsample-core like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the dddsample-core component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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