Schema deterministic hashcode for DynamicValue

[carlos-verdes]

I'm creating a ddd store for Entity and ValueObject.

ValueObject will use it's hashcode as key in the store (and I'll manage collisions storing a list instead of a single value object)

My current approach use something like this:

trait ValueObject[R]:

  def schema: Schema[R]

  extension (valueObject: R)
    def isSameValueObjectAs(other: R): Boolean =
      schema.diff(valueObject, other).isIdentical

    def valueHashCode: Long =
      schema.toDynamic(valueObject).hashCode

This way I can do something like store.getValueObject[T: ValueObject](valueObject: T).filter(found => found.isSameValueObjectAs(valueObject).runHead

However in my tests I observe the hashCode generated using DynamicValue changes, making my code fail.

[jdegoes]

/bounty $175

[algora-pbc[bot]]

💎 $175 bounty • ZIO

Steps to solve:

1. Start working: Comment /attempt #655 with your implementation plan
2. Submit work: Create a pull request including /claim #655 in the PR body to claim the bounty
3. Receive payment: 100% of the bounty is received 2-5 days post-reward. Make sure you are eligible for payouts

Thank you for contributing to zio/zio-schema!

Add a bounty • Share on socials

Attempt	Started (GMT+0)	Solution
🟢 @BijenderKumar1	Jun 25, 2024, 3:53:55 AM	#696

[BijenderKumar1]

/attempt #655 I reproduced the issue by creating a DynamicValue object and logging the hashCode on repeated runs, and it does change. Diving deep into the issue, I observed that there is no implementation for the hashCode method in the DynamicValue class, and thus the original methods from the Any class are being used, leading to inconsistency. I am adding an implementation for the hashCode in the DynamicValue class to resolve the issue. Thanks!

Algora profile	Completed bounties	Tech	Active attempts	Options
@BijenderKumar1	1 ZIO bounty			Cancel attempt

[algora-pbc[bot]]

💡 @BijenderKumar1 submitted a pull request that claims the bounty. You can visit your bounty board to reward.