https://github.com/vinayhosamane/mastercoredata
This repository is to try to different uses cases in coredata.
https://github.com/vinayhosamane/mastercoredata
database swift
Last synced: 2 months ago
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This repository is to try to different uses cases in coredata.
- Host: GitHub
- URL: https://github.com/vinayhosamane/mastercoredata
- Owner: vinayhosamane
- Created: 2021-05-05T15:00:15.000Z (about 5 years ago)
- Default Branch: master
- Last Pushed: 2021-05-22T05:05:33.000Z (about 5 years ago)
- Last Synced: 2025-03-27T01:23:25.061Z (over 1 year ago)
- Topics: database, swift
- Language: Swift
- Homepage:
- Size: 158 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# MasterCoredata
This repository is to try different uses cases in coredata.
If you want to read a book on Coredata, then try this. https://www.objc.io/books/core-data/preview/
You will master all the techniques.
- [x] Model Creation From Editor
Remember to set the `codegen` to Manual/None, if you want control over your managed object models. Otherwise Xcode will auto-generate those models on first run.
- [x] CRUD Operations on Coredata managed object model
- [x] Fetching content from Entity
- [x] Handling relationships between Entities
- [x] Parent / Child Managed Object Contexts
- [x] Thread safe managed object contexts
- [x] Sharing managed objects between multiple contexts
- [ ] Transactions In Coredata, Batch Insert / Delete
- [x] NSFetchedResultsController
If we want observe for change notifications consistently, then this is the best bet for you to use, so that we can refresh our UI.
- [ ] Best Practices
- [x] Value change observers / KVO / Notifications
- [x] Parent / Child context save merge policies
- [ ] Resolving merge conflicts
- [x] Updating entities with new attributes
- [ ] Creating versions of coredata model
- [ ] Light weight migration policy
- [ ] Heavy weight migration with mapping model
- [ ] Importing data from existing sql database
- [ ] Different persistent stores
- [ ] Performance tuning using faults
- [x] Folder structure for coredata stack or related code across the project
- [x] Logging Coredata Queries
- [x] Debugging with 'DB Browser for SQLite'
- [ ] Testing Coredata related code
- [ ] Use of Entity Constraints
- [ ] Use of Abstract Entities
- [ ] Adding Fetch Index or Fetch Request
- [ ] Adding Configurations
## Resources
Block diagram whichh explains how model changes saved in parent/child contexts
Supporting Codable with NSManagedObject classes
https://www.donnywals.com/using-codable-with-core-data-and-nsmanagedobject/
Observing managed object change notifications
https://www.donnywals.com/observing-changes-to-managed-objects-across-contexts-with-combine/
Using multiple managed object contexts in coredata
https://www.cocoanetics.com/2012/07/multi-context-coredata/
Unit of Work pattern
https://martinfowler.com/eaaCatalog/unitOfWork.html
Coredta Transactions
https://christiantietze.de/posts/2015/10/unit-of-work-core-data-transaction/#:~:text=Transactions%20and%20Rolling%20Back%20Changes%20in%20Core%20Data%20with%20UnitOfWork,-Oct%2012th%2C%202015&text=The%20Unit%20of%20Work%20pattern,changes%20and%20have%20them%20saved.
Coredata progressive migrations
https://kean.blog/post/core-data-progressive-migrations
Apple's earth quake sample project
https://developer.apple.com/documentation/coredata/loading_and_displaying_a_large_data_feed
The laws of Coredata
https://davedelong.com/blog/2018/05/09/the-laws-of-core-data/
Predicate cheatsheet
https://academy.realm.io/posts/nspredicate-cheatsheet/
Life cycle of NSManagedObject
https://www.avanderlee.com/swift/nsmanagedobject-awakefrominsert-preparefordeletion/
Constraints in Coredata model
https://www.avanderlee.com/swift/constraints-core-data-entities/
Note: Coredata won't handle duplicate rows, we have to make sure to enter unique records.