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Version: 2023.1

Database interface - generated repositories

During the code generation phase, repository classes are generated for every table and view in the system. These repositories provide a type-safe way of accessing the database.

The main differences between the generated repositories and the Entity Db are:

  • The entity db can handle any database entity, each repository can only handle a single entity.
  • The generated repositories have specific methods for every index of table/view, whereas the entity db is fully generic.
Generated Repositories
Supports tables✔️
Supports views✔️
Supports any data type
Class to import[TableName]AsyncRepository \ [TableName]Rx3Repository
Type-safe read and write✔️
Type-safe write result
Returns data astable or view entities
Writes data astable or view entities
References indexes asGenerated methods
Programming interfaceAsync or RxJava
Write (input)Generated
Write (output)Write Result
SubscribeRecord Update of entity
Bulk or Range SubscribeBulk of entity
Available in Event Handlers 
Available in custom Request Servers 

With generated repositories, there are two flavours of the entity db:

  • one has a RxJava API signatures, for use from Java

  • the other flavour has an Async API signature, for use by Kotlin

If you have a table called POSITION, then, when you run a generateDao, two repositories will be generated: PositionRx3Repository and PositionAsyncRepository.

You can perform CRUD operations on Table/View by its primary key and indices.