Module litebridge.orm

Package org.litebridgedb.orm.api.spec

Interface ColumnMapping

All Known Implementing Classes:

ColumnSpec, ManyToMany, OneToMany

public sealed interface ColumnMapping
permits ColumnSpec, OneToMany, ManyToMany

Represents a base type for various kinds of database column mappings.

The ColumnMapping interface serves as a common contract for modelling different types of mappings between fields in a data transfer object (DTO) and database expressions. It is a sealed interface, allowing only specific permitted implementations to be used.

Permitted implementations: - ColumnSpec: Represents a direct mapping between a DTO field and a single database column, with optional configuration for auto-increment and value generation. - OneToMany: Represents a one-to-many relationship, where a DTO field maps to a collection of related database rows. - ManyToMany: Represents a many-to-many relationship, where a DTO field maps to related entities through an intermediate join table.

This interface is part of the ORM framework, enabling flexible and type-safe mappings between DTO structures and underlying database schemas.