@transient
@Transient is a persistence annotation that marks a property or field to be excluded from storage.
Spring in Action, Sixth Edition
@Transient is a Spring Data MongoDB annotation that excludes a domain property from document persistence.
- How it is used
- Excludes domain properties from persistence in MongoDB documents and R2DBC orders.
- How deep it goes
- Defines the mapping effect and works through an R2DBC relationship that would otherwise cause an error.
- Examples
- Uses a TacoOrder collection that holds Taco objects while their IDs are persisted.
- What you can do after
- Apply it to keep an R2DBC order collection available in memory without asking R2DBC to persist that relationship.
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Java Persistence with Spring Data and Hibernate epub
The JPA Transient annotation marks a persistent-class field or property that must not be stored in persistent data.
- How it is used
- Excludes derived, sensitive, or environment-specific fields from JPA or Spring Data MongoDB persistence.
- How deep it goes
- Explains field or getter placement, access strategy, and the distinction from Java transient, but not provider internals.
- Examples
- Uses a computed price, a clear-text password, a local IP address, and a MongoDB User entity.
- What you can do after
- Apply it via JPA or Spring Data MongoDB to keep runtime-only fields out of stored data.
Read how Java Persistence with Spring Data and Hibernate epub explains @transient →
Related concepts
- Spring Data R2DBCconfigures · Spring Data R2DBC is a Spring Data project that provides repository-based persistence for relational databases through the Reactive Relational Database Connectivity API.
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