MicroStream Reference Manual
MicroStream HomeAPI Docs
3.0
3.0
  • Preface
  • System Requirements
  • License
  • Changelog
  • Installation
  • Data-Store
    • Overview
    • Getting Started
    • Root Instances
    • Configuration
      • Properties
      • Storage Files and Directories
      • Using Channels
      • Housekeeping
      • Backup
      • Lock File
    • Storing Data
      • Convenience Methods and Explicit Storing (Transactions)
      • Lazy and Eager Storing
      • Transient Fields
      • Best Practice
    • Loading Data
      • Lazy Loading
        • Touched Timestamp, Null-Safe Variant
        • Clearing Lazy References
    • Deleting Data
    • Queries
    • Application Life-Cycle
    • Legacy Type Mapping
      • User Interaction
    • Backup Strategies
    • Import / Export
    • Housekeeping
    • Customizing
      • Custom Type Handler
      • Custom Legacy Type Handler
      • Custom Class Loader
      • Custom Storing Behavior
      • Optional Storage Manager Reference in Entities
    • REST Interface
      • Setup
      • REST API
      • Client GUI
    • FAQ
      • Data Model
      • Data Management
      • File Storage
      • Java Features
      • Miscellaneous
    • Addendum
      • Supported Java Features
      • Specialized Type Handlers
      • Examples and Demo Projects
  • Cache
    • Overview
    • Getting Started
    • Configuration
      • Properties
      • Storage
    • Use Cases
      • Hibernate Second Level Cache
      • Spring Cache
  • Basic Concepts
    • Layered Entities
      • Configuration
      • Defining Entities
      • Creating Entities
      • Updating Entities
      • Versioning
      • Logging
      • Multiple Layers
    • Wrapping
      • Configuration
      • Usage
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  1. Basic Concepts
  2. Layered Entities

Updating Entities

PreviousCreating EntitiesNextVersioning

Last updated 3 years ago

This is the manual for older MicroStream versions (Version < 5.0).

The new documentation (Version >= 5.0) is located at:

The data layer is always immutable. In order to update the values we have to replace the data layer completely. This is done with the updater. The property setter methods can be chained, so it is easy to update multiple properties, for example:

PersonUpdater.New(mike)
			.firstName("Jim")
			.lastName("Hope")
			.update();

If only one property needs to be updated, the updater class offers static convenience methods for that:

PersonUpdater.setFirstName(mike, "Jim");
https://docs.microstream.one/