MicroStream Reference Manual
MicroStream HomeAPI Docs
2.0
2.0
  • Preface
  • System Requirements
  • License
  • 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
    • FAQ
      • Data Model
      • Data Management
      • File Storage
      • Miscellaneous
    • Customizing
      • Custom Type Handler
      • Custom Legacy Type Handler
      • PersistenceEagerStoringFieldEvaluator
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  1. Data-Store
  2. Customizing

Custom Legacy Type Handler

PreviousCustom Type HandlerNextPersistenceEagerStoringFieldEvaluator

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:

In addition to the methods for legacy type mapping described in chapter there is also the possibility to implement custom legacy type handlers. Those handlers are the most flexible way to do the mapping from old to new types.

The basic interface that has to be implemented is one.microstream.persistence.types.PersistenceLegacyTypeHandler.

Fortunately the standard persistence implementation provides the abstract class one.microstream.persistence.binary.types.BinaryLegacyTypeHandler.AbstractCustom that should be sufficient to start with a custom implementation in most cases.

See the example customLegacyTypeHandler on

Please note the this example requires manual code modifications as described in it's main class.

https://docs.microstream.one/
Legacy Type Mapping
GitHub