MicroStream Reference Manual
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4.1
Preface
System Requirements
License
Changelog
Installation
Data-Store
Overview
Getting Started
Root Instances
Configuration
Storage Targets
Storing Data
Loading Data
Deleting Data
Queries
Application Life-Cycle
Legacy Type Mapping
Import / Export
Housekeeping
Customizing
REST Interface
FAQ
Addendum
Cache
Overview
Getting Started
Configuration
Use Cases
Basic Concepts
Layered Entities
Wrapping
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Deleting Data
This is the manual for older MicroStream versions (Version < 5.0).
The new documentation (Version >= 5.0) is located at:
​https://docs.microstream.one/​
Deleting data does not require performing explicit deleting actions like DELETE FROM table WHERE... . Instead you just need to clear any references to the object in your object-graph and store those changes. If a stored object is not reachable anymore its data will be deleted from the storage later. This behavior is comparable to Java's garbage collector.
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root.MyArrayList.remove(0);
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storage.store(root.MyArrayList);
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Deleted data is not erased immediately from the storage files
The erasing from the storage files is done by the housekeeping process.
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Clearing Lazy References
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Queries
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