ObjectBox C / C++ Database

This is the ObjectBox documentation for our C and C++ APIs. We strive to provide you with the easiest and fastest solution to store and retrieve data.

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Installation
How to get started
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Latest Versions (Changelogs)
0.16.0 (2022-05-06)
Allow UTF-8 for database directories on Windows (available for other platforms before)
Various internal improvements
C++
Promoted Options to a top level class, as nested classes cannot be declared forward
New #define to disable FlatBuffers includes to simplify new project setup
Rename Exception to DbException
Minor improvements
V0.15.2 (2022-02-15)
Add store cloning
Fix attaching to a reopened store
V0.15.1 (2022-01-26)
Fix non-unique indexes triggering unique constraint violations in corner cases (requires at least two unique constraints in an entity and a specific order; introduced in 0.15.0)
Admin UI now supports multiple sessions to the same host using different ports (session ID via HTTP request)
Minor performance improvements with hashed indexes
Sync
Performance improvements for compression and decompression
V0.15.0 (2021-12-09)
New "Flex" data type that can contain data of various types like integers, floating points, strings, lists and maps
New query conditions for Flex lists to find a specific element
New query conditions for Flex maps to find elements with a specific key or key/value pair
New unique on-conflict strategy: replace conflicting objects (OBXPropertyFlags_UNIQUE_ON_CONFLICT_REPLACE)
New functions to attach to existing stores using only the file path (in the same process)
New APIs for ObjectBox Admin, the web based UI (formerly known as Object Browser): obx_admin_*
Minor performance improvements for indexed access
Major performance improvements for tree/GraphQL queries
ARM binaries are now built for minimal size reducing the library size significantly
New "no_reader_thread_locals" store option
Enable debug logging (requires a special build)
API: Type for query offsets and limits was changed from uint64_t to size_t
API: rarely used obx_txn_mark_success() was removed; use obx_txn_success()
API: feature checks consolidated to only use obx_has_feature()
Many internal improvements
Core version 3.0.1-2021-12-09
Sync
New API for embedded server mode: obx_sync_server_* (implementation available on request)
Earlier Versions
The changelogs of earlier versions are available as part of the GitHub releases.
Provides native dynamic/shared library (.so/.dylib/.dll)
Provides C & C++ headers (objectbox.h & objectbox.hpp)
ObjectBox Generator
Check the ObjectBox Generator releases for details.

Installation

Last modified 9d ago

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Latest Versions (Changelogs)