ObjectBox C and C++ 5.0.0

User-Specific Data Sync

• Sync filters: define server-side filter expression to sync individual data for each sync user.
  This is also known as "user-specific data sync" and requires Sync clients version 5.0.
• Client variables: clients may define key/value pairs that can be used in sync filters

New supported platform: Windows ARM64

• Besides x86 and x64, ObjectBox for Windows now also supports ARM64

Sync

• Sync clients may now provide certificate locations for SSL (TLS) connections

Fixes

• Fixed clearing 1:N backlinks for IDs larger than 32-bit (setting backlink ID to 0 on the "1" side)
• In-memory with WAL file: improved error handling
• Safeguard against undefined behavior by panicking in rare illegal usage patterns that are not recoverable.
  I.e. deleting a (write) transaction in a non-owner thread cannot be safely handled in any other way.
• Various small improvements and updates under the hood.

Examples

• Make each example self-contained, you can e.g. copy an example's directory as a starting point for your own app
• Add a convenient build.sh script to each example that works the same way across examples,
  e.g. ./build.sh run to build and run the example in one step
• Make sources more readable (refactorings, added additional comments)
• The Task sync example moved to ObjectBox Sync Examples

Check changelog for details

ObjectBox C and C++ 5.0.0 RC

Release candidate.

ObjectBox C and C++ 4.3.1

Bug fix release

• Cursor/Query: deleting a cursor (e.g. in a non-creator thread) waits for any query to finish
• Query: added safety check to detect using a deleted query instance
• Admin: fix displaying some string values twice
• Add a few missing allocation failure checks
• Internal improvements, e.g. updated dependencies and compiler to new major versions

ObjectBox C and C++ 4.3.0

• Windows: msvc runtime is now embedded to avoid incompatible msvcp140.dll (e.g. those shipped with some JDKs)
• External property types (via MongoDB connector): JsonToNative to support sub (embedded/nested) documents/arrays in MongoDB, and more
• Admin: various new features

Sync

• Add "Log Events" for important server events, which can be viewed on new Admin page
• Detect and ignore changes for objects that were put but were unchanged
• The limit for message size was raised

Check changelog for details

ObjectBox C and C++ 4.2.0

• Extended the model by external names and types:
  allows defining a different name for an external database, which ObjectBox syncs with.

This prepares upcoming features for our MongoDB Sync Connector.

Check changelog for details

ObjectBox C and C++ 4.1.0

• New query conditions for map properties (via flex properties)
• Vector search: add "Geo" distance type for longitude/latitude pairs
• Various internal improvements

Sync

• Add JWT authentication
• Sync clients can now send multiple credentials for login

Check changelog for details

ObjectBox C and C++ 4.0.3 (the first full 4.0 release)

4.0.3 the first 4.0.x version working with ObjectBox Generator 4.0 and thus is the first full 4.0 release.

Check the changelog for details

ObjectBox C and C++ 4.0.2

• Made closing the store more robust; e.g. it waits for ongoing queries and transactions to finish
  (please still ensure to clean up properly on your side, this is an additional safety net)
• Made Box API more robust when racing against store closing
• Improved C++ APIs for nearest neighbor search (query building etc.)
• Some minor HNSW performance improvements
• Add "vectorsearch-cities" example

Sync

• Fixed a serious regression; please update to the latest version asap!
• Added a special compression for tiny transactions
• Embedded clusters (note: the cluster feature may not come with all editions of the library)
• Add FlatBuffers based configuration for Sync Server

ObjectBox 4.0.1

• Query: "visit with score" added, so you can consume vector search results one-by-one with a visitor callback

ObjectBox 4.0 Vector Search

• ObjectBox now supports vector search ("vector database") to enable efficient similarity searches.
  This is particularly useful for AI/ML/RAG applications, e.g. image, audio, or text similarity.
  Other use cases include semantic search or recommendation engines.
  See https://docs.objectbox.io/ann-vector-search for details.
• Adjusting the version number to match the core version (4.0); we will be aligning on major versions from now on.