objectbox 5.0.1

Flutter database for super-fast NoSQL ACID compliant object persistence.

5.0.1-dev.0 - 2025-10-29

• Generator: migrate to analyzer 8 APIs. Require at least analyzer 8.1.1 and source_gen 4.0.1. Resolves Error: The method 'getInvocation' isn't defined when running the generator using analyzer 8.4.0 (it removes APIs that older source_gen versions were using).

• Generator: require at least build 4.0.0. This will also allow using build_runner versions 2.7.2 or newer. #759

• For ToOne support renaming the implicitly created target ID (or "relation") property:

  // Change target ID property name from default "customerId" to "customerRef"
  @TargetIdProperty('customerRef')
  final customer = ToOne<Customer>();
  

  This can be useful if the default name needs to be used for another property. Or when syncing with MongoDB to match the name used in the MongoDB database. #713

• Provide a helpful error message if the name of a property conflicts with a target ID property created for a ToOne relation. #713

• Generator: find @Backlink() source relation also in case target entity class is processed first. #687

Sync

• SyncClient: support triggerReconnect().

5.0.0 - 2025-10-01

To upgrade to this major release run flutter pub upgrade objectbox --major-versions (or for Dart Native apps dart pub upgrade objectbox --major-versions).

Sync

• Support Sync server version 5.0.
  • User-Specific Data Sync: support configuring Sync filter variables on SyncClient.

Other Changes

• Flutter packages are compiled with Android SDK 35 to support Android Gradle Plugin 8.13 #755. They are also built using a language level of Java 11.
• Update ObjectBox database for Flutter Linux/Windows, Dart Native apps to 5.0.0-rc.
  • ToOne relations: when deleting an object with an ID larger than the maximum 32-bit unsigned integer (4_294_967_295) that is used as the target object of a ToOne, correctly re-set the target ID of the ToOne to 0. #740
• Update ObjectBox database for Flutter Android apps to 5.0.1. If your project is using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:5.0.1 in android/app/build.gradle.
• Update ObjectBox database for Flutter iOS/macOS apps to 5.0.0. For existing projects, run pod repo update and pod update ObjectBox in the ios or macos directories.
• Remove deprecated contains condition for List<String> properties, use containsElement instead.

4.3.1 - 2025-09-02

• Requires at least Dart SDK 3.7 or Flutter SDK 3.29.
• Migrate generator to analyzer 7.4 and source_gen 3.1 APIs. Allow analyzer version 8. #742
• Update ObjectBox database for Flutter Linux/Windows, Dart Native apps to 4.3.1.
• Update ObjectBox database for Flutter Android apps to 4.3.1. If your project is using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.3.1 in android/app/build.gradle.
  • Admin for Android: do not display values twice. #738
• Update ObjectBox database for Flutter iOS/macOS apps to 4.3.1. For existing projects, run pod repo update and pod update ObjectBox in the ios or macos directories.

4.3.0 - 2025-05-28

• Update ObjectBox database for Flutter Linux/Windows, Dart Native apps to 4.3.0. This includes significant improvements to ObjectBox Sync like raising the maximum messages/transaction size.
• Update ObjectBox database for Flutter Android apps to 4.3.0. If your project is using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.3.0 in android/app/build.gradle.
• Update ObjectBox database for Flutter iOS/macOS apps to 4.3.0. For existing projects, run pod repo update and pod update ObjectBox in the ios or macos directories.
• External property types (via MongoDB connector): add jsonToNative to support sub (embedded/nested) documents/arrays in MongoDB.

4.2.0 - 2025-04-15

• Requires at least Dart SDK 3.4 or Flutter SDK 3.22.
• Allow analyzer 7, dart_style 3, source_gen 2 and pointycastle 4. #705
• Examples: demos are compatible with JDK 21 included with Android Studio Ladybug or later, require Flutter SDK 3.24 (with Dart SDK 3.5) or newer.
• Update ObjectBox database for Flutter Linux/Windows, Dart Native apps to 4.2.0.
• Update ObjectBox database for Flutter Android apps to 4.2.0. If your project is using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.2.0 in android/app/build.gradle.
• Update ObjectBox database for Flutter iOS/macOS apps to 4.2.0. For existing projects, run pod repo update and pod update ObjectBox in the ios or macos directories.

4.1.0 - 2025-02-04

• Flutter for Android: requires Android 5.0 (API level 21).
• Vector Search: You can now use the new VectorDistanceType.GEO distance-type to perform vector searches on geographical coordinates. This is particularly useful for location-based applications.
• Flutter for Linux/Windows, Dart Native: update to objectbox-c 4.1.0.
• Flutter for Android: update to objectbox-android 4.1.0. If your project is using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.1.0 in android/app/build.gradle.
• Flutter for iOS/macOS: update to objectbox-swift 4.1.0. For existing projects, run pod repo update and pod update ObjectBox in the ios or macos directories.

Sync

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

4.0.3 - 2024-10-17

• Generator: replace cryptography library, allows to use newer versions of the transitive js dependency. #638
• iOS: support Query.findWithScores() with big objects (> 4 KB), previously would throw a StorageException: Do not use vector-based find on 32 bit systems with big objects. #676
• Make closing the Store more robust. It waits for ongoing queries and transactions to finish. This is just an additional safety net. Your code should still make sure to finish all Store operations, like queries, before closing it.
• Flutter for Linux/Windows, Dart Native: update to objectbox-c 4.0.2.
• Flutter for iOS/macOS: update to objectbox-swift 4.0.1. Existing projects may have to run pod repo update and pod update ObjectBox.
• Flutter for Android: update to objectbox-android 4.0.3. If you are using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.0.3 in android/app/build.gradle.

Sync

• Fix a serious regression, please update as soon as possible.
• Add special compression for tiny transactions (internally).

4.0.2 - 2024-08-14

• Sync: support option to enable shared global IDs.

4.0.1 - 2024-05-27

• Export ObjectWithScore and IdWithScore used by the new find with score Query methods. #637
• Add simple vectorsearch_cities Dart Native example application.

Note: this release includes the same versions of the Android library and ObjectBox pod as release 4.0.0. See update instructions there.

4.0.0 - 2024-05-15

To upgrade to this major release run flutter pub upgrade objectbox --major-versions (or for Dart Native apps dart pub upgrade objectbox --major-versions).

ObjectBox now supports on-device Vector Search 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.

Create a Vector (HNSW) index for a floating point vector property. For example, a City with a location vector:

@Entity()
class City {

  @HnswIndex(dimensions: 2)
  @Property(type: PropertyType.floatVector)
  List<double>? location;

}

Perform a nearest neighbor search using the new nearestNeighborsF32(queryVector, maxResultCount) query condition and the new "find with scores" query methods (the score is the distance to the query vector). For example, find the 2 closest cities:

final madrid = [40.416775, -3.703790];
final query = box
    .query(City_.location.nearestNeighborsF32(madrid, 2))
    .build();
final closest = query.findWithScores()[0].object;

For an introduction to Vector Search, more details and other supported languages see the Vector Search documentation.

• The generator correctly errors when using an unsupported index on a vector type.
• Flutter for Linux/Windows, Dart Native: update to objectbox-c 4.0.0.
• Flutter for Android: update to objectbox-android 4.0.0. If you are using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:4.0.0 in android/app/build.gradle.
• Flutter for iOS/macOS: update to objectbox-swift 2.0.0. Existing projects may have to run pod repo update and pod update ObjectBox.

2.5.1 - 2024-03-04

• Add SyncCredentials.userAndPassword().
• Change SyncCredentials from constructors to static methods. This should not require any changes in your code.

2.5.0 - 2024-02-14

• Support creating file-less in-memory databases, for example for caching or testing. To create one pass an in-memory identifier together with Store.inMemoryPrefix as the directory:

   final inMemoryStore =
       Store(getObjectBoxModel(), directory: "${Store.inMemoryPrefix}test-db");
  

  See the Store documentation for details.

• Add Store.removeDbFiles() to conveniently delete database files or an in-memory database.

• Add Store.dbFileSize() to get the size in bytes of the main database file or memory occupied by an in-memory database.

• Add relationCount() query condition to match objects that have a certain number of related objects pointing to them. E.g. Customer_.orders.relationCount(2) will match all customers with two orders. Customer_.orders.relationCount(0) will match all customers with no associated order. This can be useful to find objects where the relation was dissolved, e.g. after the related object was removed.

• Support for setting a maximum data size via the maxDataSizeInKB property when building a Store. This is different from the existing maxDBSizeInKB property in that it is possible to remove data after reaching the limit and continue to use the database. See the Store documentation for more details.

• For DateTime properties new convenience query conditions are generated that accept DateTime and auto-convert to milliseconds (or nanoseconds for @Property(type: PropertyType.dateNano)) #287

  // For example instead of:
  Order_.date.between(DateTime(2024, 1).millisecondsSinceEpoch, DateTime(2024, 2).millisecondsSinceEpoch)
  // You can now just write:
  Order_.date.betweenMilliseconds(DateTime(2024, 1), DateTime(2024, 2))
  

• When defining a property with a getter and setter instead of a field, support annotating the getter to configure or ignore the property #392

  For example, it is now possible to do this:

  @Property(type: PropertyType.date)
  @Index()
  DateTime get date => TODO;
  set date(DateTime value) => TODO;
    
  @Transient()
  int get computedValue => TODO;
  set computedValue(int value) => TODO;
  

• For Flutter apps: loadObjectBoxLibraryAndroidCompat() is now called by default when using openStore() (effective after re-running flutter pub run build_runner build). For devices running Android 6 or older this will pre-load the ObjectBox library in Java to prevent errors when loading it in Dart.

  If your code was calling the compat method manually, remove the call and re-run above command.

  Let us know if there are issues with this change in #369!

• Avoid conflicts with entity class names in generated code #519

• Flutter for Linux/Windows, Dart Native: update to objectbox-c 0.21.0.

• Flutter for Android: update to objectbox-android 3.8.0. If you are using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:3.8.0 in android/app/build.gradle.

• Flutter for iOS/macOS: update to objectbox-swift 1.9.2. Existing projects may have to run pod repo update and pod update ObjectBox.

2.4.0 - 2023-12-13

• Fix crash in Flutter plugin when running in debug mode on iOS. #561
• Support Flutter projects using Android Gradle Plugin 8. #581
• Flutter for Linux/Windows: fix CMake build deprecation warning. #522
• Flutter for Linux/Windows, Dart Native: update to objectbox-c 0.20.0.
• Flutter for Android: update to objectbox-android 3.7.1. If you are using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:3.7.1 in android/app/build.gradle. Notably requires Android 4.4 (API 19) or higher.
• Flutter for iOS/macOS: update to objectbox-swift 1.9.1. Existing projects may have to run pod repo update and pod update ObjectBox. Notably requires at least iOS 12.0 and macOS 10.15.
• Sync: add Sync.clientMultiUrls to work with multiple servers.

2.3.1 - 2023-10-02

• Fix "Loaded ObjectBox core dynamic library has unsupported version 0.18.1" on Android

2.3.0 - 2023-09-19

• Query support for integer and floating point lists: For integer lists (excluding byte lists) greater, less and equal are supported on elements of the vector (e.g. "has element greater").

  For floating point lists greater and less queries are supported on elements of the vector (e.g. "has element greater").

  A simple example is a shape entity that stores a palette of RGB colors:

  @Entity()
  class Shape {
      @Id()
      int id = 0;
  
      // An array of RGB color values that are used by this shape.
      Int32List? palette;
  }
    
  // Find all shapes that use red in their palette
  final query = store.box<Shape>()
          .query(Shape_.palette.equals(0xFF0000))
          .build();
  query.findIds();
  query.close();
  

• Queries: all expected results are now returned when using a less-than or less-or-equal condition for a String property with IndexType.value. #318

• Queries: when combining multiple conditions with OR and adding a condition on a related entity ("link condition") the combined conditions are now properly applied. #546

• Update: objectbox-c 0.19.0. Notably now requires glibc 2.28 or higher (and GLIBCXX_3.4.25); e.g. at least Debian Buster 10 (2019) or Ubuntu 20.04.

• Update: objectbox-swift 1.9.0. Existing projects may have to run pod repo update and pod update ObjectBox.

• Update: objectbox-android 3.7.0. If you are using Admin, make sure to update to io.objectbox:objectbox-android-objectbrowser:3.7.0.

2.2.1 - 2023-08-22

• Resolve an issue where not all query results are returned, when an entity constructor or property setter itself executes a query. #550

2.2.0 - 2023-08-08

• For Flutter apps running on Android 6 (or older): added loadObjectBoxLibraryAndroidCompat() to objectbox_flutter_libs (and objectbox_sync_flutter_libs). Use this to fix loading the ObjectBox library on these devices.

  Let us know if this works for you in #369! We might consider calling this automatically in a future release.

• Improve code generator performance if there are many entities with many constructor parameters.

• Throw StateError instead of crashing on closed Box, Query and PropertyQuery.

• Export query property classes to make them usable in user code.

• Resolve an issue where unexpected data was returned when doing a read operation in an entity constructor or property setter. #550

2.1.0 - 2023-06-13

• Support for integer and floating point lists: store 8-bit, 16-bit, 32-bit and 64-bit integer lists as well as 32-bit and 64-bit floating point lists (called "vectors" by ObjectBox).

  Use a typed_data class like Int16List, Uint16List or Float32List for large lists, it uses less memory and CPU. Otherwise just use a Dart number list.

  A simple example is a shape entity that stores a palette of RGB colors:

  @Entity()
  class Shape {
      @Id()
      int id = 0;
  
      // An array of RGB color values that are used by this shape.
      Int32List? palette;
  }
  

  This can also be useful to store vector embeddings produced by machine learning:

  @Entity()
  class ImageEmbedding {
      @Id()
      int id = 0;
  
      // Link to the actual image, e.g. on Cloud storage
      String? url;
  
      // The coordinates computed for this image (vector embedding)
      @Property(type: PropertyType.floatVector)
      List<double>? coordinates;
  }
  

  Note: for queries currently only the isNull and notNull conditions are supported.

• Changed PropertyType.char from a 8-bit signed integer to a 16-bit unsigned integer to match the ObjectBox database type.

• Fix put returning an incorrect error message in a rare case.

• Require at least Dart SDK 2.18 (shipped with Flutter 3.3.0).

• Let Store.awaitQueueCompletion actually wait on the async queue to become idle. It previously behaved like Store.awaitQueueSubmitted.

• Fix analysis event send failure breaking the code generator. #542

2.0.0 - 2023-03-21

• To upgrade to this major release run flutter pub upgrade objectbox --major-versions (or for Dart Native apps dart pub upgrade objectbox --major-versions).
• Breaking changes to generated code: run flutter pub run build_runner build (or dart run build_runner build for Dart Native apps) after updating!
• Added and updated async APIs in Box:
  • new getAsync, getManyAsync, getAllAsync,
  • new putAsync and putManyAsync which support objects with relations,
  • renamed the former putAsync to putQueuedAwaitResult,
  • new putAndGetAsync and putAndGetManyAsync which return a copy of the given objects with new IDs set.
  • new removeAsync, removeManyAsync and removeAllAsync.
• Add new async Query APIs: findAsync, findFirstAsync, findUniqueAsync, findIdsAsync and removeAsync.
• Support sending objects containing ToOne and ToMany across isolates, e.g. when using store.runInTransactionAsync. #340
• Store.attach (and Store.fromReference) do not longer accept a null model, which was not supported anyhow.
• Breaking change: renamed store.awaitAsyncSubmitted and awaitAsyncCompletion to awaitQueueSubmitted and awaitQueueCompletion to avoid any mix-up with the new async methods.
• Removed deprecated Store.runIsolated.
• Require at least Dart SDK 2.15 (shipped with Flutter 2.8.0).

1.7.2 - 2023-01-31

• Flutter Linux apps do not longer fail to run due to the shared ObjectBox C library not loading. #504
• Fixes writes failing with "Storage error (code -30786)", which may occur in some corner cases on iOS and some Android devices. #485
• Update: objectbox-c 0.18.1.
• Update: objectbox-swift 1.8.1. Existing projects may have to run pod repo update and pod update ObjectBox.
• Update: objectbox-android 3.5.1. If you are using Admin, make sure to update your objectbox-android-objectbrowser dependency.

1.7.1 - 2023-01-17

• Send anonymous data when running code generator to help us analyze its usage.

1.7.0 - 2022-12-14

• Support more concise method chaining when using a sort order with a query:

  // BEFORE
  final query = (box.query()..order(Person_.name)).build();
  // AFTER
  final query = box.query().order(Person_.name).build();
  

• Allow analyzer with major version 5. #487
• Generator not longer warns that it can not find the package source root if the output directory is the package root directory.
• Query: add .containsElement, deprecate .contains condition for List<String>. #481
• Add StorageException which is a ObjectBoxException with an errorCode (a OBX_ERROR code).
• Throw DbFullException instead of ObjectBoxException with message 10101 Could not put (error code OBX_ERROR_DB_FULL).
• Change Query.findUnique() to throw NonUniqueResultException instead of UniqueViolationException if there is more than one result.
• Update: objectbox-c 0.18.0.
• Update: objectbox-android 3.5.0.
• Update: objectbox-swift 1.8.1-rc.

1.6.2 - 2022-08-24

• Revert to objectbox-android 3.2.0 to restore query functionality (#460). If you are using Admin, make sure to update your objectbox-android-objectbrowser dependency.
• Generator messages should be more helpful, provide code location when possible and link to docs.

1.6.1 - 2022-08-22

• Store: add option to pass debug flags. #134
• Add // coverage:ignore-file to generated objectbox.g.dart skipping this file from coverage test.
• Increase supported analyzer to v4. #443
• Update documentation on Query streams using watch to highlight it is a single-subscription stream that can only be listened to once. Also updated code examples to not imply the stream is re-usable.
• Update: objectbox-android 3.2.1.

1.6.0 - 2022-06-27

• Require at least Dart SDK 2.14 (shipped with Flutter 2.5.0).
• When using the "All Exceptions" debug option in Visual Studio Code there is no longer an exception when initializing ObjectBox. #252
• Update: objectbox-c 0.17.0.
• Update: objectbox-android 3.2.0.

1.5.0 - 2022-05-11

• Add Store.runInTransactionAsync to run database operations asynchronously in the background (requires Flutter 2.8.0/Dart 2.15.0 or newer). #415
• Rename Store.runIsolated to runAsync, drop unused mode parameter, propagate errors and handle premature isolate exit. #415
• The native ObjectBox library is also searched for in the lib subfolder on desktop OS (macOS, Linux, Windows). This is where the install.sh script downloads it by default. E.g. it is no longer necessary to install the library globally to run dart test or flutter test.
• Windows: Support database directory paths that contain unicode (UTF-8) characters. #406
• Changed Query.stream to collect results in a worker isolate, which should typically be faster. #420
• Update: objectbox-c 0.16.0.
• Update: objectbox-android 3.1.3.
• Add new task with tag list Flutter example app that shows how to use relations. #419

1.4.1 - 2022-03-01

• Resolve "another store is still open" issue after Flutter hot restart (hot reload continues to work). #387
• Add Store.isClosed(). #390
• Add note to objectbox.g.dart on how to re-generate (update) it.

1.4.0 - 2022-02-22

• Support ObjectBox Admin for Android apps to browse the database. #148
• Add Store.runIsolated to run database operations (asynchronous) in the background (requires Flutter 2.8.0/Dart 2.15.0 or newer). It spawns an isolate, runs the given callback in that isolate with its own Store and returns the result of the callback. This is similar to Flutters compute, but with the callback having access to a Store. #384
• Add Store.attach to attach to a Store opened in a directory. This is an improved replacement for Store.fromReference to share a Store across isolates. It is no longer required to pass a Store reference and the underlying Store remains open until the last instance is closed. #376
• Add an option to change code-generator's output_dir in pubspec.yaml. #341
• Update: objectbox-c 0.15.2.
• Update: objectbox-android 3.1.2.
• Update: objectbox-swift 1.7.0.

1.3.0 - 2021-11-22

• Support annotating a single property with @Unique(onConflict: ConflictStrategy.replace) to replace an existing object if a conflict occurs when doing a put. #297

1.2.1 - 2021-11-09

• Fix Flutter apps crashing on iOS 15 simulator. #313
• Fix ToMany.applyToDb() not working after putting object with empty ToMany.
• Update objectbox-android to 3.0.1.

1.2.0 - 2021-08-31

• Add Query.findUnique() to find a single object matching the query.
• Add support for relations when using 3rd-party JSON serialization libraries.
• Fix generator when mixing backlinks and "standard" relations in the same entity (generated code had a syntax error).
• Fix @Backlink() annotation when specifying a ToOne relation by field name.
• Fix Query.find*() exception forwarding when a user-provided property converter throws.
• Increase supported analyzer dependency version to include v2.x major version.
• Update FlatBuffer dependency to the latest upstream version.

1.1.1 - 2021-07-09

• Add support for Query.param() on linked entities.
• Fix generated openStore() for apps that don't enable null-safety yet.

1.1.0 - 2021-07-06

• New openStore() in the generated code to simplify creating a store instance, especially on Flutter (uses application documents directory as a default).
• Add support for Entities used together with some custom code-generators (immutable objects, JSON, ...). See @Entity(realClass: ) new field and its docs.
• New Query.param() to support reusable queries (changing condition values before execution). See Reusing queries in docs.
• Rename semi-internal QueryRelationProperty to QueryRelationToOne and QueryRelationMany to QueryRelationToMany to help users pick the right link function: link() vs linkMany().
• Add support for the entity/property/relation rename or reset workflow. See Data model updates for details.
• Add support for ToOne relation cycles.
• Enforce you can only open the same database directory once (multiple parallel Store instances are not allowed).
• Fix macOS sandbox database directory permissions (see notes in Flutter-specific "Getting Started" docs).
• Fix ToMany showing duplicate items after adding them before reading the previous list.
• Fix invalid native free during store shutdown if large data was inserted (more than 64 kilobytes flatbuffer).
• FlatBuffers serialization performance improvements.
• Update to objectbox-android v2.9.2-RC3.

1.0.0 - 2021-05-18

• New Box putAsync() returning a Future and putQueued() for asynchronous writes.
• Query now supports auto-closing. You can still call close() manually if you want to free native resources sooner than they would be by Dart's garbage collector, but it's not mandatory anymore.
• Change the "meta-model" fields to provide completely type-safe query building. Conditions you specify are now checked at compile time to match the queried entity.
• Make property queries fully typed, PropertyQuery.find() now returns the appropriate List<...> type without casts.
• Query conditions inside() renamed to oneOf(), notIn() and notInList() renamed to notOneOf().
• Query stream and findStream() are replaced by QueryBuilder.watch(), i.e. box.query(...).watch().
• New Query stream() to stream objects all the while the query is executed in the background.
• New Query condition between() for integers and IDs.
• Store subscribe<EntityType>() renamed to watch().
• Store subscribeAll() replaced by a shared broadcast stream entityChanges.
• Entities can now contain final fields and they're properly stored/loaded (must be constructor params).
• Flutter desktop - native library is now downloaded automatically, same as for mobile platforms.
• Follow exception-vs-error throwing conventions - throwing errors when it's a permanent developer-caused error. Namely, there's a new UniqueViolationException thrown when an object you're trying to put() would violate a Unique() index.
• Even higher than usual amount of internal optimizations and improvements.
• Update to objectbox-c v0.14.0.
• Update to objectbox-swift v1.6.0.
• Update to objectbox-android v2.9.2-RC.

0.14.0 - 2021-04-01

• Fix non-nullable DateTime fields deserialization regression (introduced in v0.13.0) - fields were read as nanosecond instead of millisecond timestamp.
• Respect case-sensitivity setting in string PropertyQuery.count() with distinct = true (the result was always like with caseSensitive = true).
• Query findFirst() doesn't change Query object's offset and limit anymore.
• Change Query string conditions caseSensitive default to true, previously conditions were case-insensitive by default.
• Introduce Store constructor argument queriesCaseSensitiveDefault - allows changing the default value of caseSensitive in queries. This includes string PropertyQuery when using distinct = true.
• Get around Flutter's Android release build issue by changing the code the compiler had trouble with.
• Remove deprecated APIs from internal plugin interfaces (deprecation notice printed during Flutter build).
• Generator - update dependencies to their null-safe versions.
• Generated code - avoid more linter issues.

0.13.0 - 2021-03-19

• Null-safety support: both in the library and the generated code.
• Remove deprecated arguments offset, limit, withEqual from Query methods.
• More performance optimizations, mostly in our FlatBuffers fork.
• Fix FlatBuffers builder growing.
• Update to objectbox-c v0.13.0
• Update to objectbox-android v2.9.1
• Increase minimum SDK versions: Flutter v2.0 & Dart v2.12.

0.12.2 - 2021-03-11

• Fix ToMany relation internal ID assignment when multiple relations are used.
• Support ToMany relation code generation regardless of order of class definitions.

0.12.1 - 2021-03-05

• Further performance optimizations in our FlatBuffers fork.
• Avoid empty FFI structs - get rid of "INFO" messages with new Dart SDK v2.12.
• More internal changes in preparation for null-safety.

0.12.0 - 2021-02-26

• Recognize DateTime entity fields, setting PropertyType.date (millisecond storage precision).
• Support specifying PropertyType.dateNano for DateTime fields (nanosecond storage precision).
• Add Store.reference getter and Store.fromReference() factory - enabling access to store from multiple isolates.
• Add Store.subscribe<EntityType>() and Store.subscribeAll() data change event streams.
• Add multiple SyncClient event streams.
• Add Query conditions for lessOrEqual/greaterOrEqual on integer and double property types.
• Add self-assignable IDs: annotation @Id(assignable: true).
• Update to objectbox-c v0.12.0
• Update to objectbox-android v2.9.0
• Update to objectbox-swift v1.5.0
• Increase minimum SDK versions: Flutter v1.20 & Dart v2.9. Code generator already required Flutter v1.22 & Dart v2.10.

0.11.2 - 2021-03-11

• Fix ToMany relation internal ID assignment when multiple relations are used.
• Support ToMany relation code generation regardless of order of class definitions.

0.11.1 - 2021-02-26

• Fix List<String> and List<int> reading - replace official FlatBuffers lazy reader with a custom (eager) one.

0.11.0 - 2021-02-01

• Add ToOne<> class to wrap related entities. See examples for details. (thanks @Buggaboo for jump-starting this).
• Add ToMany<> class to wrap related entities. See examples for details.
• Significantly improve Box read and write performance.
• Change Box.put() and putMany() - now also update given object's ID property. Note: If you previously put() the same new object instance multiple times without setting id, the object will now be inserted only the first time, and overwritten on subsequent puts of the same instance, its ID is not zero anymore.
• Change Box.putMany() and Query.FindIds() to return fixed-size lists.
• Change Box.GetMany() to return a fixed-size list by default, with an option to return a growable list.
• Change @Id() annotation to optional - recognized automatically if there's an int id field (case insensitive).
• Make observable.dart part of objectbox.dart exports, no need to import it separately.
• Expose PutMode - allowing semantics choice between put, update and insert.
• Hide internal classes not intended for general use (e.g. all Model* classes).
• Rename versionLib() to nativeLibraryVersion().
• Change TxMode enum values to lowercase.
• Remove flags from the Property() annotation.

0.10.0 - 2020-12-01

• Add support for string array properties: List<String>.
• Add support for byte array properties: List<Int>, Uint8List, Int8List.
• Add @Index() and @Unique() property annotations (thanks @Buggaboo for #123).
• Add Query.remove() to remove all objects matching the query.
• Fix Query.findStream() to only rerun on changes to the queried type (thanks @RTrackerDev and @Buggaboo for #152).
• Change type field on @Property() annotation to PropertyType.
• Mark offset and limit query parameters deprecated, use offset() and limit() instead.
• Update to objectbox-swift 1.4.1
• Internal changes in preparation for null-safety (still waiting for our dependencies to migrate).

0.9.0 - 2020-11-12

• Update to objectbox-c 0.11.0
• Update to objectbox-android 2.8.0
• Change box.get(id) to return null instead of throwing when trying to read a non-existent object.
• Change the generator to skip read-only fields (getters)
• Add SyncClient to enable the new ObjectBox Sync
• Add "empty" query support using box.query(). (thanks @Buggaboo for #132)
• Expose lib/observable.dart to avoid linter isues in apps using objectbox. (thanks @cmengler for bringing this up in #141)
• Documentation and examples updates & improvements.
• Switch C-API binding code generation to package ffigen.

0.8.0 - 2020-10-13

• Update to objectbox-c 0.10.0.
• Update to objectbox-android 2.7.1.
• Update to objectbox-swift 1.4.0.
• String startsWith and endsWith condition: removed unused descending parameter, add caseSensitive parameter.
• String greaterThan/lessThan condition: withEqual is deprecated, use the greaterOrEqual/lessOrEqual condition instead.
• Query find/findIds offset and limit parameters are deprecated, set them using the equally named methods instead.
• New support to create a Dart Stream from a Query (thanks @Buggaboo for #88)

0.7.0 - 2020-08-14

• Flutter v1.20 support (move libs to separate package objectbox_flutter_libs, add it as a new dependency if you use Flutter)
• New property query support (thanks Jasm Sison for #75)
• New @Transient annotation to skip storing select properties (thanks Jasm Sison for #98)
• Handle Byte property as a signed int8 (was previously unsigned) to align with other bindings

0.6.4 - 2020-05-12

• Update to objectbox-swift 1.3.0
• Update to objectbox-android 2.5.1

0.6.3 - 2020-05-07

• Update FlatBuffers to 1.12.0
• Provide error hinting when DB can't be created (e.g. when an app docs directory isn't passed properly on Flutter).

0.6.2 - 2020-03-09

• Support large object arrays on 32-bit platforms/emulators.

0.6.1 - 2020-01-23

• Fix Flutter Android/iOS release build failures
• Updated to objectbox-c 0.8.2

0.6.0 - 2019-12-19

• Flutter iOS support
• Generator fixes and rework to support multiple entity files in addition to many entities in a single file. Please move objectbox-model.json to lib/ before running the generator.
• Simplified Android support (automatic dependency).
• Docs improvements
• Updated to objectbox-c 0.8.1

0.5.0 - 2019-11-18

• Dart 2.6 support - breaking change due to Dart 2.6 FFI changes. Please keep using 0.4 if you're on Dart 2.5/Flutter 1.9. (thanks Jasm Sison for #57)
• Docs fixes & improvements

0.4.0 - 2019-10-31

• Flutter Android support
• Queries for all currently supported types (thanks Jasm Sison for #27 and #46)
• More Box functions (count, isEmpty, contains, remove and their bulk variants) (thanks liquidiert for #42 and #45)
• Explicit write transactions (thanks liquidiert for #50)
• Resolved linter issues (thanks Gregory Sech for #31)
• Updated to objectbox-c 0.7.2
• First release on pub.dev

0.3.0 - 2019-10-15

• ID/UID generation and model persistence (objectbox-model.json)
• CI tests using GitHub Actions
• Code cleanup, refactoring and formatting (thanks Jasm Sison for #20 & #21)

0.2.0 - 2019-09-11

• UTF-8 support for Store and Box (thanks Jasm Sison for #14!)
• Bulk put and get functions (getMany, getAll, putMany)
• Updated to objectbox-c 0.7
• Basic Store options
• Minimal unit tests
• Removed reflection code, switched to model code generation instead
• Minimal Flutter Desktop example for Dart 2.5.0

0.1.0 - 2019-09-03

• Minimal Store setup
• Minimal Box with put and get