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

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Changelog

v1.1.2 (2020-03-18)

• ensure Query finalizer is only executed by Go GC after a native call finishes

v1.1.1 (2020-02-14)

• use temp directories in tests to prevent failure in recent Go versions checking-out modules as read-only

v1.1.0 (2019-12-16)

• add Box Insert and Update methods with stricter semantics than Put

• add AsyncBox with Put, Insert, Update, Remove

• add Query order and parameter alias support - see Queries docs for more info

• Code generator improvements

  • handle type-checker errors more gracefully (don't fail on failures in unneeded imports)

  • add clean command-line option to remove all generated files

  • time.Time will automatically use a built in converter to Unix timestamp (milliseconds)

  • improve model.json file diff-level compatibility with other language bindings

  • embedded struct and to-one relations cycle detection

  • support changing property type and resetting its stored value

  • nil check for embedded pointer structs in the generated code

  • minor bug fixes when the generated code wouldn't compile in some edge cases

• update to the latest ObjectBox-C library v0.8.1

• deprecate box.PutAsync() in favor of box.async().Put() i.e. using AsyncBox

• mark byte properties as unsigned

• fix getters on objects with missing relations and non-existent IDs in GetMany

• better windows installation experience using a PowerShell script

• make golint happier :)

v1.0.0 (2019-07-16)

This is quite a big release, bringing some new features and cleaning up the API.

• explicit transaction support via ObjectBox::RunInReadTx and ObjectBox::RunInWriteTx

• Go Modules support

• add objectbox namespace to tags to align with reflect.StructTag.Get unofficial spec

• optional lazy loading on to-many relations - lazy annotation

• box additions:

  • GetMany , RemoveMany, RemoveIds, ContainsIds, RemoveIds

  • to-many relation auxiliary methods: RelationIds , RelationPut, RelationRemove, RelationReplace

• switch default/recommended go:generate entity generator command from objectbox-gogen to //go:generate go run github.com/objectbox/objectbox-go/cmd/objectbox-gogen

• quite a few internal changes, renames and other refactorings (e.g. renamed PutAll to PutMany, removed Cursor, aligned model JSON with other bindings, ...)

v0.9.0 (2019-04-24)

• Fixed macOS build and 32-bit query support.

• Minor refactoring/linter issues

v0.9.0-rc (2019-02-22)

As we queued up quite a few changes, we're doing a release candidate first for you to test:

• Improved relations support

• Embedded structs

• Custom value-converter to store unsupported types & structs that can't be inlined/prefixed

• Recognize and handle type aliases and named types used as entity fields

• New Box methods: CountMax(), IsEmpty(), Contains() and PutAsyncWithTimeout()

• Query support AND & OR (combine conditions)

• New Query methods: Limit, Offset​

• New Query methods: Set*Params (type-based) - to run a cached query with custom parameters

• Query LT|GT|Between support for unsigned numbers

• Support numeric string ID in the entity

• Support for[]string as a field type

• Optional pass/return-by-value for slice-of-structs in the generated code

• Change strings to use hash-based instead of value-based indexes by default

• A new option to AlwaysAwaitAsync that can be enabled during initialization

v0.8.0 (2018-12-06)

• New Query API​

• Box and Query do not require manual closing anymore

• Support for renaming entities and their properties using UIDs

v0.7.1 (2018-11-30)

• Fixed wrong mapping for Go types (u)int and (u)int8. Luckily we noticed this very early: if you used those types in previous versions, please delete old database files.

• Transactions are now safely aborted in case of panics

v0.7.0 (2018-11-29)

• Changed file name of generated code, e.g. file endings for model is now ".obx.go"

• Foundation for all query conditions (final query API will come with the next version)

• Put(object) now assigns the new id to the object itself

v0.6.0 (2018-11-28)

Initial public release