This release contains a lot of new features and important improvements listed below;
Kotlin 1.5.0 is used as a default compiler and language version.
JSON performance improvements
JSON encoder and decoder were revisited and significantly rewritten,
which lead us to up to 2-3x times speedup in certain cases.
Additional details can be found in the corresponding issues: [1], [2].
Ability to specify alternative names during JSON decoding
The one of the most voted issues is fixed now — it is possible to specify multiple names for one property
using new @JsonNames annotation.
Unlike @SerialName, it only affects JSON decoding, so it is useful when dealing with different versions of the API.
We've prepared a documentation for you about it.
JsonConfiguration in public API
JsonConfiguration is exposed as a property of Json instance. You can use it to adjust behavior in
your custom serializers.
Check out more in the corresponding issue and the PR.
Generator for .proto files based on serializable Kotlin classes
Our implementation of Protocol Buffers format uses @Serializable Kotlin classes as a source of schema.
This is very convenient for Kotlin-to-Kotlin communication, but makes interoperability between languages complicated.
To resolve this issue, we now have a
schema generator that can produce .proto files out of Kotlin classes. Using it, you can keep Kotlin
classes as a source of truth and use traditional protoc compilers for other languages at the same time.
To learn more, check out the documentation for the new ProtoBufSchemaGenerator class or
visit the corresponding PR.
Note: this generator is on its experimental stage and any feedback is very welcomed.
Contextual serialization of generic classes
Before 1.2.0, it was impossible to register context serializer for generic class,
because contextual function accepted a single serializer.
Now it is possible to register a provider — lambda that allows to construct a serializer for generic class
out of its type arguments serializers. See the details in the documentation.
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Bumps kotlinx-serialization-json from 1.1.0 to 1.2.0.
Changelog
Sourced from kotlinx-serialization-json's changelog.
... (truncated)
Commits
fc9343f
Update Kotlin and add changelog for 1.2.0 (#1436)75566cc
Generator for .proto files based on serializable Kotlin classes (#1255)38adb1b
Support serializer<T> on JS IR when T is an interface (#1431)f8f37a3
Merge remote-tracking branch 'origin/master' into devc6025c9
Support contextual serialization of generic classes (#1416)59d3216
Make JsonConfiguration public and expose it for custom serializers (#1409)436cf83
Replace Array<String> in JsonNames with varargf7b7f19
Fix incorrect skipElement() when string literals contain ] or }6087755
Add@JsonNames
annotation83d0faa
Fix serializer lookup by KType for third party generics (#1397)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
.Dependabot commands and options
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