Add RxJava 3 support to Room [152427884]

Fixed

Feature Request

Status Update

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Description

[Deleted User]

created issue #1

Mar 26, 2020 10:26AM

Room has support for RxJava 2 but since RxJava 3 is out, RxJava 2 is now in maintenance mode and it'll be supported until February 28, 2021. RxJava 3 is not as big update as RxJava 2 was so I think it may not be a lot of work to support it in Room.

From Room point of view I think the biggest difference is new package structure:

https://github.com/ReactiveX/RxJava/wiki/What's-different-in-3.0#package-structure

Not sure if it affects Room but RxJava 3 supports Java 8:

https://github.com/ReactiveX/RxJava/wiki/What's-different-in-3.0#java-8

RxJava 3 can live next to RxJava 2 in a project and there is an interop library that helps with making them work together:

https://github.com/ReactiveX/RxJava/wiki/What's-different-in-3.0#rxjava-2x
but I think that it would still be good to have direct RxJava 3 support in Room to make the adoption of RxJava 3 faster.

Comments

m4...@gmail.com <m4...@gmail.com> #2Mar 27, 2020 07:21PM

Project: platform/frameworks/support
Branch: androidx-master-dev

commit b90079595f33f58fece04026a97faa0d243acdb1
Author: Yuichi Araki <yaraki@google.com>
Date: Wed Sep 18 16:55:49 2019

Change the way to detect mismatch between POJO and query

This fixes cursor mismatch warnings with expandProjection.

Bug: 140759491
Test: QueryMethodProcessorTest
Change-Id: I7659002e5e0d1ef60fc1af2a625c0c36da0664d8

M room/compiler/src/main/kotlin/androidx/room/processor/QueryMethodProcessor.kt
M room/compiler/src/main/kotlin/androidx/room/solver/TypeAdapterStore.kt
M room/compiler/src/main/kotlin/androidx/room/solver/query/result/PojoRowAdapter.kt
M room/compiler/src/test/kotlin/androidx/room/processor/QueryMethodProcessorTest.kt
M room/compiler/src/test/kotlin/androidx/room/testing/TestProcessor.kt

https://android-review.googlesource.com/1123258

https://goto.google.com/android-sha1/b90079595f33f58fece04026a97faa0d243acdb1

tz...@gmail.com <tz...@gmail.com> #3Apr 7, 2020 04:29PM

The following changes were cherrypicked through Coastguard (

https://android-build.googleplex.com/coastguard/)
Release Track: (

https://android-build.googleplex.com/coastguard/dashboard/6093116828680192/#/cherrypickHistory/all)
Created: 2019-10-14 17:23:42.610596+00:00
Changes: aosp/1123258

qn...@gmail.com <qn...@gmail.com> #4May 25, 2020 08:58PM

Project: platform/frameworks/support
Branch: androidx-master-dev

commit bdde5a1a970ddc9007b28de4aa29d60ffa588f08
Author: Yigit Boyar <yboyar@google.com>
Date: Thu Apr 16 16:47:05 2020

Re-factor how errors are dismissed when query is re-written

This CL changes how we handle errors/warnings if query is
re-written.
There was a bug in expandProjection where we would report warnings
for things that Room already fixes automatically (

b/140759491

).
The solution to that problem (I7659002e5e0d1ef60fc1af2a625c0c36da0664d8)
solved it by deferring validating of columns until after re-write
decision is made. Unfortunately, this required changing PojoRowAdapter
to have a dummy mapping until it is validating, make it hard to use
as it does have a non-null mapping which is not useful.

This CL partially reverts that change and instead rely on the log
deferring logic we have in Context. This way, we don't need to break
the stability of PojoRowAdapter while still having the ability to
drop warnings that room fixes. This will also play nicer when we
have different query re-writing options that can use more information
about the query results.

Bug: 153387066
Bug: 140759491
Test: existing tests pass
Change-Id: I2ec967c763d33d7a3ff02c1a13c6953b460d1e5f

M room/compiler/src/main/kotlin/androidx/room/log/RLog.kt
M room/compiler/src/main/kotlin/androidx/room/processor/QueryMethodProcessor.kt
M room/compiler/src/main/kotlin/androidx/room/solver/TypeAdapterStore.kt
M room/compiler/src/main/kotlin/androidx/room/solver/query/result/PojoRowAdapter.kt

https://android-review.googlesource.com/1288456

ai...@gmail.com <ai...@gmail.com> #5May 26, 2020 06:32AM

+1
Room is the only library I use that doesn't support RxJava 3 yet.

Meanwhile I'm using RxJavaBridge and these Kotlin extension to make the conversion as short as possible:

fun <T> io.reactivex.Maybe<T>.toV3Maybe(): Maybe<T> {
return RxJavaBridge.toV3Maybe(this)
}

fun <T> io.reactivex.Single<T>.toV3Single(): Single<T> {
return RxJavaBridge.toV3Single(this)
}

fun <T> io.reactivex.Observable<T>.toV3Observable(): Observable<T> {
return RxJavaBridge.toV3Observable(this)
}

fun <T> io.reactivex.Flowable<T>.toV3Flowable(): Flowable<T> {
return RxJavaBridge.toV3Flowable(this)
}

ap...@google.com <ap...@google.com> #6Jun 24, 2020 04:59PM

Project: platform/frameworks/support
Branch: androidx-master-dev

commit 2056c169a0689090adc59d0229f05e8a815e8881
Author: Daniel Santiago Rivera <danysantiago@google.com>
Date: Wed Jun 03 17:12:43 2020

Add RxJava 3 support to Room

Create a new artifact, room-rxjava3 that contains RxRoom that
uses io.reactivex.rxjava3 types. The processor is also updated
to identify the RxJava3 types in DAO return types to correctly
generate code that uses the new runtime.

Bug: 152427884
Test: ./gradlew :room:integration-tests:room-testapp:cC \
:room:room-compiler:test \
:room:room-rxjava3:test
Change-Id: I08e68d0ebd36d7434d2716532c0a7ee77fda3da9

M buildSrc/src/main/kotlin/androidx/build/PublishDocsRules.kt
M jetifier/jetifier/core/src/main/resources/default.config
M jetifier/jetifier/core/src/main/resources/default.generated.config
M jetifier/jetifier/migration.config
M room/compiler/src/main/kotlin/androidx/room/ext/javapoet_ext.kt
M room/compiler/src/main/kotlin/androidx/room/processor/ProcessorErrors.kt
M room/compiler/src/main/kotlin/androidx/room/processor/TransactionMethodProcessor.kt
M room/compiler/src/main/kotlin/androidx/room/solver/RxTypes.kt
M room/compiler/src/main/kotlin/androidx/room/solver/binderprovider/RxCallableQueryResultBinderProvider.kt
M room/compiler/src/main/kotlin/androidx/room/solver/binderprovider/RxQueryResultBinderProvider.kt
M room/compiler/src/main/kotlin/androidx/room/solver/prepared/binderprovider/RxPreparedQueryResultBinderProvider.kt
M room/compiler/src/main/kotlin/androidx/room/solver/shortcut/binderprovider/RxCallableDeleteOrUpdateMethodBinderProvider.kt
M room/compiler/src/main/kotlin/androidx/room/solver/shortcut/binderprovider/RxCallableInsertMethodBinderProvider.kt
A room/compiler/src/test/data/common/input/Rx3Room.java
A room/compiler/src/test/data/common/input/rxjava3/Completable.java
A room/compiler/src/test/data/common/input/rxjava3/Flowable.java
A room/compiler/src/test/data/common/input/rxjava3/Maybe.java
A room/compiler/src/test/data/common/input/rxjava3/Observable.java
A room/compiler/src/test/data/common/input/rxjava3/Single.java
M room/compiler/src/test/kotlin/androidx/room/processor/InsertionMethodProcessorTest.kt
M room/compiler/src/test/kotlin/androidx/room/processor/ShortcutMethodProcessorTest.kt
M room/compiler/src/test/kotlin/androidx/room/processor/TransactionMethodProcessorTest.kt
M room/compiler/src/test/kotlin/androidx/room/solver/TypeAdapterStoreTest.kt
M room/compiler/src/test/kotlin/androidx/room/testing/test_util.kt
M room/compiler/src/test/kotlin/androidx/room/writer/DaoWriterTest.kt
M room/integration-tests/testapp/build.gradle
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/dao/MailDao.java
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/dao/UserDao.java
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/dao/UserPetDao.java
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/test/MainThreadCheckTest.java
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/test/RxJava2Test.java
M room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/test/RxJava2WithInstantTaskExecutorTest.java
A room/integration-tests/testapp/src/androidTest/java/androidx/room/integration/testapp/test/RxJava3Test.java
A room/rxjava3/api/2.3.0-alpha02.txt
A room/rxjava3/api/current.txt
A room/rxjava3/api/public_plus_experimental_2.3.0-alpha02.txt
A room/rxjava3/api/public_plus_experimental_current.txt
A room/rxjava3/api/res-2.3.0-alpha02.txt
A room/rxjava3/api/res-current.txt
A room/rxjava3/api/restricted_2.3.0-alpha02.txt
A room/rxjava3/api/restricted_current.txt
A room/rxjava3/build.gradle
A room/rxjava3/src/main/AndroidManifest.xml
A room/rxjava3/src/main/java/androidx/room/rxjava3/EmptyResultSetException.java
A room/rxjava3/src/main/java/androidx/room/rxjava3/RxRoom.java
A room/rxjava3/src/test/java/androidx/room/rxjava3/RxRoomTest.java
M settings.gradle

https://android-review.googlesource.com/1323280

da...@google.com <da...@google.com> Jun 24, 2020 05:00PM

Marked as fixed.

Issue 152427884