IssueTracker

Component used: Room
Version used: 1.0.0-beta1
Kotlin 1.1.51
Gradle 3.0.0-beta6

Devices/Android versions reproduced on: Nexus 5 - Android Marshmallow (6.0.1)

The model (data) class:
@Entity(tableName = "class")
data class Class(
        @PrimaryKey
        var id: Long = 0,
        var class_name: String = "")

Room fails in this case due to multiple constructors and suggests to use @Ignore. I'm not sure it's not picking the default constructor.

There are few workarounds for this problem:

1. Use @Ignore as suggested by Room.
2. Somehow it picks the appropriate constructor in this case:
@Entity(tableName = "class")
data class Class(
        @PrimaryKey
        var id: Long,
        var class_name: String = "")
3. Switch to deprecated kapt.generateStubs = true. Instead of using apply plugin: 'kotlin-kapt'.

I wish Room could pick up automatically the default no-arg constructor and in case it doesn't then show error and then developer can either use @Ignore or the new annotation to select default constructor.