Fixed
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yb...@google.com
is SubjectJunction an entity?
from the error, looks like it is not an entity.
from the error, looks like it is not an entity.
am...@gmail.com
@Entity(
tableName = "meta_subject_junction",
primaryKeys = [ "metaId", "subjectId" ],
indices = [
Index(value = "subjectId"),
Index(value = "metaId") ],
foreignKeys = [
ForeignKey(
entity = MetadataEntity::class,
parentColumns = [ "id" ],
childColumns = [ "metaId" ],
onDelete = CASCADE),
ForeignKey(
entity = SubjectEntity::class,
parentColumns = [ "id" ],
childColumns = [ "subjectId" ],
onDelete = CASCADE)])
class SubjectJunction(var metaId: Long, var subjectId: Long)
tableName = "meta_subject_junction",
primaryKeys = [ "metaId", "subjectId" ],
indices = [
Index(value = "subjectId"),
Index(value = "metaId") ],
foreignKeys = [
ForeignKey(
entity = MetadataEntity::class,
parentColumns = [ "id" ],
childColumns = [ "metaId" ],
onDelete = CASCADE),
ForeignKey(
entity = SubjectEntity::class,
parentColumns = [ "id" ],
childColumns = [ "subjectId" ],
onDelete = CASCADE)])
class SubjectJunction(var metaId: Long, var subjectId: Long)
yb...@google.com
can you convert this into a sample app? It would be helpful to see where Room reports the error.
am...@gmail.com
I threw this together quickly, it does throw the error. I also gutted the Dao due to other dependencies, since this is a compilation error. If that's an issue let me know. If there are confusing combinations or java/kotlin I apologize as I was trying a lot of combinations just to ensure I wasn't bumping into a Kotlin bug.
yb...@google.com
this is the problem in the code:
@RawQuery(observedEntities = [ MetadataXmp::class, FolderEntity::class, SubjectJunction::class ])
internal abstract fun internalGetRelationImages(query: SupportSQLiteQuery): LiveData<List<MetadataXmp>>
You are asking it to observe MetadataXmp but it is not an entity.
see the docs for details:
https://developer.android.com/reference/android/arch/persistence/room/RawQuery.html#observedEntities()
@RawQuery(observedEntities = [ MetadataXmp::class, FolderEntity::class, SubjectJunction::class ])
internal abstract fun internalGetRelationImages(query: SupportSQLiteQuery): LiveData<List<MetadataXmp>>
You are asking it to observe MetadataXmp but it is not an entity.
see the docs for details:
am...@gmail.com
Ugh, that's a face-palm typo. Knew it had to be something like that. Thanks for taking the time to look at it.
Any chance that error could trace to the query instead of simply pointing at the non-entity we expect to be a non-entity?
[Location] references [Class] which must be annotated with @Entity
Any chance that error could trace to the query instead of simply pointing at the non-entity we expect to be a non-entity?
[Location] references [Class] which must be annotated with @Entity
yb...@google.com
you are right, the error does not tell you the real problem.
I'll re-open the docs to improve the messaging.
I'll re-open the docs to improve the messaging.
yb...@google.com
ok, I actually changed it to read Pojo's as well so your code will work. We'll traverse the Pojo and consider any @Relation / @Embedded as a table to watch.
If the pojo has no table references, we'll print a proper error.
If the pojo has no table references, we'll print a proper error.
am...@gmail.com
Even better, thanks!
Description
Version used: 1.1.0-alpha2
Devices/Android versions reproduced on: compile error
Error:(8, 1) Gradle: error: Entity class must be annotated with @Entity
public class MetadataXmp2 {
I can't seem to implement @Relation. I simplified the entities I'm using to this:
@Entity(tableName = "meta")
public class MetadataEntity2 {
@PrimaryKey(autoGenerate = true)
public long id;
public float rating;
public String label;
}
public class MetadataXmp2 /* or extends MetadataEntity2 */ {
@Embedded
public MetadataEntity2 metadata;
@Relation(
parentColumn = "id",
entityColumn = "metaId",
projection = "subjectId",
entity = SubjectJunction.class)
public List<Long> subjectIds;
@Relation(
parentColumn = "id",
entityColumn = "id",
projection = "documentUri",
entity = FolderEntity.class)
public List<String> parentUris;
}
I have an extension of the original MetadataEntity that works fine without @Relation. Am I missing a limitation here?