Room database insert error: Type of the parameter must be a class annotated with @Entity or a...
I am using Room database version 1.0.0 , and I created this BaseDao :
abstract class BaseDao<in T : BaseDataObject> {
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entity: T): Long
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(vararg entity: T): List<Long>
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entityList: List<T>): List<Long>
@Update
abstract fun update(entity: T): Int
@Update
abstract fun update(vararg entity: T): Int
@Delete
abstract fun delete(entity: T): Int
@Delete
abstract fun delete(vararg entity: T): Int
}
All of these methods except one works fine, problem is - the one with the entityList : List<T> parameter causing the error Type of the parameter must be a class annotated with @Entity or a collection/array of it. java.util.List<? extends T> entityList);. But i am using this method from subclass, and I am definitely annotated entity class with @Entity.
Subclass :
@Dao
abstract class ArticleDAO : BaseDao<Article>() {
}
Entity class :
@Entity(tableName = "table_article", foreignKeys = arrayOf(
ForeignKey(
entity = NewsList::class,
parentColumns = arrayOf("id"),
childColumns = arrayOf("newsListId")))
)
class Article : BaseDataObject() {
@Embedded(prefix = "source_")
var source: Source? = null
//...
}
I think that the problem might be in java code, in which Kotlin is translating, because in java code all the other method's parameters are with type T, but the broken one has List<? extends T>, so i think problem is in the wildcard, but i don't know how to deal with it.
android sqlite kotlin android-room asked Nov 11 at 20:03
Ruslan
147
add a comment |
I am using Room database version 1.0.0 , and I created this BaseDao :
abstract class BaseDao<in T : BaseDataObject> {
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entity: T): Long
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(vararg entity: T): List<Long>
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entityList: List<T>): List<Long>
@Update
abstract fun update(entity: T): Int
@Update
abstract fun update(vararg entity: T): Int
@Delete
abstract fun delete(entity: T): Int
@Delete
abstract fun delete(vararg entity: T): Int
}
All of these methods except one works fine, problem is - the one with the entityList : List<T> parameter causing the error Type of the parameter must be a class annotated with @Entity or a collection/array of it. java.util.List<? extends T> entityList);. But i am using this method from subclass, and I am definitely annotated entity class with @Entity.
Subclass :
@Dao
abstract class ArticleDAO : BaseDao<Article>() {
}
Entity class :
@Entity(tableName = "table_article", foreignKeys = arrayOf(
ForeignKey(
entity = NewsList::class,
parentColumns = arrayOf("id"),
childColumns = arrayOf("newsListId")))
)
class Article : BaseDataObject() {
@Embedded(prefix = "source_")
var source: Source? = null
//...
}
I think that the problem might be in java code, in which Kotlin is translating, because in java code all the other method's parameters are with type T, but the broken one has List<? extends T>, so i think problem is in the wildcard, but i don't know how to deal with it.
android sqlite kotlin android-room asked Nov 11 at 20:03
Ruslan
147
add a comment |
I am using Room database version 1.0.0 , and I created this BaseDao :
abstract class BaseDao<in T : BaseDataObject> {
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entity: T): Long
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(vararg entity: T): List<Long>
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entityList: List<T>): List<Long>
@Update
abstract fun update(entity: T): Int
@Update
abstract fun update(vararg entity: T): Int
@Delete
abstract fun delete(entity: T): Int
@Delete
abstract fun delete(vararg entity: T): Int
}
All of these methods except one works fine, problem is - the one with the entityList : List<T> parameter causing the error Type of the parameter must be a class annotated with @Entity or a collection/array of it. java.util.List<? extends T> entityList);. But i am using this method from subclass, and I am definitely annotated entity class with @Entity.
Subclass :
@Dao
abstract class ArticleDAO : BaseDao<Article>() {
}
Entity class :
@Entity(tableName = "table_article", foreignKeys = arrayOf(
ForeignKey(
entity = NewsList::class,
parentColumns = arrayOf("id"),
childColumns = arrayOf("newsListId")))
)
class Article : BaseDataObject() {
@Embedded(prefix = "source_")
var source: Source? = null
//...
}
I think that the problem might be in java code, in which Kotlin is translating, because in java code all the other method's parameters are with type T, but the broken one has List<? extends T>, so i think problem is in the wildcard, but i don't know how to deal with it.
android sqlite kotlin android-room asked Nov 11 at 20:03
Ruslan
147
I am using Room database version 1.0.0 , and I created this BaseDao :
abstract class BaseDao<in T : BaseDataObject> {
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entity: T): Long
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(vararg entity: T): List<Long>
@Insert(onConflict = OnConflictStrategy.REPLACE)
abstract fun insert(entityList: List<T>): List<Long>
@Update
abstract fun update(entity: T): Int
@Update
abstract fun update(vararg entity: T): Int
@Delete
abstract fun delete(entity: T): Int
@Delete
abstract fun delete(vararg entity: T): Int
}
All of these methods except one works fine, problem is - the one with the entityList : List<T> parameter causing the error Type of the parameter must be a class annotated with @Entity or a collection/array of it. java.util.List<? extends T> entityList);. But i am using this method from subclass, and I am definitely annotated entity class with @Entity.
Subclass :
@Dao
abstract class ArticleDAO : BaseDao<Article>() {
}
Entity class :
@Entity(tableName = "table_article", foreignKeys = arrayOf(
ForeignKey(
entity = NewsList::class,
parentColumns = arrayOf("id"),
childColumns = arrayOf("newsListId")))
)
class Article : BaseDataObject() {
@Embedded(prefix = "source_")
var source: Source? = null
//...
}
I think that the problem might be in java code, in which Kotlin is translating, because in java code all the other method's parameters are with type T, but the broken one has List<? extends T>, so i think problem is in the wildcard, but i don't know how to deal with it.
android sqlite kotlin android-room android sqlite kotlin android-room asked Nov 11 at 20:03
Ruslan
147
asked Nov 11 at 20:03
Ruslan
147
asked Nov 11 at 20:03
Ruslan
147
asked Nov 11 at 20:03
Ruslan
147
asked Nov 11 at 20:03
Ruslan
147
147
add a comment |
add a comment |
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