Room insert and return id

    class StudentRepository private constructor(private val studentDao: StudentDao)
    {

        fun getStudents() = studentDao.getStudents()

        fun insertStudent(student: Student): Single<Long>? {
            return Single.fromCallable(
                Callable<Long> { studentDao.insertStudent(student) }
            )
        }

 companion object {

        // For Singleton instantiation
        @Volatile private var instance: StudentRepository? = null

        fun getInstance(studentDao: StudentDao) =
                instance ?: synchronized(this) {
                    instance ?: StudentRepository(studentDao).also { instance = it }
                }
    }
}

Source: stackoverflow.com

Similar codes

0 vote280 views1 answer
System out java quick
Java
0 vote243 views1 answer
Javafx radio button toggle group
Java
1 vote263 views2 answers
How to convert epoch time to date in java
Java
3 votes503 views3 answers
Spring mvc
Java Spring
1 vote303 views1 answer
Linear layout background color
Java
0 vote258 views1 answer
How to use auto generated id in java
Java
1 vote295 views1 answer
Java swing absolute position
Java
4 votes277 views1 answer
Java remove from arraylist while iterating
Java
0 vote286 views1 answer
Deps-jar
Java
0 vote324 views1 answer
JFrame frame = new JFrame ();
Java