Mastering Android Development with Kotlin

Insert CRUD operation

The insert operation will add new data into the database. What follows is its implementation:

    val NOTE = object : Crud<Note> { 
      ... 
      override fun insert(what: Note): Long { 
        val inserted = insert(listOf(what)) 
        if (!inserted.isEmpty()) return inserted[0] 
        return 0 
      } 
 
     override fun insert(what: Collection<Note>): List<Long> { 
       val db = DbHelper(name, version).writableDatabase 
       db.beginTransaction() 
       var inserted = 0 
       val items = mutableListOf<Long>() 
       what.forEach { item -> 
         val values = ContentValues() 
         val table = DbHelper.TABLE_NOTES 
         values.put(DbHelper.COLUMN_TITLE, item.title) 
         values.put(DbHelper.COLUMN_MESSAGE, item.message) 
         values.put(DbHelper.COLUMN_LOCATION_LATITUDE, item.location.latitude) values.put(DbHelper.COLUMN_LOCATION_LONGITUDE, ...