title: How to check if data is inserted in Room Database
body: <p>I am using Room Database from the new Architecture components in my project.
  I am adding some data through dao, but when trying to retrieve it I am not getting it. Can you please suggest me how to check whether the insert was successful or not? Below are the codes to help you understand the problem.</p>
  
  <p>adding to database, I checked with debugger, this statement executed successfully.</p>
  
  <pre><code>appContext.db.rallyDAO().addVehicleListItem(vehicle)
  </code></pre>
  
  <p>Getting null from database on this statement after insert.</p>
  
  <pre><code>val v = appContext.db.rallyDAO().getVehicleListItem(it.vehicleID)
  </code></pre>
  
  <p>RoomDatabase</p>
  
  <pre><code>@Database(entities = arrayOf(Rally::class, Route::class, CheckPoints::class, Vehicles::class, VehicleListItem::class), version = 1)
  abstract class TSDRoom: RoomDatabase() {
      public abstract fun rallyDAO():RallyDAO
  }
  </code></pre>
  
  <p>Inside DAO</p>
  
  <pre><code>@Insert(onConflict = OnConflictStrategy.REPLACE)
      fun addVehicleListItem(vehicleListItem:VehicleListItem)
  
      @Query("select * from vehicles_submitted where vehicle_id LIKE :vehicleID")
      fun getVehicleListItem(vehicleID:String):VehicleListItem
  </code></pre>
  
  <p>VehicleListItem Entity</p>
  
  <pre><code>@Entity(tableName = "vehicles_submitted",
          foreignKeys = arrayOf(ForeignKey(entity = Rally::class,
                  parentColumns = arrayOf("rally_id"),
                  childColumns = arrayOf("rally_id"))))
  class VehicleListItem {
      @PrimaryKey
      @ColumnInfo(name = "vehicle_id")
      @SerializedName("vehicle_id")
      var vehicleID : String = ""
      @ColumnInfo(name = "driver_id")
      @SerializedName("driver_id")
      var driverID : String = ""
      @ColumnInfo(name = "vehicle_name")
      @SerializedName("vehicle_name")
      var vehicleName : String = ""
      @ColumnInfo(name = "driver_name")
      @SerializedName("driver_name")
      var driverName : String = ""
      @ColumnInfo(name = "driver_email")
      @SerializedName("driver_email")
      var driverEmail : String = ""
  
      @ColumnInfo(name = "rally_id")
      @SerializedName("rally_id")
      var rallyID: String = ""
  
      @ColumnInfo(name = "is_passed")
      @SerializedName("is_passed")
      var isPassed = false
  
      @ColumnInfo(name = "passing_time")
      @SerializedName("passing_time")
      var passingTime:String=""
  }
  </code></pre>