import android.arch.persistence.room.*
import android.arch.persistence.room.OnConflictStrategy.*
import kotlin.collections.ArrayList

@Dao
public abstract class BaseDAO<T> {
   @Insert(onConflict = IGNORE)
   public abstract long insert(T var1);

   @Insert(onConflict = IGNORE)
   @NotNull
   public abstract List insert(@NotNull List<T> var1);

   @Update
   public abstract void update(T var1);

   @Update
   public abstract void update(@NotNull List<T> var1);

   @Transaction
   public void upsert(@Nullable T obj) {
      if (obj != null) {
         long id = this.insert(obj);
         if (id <= -1) {
            this.update(obj);
         }
      }
   }

   @Transaction
   public void upsert(@Nullable List<T> list) {
      if (list != null) {
         List insertedResults = this.insert(list);
         List updateList = new ArrayList();

         for(int i=0; i < insertedResults.size(); i++) {
           if (list.get(i) <= -1) {
               updateList.add(list.get(i));
           }
         }

         if (updateList.size() > 0) {
            this.update(updateList);
         }
      }
   }
}