Room and RX Java











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I have a method in which a data sheet is committed.
    




private void saveItemsToDB(List<NewsEntity> newsEntityList) {

     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {

            newsDatabase.getNewsDao().deleteAll();

            Utils.log("******Delete All******");

           

            for (NewsEntity newsEntity : newsEntityList) {

                Utils.log("******Save " + newsEntity + "******");

                newsDatabase.getNewsDao().insert(newsEntity);

            }

            return null;

        })

                .subscribeOn(Schedulers.io())

                .observeOn(AndroidSchedulers.mainThread())

                .subscribe();

        compositeDisposable.add(disposable);

    }





I need to save them to the database. I work with Room. There is a method
   



  @Insert(onConflict = OnConflictStrategy.REPLACE)

  void insertAll(NewsEntity... newsEntities);

  

  @Insert(onConflict = OnConflictStrategy.REPLACE)

  void insert(NewsEntity newsEntity);


No saving occurs Link






rx-java2 android-room







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    up vote
    0
    down vote

    favorite












    I have a method in which a data sheet is committed.
        




    private void saveItemsToDB(List<NewsEntity> newsEntityList) {
    
     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {
    
            newsDatabase.getNewsDao().deleteAll();
    
            Utils.log("******Delete All******");
    
           
    
            for (NewsEntity newsEntity : newsEntityList) {
    
                Utils.log("******Save " + newsEntity + "******");
    
                newsDatabase.getNewsDao().insert(newsEntity);
    
            }
    
            return null;
    
        })
    
                .subscribeOn(Schedulers.io())
    
                .observeOn(AndroidSchedulers.mainThread())
    
                .subscribe();
    
        compositeDisposable.add(disposable);
    
    }





    I need to save them to the database. I work with Room. There is a method
       



      @Insert(onConflict = OnConflictStrategy.REPLACE)
    
  void insertAll(NewsEntity... newsEntities);
    
  
    
  @Insert(onConflict = OnConflictStrategy.REPLACE)
    
  void insert(NewsEntity newsEntity);


    No saving occurs Link






    rx-java2 android-room







    share|improve this question









    New contributor




    Сергей Бувака is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have a method in which a data sheet is committed.
          




      private void saveItemsToDB(List<NewsEntity> newsEntityList) {
      
     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {
      
            newsDatabase.getNewsDao().deleteAll();
      
            Utils.log("******Delete All******");
      
           
      
            for (NewsEntity newsEntity : newsEntityList) {
      
                Utils.log("******Save " + newsEntity + "******");
      
                newsDatabase.getNewsDao().insert(newsEntity);
      
            }
      
            return null;
      
        })
      
                .subscribeOn(Schedulers.io())
      
                .observeOn(AndroidSchedulers.mainThread())
      
                .subscribe();
      
        compositeDisposable.add(disposable);
      
    }





      I need to save them to the database. I work with Room. There is a method
         



        @Insert(onConflict = OnConflictStrategy.REPLACE)
      
  void insertAll(NewsEntity... newsEntities);
      
  
      
  @Insert(onConflict = OnConflictStrategy.REPLACE)
      
  void insert(NewsEntity newsEntity);


      No saving occurs Link






      rx-java2 android-room







      share|improve this question









      New contributor




      Сергей Бувака is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I have a method in which a data sheet is committed.
          




      private void saveItemsToDB(List<NewsEntity> newsEntityList) {
      
     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {
      
            newsDatabase.getNewsDao().deleteAll();
      
            Utils.log("******Delete All******");
      
           
      
            for (NewsEntity newsEntity : newsEntityList) {
      
                Utils.log("******Save " + newsEntity + "******");
      
                newsDatabase.getNewsDao().insert(newsEntity);
      
            }
      
            return null;
      
        })
      
                .subscribeOn(Schedulers.io())
      
                .observeOn(AndroidSchedulers.mainThread())
      
                .subscribe();
      
        compositeDisposable.add(disposable);
      
    }





      I need to save them to the database. I work with Room. There is a method
         



        @Insert(onConflict = OnConflictStrategy.REPLACE)
      
  void insertAll(NewsEntity... newsEntities);
      
  
      
  @Insert(onConflict = OnConflictStrategy.REPLACE)
      
  void insert(NewsEntity newsEntity);


      No saving occurs Link






      private void saveItemsToDB(List<NewsEntity> newsEntityList) {
      
     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {
      
            newsDatabase.getNewsDao().deleteAll();
      
            Utils.log("******Delete All******");
      
           
      
            for (NewsEntity newsEntity : newsEntityList) {
      
                Utils.log("******Save " + newsEntity + "******");
      
                newsDatabase.getNewsDao().insert(newsEntity);
      
            }
      
            return null;
      
        })
      
                .subscribeOn(Schedulers.io())
      
                .observeOn(AndroidSchedulers.mainThread())
      
                .subscribe();
      
        compositeDisposable.add(disposable);
      
    }





      private void saveItemsToDB(List<NewsEntity> newsEntityList) {
      
     Disposable disposable = Completable.fromCallable((Callable<Void>) () -> {
      
            newsDatabase.getNewsDao().deleteAll();
      
            Utils.log("******Delete All******");
      
           
      
            for (NewsEntity newsEntity : newsEntityList) {
      
                Utils.log("******Save " + newsEntity + "******");
      
                newsDatabase.getNewsDao().insert(newsEntity);
      
            }
      
            return null;
      
        })
      
                .subscribeOn(Schedulers.io())
      
                .observeOn(AndroidSchedulers.mainThread())
      
                .subscribe();
      
        compositeDisposable.add(disposable);
      
    }





      rx-java2 android-room




      rx-java2 android-room






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      share|improve this question




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      edited 15 hours ago









      Agilanbu

      699417




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      asked 15 hours ago









      Сергей Бувака

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      New contributor





      Сергей Бувака is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






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          According to RxJava2 documentation, it's not allowed to pass null through rx chain. I suppose, it's the cause of the problem. 



          Completable.fromCallable((Callable<Void>) () -> {
          
    ...
          
    return null; // don't do this
          
})


          If you don't want to return anything, use Completable.fromAction()






          share|improve this answer





















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            up vote
            0
            down vote













            According to RxJava2 documentation, it's not allowed to pass null through rx chain. I suppose, it's the cause of the problem. 



            Completable.fromCallable((Callable<Void>) () -> {
            
    ...
            
    return null; // don't do this
            
})


            If you don't want to return anything, use Completable.fromAction()






            share|improve this answer

























              up vote
              0
              down vote













              According to RxJava2 documentation, it's not allowed to pass null through rx chain. I suppose, it's the cause of the problem. 



              Completable.fromCallable((Callable<Void>) () -> {
              
    ...
              
    return null; // don't do this
              
})


              If you don't want to return anything, use Completable.fromAction()






              share|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                According to RxJava2 documentation, it's not allowed to pass null through rx chain. I suppose, it's the cause of the problem. 



                Completable.fromCallable((Callable<Void>) () -> {
                
    ...
                
    return null; // don't do this
                
})


                If you don't want to return anything, use Completable.fromAction()






                share|improve this answer












                According to RxJava2 documentation, it's not allowed to pass null through rx chain. I suppose, it's the cause of the problem. 



                Completable.fromCallable((Callable<Void>) () -> {
                
    ...
                
    return null; // don't do this
                
})


                If you don't want to return anything, use Completable.fromAction()







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 15 hours ago









                ConstOrVar

                97948




                97948






















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