android ormlite foreign collection problem












0














I have a litte problem with Db selection.
I have masterproducts and dimensionsproducts. Normally a dimension has only one master product. But it can happen in rare cases that an entry is double. i get null on the onresult..



Relevant code:



    in DbMasterProduct Object:
@ForeignCollectionField(eager = true, foreignFieldName = "masterProduct")
private ForeignCollection<DbProduct> products;

in DbProduct Object:
@DatabaseField(foreign = true, foreignAutoRefresh = true, columnName = "ZMASTERPRODUCT", foreignColumnName = "ZPRODUCTNUMBER")
protected DbMasterProduct masterProduct;

my selecting method:
public void getProductByProductnumber(final String productnumber, final QueryTask.Callback<List<DbProduct>> callback){
new QueryTask<List<DbProduct>>(){
@Override
protected List<DbProduct> queryInBackground() throws SQLException {
Where<DbProduct, Integer> query = getHelper().getProductDao().queryBuilder().where().eq("ZPRODUCT_NUMBER", productnumber);
return query.query();
}
}.start(callback);
}

Error:
'SELECT * FROM `ZMASTERPRODUCTS` WHERE `ZPRODUCTNUMBER` = ?' and 1 args, got >1 results


The problem is at the moment is a many to one relation but i need many to many. But how can i change this?



thanks in advance for help










share|improve this question



























    0














    I have a litte problem with Db selection.
    I have masterproducts and dimensionsproducts. Normally a dimension has only one master product. But it can happen in rare cases that an entry is double. i get null on the onresult..



    Relevant code:



        in DbMasterProduct Object:
    @ForeignCollectionField(eager = true, foreignFieldName = "masterProduct")
    private ForeignCollection<DbProduct> products;

    in DbProduct Object:
    @DatabaseField(foreign = true, foreignAutoRefresh = true, columnName = "ZMASTERPRODUCT", foreignColumnName = "ZPRODUCTNUMBER")
    protected DbMasterProduct masterProduct;

    my selecting method:
    public void getProductByProductnumber(final String productnumber, final QueryTask.Callback<List<DbProduct>> callback){
    new QueryTask<List<DbProduct>>(){
    @Override
    protected List<DbProduct> queryInBackground() throws SQLException {
    Where<DbProduct, Integer> query = getHelper().getProductDao().queryBuilder().where().eq("ZPRODUCT_NUMBER", productnumber);
    return query.query();
    }
    }.start(callback);
    }

    Error:
    'SELECT * FROM `ZMASTERPRODUCTS` WHERE `ZPRODUCTNUMBER` = ?' and 1 args, got >1 results


    The problem is at the moment is a many to one relation but i need many to many. But how can i change this?



    thanks in advance for help










    share|improve this question

























      0












      0








      0







      I have a litte problem with Db selection.
      I have masterproducts and dimensionsproducts. Normally a dimension has only one master product. But it can happen in rare cases that an entry is double. i get null on the onresult..



      Relevant code:



          in DbMasterProduct Object:
      @ForeignCollectionField(eager = true, foreignFieldName = "masterProduct")
      private ForeignCollection<DbProduct> products;

      in DbProduct Object:
      @DatabaseField(foreign = true, foreignAutoRefresh = true, columnName = "ZMASTERPRODUCT", foreignColumnName = "ZPRODUCTNUMBER")
      protected DbMasterProduct masterProduct;

      my selecting method:
      public void getProductByProductnumber(final String productnumber, final QueryTask.Callback<List<DbProduct>> callback){
      new QueryTask<List<DbProduct>>(){
      @Override
      protected List<DbProduct> queryInBackground() throws SQLException {
      Where<DbProduct, Integer> query = getHelper().getProductDao().queryBuilder().where().eq("ZPRODUCT_NUMBER", productnumber);
      return query.query();
      }
      }.start(callback);
      }

      Error:
      'SELECT * FROM `ZMASTERPRODUCTS` WHERE `ZPRODUCTNUMBER` = ?' and 1 args, got >1 results


      The problem is at the moment is a many to one relation but i need many to many. But how can i change this?



      thanks in advance for help










      share|improve this question













      I have a litte problem with Db selection.
      I have masterproducts and dimensionsproducts. Normally a dimension has only one master product. But it can happen in rare cases that an entry is double. i get null on the onresult..



      Relevant code:



          in DbMasterProduct Object:
      @ForeignCollectionField(eager = true, foreignFieldName = "masterProduct")
      private ForeignCollection<DbProduct> products;

      in DbProduct Object:
      @DatabaseField(foreign = true, foreignAutoRefresh = true, columnName = "ZMASTERPRODUCT", foreignColumnName = "ZPRODUCTNUMBER")
      protected DbMasterProduct masterProduct;

      my selecting method:
      public void getProductByProductnumber(final String productnumber, final QueryTask.Callback<List<DbProduct>> callback){
      new QueryTask<List<DbProduct>>(){
      @Override
      protected List<DbProduct> queryInBackground() throws SQLException {
      Where<DbProduct, Integer> query = getHelper().getProductDao().queryBuilder().where().eq("ZPRODUCT_NUMBER", productnumber);
      return query.query();
      }
      }.start(callback);
      }

      Error:
      'SELECT * FROM `ZMASTERPRODUCTS` WHERE `ZPRODUCTNUMBER` = ?' and 1 args, got >1 results


      The problem is at the moment is a many to one relation but i need many to many. But how can i change this?



      thanks in advance for help







      android ormlite






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 23 '18 at 9:46









      AndreasAndreas

      9212




      9212
























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