How can I associate data (List with the table columns of a table view

Question

I have a class called Result (data that I want to show in my table) with several attributes.

public class Result
{
    private final SimpleStringProperty object;
    private List<SimpleStringProperty> listObject= new ArrayList<SimpleStringProperty>();
    private final Util util = new Util();

    public Result(String object, String[] listObject)
    {
    this.object= new SimpleStringProperty(object);
    this.objectList= util.transformar(listObject);
    }

    public String getObject()
    {
    return this.object.get();
    }
    public void setObject(String object)
    {
    this.hash.set(hash);
    }
    public String[] getListObject()
    {
    return util.transformar2(this.listObject);
    }

    public void setListObject(String[] listObject)
    {
    this.listObject= transformar(listObject);
    }
}

And I have my controller where I have an empty table and I add the columns and the objetcs Result. The controller has the attribute:

@FXML
private TableView tablaResultado;

The method were I do that is:

 private List<TableColumn> load()
    {
    List<TableColumn> listColumn = new ArrayList<TableColumn>();
    Object2 object2= new Object2();
    List<Result> listaResultado = object2.getResultado();
    ObservableList<Result> prueba = FXCollections
        .observableArrayList(listaResultado);
    TableColumn<Result, String> object= new TableColumn<Result, String>("object");
    direccion.setCellValueFactory(
        new PropertyValueFactory<Result, String>(
            "object"));
    listColumn.add(object);
    List<TableColumn<Result, String>> listObject = new ArrayList<TableColumn<Result, String>>();
    for (int i = 0; i < ((Result) listaResultado
        .get(0)).getListObject().length; i++)
    {
        TableColumn<Result, String> columna = new TableColumn<Result, String>(
            this.lenguaje.getProperty("listObject"+i);
        columna.setCellValueFactory(
            new PropertyValueFactory<Result, String>(
                "listObject[" + i + "]"));
        objectList.add(columna);
    }
    listColumn.addAll(objectList);
        ObservableList<TableColumn<Result, String>> prueba2 = FXCollections
            .observableArrayList(listObject);
        this.tablaResultado.setItems(prueba);
       this.tablaResultado.getColumns().addAll(object);
        for (int i = 0; i < prueba2.size(); i++)
        {
        this.tablaResultado.getColumns().addAll(prueba2.get(i));
        }
        }
    return listColumn ;

The result is the columns with their names and the data in the column object but the data in the columns listObject is empty. It has to be a list or something because I don't know the size of listObject.

If I change:

columna.setCellValueFactory(new PropertyValueFactory<Result, String ("listObject[" + i + "]"));

and I write:

columna.setCellValueFactory(new PropertyValueFactory<Result, String ("listObject"));

I got something like Ljava.lang.String;@bda3303 in that columns.

James_D · Accepted Answer · 2016-05-31T15:19:17.167

1

Do

final int index = i ;
columna.setCellValueFactory(cellData -> 
    new SimpleStringProperty(cellData.getValue().getListObject()[index]));

edited May 31 '16 at 15:19

answered May 31 '16 at 15:09

James_D

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score 0 · Answer 2 · edited May 23 '17 at 11:52

PropertyValueFactory does not "evaluate" an expression. It just tries to access a property of the table item. The default TableCells will use the toString method to get the text to display, which is why you get something like Ljava.lang.String;@bda3303 in the third version, see Java arrays printing out weird numbers, and text .

However you can write your own cellValueFactory:

public class Result
     public StringProperty listObjectProperty(int index) {
          return listObject.get(index);
     }

final int columnIndex = i;
columna.setCellValueFactory(cellData -> cellData.getValue().listObjectProperty(columnIndex));

Alternatively simply create a ObservableValue<String> with a constant value for the column value:

final int columnIndex = i;
columna.setCellValueFactory(cellData -> Bindings.createStringBinding(() -> cellData.getValue().getListObject()[columnIndex]));

How can I associate data (List with the table columns of a table view

2 Answers2

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