Question

我想从数据库中填充32列的动态tableview，第一列包含员工的名称，剩下的31列用于标记员工从第1天到第31天的注意事项（复选框）。但是我可以用数据库填充tableview使用get和set方法的列（名称，复选框）。这是我的代码

CREATE FUNCTION [dbo].[udf-Str-Parse] (@String varchar(max),@Delimiter varchar(10))
Returns Table 
As
Return (  
    Select RetSeq = Row_Number() over (Order By (Select null))
          ,RetVal = LTrim(RTrim(B.i.value('(./text())[1]', 'varchar(max)')))
    From  (Select x = Cast('<x>'+ replace((Select @String as [*] For XML Path('')),@Delimiter,'</x><x>')+'</x>' as xml).query('.')) as A 
    Cross Apply x.nodes('x') AS B(i)
);
--Select * from [dbo].[udf-Str-Parse]('Dog,Cat,House,Car',',')
--Select * from [dbo].[udf-Str-Parse]('John Cappelletti was here',' ')
--Select * from [dbo].[udf-Str-Parse]('this,is,<test>,for,< & >',',')

这是 User.java

    String sql ="SELECT * FROM attendence";
    pst =   (PreparedStatement) con.prepareStatement(sql);
    rs=pst.executeQuery();

        while (rs.next()) {
            //get string from db,whichever way 
            String name=rs.getString(3);
            int day=rs.getInt(6); 
            data.add(new User(name,day!=0)); //converting integer to boolean and storing on data(Observable list)
        }

         etname.setCellValueFactory(new PropertyValueFactory<>("name"));
         col.setCellValueFactory(new PropertyValueFactory<>("day1));

         col.setCellFactory(new Callback<TableColumn<User, Boolean>,       TableCell<User, Boolean>>() {

         public TableCell<User, Boolean> call(TableColumn<User, Boolean> p) {

            return new CheckBoxTableCell<User, Boolean>();

        }
          });

           jTable.getColumns().add(etname,col);
            jTable.setItems(data);
             }

CheckBoxTableCell.java

   public class User {


      private final SimpleStringProperty ename;
      private BooleanProperty day1;

      User(String Ename,boolean day1)   
      {
        this.ename = new SimpleStringProperty(Ename);
        this.day1 = new SimpleBooleanProperty(day1);

        this.day1.addListener(new ChangeListener<Boolean>() {

            public void changed(ObservableValue<? extends Boolean> ov, Boolean t, Boolean t1) {

                System.out.println(enameProperty().get() + " invited: " + t1);
                System.out.println();
            }

        });            

    }


    public String getEname() {
        return ename.get();
      }


    public void setEname(String Ename) {
    ename.set(Ename);
   }


   public BooleanProperty day1Property() {
     return day1; 
    }


  public StringProperty enameProperty() {
    return ename;
    }

但不知道我如何处理32列。因此，对于我的两个问题，我需要任何人的大力帮助。 1）如何在数据库中填充动态tableview，复选框 2）当我按下按钮时，应该读取所有名称以及复选框状态（isSelected或not selected），如< / p>

jhon true true false ...... ....
玫瑰假假真......
george true true true false

答案将不胜感激。谢谢你提前。 .. ..

Answer 1

尝试使用此代码。

  private static final List<String> groups = Arrays.asList("Group 1", "Group 2", "Group 3", "Group 4"); //declared an array

  TableView<AttributeRow> attributeTable = new TableView<>(); //new Table
   for (String group : groups) {  //Creating dynamic column
        TableColumn<AttributeRow, Boolean> groupColumn = new TableColumn<>(group);
        groupColumn.setCellFactory(CheckBoxTableCell.forTableColumn(groupColumn));
        groupColumn.setCellValueFactory(cellData -> cellData.getValue().activeProperty(group));
        attributeTable.getColumns().add(groupColumn);
    }

和AttributeRow类

class AttributeRow {

private final Map<String, BooleanProperty> activeByGroup = new HashMap<>();


public AttributeRow(List<String> companyGroups) {
    for (String group : companyGroups) {

        activeByGroup.put(group, new SimpleBooleanProperty()) ;
    }
}

public final BooleanProperty activeProperty(String group) {

    return activeByGroup.get(group) ;
}

 public final boolean isActive(String group) {
    return activeProperty(group).get();
}

public final void setActive(String group, boolean active) {
    activeProperty(group).set(active);
}

对于加载复选框数据（true或false），我们可以使用以下方法

         String sql ="SELECT * FROM attendence";
         pst =   (PreparedStatement) con.prepareStatement(sql);
         rs=pst.executeQuery();
         while (rs.next()) {

               AttributeRow row = new AttributeRow(groups);

               for(int j=0;j<5;j++) //here j<5 because array size =5
                           {
                               int i=j+6;
                            int day=rs.getInt(i); //getting Integer value(note:sqlite does not support boolean datatype so i stored as integer with 0 or 1)

                            row.setActive(day!=0); //converted into boolean useing day!=0
                           }
                            jTable.getItems().add(row);

               }

javafx使用复选框从数据库填充动态tableview

1 个答案: