可重用的AbstractTableModel

Question

I am trying to create one AbstractTableModel instead of three. 我试图创建一个AbstractTableModel而不是三个。 The application uses the MVC architecture so the controller would update the model. 该应用程序使用MVC架构，因此控制器将更新模型。 I am a bit confused on how to do the column names, creation of an empty list, and setValueAt method. 我对如何执行列名，创建空列表和setValueAt方法感到困惑。 Should columns names and the data be a static ArrayList? 列名称和数据应为静态ArrayList吗？ The setValueAt method is currently done using a switch statement but could it be done easier with an ArrayList of arrays? setValueAt方法当前是使用switch语句完成的，但是使用ArrayList数组是否可以更轻松地完成？ The controller could call a method from the tableModel to empty the list and then the method would do a fireTableDataChanged(). 控制器可以从tableModel调用一个方法来清空列表，然后该方法将执行fireTableDataChanged（）。 The goal is reusability and to follow good coding practices while learning. 目标是可重用性，并在学习时遵循良好的编码习惯。

Answer 1

I decided to do two tables and I was able to combine two tables. 我决定做两个表，并且能够合并两个表。

package model;

import java.util.ArrayList;
import java.util.List;

import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableColumnModel;

import model.common.Order;
import model.common.Product;

public class OrderTableModel extends AbstractTableModel {

private List<Order> orderList;

private String[] columnNames = { "Product ID", "Description",
        "Supplier ID", "Order Quantity", "Unit of Measure", "Total Cost",
        "Order Date" };

  public OrderTableModel(ArrayList<Order> orderList) {
    this.orderList = orderList;
  }

  @Override
  public int getColumnCount() {
    return columnNames.length;
  }

  @Override
  public String getColumnName(int column) {
    switch (column) {
    case 0:
        return "<html>Product ID</html>";
    case 1:
        return "<html>Description</html>";
    case 2:
        return "<html>Supplier ID</html>";
    case 3:
        return "<html>Order<br></br>Quantity</html>";
    case 4:
        return "<html>Unit of<br></br>Measure</html>";
    case 5:
        return "<html>Total<br></br>Cost</html>";
    case 6:
        return "<html>Order<br></br>Date</html>";
    default:
        return null;
    }
  }

  @Override
  public int getRowCount() {
    return orderList.size();
  }

  @Override
  public boolean isCellEditable(int row, int column) {
    return false;
  }

  @Override
  public Object getValueAt(int row, int column) {
    Order order = (Order) orderList.get(row);

    switch (column) {
    case 0:
        return order.getProduct().getId();
    case 1:
        return order.getProduct().getProductDescription();
    case 2:
        return order.getSupplier().getId();
    case 3:
        return order.getProduct().getOrderQty();
    case 4:
        return order.getProduct().getUOM();
    case 5:
        return order.getTotalCost();
    case 6:
        return order.getDate();
    }
  }
}

The other tablemodel. 另一个表模型。

package model;

import java.util.ArrayList;
import java.util.List;

import javax.swing.table.AbstractTableModel;

import model.common.Product;

public class ProductTableModel extends AbstractTableModel {

  private List<Product> productList;

  private String[] columnNames = { "ID", "Description", "Inventory",
        "Minimum Quantity", "Cost", "Order Quantity" };

  public ProductTableModel() {
    productList = new ArrayList<Product>();
  }

  public ProductTableModel(ArrayList<Product> productList) {
    this.productList = productList;
  }

  public void resetTable() {
    productList.clear();
    fireTableDataChanged();
  }

  public void createEmptyTable() {
    while (productList.size() <= 12) {
        productList.add(new Product("", "", 0, 0, 0, 0));

    }
  }

  public void addRow(Product product) {
    productList.add(product);
    fireTableRowsInserted(productList.size() - 1, productList.size() - 1);
  }

  @Override
  public int getColumnCount() {
    return columnNames.length;
  }

  @Override
  public String getColumnName(int column) {
    switch (column) {
    case 0:
        return "<html>ID<br></html>";
    case 1:
        return "<html>Description<br></html>";
    case 2:
        return "<html>Inventory<br></html>";
    case 3:
        return "<html>Minimum<br>Quantity</html>";
    case 4:
        return "<html>Cost<br></html>";
    case 5:
        return "<html>Order<br>Quantity</html>";
    default:
        return null;
    }
  }

  @Override
  public int getRowCount() {
    return productList.size();
  }

  @Override
  public boolean isCellEditable(int row, int column) {
    return true;
  }

  @Override
  public Object getValueAt(int row, int column) {

    Product product = productList.get(row);

    switch (column) {
    case 0:
        return product.getId();
    case 1:
        return product.getProductDescription();
    case 2:
        return product.getQtyOnHand();
    case 3:
        return product.getMinQty();
    case 4:
        return product.getCost();
    case 5:
        return product.getOrderQty();
    default:
        throw new IndexOutOfBoundsException();
    }
  }

  @Override
  public void setValueAt(Object value, int row, int column) {

    Product product = productList.get(row);

    switch (column) {
    case 0:
        product.setId((String) value);
        break;
    case 1:
        product.setProductDescription((String) value);
        break;
    case 2:
        product.setQtyOnHand((int) value);
        break;
    case 3:
        product.setMinQty((int) value);
        break;
    case 4:
        product.setCost((double) value);
        break;
    case 5:
        product.setOrderQty((int) value);
        break;
    default:
        throw new IndexOutOfBoundsException();
    }

    fireTableCellUpdated(row, column);
  }
}

可重用的AbstractTableModel

问题描述

1 个解决方案

解决方案1
0 2015-06-26 01:45:49

可重用的AbstractTableModel

问题描述

1 个解决方案

解决方案1 0 2015-06-26 01:45:49

解决方案1
0 2015-06-26 01:45:49