JTable,RowFilter和RowFilter.Entry

时间:2013-07-25 10:01:43

标签: java swing jtable rowfilter

  1. 请将RowFilterits ComparisonType)放在一起我遇到问题

    • 正则表达式(字符串),数字,日期

    一起
    • AND,OR,NOR
  2. 不知道如何

    • 处理AND,OR,NOR
    • 的空值
    • 如果正则表达式(字符串),数字,日期具有相同的逻辑或“小差异”
    • 尤其如何比较日期值
  3. 欢迎提供更长详细的说明

  4. 在此SSCCE中查看我的基本问题frame.add(new JButton(new AbstractAction("Toggle filter") {

  5. enter image description here enter image description here

    import java.awt.BorderLayout;
    import java.awt.event.ActionEvent;
    import java.util.Calendar;
    import java.util.Date;
    import javax.swing.*;
    import javax.swing.table.DefaultTableModel;
    import javax.swing.table.TableModel;
    import javax.swing.table.TableRowSorter;
    
    public class JTableFilterDemo {
    
        private static TableRowSorter<TableModel> sorter;
        private Object[][] data = {{"A", 5, true, new Date()},
            {"B", 2, false, new Date()}, {"C", 4, false, new Date()},
            {"D", 8, true, new Date()}, {"E", 13, false, new Date()},
            {"F", 7, true, new Date()}, {"G", 55, false, new Date()},
            {"H", 6, false, new Date()}, {"I", 1, true, new Date()}};
        private String columnNames[] = {"Item", "Value", "Boolean", "Date"};
        private TableModel model = new DefaultTableModel(data, columnNames) {
            private static final long serialVersionUID = 1L;
    
            @Override
            public Class<?> getColumnClass(int column) {
                switch (column) {
                    case 1:
                        return Integer.class;
                    case 2:
                        return Boolean.class;
                    case 3:
                        return Date.class;
                    default:
                        return String.class;
                }
            }
        };
        private JTable table = new JTable(model);
        private Date modifDate = new Date();
    
        public JTableFilterDemo() {
            modifyDateInTable();
            table.setPreferredScrollableViewportSize(table.getPreferredSize());
            RowFilter<Object, Number> filter = new RowFilter<Object, Number>() {
                @Override
                public boolean include(RowFilter.Entry entry) {
                    //String str = (String) entry.getValue(0);//String
                    //return str.matches(("(?i)^a|^g"));//String
                    //Boolean bol = (Boolean) entry.getValue(2);//Boolean
                    //return bol.booleanValue() == false;//Boolean
                    //Date date = (Date) entry.getValue(3);//Date
                    //return date.getTime() > (long) (new Date().getTime());//Date
                    //return ((Number) entry.getValue(1)).intValue() % 2 == 0;//Integer
                    //return ((Number) entry.getValue(1)).intValue() > 0;//Integer
                    return ((Number) entry.getValue(1)).intValue() > 10
                            & ((Number) entry.getValue(1)).intValue() < 50;//AND with Integer
                }
            };
            sorter = new TableRowSorter<TableModel>(model);
            sorter.setRowFilter(filter);
            table.setRowSorter(sorter);
            JScrollPane scrollPane = new JScrollPane(table);
            JFrame frame = new JFrame("Filtering Table");
            frame.add(new JButton(new AbstractAction("Toggle filter") {
                private static final long serialVersionUID = 1L;
                private RowFilter<TableModel, Object> filter = new RowFilter<TableModel, Object>() {
                    @Override
                    public boolean include(javax.swing.RowFilter.Entry<? extends TableModel, ? extends Object> entry) {
                        //String str = (String) entry.getValue(0);//String
                        //return str.matches(("(?i)^a|^g"));//String
                        //Boolean bol = (Boolean) entry.getValue(2);//Boolean
                        //return bol.booleanValue() == false;//Boolean
                        //Date date = (Date) entry.getValue(3);//Date
                        //return date.getTime() > (long) (new Date().getTime());//Date
                        //return ((Number) entry.getValue(1)).intValue() % 2 == 0;//Integer
                        //return ((Number) entry.getValue(1)).intValue() > 0;//Integer
                        return ((Number) entry.getValue(1)).intValue() > 10
                                & ((Number) entry.getValue(1)).intValue() < 50;//AND with Integer
    
                        // --->  doesn't works
                        //return ((Number) entry.getValue(1)).intValue() > 10 |
                        //((Number) entry.getValue(1)).intValue() < 50;//OR with Integer
    
                        // ---> works, but initialized on 2nd. event
                        //return ((Number) entry.getValue(1)).intValue() > 10 != 
                        //((Number) entry.getValue(1)).intValue() < 50;//NOR with Integer 
                    }
                };
    
                @Override
                public void actionPerformed(ActionEvent e) {
                    if (sorter.getRowFilter() != null) {
                        sorter.setRowFilter(null);
                    } else {
                        sorter.setRowFilter(filter);
                    }
                }
            }), BorderLayout.SOUTH);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.add(scrollPane);
            frame.pack();
            frame.setVisible(true);
        }
    
        private void modifyDateInTable() {
            Calendar c = Calendar.getInstance();
            c.setTime(modifDate);
            c.add(Calendar.DATE, - 1);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 0, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +5);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 1, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +1);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 2, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, - 16);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 3, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +30);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 4, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +55);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 5, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +155);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 6, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, -23);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 7, 3);
        }
    
        public static void main(String[] args) {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    JTableFilterDemo jtfd = new JTableFilterDemo();
                }
            });
        }
    }
    

1 个答案:

答案 0 :(得分:7)

我没有看到意外的结果。

  1. 第一个谓词很简单;它包含两个重叠集的交集,其中行Value 13为唯一成员。

    return ((Number) entry.getValue(1)).intValue() > 10
        & ((Number) entry.getValue(1)).intValue() < 50;
    
  2. 第二个谓词是两个重叠集的 union ,包含所有行。

    return ((Number) entry.getValue(1)).intValue() > 10 |
        ((Number) entry.getValue(1)).intValue() < 50;
    
  3. 第三个谓词是第一个谓词补充,其中行Value 13交替包含和排除。

    return ((Number) entry.getValue(1)).intValue() > 10 != 
        ((Number) entry.getValue(1)).intValue() < 50;
    
  4. 附录:关于RowFilter.Entry,我发现检查工厂如何使用额外的内容会很有帮助私有类index中定义的RowFilter.GeneralFilter参数;每个子类为构造函数中提供的每个过滤器调用父项的include()实现。相反, date number regex 工厂不会;相反,每个都依赖于底层类型可用的谓词。

    附录:作为一个具体的例子,选择两个模型日期,例如第一个和倒数第二个。

    Date d1 = (Date) model.getValueAt(0, 3);
    Date d2 = (Date) model.getValueAt(model.getRowCount() - 2, 3);
    

    创建两个包含所选日期的过滤器。

    RowFilter<TableModel, Integer> low = 
        RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, d1, 3);
    RowFilter<TableModel, Integer> high = 
        RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, d2, 3);
    

    将它们合并到andFilter

    List<RowFilter<TableModel, Integer>> filters = Arrays.asList(low, high);
    final RowFilter<TableModel, Integer> filter = RowFilter.andFilter(filters);
    

    结果选择d1d2之间但不包括的行。

    修改了SSCCE:

    import java.awt.BorderLayout;
    import java.awt.event.ActionEvent;
    import java.util.Arrays;
    import java.util.Calendar;
    import java.util.Date;
    import java.util.List;
    import javax.swing.*;
    import javax.swing.table.DefaultTableModel;
    import javax.swing.table.TableModel;
    import javax.swing.table.TableRowSorter;
    
    public class JTableFilterDemo {
    
        private static TableRowSorter<TableModel> sorter;
        private Object[][] data = {{"A", 5, true, new Date()},
            {"B", 2, false, new Date()}, {"C", 4, false, new Date()},
            {"D", 8, true, new Date()}, {"E", 13, false, new Date()},
            {"F", 7, true, new Date()}, {"G", 55, false, new Date()},
            {"H", 6, false, new Date()}, {"I", 1, true, new Date()}};
        private String columnNames[] = {"Item", "Value", "Boolean", "Date"};
        private TableModel model = new DefaultTableModel(data, columnNames) {
            @Override
            public Class<?> getColumnClass(int column) {
                switch (column) {
                    case 1:
                        return Integer.class;
                    case 2:
                        return Boolean.class;
                    case 3:
                        return Date.class;
                    default:
                        return String.class;
                }
            }
        };
        private JTable table = new JTable(model);
    
        public JTableFilterDemo() {
            modifyDateInTable();
            table.setPreferredScrollableViewportSize(table.getPreferredSize());
            sorter = new TableRowSorter<TableModel>(model);
            table.setRowSorter(sorter);
            Date d1 = (Date) model.getValueAt(0, 3);
            Date d2 = (Date) model.getValueAt(model.getRowCount() - 2, 3);
            RowFilter<TableModel, Integer> low = RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, d1, 3);
            RowFilter<TableModel, Integer> high = RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, d2, 3);
            List<RowFilter<TableModel, Integer>> filters = Arrays.asList(low, high);
            final RowFilter<TableModel, Integer> filter = RowFilter.andFilter(filters);
            JScrollPane scrollPane = new JScrollPane(table);
            JFrame frame = new JFrame("Filtering Table");
            frame.add(new JButton(new AbstractAction("Toggle filter") {
                @Override
                public void actionPerformed(ActionEvent e) {
                    if (sorter.getRowFilter() != null) {
                        sorter.setRowFilter(null);
                    } else {
                        sorter.setRowFilter(filter);
                    }
                }
            }), BorderLayout.SOUTH);
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.add(scrollPane);
            frame.pack();
            frame.setLocationByPlatform(true);
            frame.setVisible(true);
        }
    
        private void modifyDateInTable() {
            Date modifDate = new Date();
            Calendar c = Calendar.getInstance();
            c.setTime(modifDate);
            c.add(Calendar.DATE, - 1);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 0, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +5);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 1, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +1);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 2, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, - 16);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 3, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +30);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 4, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +55);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 5, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, +155);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 6, 3);
            c.setTime(modifDate);
            c.add(Calendar.DATE, -23);
            modifDate = c.getTime();
            table.setValueAt(modifDate, 7, 3);
        }
    
        public static void main(String[] args) {
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    JTableFilterDemo jtfd = new JTableFilterDemo();
                }
            });
        }
    }