JTable，RowFilter和RowFilter.Entry

1. 请将RowFilter （ 它的ComparisonType ）放在一起

   • 正则expression式（string），数字，date

   和…一起

   • AND，OR，NOR

2. 不知道如何

   • 用AND，OR，NOR来处理空值
   • 如果正则expression式（string），数字，date有相同的逻辑或有“小差异”
   • 特别是如何比较Date值

3. 一些更长和详细的描述是受欢迎的

4. 在这个SSCCE看到我的基本问题进入frame.add(new JButton(new AbstractAction("Toggle filter") {

 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(); } }); } } 

Answer 1

我没有看到意外的结果。

1. 第一个谓词是直接的; 它包括两个重叠的集合，其中具有Value 13的行作为唯一成员。

    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并集，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的补充 ，其中第Value 13行交替包含和排除。

    return ((Number) entry.getValue(1)).intValue() > 10 != ((Number) entry.getValue(1)).intValue() < 50; 

附录：关于RowFilter.Entry ，我发现检查和 ， 或 不工厂使用私人类RowFilter.GeneralFilter定义的额外的index参数是有帮助的; 每个子类调用父对构造函数中提供的每个filter的include()实现。 相比之下， date ， 数量和正则expression式的工厂却没有; 相反，每个依赖于基础types可用的谓词。

附录：作为一个具体的例子，select两个模型date，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build包含所选date的两个filter。

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

结合他们在一个和andFilter 。

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

结果会selectd1和d2之间的行，但不包括d1和d2 。

修改的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(); } }); } }