如何获取当前过滤后的TableModel
How to get the current filtered TableModel
我在下面有这段代码，其中，在 mouseClick 事件之后，它 根据 JList getSelectedItem().toString() 过滤行 ，这是代码：
try{
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(easypath.doctorBusiness_table.getModel());
easypath.doctorBusiness_table.setRowSorter(rowSorter);
String selected = easypath.drname_jlist.getSelectedValue().toString();
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected));
}
它工作正常，并根据所选字符串过滤行。
但是，我进一步希望根据日期过滤过滤后的模型，尽管日期过滤在 DefaultTableModel 上工作正常但是当我尝试传递当前 table 模型时它不起作用
所以，我希望我能在这里解释我的问题，因为我需要传递过滤TableModel日期过滤。任何建议都会有所帮助。
感谢您的宝贵时间
更新
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import javax.swing.JOptionPane;
import javax.swing.RowFilter;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
public class testFilter extends javax.swing.JFrame {
public testFilter() {
initComponents();
}
public void dateSearch() {
try {
DateFormat format = new SimpleDateFormat("dd/MM/yyyy");
String string1 = "01/07/2015";
Date startDate = format.parse(string1);
System.out.println(startDate);
String string2 = "31/07/2015";
Date endDate = format.parse(string2);
System.out.println(endDate);
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel());
dataTable.setRowSorter(rowSorter);
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(2);
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
} catch (Exception e) {
e.printStackTrace();
}
}
public void dateString_Search(){
try {
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel()); // String Filtering
dataTable.setRowSorter(rowSorter); // table here
String selected = "Nissan SUV"; // to get
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected)); // current TableModel
JOptionPane.showMessageDialog(null, dataTable.getRowCount()); // <--- For checking current Row Count
DateFormat format = new SimpleDateFormat("dd/MM/yyyy");
String string1 = "01/07/2015";
Date startDate = format.parse(string1);
System.out.println(startDate);
String string2 = "31/07/2015";
Date endDate = format.parse(string2);
System.out.println(endDate);
TableRowSorter<TableModel> filteredRowSorter = new TableRowSorter<>(dataTable.getModel()); //<-- Getting the current table Model After String Search
dataTable.setRowSorter(filteredRowSorter);
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(2);
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
filteredRowSorter.setRowFilter(rf);
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e);
}
}
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
dataTable = new javax.swing.JTable();
dateSearch_btn = new javax.swing.JButton();
stringSearch_btn = new javax.swing.JButton();
dateStringSearch_btn = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setResizable(false);
dataTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{"Nissan Micra", new Date(), "20000"},
{"Nissan SUV", new Date(), "30000"},
{"Nissan SUV", new Date(), "40000"},
{"Nissan SUV", new Date(), "50000"},
{"Nissan SUV", new Date(), "50000"},
{"Ford Mustang", new Date(), "70000"},
{"Ford Cobra", new Date(), "70000"},
{"Nissan SUV", new Date(), "40000"},
{"Nissan SUV", new Date(), "60000"},
{"Nissan SUV", new Date(), "65000"},
{"Nissan SUV", new Date(), "70000"},
{"Tata Sumo", new Date(), "70000"}
},
new String [] {
"Name", "Date", "Rate"
}
));
putDateInTable();
jScrollPane1.setViewportView(dataTable);
dateSearch_btn.setText("Date Search");
dateSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
dateSearch_btnActionPerformed(evt);
}
});
stringSearch_btn.setText("String Search");
stringSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
stringSearch_btnActionPerformed(evt);
}
});
dateStringSearch_btn.setText("Date+String");
dateStringSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
dateStringSearch_btnActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 463, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(dateSearch_btn)
.addGap(90, 90, 90)
.addComponent(stringSearch_btn)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(dateStringSearch_btn)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 223, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(dateSearch_btn)
.addComponent(stringSearch_btn)
.addComponent(dateStringSearch_btn))
.addContainerGap(25, Short.MAX_VALUE))
);
pack();
}
private void stringSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
try {
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel());
dataTable.setRowSorter(rowSorter);
String selected = "Nissan SUV";
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected));
JOptionPane.showMessageDialog(null, dataTable.getRowCount());
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e);
}
}
private void dateSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
dateSearch();
}
private void dateStringSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
dateString_Search();
}
private void putDateInTable() {
Date formatDate = new Date();
Calendar c = Calendar.getInstance();
c.setTime(formatDate);
c.add(Calendar.DATE, - 1);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 0, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +5);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 1, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +1);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 2, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, - 16);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 3, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +30);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 4, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +55);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 5, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +155);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 6, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -23);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 7, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -22);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 8, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -21);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 9, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -29);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 10, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -50);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 11, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +100);
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new testFilter().setVisible(true);
}
});
}
private javax.swing.JTable dataTable;
private javax.swing.JButton dateSearch_btn;
private javax.swing.JButton dateStringSearch_btn;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JButton stringSearch_btn;
}
这是过滤的修改代码，创建了 eventListeners dateSearch、stringSearch 和 dateStringSearch。前两个工作正常，但第三个工作不正常，即使我尝试创建一个获取当前模型。请建议，谢谢
为什么要在字符串搜索后尝试获取 TableModel？我说你不能这样unless you want to copy all the data and create a new TableModel.
当您对 JTable 进行过滤时，TableModel 不会更改。所有数据仍然存储在 TableModel 中。什么变化是View。 JTable 仅显示过滤后的行。
为什么您的过滤器代码看起来不像 Swing 过滤教程中的代码？在您的代码中，您创建了一个新的 TableRowSorter 并将其添加到 table。在 Swing 教程中，他们只是使用 setRowFilter(...) 方法重置 TableRowSorter 上的过滤器。这是次要的，但它向我证明您没有阅读本教程，或者如果您阅读了，为什么要修改代码以使其更复杂？
在我的评论中，我建议 you have an "andFilter" with 3 conditions. 我试图通过多种方式将其与具有 3 个条件的 if 语句进行比较来解释。为什么你的 "andFilter" 在你做 "date/string search" 的时候只有两个条件？
我从 "date search" 复制了代码并进行了以下更改以创建您的 date/string 过滤器：
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(3);
String selected = "Nissan SUV";
filters.add(RowFilter.regexFilter("(?i)" + selected)); // added the string filter
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
现在你有一个 "andFilter" 有 3 个条件。
但是更好的设计是创建像 getStartDateFilter()、getEndDateFilter()、getStringFilter() 这样的方法，这样您就不会重复代码。然后你可以像这样构建过滤器：
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(3);
filters.add(getStringFilter());
filters.add(getStartDateFilter());
filters.add(getEndDateFilter();
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
不幸的是，JTable 功能的设计将 TableSorter 及其底层 RowFilter 视为非模型功能。因此，它不会创建包装 TableModel 实例。相反，JTable 直接与排序器一起工作以正确显示行。
作为 hack，您可以创建自己的 TableModel 来包装整个底层 JTable，侦听其更新和 returns 出现在 JTable 中的单元格值。根据您打算在何处使用此类模型，这可能是一个可怕的想法或绝妙的想法。
看看下面的例子，了解我在说什么。请注意，以下示例中的监听和事件触发功能未正确完成。它需要做更多的工作才能正确侦听各种模型和 UI 事件并做出反应，因此模型中的日期始终反映 JTable 的内容。在体系结构上，不应将此模型视为合适的模型 class，但它允许其他表显示与底层 JTable 同步的数据。
public class UIBasedTableModel extends AbstractTableModel {
private final JTable _underlyingTable;
public UIBasedTableModel(JTable underlyingTable) {
_underlyingTable = underlyingTable;
_underlyingTable.addPropertyChangeListener("sorter", new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
fireTableDataChanged();
}
});
_underlyingTable.getModel().addTableModelListener(new TableModelListener() {
@Override
public void tableChanged(TableModelEvent e) {
fireTableDataChanged();
}
});
}
@Override
public int getRowCount() {
return _underlyingTable.getRowCount();
}
@Override
public int getColumnCount() {
return _underlyingTable.getColumnCount();
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
return _underlyingTable.getValueAt(rowIndex, columnIndex);
}
@Override
public Class<?> getColumnClass(int columnIndex) {
return _underlyingTable.getColumnClass(columnIndex);
}
@Override
public String getColumnName(int columnIndex) {
return _underlyingTable.getColumnName(columnIndex);
}
}
另一种选择是自行实现类似的 sorting/filtering 功能。这可能同时也是一个好主意和坏主意，因为您必须将排序正确地集成到 TableUI.
我很乐意详细说明，但必须知道您的要求。
我在下面有这段代码，其中，在 mouseClick 事件之后，它 根据 JList getSelectedItem().toString() 过滤行 ，这是代码：
try{
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(easypath.doctorBusiness_table.getModel());
easypath.doctorBusiness_table.setRowSorter(rowSorter);
String selected = easypath.drname_jlist.getSelectedValue().toString();
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected));
}
它工作正常，并根据所选字符串过滤行。
但是，我进一步希望根据日期过滤过滤后的模型，尽管日期过滤在 DefaultTableModel 上工作正常但是当我尝试传递当前 table 模型时它不起作用
所以，我希望我能在这里解释我的问题，因为我需要传递过滤TableModel日期过滤。任何建议都会有所帮助。
感谢您的宝贵时间
更新
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
import javax.swing.JOptionPane;
import javax.swing.RowFilter;
import javax.swing.table.TableModel;
import javax.swing.table.TableRowSorter;
public class testFilter extends javax.swing.JFrame {
public testFilter() {
initComponents();
}
public void dateSearch() {
try {
DateFormat format = new SimpleDateFormat("dd/MM/yyyy");
String string1 = "01/07/2015";
Date startDate = format.parse(string1);
System.out.println(startDate);
String string2 = "31/07/2015";
Date endDate = format.parse(string2);
System.out.println(endDate);
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel());
dataTable.setRowSorter(rowSorter);
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(2);
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
} catch (Exception e) {
e.printStackTrace();
}
}
public void dateString_Search(){
try {
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel()); // String Filtering
dataTable.setRowSorter(rowSorter); // table here
String selected = "Nissan SUV"; // to get
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected)); // current TableModel
JOptionPane.showMessageDialog(null, dataTable.getRowCount()); // <--- For checking current Row Count
DateFormat format = new SimpleDateFormat("dd/MM/yyyy");
String string1 = "01/07/2015";
Date startDate = format.parse(string1);
System.out.println(startDate);
String string2 = "31/07/2015";
Date endDate = format.parse(string2);
System.out.println(endDate);
TableRowSorter<TableModel> filteredRowSorter = new TableRowSorter<>(dataTable.getModel()); //<-- Getting the current table Model After String Search
dataTable.setRowSorter(filteredRowSorter);
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(2);
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
filteredRowSorter.setRowFilter(rf);
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e);
}
}
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
dataTable = new javax.swing.JTable();
dateSearch_btn = new javax.swing.JButton();
stringSearch_btn = new javax.swing.JButton();
dateStringSearch_btn = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setResizable(false);
dataTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{"Nissan Micra", new Date(), "20000"},
{"Nissan SUV", new Date(), "30000"},
{"Nissan SUV", new Date(), "40000"},
{"Nissan SUV", new Date(), "50000"},
{"Nissan SUV", new Date(), "50000"},
{"Ford Mustang", new Date(), "70000"},
{"Ford Cobra", new Date(), "70000"},
{"Nissan SUV", new Date(), "40000"},
{"Nissan SUV", new Date(), "60000"},
{"Nissan SUV", new Date(), "65000"},
{"Nissan SUV", new Date(), "70000"},
{"Tata Sumo", new Date(), "70000"}
},
new String [] {
"Name", "Date", "Rate"
}
));
putDateInTable();
jScrollPane1.setViewportView(dataTable);
dateSearch_btn.setText("Date Search");
dateSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
dateSearch_btnActionPerformed(evt);
}
});
stringSearch_btn.setText("String Search");
stringSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
stringSearch_btnActionPerformed(evt);
}
});
dateStringSearch_btn.setText("Date+String");
dateStringSearch_btn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
dateStringSearch_btnActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 463, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(dateSearch_btn)
.addGap(90, 90, 90)
.addComponent(stringSearch_btn)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(dateStringSearch_btn)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 223, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(dateSearch_btn)
.addComponent(stringSearch_btn)
.addComponent(dateStringSearch_btn))
.addContainerGap(25, Short.MAX_VALUE))
);
pack();
}
private void stringSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
try {
TableRowSorter<TableModel> rowSorter = new TableRowSorter<>(dataTable.getModel());
dataTable.setRowSorter(rowSorter);
String selected = "Nissan SUV";
rowSorter.setRowFilter(RowFilter.regexFilter("(?i)" + selected));
JOptionPane.showMessageDialog(null, dataTable.getRowCount());
} catch (Exception e) {
JOptionPane.showMessageDialog(null, e);
}
}
private void dateSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
dateSearch();
}
private void dateStringSearch_btnActionPerformed(java.awt.event.ActionEvent evt) {
dateString_Search();
}
private void putDateInTable() {
Date formatDate = new Date();
Calendar c = Calendar.getInstance();
c.setTime(formatDate);
c.add(Calendar.DATE, - 1);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 0, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +5);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 1, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +1);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 2, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, - 16);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 3, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +30);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 4, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +55);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 5, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +155);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 6, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -23);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 7, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -22);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 8, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -21);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 9, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -29);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 10, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, -50);
formatDate = c.getTime();
dataTable.setValueAt(formatDate, 11, 1);
c.setTime(formatDate);
c.add(Calendar.DATE, +100);
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new testFilter().setVisible(true);
}
});
}
private javax.swing.JTable dataTable;
private javax.swing.JButton dateSearch_btn;
private javax.swing.JButton dateStringSearch_btn;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JButton stringSearch_btn;
}
这是过滤的修改代码，创建了 eventListeners dateSearch、stringSearch 和 dateStringSearch。前两个工作正常，但第三个工作不正常，即使我尝试创建一个获取当前模型。请建议，谢谢
为什么要在字符串搜索后尝试获取 TableModel？我说你不能这样unless you want to copy all the data and create a new TableModel.
当您对 JTable 进行过滤时，TableModel 不会更改。所有数据仍然存储在 TableModel 中。什么变化是View。 JTable 仅显示过滤后的行。
为什么您的过滤器代码看起来不像 Swing 过滤教程中的代码？在您的代码中，您创建了一个新的 TableRowSorter 并将其添加到 table。在 Swing 教程中，他们只是使用 setRowFilter(...) 方法重置 TableRowSorter 上的过滤器。这是次要的，但它向我证明您没有阅读本教程，或者如果您阅读了，为什么要修改代码以使其更复杂？
在我的评论中，我建议 you have an "andFilter" with 3 conditions. 我试图通过多种方式将其与具有 3 个条件的 if 语句进行比较来解释。为什么你的 "andFilter" 在你做 "date/string search" 的时候只有两个条件？
我从 "date search" 复制了代码并进行了以下更改以创建您的 date/string 过滤器：
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(3);
String selected = "Nissan SUV";
filters.add(RowFilter.regexFilter("(?i)" + selected)); // added the string filter
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.AFTER, startDate));
filters.add(RowFilter.dateFilter(RowFilter.ComparisonType.BEFORE, endDate));
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
现在你有一个 "andFilter" 有 3 个条件。
但是更好的设计是创建像 getStartDateFilter()、getEndDateFilter()、getStringFilter() 这样的方法，这样您就不会重复代码。然后你可以像这样构建过滤器：
List<RowFilter<Object, Object>> filters = new ArrayList<RowFilter<Object, Object>>(3);
filters.add(getStringFilter());
filters.add(getStartDateFilter());
filters.add(getEndDateFilter();
RowFilter<Object, Object> rf = RowFilter.andFilter(filters);
rowSorter.setRowFilter(rf);
不幸的是，JTable 功能的设计将 TableSorter 及其底层 RowFilter 视为非模型功能。因此，它不会创建包装 TableModel 实例。相反，JTable 直接与排序器一起工作以正确显示行。
作为 hack，您可以创建自己的 TableModel 来包装整个底层 JTable，侦听其更新和 returns 出现在 JTable 中的单元格值。根据您打算在何处使用此类模型，这可能是一个可怕的想法或绝妙的想法。 看看下面的例子，了解我在说什么。请注意，以下示例中的监听和事件触发功能未正确完成。它需要做更多的工作才能正确侦听各种模型和 UI 事件并做出反应，因此模型中的日期始终反映 JTable 的内容。在体系结构上，不应将此模型视为合适的模型 class，但它允许其他表显示与底层 JTable 同步的数据。
public class UIBasedTableModel extends AbstractTableModel {
private final JTable _underlyingTable;
public UIBasedTableModel(JTable underlyingTable) {
_underlyingTable = underlyingTable;
_underlyingTable.addPropertyChangeListener("sorter", new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent evt) {
fireTableDataChanged();
}
});
_underlyingTable.getModel().addTableModelListener(new TableModelListener() {
@Override
public void tableChanged(TableModelEvent e) {
fireTableDataChanged();
}
});
}
@Override
public int getRowCount() {
return _underlyingTable.getRowCount();
}
@Override
public int getColumnCount() {
return _underlyingTable.getColumnCount();
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
return _underlyingTable.getValueAt(rowIndex, columnIndex);
}
@Override
public Class<?> getColumnClass(int columnIndex) {
return _underlyingTable.getColumnClass(columnIndex);
}
@Override
public String getColumnName(int columnIndex) {
return _underlyingTable.getColumnName(columnIndex);
}
}
另一种选择是自行实现类似的 sorting/filtering 功能。这可能同时也是一个好主意和坏主意，因为您必须将排序正确地集成到 TableUI.
我很乐意详细说明，但必须知道您的要求。