How to know current row is a new row ?
Hi,
i need to implement some logic in my BC4J JSP form commit process, but when it's a new row only.
how can i do that ?
Thanks,
Ricky H.P.
See:
re:How to identify inserted/modified row(s) in a VO
Regards
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Hi there,
I am a beginner in Visual Basic Express 2010. I have a Point of Sale program that uses DataGridView to display records from an external microsoft access
database using the fillby query.
It works, but it repopulates the same row each time, but i want to be able to display multiple records at the same time, a new row should be filled for
each click of the fillby button.
also I want to be able to delete any records if the customer suddenly decides to not buy an item after it has already been entered.
so actually 2 questions here:
1. how to populate a new row for each click of the fillby button
2. how to delete records from data grid view after an item has been entered
Thanks
VishwasHello,
The FillBy method loads data according to what the results are from the SELECT statement, so if there is one row then you get one row in the DataGridView, have two rows then two rows show up.
Some examples
Form load populates our dataset with all data as it was defined with a plain SELECT statement. Button1 loads via a query I created after the fact to filter on a column, the next button adds a new row to the existing data. When adding a new row it is appended
to the current data displayed and the primary key is a negative value but the new key is shown after pressing the save button on the BindingNavigator or there are other ways to get the new key by manually adding the row to the backend table bypassing the Adapter.
The following article with code shows this but does not address adapters.
Conceptually speaking the code in the second code block shows how to get the new key
Public Class Form1
Private Sub StudentsBindingNavigatorSaveItem_Click(
sender As Object, e As EventArgs) Handles StudentsBindingNavigatorSaveItem.Click
Me.Validate()
Me.StudentsBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.MyDataSet)
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'MyDataSet.Students' table. You can move, or remove it, as needed.
Me.StudentsTableAdapter.Fill(Me.MyDataSet.Students)
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Me.StudentsTableAdapter.FillBy(Me.MyDataSet.Students, ComboBox1.Text)
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Me.MyDataSet.Students.AddStudentsRow("Jane", "Adams", "Female")
End Sub
End Class
Get new key taken from
this article.
Public Function AddNewRow(ByVal sender As Customer, ByRef Identfier As Integer) As Boolean
Dim Success As Boolean = True
Try
Using cn As New OleDb.OleDbConnection With {.ConnectionString = Builder.ConnectionString}
Using cmd As New OleDb.OleDbCommand With {.Connection = cn}
cmd.CommandText = InsertStatement
cmd.Parameters.AddWithValue("@CompanyName", sender.CompanyName)
cmd.Parameters.AddWithValue("@ContactName", sender.ContactName)
cmd.Parameters.AddWithValue("@ContactTitle", sender.ContactTitle)
cn.Open()
cmd.ExecuteNonQuery()
cmd.CommandText = "Select @@Identity"
Identfier = CInt(cmd.ExecuteScalar)
End Using
End Using
Catch ex As Exception
Success = False
End Try
Return Success
End Function
In closing I have not given you a solution but hopefully given you some stuff/logic to assist with this issue, if not perhaps I missed what you want conceptually speaking.
Additional resources
http://msdn.microsoft.com/en-us/library/fxsa23t6.aspx
Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem. -
How to apply the constraint ONLY to new rows
Hi, Gurus:
I have one question as follows:
We need to migrate a legacy system to a new production server. I am required to add two columns to every table in order to record who updates the row most recently through triggers, and I should apply not null constraint to the columns . However, since legacy system already has data for every table, and old data does not have value for the 2 new columns. If we apply the constraint, all of existing rows will raise exception. I wonder if there is possibility to apply the constraint ONLY to new rows to come in future.
Thanks.
SamWe need to migrate a legacy system to a new production server. I am required to add two columns to every table in order to record who updates the row most recently through triggers, and I should apply not null constraint to the columns .
The best suggestion I can give you is that you make sure management documents the name of the person that came up with that hair-brained requirement so they can be sufficiently punished in the future for the tremendous waste of human and database resources they caused for which they got virtually NOTHING in return.
I have seen many systems over the past 25+years that have added columns such as those: CREATED_DATE, CREATED_BY, MODIFIED_DATE, MODIFIED_BY.
I have yet to see even ONE system where that information is actually useful for any real purpose. Many systems have application/schema users and those users can modify the data. Also, any DBA can modify the data and many of them can connect as the schema owner to do that.
Many tables also get updated by other applications or bulk load processes and those processes use generic connections that can NOT be tied back to any particular system.
The net result is that those columns will be populated by user names that are utterly useless for any auditing purposes.
If a user is allowed to modify a table they are allowed to modify a table. If you want to track that you should implement a proper security strategy using Oracle's AUDIT functionality.
Cluttering up ALL, or even many, of your tables with such columns is a TERRIBLE idea. Worse is adding triggers that server no other purpose but capture useless infomation but, because they are PL/SQL cause performance impacts just aggravates the total impact.
It is certainly appropriate to be concerned about the security and auditability of your important data. But adding columns and triggers such as those proposed is NOT the proper solution to achieve that security.
Before your organization makes such an idiotic decision you should propose that the same steps be taken before adding that functionality that you should take before the addition of ANY MAJOR structural or application changes:
1. document the actual requirement
2. document and justify the business reasons for that requirement
3. perform testing that shows the impact of that requirement on the production system
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5. demonstrate how that information will actually be used EFFECTIVELY for some business purpose
As regards items #1 and #2 above the requirement should be stated in terms of the PROBLEM to be solved, not some preconceived notion of the solution that should be used.
Your org should also talk to other orgs or other depts in your same org that have used your proposed solution and find out how useful it has been for them. If you do this research you will likely find that it hasn't met their needs at all.
And in your own org there are likely some applications with tables that already have such columns. Has anyone there EVER used those columns and found them invaluable for identifying and resolving any actual problem?
If you can't use them and their data for some important process why add them to begin with?
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1. Capture ALL DDL for the existing system into a version control system
2. Train your developers on using the version control system
3. Determining the proper configuration of the new server and system. It is almost a CERTAINTY that settings will get changed and performance will suffer even though you don't think you have changed anything at all.
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Oracle guru,
I am looking for a before or after trigger statement that will copy existing values inserted in the previous row into columns A & B. Then insert those values in a new row into column A & B if null? Same table. Hopefully my question is clear enough.
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Pierre957911 wrote:
Oracle guru,
I am looking for a before or after trigger statement that will copy existing values inserted in the previous row into columns A & B. Then insert those values in a new row into column A & B if null? Same table. Hopefully my question is clear enough.
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for each row
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pragma autonomous_transaction;
begin
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insert into test_table
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Hi,
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JDeveloper version 11.1.1.5.0
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Edited by: apusumit on May 16, 2012 1:46 AM
Edited by: apusumit on May 17, 2012 12:08 AMapusumit wrote:
sql_hash_value in v$session is showing 0 .presently create table is running
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I have a problem, The scenario is that when I click any folder that si in my JTable's first row, the table is update by removing all the rows and showing only the contents of my selected folder. Right now it's not removing the rows and instead throwing exceptions. The code is attached. The methods to look are upDateTabel(...) and clearTableData(....), after clearing all my rows then I proceed on adding my data to the Jtable and inserting rows but it's not being done. May be I have a problem in my DefaultTableModel class. Please see the code below what I am doing wrong and how should I do it. Any help is appreciated.
Thanks
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
public class SimpleTable extends JPanel{
/** Formats the date */
protected SimpleDateFormat formatter;
/** variable to hold the date and time in a raw form for the directory*/
protected long dateDirectory;
/** holds the readable form converted date for the directories*/
protected String dirDate;
/** holds the readable form converted date for the files*/
protected String fileDate;
/** variable to hold the date and time in a raw form for the file*/
protected long dateFile;
/** holds the length of the file in bytes */
protected long totalLen;
/** convert the length to the wrapper class */
protected Long longe;
/** Vector to hold the sub directories */
protected Vector subDir;
/** holds the name of the selected directory */
protected String dirNameHold;
/** converting vector to an Array and store the values in this */
protected File directoryArray[];
/** hashtable to store the key-value pair */
protected static Hashtable hashTable = new Hashtable();
/** refer to the TableModel that is the default*/
protected MyTableModel tableModel;
/** stores the path of the selected file */
protected static String fullPath;
/** stores the currently selected file */
protected static File selectedFilename;
/** stores the extension of the selected file */
protected static String extension;
protected int COLUMN_COUNT = 4;
protected Vector data = new Vector( 0, 1 );
protected final JTable table;
/** holds the names of the columns */
protected final String columnNames[] = {"Name", "Size", "Type", "Modified"};
public SimpleTable(File directoryArray[])
this.setLayout(new BorderLayout());
this.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
(SimpleTable.hashTable).clear();
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data.addElement( new MyObj( directoryArray[k].getName(), "", "File Folder", "" + dirDate ) );
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
else if(directoryArray[k].isFile())
dateDirectory = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateDirectory));
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data.addElement( new MyObj( directoryArray[k].getName(), longe + " Bytes", "", "" + fileDate ) );
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
tableModel = new MyTableModel();
table = new JTable( tableModel );
table.getTableHeader().setReorderingAllowed(false);
table.setRowSelectionAllowed(false);
table.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
table.setShowHorizontalLines(false);
table.setShowVerticalLines(false);
table.addMouseListener(new MouseAdapter()
public void mouseReleased(MouseEvent e)
Object eventTarget = e.getSource();
if( eventTarget == table )
upDateTable(table);
table.tableChanged( new javax.swing.event.TableModelEvent(tableModel) ) ;
DefaultTableCellRenderer D_headerRenderer = (DefaultTableCellRenderer ) table.getTableHeader().getDefaultRenderer();
table.getColumnModel().getColumn(0).setHeaderRenderer(D_headerRenderer );
((DefaultTableCellRenderer)D_headerRenderer).setToolTipText("File and Folder in the Current Folder");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
this.add(scrollPane, BorderLayout.CENTER);
* Searches the Hashtable and returns the path of the folder or the value.
public File findPath(String value)
return (File)((SimpleTable.hashTable).get(value));
* This clears the previous data in the JTable
public void clearTableData(JTable table)
for(int row = 0; row < table.getRowCount() ; row++)
//for (int col = 0; col < table.getColumnCount() ; col++)
tableModel.deleteSelections( row );
tableModel.fireTableStructureChanged();
tableModel.fireTableRowsDeleted(0,table.getRowCount());
//table.getModel().fireTableChanged(new TableModelEvent(table.getModel()));
private void upDateTable(JTable table)
if((table.getSelectedColumn() == 0) && ((table.getColumnName(0)).equals(columnNames[0])))
dirNameHold =(String) table.getValueAt(table.getSelectedRow(),table.getSelectedColumn());
File argument = findPath(dirNameHold);
if(argument.isFile())
CMRDialog.fileNameTextField.setText(argument.getName());
try
fullPath = argument.getCanonicalPath();
selectedFilename = argument.getCanonicalFile();
CMRDialog.filtersComboBox.removeAllItems();
extension = fullPath.substring(fullPath.lastIndexOf('.'));
CMRDialog.filtersComboBox.addItem("( " + extension + " )" + " File");
catch(IOException e)
System.out.println("THE ERROR IS " + e);
return;
else if(argument.isDirectory())
String path = argument.getName();
//find the system dependent file separator
//String fileSeparator = System.getProperty("file.separator");
CMRDialog.driveComboBox.addItem(" " + path);
subDir = Search.subDirs(argument);
/**TBD:- needs a method to convert the vector to an array and return the array */
directoryArray = new File[subDir.size()];
int indexCount = 0;
/** TBD:- This is inefficient way of converting a vector to an array */
Iterator e = subDir.iterator();
while( e.hasNext() )
directoryArray[indexCount] = (File)e.next();
indexCount++;
/** now calls this method and clears the previous data */
clearTableData(table);
(SimpleTable.hashTable).clear();
//data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data.addElement( new MyObj( directoryArray[k].getName(), "", "File Folder", "" + dirDate ) );
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
else if(directoryArray[k].isFile())
dateDirectory = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateDirectory));
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data.addElement( new MyObj( directoryArray[k].getName(), longe + " Bytes", "", "" + fileDate ) );
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
// tableModel.fireTableDataChanged();
// tableModel.fireTableRowsInserted(0,1);
table.revalidate();
table.validate();
class MyTableModel extends DefaultTableModel
int totalRows;
int totalCols;
public MyTableModel()
super();
setColumnIdentifiers (columnNames);
this.totalRows = data.size();
this.totalCols = columnNames.length;
// this will return the row count of your table
public int getRowCount()
return totalRows;
// this return the column count of your table
public int getColumnCount()
return totalCols;
// this return the data for each cell in your table
public Object getValueAt(int row, int col)
MyObj obj = (MyObj)data.elementAt( row );
if( obj != null )
if( col == 0 ) return( obj.first );
else if( col == 1 ) return( obj.last );
else if( col == 2 ) return( obj.third );
else if( col == 3 ) return( obj.fourth );
else return( "" );
return "";
// if you want your table to be editable then return true
public boolean isCellEditable(int row, int col)
return false;
// if your table is editable edit the data vector here and
// call table.tableChanged(...)
public void setValueAt(Object value, int row, int col)
protected void deleteSelections (int rows)
try
removeRow(rows);
catch(ArrayIndexOutOfBoundsException e)
System.out.println("The error in the row index " + rows);
fireTableDataChanged() ;
class MyObj
String first;
String last;
String third;
String fourth;
public MyObj( String f, String l, String t, String fo )
this.first = f;
this.last = l;
this.third = t;
this.fourth = fo;
#####################################The following code works fine but it doesn't show me the new updated date in my JTable. I tried to print the values that I am getting and it does give the values on the prompt but doesn't show me on the JTable only first two are shown and the rest of the table is filled with the same values. I don't know what's going on and am tired of this TableModel thing so pla. take a time to give me some suggestions. Thanks
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
public class SimpleTable extends JPanel {
/** Formats the date */
protected SimpleDateFormat formatter;
/** two-dimensional array to hold the information for each column */
protected Object data[][];
/** variable to hold the date and time in a raw form for the directory*/
protected long dateDirectory;
/** holds the readable form converted date for the directories*/
protected String dirDate;
/** holds the readable form converted date for the files*/
protected String fileDate;
/** variable to hold the date and time in a raw form for the file*/
protected long dateFile;
/** holds the length of the file in bytes */
protected long totalLen;
/** convert the length to the wrapper class */
protected Long longe;
/** Vector to hold the sub directories */
protected Vector subDir;
/** holds the name of the selected directory */
protected String dirNameHold;
/** converting vector to an Array and store the values in this */
protected File directoryArray[];
/** hashtable to store the key-value pair */
protected static Hashtable hashTable = new Hashtable();
/** refer to the TableModel that is the default*/
protected DefaultTableModel model;
/** stores the path of the selected file */
protected static String fullPath;
/** stores the currently selected file */
protected static File selectedFilename;
/** stores the extension of the selected file */
protected static String extension;
protected Vector m = new Vector(0,1);
/** holds the names of the columns */
protected final String columnNames[] = {"Name", "Size", "Type", "Modified"};
public SimpleTable(File directoryArray[])
this.setLayout(new BorderLayout());
this.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
(SimpleTable.hashTable).clear();
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
data[k][0] = directoryArray[k].getName();
data[k][2] = "File Folder";
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data[k][3] = dirDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
else if(directoryArray[k].isFile())
data[k][0] = directoryArray[k].getName();
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data[k][1] = longe + " Bytes";
dateFile = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateFile));
data[k][3] = fileDate;
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
model = new DefaultTableModel();
model.addTableModelListener( new TableModelListener(){
public void tableChanged( javax.swing.event.TableModelEvent e )
System.out.println("************ I am inside the table changed method ********" );
final JTable table = new JTable(model);
table.getTableHeader().setReorderingAllowed(false);
table.setRowSelectionAllowed(false);
table.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
table.setShowHorizontalLines(false);
table.setShowVerticalLines(false);
table.addMouseListener(new MouseAdapter()
/* public void mousePressed(MouseEvent e)
//System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
/* if(e.getClickCount() >= 2 &&
(table.getSelectedColumn() == 0) &&
((table.getColumnName(0)).equals(columnNames[0])))
//System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
upDateTable(table);
public void mouseReleased(MouseEvent e)
//System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
/* if(e.getClickCount() >= 2 &&
(table.getSelectedColumn() == 0) &&
((table.getColumnName(0)).equals(columnNames[0]))) */
//System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
upDateTable(table);
/** set the columns */
for(int c = 0; c < columnNames.length; c++)
model.addColumn(columnNames[c]);
/** set the rows */
for(int r = 0; r < data.length; r++)
model.addRow(data[r]);
DefaultTableCellRenderer D_headerRenderer = (DefaultTableCellRenderer ) table.getTableHeader().getDefaultRenderer();
table.getColumnModel().getColumn(0).setHeaderRenderer(D_headerRenderer );
((DefaultTableCellRenderer)D_headerRenderer).setToolTipText("File and Folder in the Current Folder");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
this.add(scrollPane, BorderLayout.CENTER);
* Returns the number of columns
public int getColumnTotal()
return columnNames.length;
* Returns the number of rows
public int getRowTotal(Object directoryArray[])
return directoryArray.length;
private void upDateTable(JTable table)
if((table.getSelectedColumn() == 0) && ((table.getColumnName(0)).equals(columnNames[0])))
dirNameHold =(String) table.getValueAt(table.getSelectedRow(),table.getSelectedColumn());
File argument = findPath(dirNameHold);
if(argument.isFile())
CMRDialog.fileNameTextField.setText(argument.getName());
try
fullPath = argument.getCanonicalPath();
selectedFilename = argument.getCanonicalFile();
CMRDialog.filtersComboBox.removeAllItems();
extension = fullPath.substring(fullPath.lastIndexOf('.'));
CMRDialog.filtersComboBox.addItem("( " + extension + " )" + " File");
catch(IOException e)
System.out.println("THE ERROR IS " + e);
return;
else if(argument.isDirectory())
String path = argument.getName();
//find the system dependent file separator
//String fileSeparator = System.getProperty("file.separator");
CMRDialog.driveComboBox.addItem(" " + path);
subDir = Search.subDirs(argument);
/**TBD:- needs a method to convert the vector to an array and return the array */
directoryArray = new File[subDir.size()];
int indexCount = 0;
/** TBD:- This is inefficient way of converting a vector to an array */
Iterator e = subDir.iterator();
while( e.hasNext() )
directoryArray[indexCount] = (File)e.next();
indexCount++;
/** now calls this method and clears the previous data */
clearTableData(table);
(SimpleTable.hashTable).clear();
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
m.clear();
data = null;
data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
for(int k = 0; k < directoryArray.length; k++)
if(directoryArray[k].isDirectory())
System.out.println("Inside the if part");
data[k][0] = directoryArray[k].getName();
table.setValueAt(directoryArray[k].getName(),k,0);
//model.fireTableCellUpdated(k,0);
data[k][2] = "File Folder";
table.setValueAt("File Folder",k,2);
//model.fireTableCellUpdated(k,2);
dateDirectory = directoryArray[k].lastModified();
dirDate = formatter.format(new java.util.Date(dateDirectory));
data[k][3] = dirDate;
table.setValueAt(dirDate,k,3);
//model.fireTableCellUpdated(k,3);
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
m.add(data);
model.addRow(m);
model.fireTableDataChanged();
else if(directoryArray[k].isFile())
System.out.println("******* Inside the else part *******");
data[k][0] = directoryArray[k].getName();
System.out.println("The Name is == " + data[k][0]);
table.setValueAt(directoryArray[k].getName(),k,0);
System.out.println("The table cell value of the name is == " + table.getValueAt(k,0));
//model.fireTableCellUpdated(k,0);
totalLen = directoryArray[k].length();
longe = new Long(totalLen);
data[k][1] = longe + " Bytes";
System.out.println("The length == " + data[k][1]);
table.setValueAt(longe + " Bytes",k,1);
System.out.println("The table cell value of the length is == " + table.getValueAt(k,1));
//model.fireTableCellUpdated(k,0);
dateFile = directoryArray[k].lastModified();
fileDate = formatter.format(new java.util.Date(dateFile));
data[k][3] = fileDate;
System.out.println("The modified date == " + data[k][3]);
table.setValueAt(fileDate,k,3);
System.out.println("The table cell value of the name is == " + table.getValueAt(k,3));
//model.fireTableCellUpdated(k,0);
(SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]); }
m.add(data);
model.addRow(m);
model.fireTableDataChanged();
// model.fireTableDataChanged();
// model.fireTableRowsInserted(0,1);
table.revalidate();
table.validate();
else
* Searches the Hashtable and returns the path of the folder or the value.
public File findPath(String value)
return (File)((SimpleTable.hashTable).get(value));
* This clears the previous data in the JTable
public void clearTableData(JTable table)
for(int row = 0; row < table.getRowCount() ; row++)
for (int col = 0; col < table.getColumnCount() ; col++)
table.setValueAt(null, row , col);
model.fireTableStructureChanged();
### -
Need to split data from one row into a new row redux
Hi folks,
I asked this question about eight months ago (see thread https://discussions.apple.com/message/23961353#23961353) and got an excellent response from forum regular Wayne Contello. However, I need to perform this operation again and when I attempted it recently, I am now greeted with a yellow warning triangle. Clicking it shows "This formula can’t reference its own cell, or depend on another formula that references this cell."
What I'm trying to do is the following:
I have an excel file that keeps track of members of a social group. The file places each member "unit" on a single row. The unit can be a single person or a couple. Columns are labeled "First1" "Last1" "Hometown1" "B-day1" while the second member of the unit is identified in columns like "First2" "Last2" etc.
What I'd like to do is duplicate those rows with two people (which I'll do by hand) but have a way of deleting the "xxxx2" data from one row and the "xxxx1" data from the duplicate row.
Wayne's illustrated solution was to create a blank sheet and enter the following formula in cell A2:
=OFFSET(Input Data::$A$2, INT((ROW()−2)÷2), COLUMN()−1+IF(MOD(ROW()−2, 2)=0, 0, 4)), which apparently worked fine for me last year but now is sending up an error flag. When I look at the formula, there is no clue except that which I quoted above.
Can anyone (or hopefully Wayne) take a second look at this and help me out? I can't imagine that it's a problem with using the newer version of Numbers, but who knows? I'm using version 3.2 (1861), which is the "new" Numbers.
Any help would really be appreciated.
Thanks!
-TodHi Tod,
The error message "This formula can’t reference its own cell, or depend on another formula that references this cell." may be because your table may be different from the one you were using for Wayne's solution. Numbers has Header Rows, Footer Rows and Header Columns. Such Headers in tables exclude themselves from formulas. Excel does not recognise them as headers. What table are you using now?
A screen shot of (the top left portion of) your table or a description of what you see under Menu > Table will help.
Regards,
Ian.
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