Need help storing data
Hello. I came here for advice on on how to store data. What I am trying to do is take the data aquired by my DAQ, and store all it in a table as it's aquired in an organized way(3-columns, with a time stamp.) So far, I've looked at the Write to Text .vi and Write to Spreadsheet, along various other .vis I've found here, and I haven't been able to answer my problem. Using Write to text, I've been able to save things to text and append future data to them, but I ran in to the problem of not knowing how to append commas to keep it organized and give time(I would love for the data to look like the file Write to Text churns out.)
I haven't been able to run Write to spreadsheet yet, as until recently, I haven't been able to get rid of all the errors preventing from running, and I can't test it right now, though I would prefer to have everything in a text format, as the comp I use lacks Excel.
Solved!
Go to Solution.
Attachments:
Pulse Counter attempt mkII.vi 87 KB
No need to apologize. You're the one helping, after all. I just wanted to know if there was anything I could put in the .vi to prevent it.
Well, in addition to that I have another problem. For my experiment, I was told that having three channels would be best, so I copied the DAQ 3 times with each corresponing to a different channel, for more results.
What I want it to do is make the .vi so that counters corresponding to counters 2 and 3 correspond to channels 1 and 2 by default, rather than 0.
I'll upload the .vi and some screenshots, to make sure I'm doing things right.
Attachments:
Pulse Counter attempt mkII.vi 63 KB
What it does now.jpg 213 KB
What I want.jpg 218 KB
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Please help me....vinee wrote:
Hi,
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Following the complete code and error message....
import java.util.*;
import java.text.*;
public class stringToDate
// Integer value of date and time variables
int day=21;
int month = 1;
int year=07;
int hour=18;
int min=23;
int sec=14;
// Converting integer value into date
public void convertIntoDate()
DateFormat dateFormat;
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Entered string for date: 21/1/7 18:23:14
Converted into Date(dd/MM/yyyy HH:mm:ss): 21/01/0007 18:23:14
Exception in format 2: java.text.ParseException: Unparseable date: "21/1/7 18:23:14"
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Edited by: vinee on Oct 2, 2008 4:23 AMPlease re-read my last reply.
Once again : see [http://java.sun.com/docs/books/tutorial/i18n/format/simpleDateFormat.html]
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calcButton.setText("Calculate");
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addComponent(contentPane, orLabel, 280,40,100,30);
addComponent(contentPane, selectRadioButton, 335,40,350,30);
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addComponent(contentPane, amountField, 300,80,150,26);
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addComponent(contentPane, calcButton, 250,240,100,30);
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addComponent(contentPane, paymentField, 300,285,100,30);
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termField.setEditable(true);
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rateField.setEditable(true);
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amountField.requestFocusInWindow();
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rateField.setText("");
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termField.setEditable(false);
rateField.setEnabled(false);
rateField.setEditable(false);
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
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paymentField.setText("" + currency.format(monthlyPayment));
//send information to amortization text area
amortTextArea.append("Number\t");
amortTextArea.append(" Amount\t");
amortTextArea.append("Interest\t");
amortTextArea.append("Principle\t");
amortTextArea.append("Balance\n");
NewLoan = Loan;
for (int i = 1; i <= totalMonths; i++)
NewMonthlyInterest = MonthlyInterest * NewLoan;
Reduction = monthlyPayment - NewMonthlyInterest;
NewLoan = NewLoan - Reduction;
amortTextArea.append(" " + i +"\t");
amortTextArea.append(" " + currency.format(monthlyPayment) + "\t");
amortTextArea.append(" " + currency.format(NewMonthlyInterest)+ "\t");
amortTextArea.append(" " + currency.format(Reduction) + "\t");
amortTextArea.append(" " + currency.format(NewLoan) + "\n");
//resets fields if loan amount is less than zero
if((Loan <= 0 || Term <= 0 || Interest <= 0))
paymentField.setText("");
amortTextArea.setText("");
}//end calcualtion method
//clear method
void Clear()
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of clear method
//main method
public static void main(String args[])
Workshop5 f = new Workshop5();
f.setTitle("Carol's Mortgage Calculator");
f.setBounds(200,100,800,800);
f.setResizable(false);
f.setVisible(true);
}//end of main method
//exit method
void Exit()
System.exit(0);
}//end of exit method
}//program end
My data file is called: "InterestData.dat" and only contains the following text:
5.35, 5.5, 5.75Ok, now I am getting this error message:
cannot resolve symbol method lenght()
Please help me out here, this is due tomorrow and I've been killing myself on it...
attaching program with revised code included, see beginning of calculation method line 250:
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.* ;
import java.text.NumberFormat;
import java.text.DecimalFormat;
import java.io.*;
import javax.swing.JOptionPane;
public class Workshop5 extends JFrame implements ActionListener
//declare gui components
//declare labels
JPanel contentPane = new JPanel();
JPanel graphPane = new JPanel();
JLabel instructionLabel = new JLabel();
JLabel amountLabel = new JLabel();
JLabel orLabel = new JLabel();
JLabel comboBoxLabel = new JLabel();
JLabel termLabel = new JLabel();
JLabel rateLabel = new JLabel();
JLabel calcLabel = new JLabel();
JLabel paymentLabel = new JLabel();
JLabel tableLabel = new JLabel();
//declare font object
Font labelFont = new Font("Tahoma", Font.PLAIN, 16);
//declare text fields
JTextField amountField = new JTextField(20);
JTextField termField = new JTextField(20);
JTextField rateField = new JTextField(20);
JTextField paymentField= new JTextField(20);
//declare combo box for loan selection
JComboBox comboBox = new JComboBox();
//declare button group and radio buttons
ButtonGroup buttonGroup = new ButtonGroup();
JRadioButton enterRadioButton = new JRadioButton("Enter amount, term, & rate", true);
JRadioButton selectRadioButton = new JRadioButton("Select a preset term/rate loan", false);
//declare button objects
JButton clearButton = new JButton();
JButton calcButton = new JButton();
JButton quitButton = new JButton();
//declare text area for amortization
JTextArea amortTextArea = new JTextArea();
JTextArea testTextArea = new JTextArea();
//declare scroll bar for amortization table
JScrollPane scrollPane = new JScrollPane(amortTextArea, ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);
public Workshop5()
instructionLabel.setText("Choose one of the following payment calculation options:");
instructionLabel.setFont(new Font("Tahoma",Font.PLAIN,16));
//adds both buttons to button group
buttonGroup.add(enterRadioButton);
buttonGroup.add (selectRadioButton);
enterRadioButton.setFont(labelFont);
enterRadioButton.setBackground(Color.WHITE);
enterRadioButton.setContentAreaFilled(false);
enterRadioButton.addActionListener(this); //adds action listener to enter radio button
orLabel.setText("OR");
orLabel.setFont(new Font("Tahoma",Font.BOLD,18));
selectRadioButton.setFont(labelFont);
selectRadioButton.setBackground(Color.WHITE);
selectRadioButton.setContentAreaFilled(false);
selectRadioButton.addActionListener (this); //adds action listener to select radio button
amountLabel.setText("Enter mortgage amount");
amountLabel.setFont(new Font("Tahoma", Font.PLAIN,16));
amountField.requestFocusInWindow();
termLabel.setText("Enter term length in years:");
termLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
rateLabel.setText("Enter interest rate:");
rateLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBoxLabel.setText("Select a loan:");
comboBoxLabel.setFont(new Font("Tahoma", Font.PLAIN,14));
comboBox.setBackground(new Color(255,255,255));
comboBox.setFont(new Font("Tahoma", Font.PLAIN, 14));
comboBox.setEnabled(false);
ComboBox();
calcLabel.setText("Press Calculate button to determine monthly payment.");
calcLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
calcButton.setText("Calculate");
calcButton.setFont(new Font("Tahoma", Font.BOLD, 14));
calcButton.setBackground(new Color(202,255,112));
calcButton.addActionListener(this);
//define monthly payment label
paymentLabel.setText("Monthly payment:");
paymentLabel.setFont(new Font("Tahoma", Font.PLAIN, 16));
//define monthly payment text field
paymentField.setFont (new Font("Tahoma", Font.BOLD,16));
paymentField.setBackground(new Color(255,255,255));
paymentField.setEditable(false);
//define clear button
clearButton.setText("Clear");
clearButton.setFont(new Font("Tahoma", Font.BOLD,14));
clearButton.setBackground(new Color(202,255,112));
clearButton.addActionListener(this);
//define quit button
quitButton.setText("Quit");
quitButton.setFont(new Font("Tahoma", Font.BOLD,14));
quitButton.setBackground(new Color(202,255,112));
quitButton.addActionListener(this);
//define label for amortization table
tableLabel.setText ("Amoritization Table");
tableLabel.setFont(new Font("Tahoma", Font.BOLD, 16));
graphPane.setBackground(Color.WHITE);
//add components to content
getContentPane().add(contentPane);
contentPane.setLayout(null);
addComponent(contentPane, instructionLabel, 80,10,450,26);
addComponent(contentPane, enterRadioButton, 30,40,220,30);
addComponent(contentPane, orLabel, 280,40,100,30);
addComponent(contentPane, selectRadioButton, 335,40,350,30);
addComponent(contentPane, amountLabel, 100,80,220,26);
addComponent(contentPane, amountField, 300,80,150,26);
addComponent(contentPane, termLabel, 15,125,200,30);
addComponent(contentPane, termField, 195,125,125,30);
addComponent(contentPane, rateLabel, 62,160,200,30);
addComponent(contentPane, rateField, 195,165,125,30);
addComponent(contentPane, comboBoxLabel, 400,125,200,26);
addComponent(contentPane, comboBox, 400,155,150,30);
addComponent(contentPane, calcLabel, 100,200,400,30);
addComponent(contentPane, calcButton, 250,240,100,30);
addComponent(contentPane, paymentLabel, 150,285,200,30);
addComponent(contentPane, paymentField, 300,285,100,30);
addComponent(contentPane, clearButton, 100,330,100,30);
addComponent(contentPane, quitButton, 400,330,100,30);
addComponent(contentPane, tableLabel, 200,370,300,26);
addComponent(contentPane, scrollPane, 10,400,450,360);
addComponent(contentPane, graphPane, 475,400,305,360);
//add window listener to close window when user presses X
addWindowListener(new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
pack();
//method to add components
private void addComponent(Container container, Component c, int x, int y, int width, int height)
c.setBounds(x, y, width, height);
container.add(c);
//action performed method
public void actionPerformed(ActionEvent event)
Object source = event.getSource();
if (source == calcButton)
Calculate();
if (source == clearButton)
Clear();
if (source == quitButton)
Exit();
//defines active area based on user selection of mortgage calculation method
//if user chooses to enter the mortgage manually, combo box fields are inactive
if (source == enterRadioButton)
comboBox.setEnabled(false);
termField.setEnabled(true);
termField.setEditable(true);
rateField.setEnabled(true);
rateField.setEditable(true);
amountField.setText ("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText ("");
amortTextArea.setText("");
//if user chooses to select from a preset mortgage, rate and term fields are inactive
if (source == selectRadioButton)
comboBox.setEnabled(true);
termField.setEnabled(false);
termField.setEditable(false);
rateField.setEnabled (false);
rateField.setEditable(false);
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText ("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of action performed method
//combo box method
public void ComboBox()
String[] LoanArray = {" 7 years at 5.35 %", " 15 years at 5.50 %", " 30 years at 5.75 %"};
for (int i = 0; i < LoanArray.length; i++)
comboBox.addItem(LoanArray);
}//end combo box method
//calculation method
void Calculate()
//resets fields
paymentField.setText("");
amortTextArea.setText("");
//calculation variables
NumberFormat currency = NumberFormat.getCurrencyInstance();
//declare input stream object
InputStream istream;
//create a file object to refer to the outside file
File interestData = new File("InterestFile.dat");
//assign instream to the new file object
istream = new FileInputStream(interestData);
try
StringBuffer sb = new StringBuffer();
BufferedReader in = new BufferedReader(new FileReader(interestData));
String line = "";
while((line = in.readLine()) != null)
sb.append(line);
in.close();
String fileData = sb.toString();
String[] splitData = fileData.split(", ");
double [] yearlyInterestArray = new double[splitData.length()];
for(int j = 0; j < splitData.length(); j++)
yearlyInterestArray[j] = new Double(splitData[j]).doubleValue();
catch (IOException e)
JOptionPane.showMessageDialog(null, "File does not exist." + e.getMessage());
int [] termArray = {7, 15, 30}; //array of years
double [] yearlyInterestArray = { 5.35, 5.5, 5.75}; //array of interest
int totalMonths = 0; //total months
double Loan = 0.0; //amount of loan
double MonthlyInterest = 0.0; //monthly interest rate
double Payment = 0.0; //calculate payment
double monthlyPayment = 0.0; //calculate monthly payment
double Interest = 0.0; //variable for Interest Array input
int Term = 0; //variable for Term Array input
double NewMonthlyInterest = 0.0; //new interest amount
double NewLoan = 0.0; //new loan amount
double Reduction = 0.0; //principle reduction
//validate input
try
Loan = Double.parseDouble(amountField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid Entry. Please enter valid loan amount.", "Error", JOptionPane.WARNING_MESSAGE);
//resets input fields after error message
amountField.setText("");
amountField.requestFocusInWindow ();
//if select button is chosen
if (selectRadioButton.isSelected())
int index = comboBox.getSelectedIndex ();
Term = termArray[index];
Interest = yearlyInterestArray[index];
//if user chooses to enter mortgage information
else
if (enterRadioButton.isSelected())
//validates input
try
Term = Integer.parseInt(termField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid term length in years.", "Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
termField.setText("");
termField.requestFocusInWindow();
try
Interest = Double.parseDouble(rateField.getText());
catch (NumberFormatException e)
JOptionPane.showMessageDialog(null,"Invalid entry. Please enter valid rate (without percent symbol).","Error",JOptionPane.WARNING_MESSAGE);
//clears fields after error message
rateField.setText("");
rateField.requestFocusInWindow();
//perform calculations
if (Loan > 0)
Loan = Double.parseDouble(amountField.getText ());
MonthlyInterest = (Interest / 12)/100;
totalMonths = Term * 12;
monthlyPayment = Loan * MonthlyInterest *(Math.pow ((1 + MonthlyInterest), totalMonths)/(Math.pow((1 + MonthlyInterest), totalMonths)-1));
paymentField.setText("" + currency.format(monthlyPayment));
//send information to amortization text area
amortTextArea.append("Number\t");
amortTextArea.append(" Amount\t");
amortTextArea.append("Interest\t");
amortTextArea.append("Principle\t");
amortTextArea.append("Balance\n");
NewLoan = Loan;
for (int i = 1; i <= totalMonths; i++)
NewMonthlyInterest = MonthlyInterest * NewLoan;
Reduction = monthlyPayment - NewMonthlyInterest;
NewLoan = NewLoan - Reduction;
amortTextArea.append(" " + i +"\t");
amortTextArea.append (" " + currency.format(monthlyPayment) + "\t");
amortTextArea.append(" " + currency.format(NewMonthlyInterest)+ "\t");
amortTextArea.append(" " + currency.format(Reduction) + "\t");
amortTextArea.append(" " + currency.format(NewLoan) + "\n");
//resets fields if loan amount is less than zero
if((Loan <= 0 || Term <= 0 || Interest <= 0))
paymentField.setText("");
amortTextArea.setText("");
}//end calcualtion method
//clear method
void Clear()
amountField.setText("");
amountField.requestFocusInWindow();
termField.setText("");
rateField.setText("");
paymentField.setText("");
amortTextArea.setText("");
}//end of clear method
//main method
public static void main(String args[])
Workshop5 f = new Workshop5();
f.setTitle("Carol's Mortgage Calculator");
f.setBounds(200,100,800,800);
f.setResizable(false);
f.setVisible(true);
}//end of main method
//exit method
void Exit()
System.exit(0);
}//end of exit method
}//program end -
Need Help importing data using PHP to convert it into a single HTML line
Hi, My names Chance
I'm a 2nd year web design student and have been assigned a project by my teacher for a charity website
i found a tutorial of exactly what i need to do but im stuck on creating a script to import and convert php data
to a single html line
heres the link to the the script, if you scroll down to the bottom
where it says
RSS or XML Data Source
"The scrolling text can be imported from any source: RSS, XML or any other format.
For example, if you want to import data using PHP to convert it into a single HTML line to be displayed by the ticker, create a php script to import and convert the data, and include it directly in the DIV tag as follow"
this is what i need help doing
http://www.mioplanet.com/rsc/newsticker_javascript.htm
i already have the php code that i want to import
i just need to know how to import and convert my php script so im able
to make the the javascript from the link i provided to work
thank you so much for your time
if you have any question or answer please email me
[email protected]
thanks again hope to here from you soonHi
The instructions are there on the page you provided a link to!
What is it you do not understand?
PZ
www.pziecina.com -
Help needed in storing data in DSO or InfoCube
Hi Experts ,
I have a set of data which comes from R/3 in the following Format:
FG Base Model Option 1 Option 2 Option 3
FG1 BM 1 Opt1 Opt2 opt3
FG2 BM1 Opt 1 Opt2 Opt 4
FG3 BM3 Opt5 Opt6 Opt7
The data gets stored in the PSA in the above format.
But i want to load the data from the PSA to the DSO or InfoCube in the following format.I want that if i do a display data in the DSO or the Infocube the output should look like the below :
FG Base Model Option
FG1 BM1 Opt1
FG1 BM1 Opt2
FG1 BM1 Opt3
FG2 BM1 Opt1
FG2 BM1 Opt2
FG2 BM1 Opt4
FG3 BM3 Opt5
FG3 BM3 Opt6
FG3 BM3 Opt7
Is there any way to do this please help. Thanks in advance...Hi Samir,
Use transformation rule group in the transformations.
Here is one of the examples...the way you wanted.
http://help.sap.com/saphelp_nw70/helpdata/EN/44/32cfcc613a4965e10000000a11466f/content.htm
Thanks
Ajeet -
Need help on dates of photos uploaded in info
HI people
i have an issue with the storing of my photos . when i first got the system Adobe Elements it would store the photos and in the PHOTO INFO it recorded the date the photo was taken . I need this as i am a scrapbooked and it is useful for my journalling over the past few months it is only recording as the date TAKEN the date it was uploaded to the computer . which could be days later giving me the incorrect dates of events
Can anyone help me please to get it back to what it should be the DATE TAKEN
Photoshop ElementsHi,
Check this [Link1|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/3004a2d2-0653-2a10-779c-f5562b3fac39] [Link2|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/92914af6-0d01-0010-3081-ded3a41be8f2] & [Link3|https://wiki.sdn.sap.com/wiki/x/dDg ].
Regards,
Surjith -
PHP need help formating date, please.
I am working on my first database page using repeating fields
and a
connection to MySQL, and actually have it working! Yay!
Now I have a formatting problem, and would appreciate a bit
of help.
The first column of the repeating field is a date field,
which is stored
as a date type in mysql, and shows up in my table as
2008-03-12 (which
is how it was entered into the table). I would like to change
the
display to March 12, 2008. I have tried using the date
function, but
without success. The text that php is putting in the cell is
"2008-03-12", which I am guessing is not a valid timestamp. I
am also
guessing that this is why I get a date in 1969 when I try
this...
The page is here:
http://www.verodelmar.com/agendas.php
and the source is here:
http://www.verodelmar.com/agendas.txt
Thanks to anyone that takes the time to look!
HarveyJoe Makowiec wrote:
> On 16 Apr 2008 in macromedia.dreamweaver, eclipsme
wrote:
>
>> The first column of the repeating field is a date
field, which is
>> stored as a date type in mysql, and shows up in my
table as
>> 2008-03-12 (which is how it was entered into the
table). I would
>> like to change the display to March 12, 2008. I have
tried using the
>> date function, but without success. The text that
php is putting in
>> the cell is "2008-03-12", which I am guessing is not
a valid
>> timestamp. I am also guessing that this is why I get
a date in 1969
>> when I try this...
>
> Use DATE_FORMAT in your SQL statement, thus:
>
> SELECT field1, field2,
> DATE_FORMAT(dateField, '%M %e, %Y') AS myFormattedDate
> FROM myTable
>
>
http://dev.mysql.com/doc/refman/5.0/en/date-and-time-functions.html#function_date-format
>
> Another option is to convert the date from ISO format to
a Unix
> timestamp using PHP's strtotime() function, then
formatting it using
> date():
>
> <?php
> // Done in several steps for clarity. Can be done in one
step.
> $myUnixTimestamp =
strtotime($row_Recordset1['mydatefield']);
> $myFormattedDate = date('F j, Y', $myUnixTimestamp);
> echo $myFormattedDate;
> ?>
>
>
http://www.php.net/strtotime
>
http://www.php.net/date
>
The former I think I understand.
The latter I have printed out and will look at some more.
Actually in
theory I understand, but how to do that in my control panel
is what I
need to look at.
Thanks!
Harvey -
Hi,
I have a date format which is varchar2 and value is like 2009-03-31..i need to convert to date and it shouldbe like 31-MAR-09
i am getting like 0RA-01981 error..please help me in thatWhat are you doing with your "date" once you've converted it? Storing it in a DATE column in a table? Using it as part of a date calculation?
You ONLY need to worry about the format of a date when:
a) you are telling the database your string is actually a date (ie. on input into the db)
or
b) you are selecting date information to display to the front end/report
Once a date-string is in DATE format, it's stored in Oracle's internal date format. Since we're humans, it's difficult for us to understand that format, so anytime we view a date, it goes through a translation back into a string for display purposes only.
This can be done via two ways:
1) to_char(your_date_col_or_var, your_date_format) to set the format explicitly, eg: to_char(sysdate, 'dd/mm/yyyy')
or
2) using the default nls_date_format parameter. This can be changed, eg: "alter session set nls_date_format='dd/mm/yyyy hh24:mi:ss';"
If that doesn't help you, please provide more information on what you're doing, including sample data and/or code. -
Need help - select data from NCLOB column problem
Hi,
Im having problem retrieving data from NCLOB columns via ODBC. After SQLExecdirect on my SELECT statement call to SQLFetch gives me following error:
ORA-24806 LOB form mismatch
I tried following two ways of data retrieval:
SQLExecDirect(hstmt,(SQLTCHAR*)szSQLStatement,SQL_NTS);
SQLBindCol(hstmt,3,SQL_C_TCHAR,chBuffer,sizeof(chBuffer),&iDataLen);
SQLFetch(hstmt);
OR
SQLExecDirect(hstmt,(SQLTCHAR*)szSQLStatement,SQL_NTS);
SQLFetch(hstmt);
SQLGetData(hstmt,3,SQL_C_TCHAR,chBuffer,sizeof(chBuffer),&iDataLen);
Both times call to SQLFetch gives me ORA-24806 LOB form mismatch error.
INSERT and UPDATE for this table works just fine.
If I change NCLOB type to CLOB works just fine, but I will be storing Unicode data, so using CLOB cant be a solution
Any ideas appreciated.
Thanks in advance,
Vlad
Server:
Oracle 9.2 database on Windows 2000 Server
NLS_LANGUAGE = AMERICAN
NLS_TERRITORY = AMERICA
NLS_CHARACTERSET = WE8MSWIN1252
NLS_NCHAR_CHARACTERSET = AL16UTF16
Client:
Unicode C++ application, connects via Oracle 9.2 ODBC driver on Windows XP
NLS_LANG = AMERICAN_AMERICA.WE8MSWIN1252
CREATE TABLE my_nclob_table (
id number (10,0) NOT NULL ,
name nvarchar2 (255) NOT NULL ,
description nvarchar2 (255) NULL ,
definition nclob NOT NULL ,
creation date NOT NULL ,
lastmodified date NOT NULL ,
CONSTRAINT PK_cat_pricelist PRIMARY KEY
id
#define nil NULL
#define null NULL
#define SQL_ERR(__sqlerr__) (((__sqlerr__) != SQL_SUCCESS) && ((__sqlerr__) != SQL_SUCCESS_WITH_INFO))
#define STOP_IF_SQL_ERR(__sqlerr__) \
do \
if (SQL_ERR(__sqlerr__)) goto stop_; \
} while (false)
void eqTestOracleLOBSelect(void)
SQLHENV henv = null;
SQLHDBC hdbc = null;
SQLHSTMT hstmt = null;
SQLRETURN retcode = SQL_SUCCESS;
TCHAR szSQLStatement[] = T("select id, name, definition from mynclob_table");
int iFetchedRows = 0;
TCHAR szMsg[512];
TCHAR chBuffer[2049];
SQLLEN iDataLen = 0;
try
retcode = eqOpenConnectionODBC(_T("myTestDsn"),_T("user"),_T("pwd"),henv,hdbc);
STOP_IF_SQL_ERR(retcode);
retcode = SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &hstmt);
STOP_IF_SQL_ERR(retcode);
retcode = SQLExecDirect(hstmt,(SQLTCHAR*)szSQLStatement,SQL_NTS);
STOP_IF_SQL_ERR(retcode);
retcode = SQLBindCol(hstmt,3,SQL_C_TCHAR,chBuffer,sizeof(chBuffer),&iDataLen);
STOP_IF_SQL_ERR(retcode);
while (retcode == SQL_SUCCESS)
retcode = SQLFetch(hstmt);
if (retcode == SQL_NO_DATA)
retcode = SQL_SUCCESS;
break;
STOP_IF_SQL_ERR(retcode);
// retcode = SQLGetData(hstmt,3,SQL_C_TCHAR,chBuffer,sizeof(chBuffer),&iDataLen);
// STOP_IF_SQL_ERR(retcode);
++iFetchedRows;
stop_:
if (SQL_ERR(retcode))
MessageBox(null,_T("SQL statement execution error."),_T("Error"),MB_OK);
eqShowStatementError(SQL_HANDLE_STMT,hstmt,retcode);
} else {
_stprintf(szMsg,_T("SQL execution success. Fetched rows: %ld"),iFetchedRows);
MessageBox(null,szMsg,_T("Success"),MB_OK);
catch(...)
MessageBox(null,_T("Unknown exception in eqTestOracleLOBSelect"),_T("Unknown exception"),MB_OK);
if (hstmt != null)
SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
hstmt = null;
if (hdbc != nil)
SQLFreeHandle(SQL_HANDLE_DBC, hdbc);
hdbc = nil;
if (henv != nil)
SQLFreeHandle(SQL_HANDLE_ENV, henv);
henv = nil;
SQLRETURN eqOpenConnectionODBC(TCHAR *szDSN,
TCHAR *szUser,
TCHAR *szPassword,
SQLHENV &henv,
SQLHDBC &hdbc)
SQLRETURN retcode;
henv = nil;
hdbc = nil;
//Allocate environment handle
retcode = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv);
STOP_IF_SQL_ERR(retcode);
//Set the ODBC version environment attribute
retcode = SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
STOP_IF_SQL_ERR(retcode);
// Allocate connection handle
retcode = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc);
STOP_IF_SQL_ERR(retcode);
// Set login timeout to 5 seconds.
SQLSetConnectAttr(hdbc, SQL_LOGIN_TIMEOUT, (void*)5, 0);
STOP_IF_SQL_ERR(retcode);
retcode = SQLConnect(hdbc, (SQLTCHAR*)szDSN, SQL_NTS,
(SQLTCHAR*)szUser, SQL_NTS,
(SQLTCHAR*)szPassword, SQL_NTS);
stop_:
if (SQL_ERR(retcode))
MessageBox(null,_T("Connection Error."),_T("Error"),MB_OK);
if (hdbc != nil)
eqShowStatementError(SQL_HANDLE_DBC, hdbc,retcode);
SQLFreeHandle(SQL_HANDLE_DBC, hdbc);
hdbc = nil;
if (henv != nil)
eqShowStatementError(SQL_HANDLE_ENV, henv,retcode);
SQLFreeHandle(SQL_HANDLE_ENV, henv);
henv = nil;
} else MessageBox(null,_T("Connected."),_T("Success"),MB_OK);
return retcode;
void eqShowStatementError(SQLSMALLINT chHandleType, SQLHANDLE hHandle,long lErrOrig)
SQLRETURN nErr = SQL_SUCCESS;
int nRecNum = 1;
SQLTCHAR szSqlState[6];
SQLTCHAR szMsg[SQL_MAX_MESSAGE_LENGTH];
SQLSMALLINT nMsgLen;
SQLINTEGER nNativeError;
while ((nErr = SQLGetDiagRec(chHandleType,hHandle,nRecNum,
szSqlState, &nNativeError,
szMsg, sizeof(szMsg), &nMsgLen)) != SQL_NO_DATA)
szSqlState[5] = 0;
MessageBox(NULL,(const TCHAR *)szMsg,_T("ODBC Error"),MB_OK);
++nRecNum;Yes, the 9.2.0.2 driver can be downloaded from OTN. I don't believe it will solve your particular problem, but it will help in general. If you don't grab the latest version, you'll probably have to chack the "Force SQL_WCHAR Support" option in the DSN configuration.
From the help file
"The C data type, SQL_C_WCHAR, was added to the ODBC interface to allow applications to specify that an input parameter is encoded as Unicode or to request column data returned as Unicode. The macro SQL_C_TCHAR is useful for applications that need to be built as both Unicode and ANSI. The SQL_C_TCHAR macro compiles as SQL_C_WCHAR for Unicode applications and as SQL_C_CHAR for ANSI applications."
My first thought would be that your application is not being compiled as Unicode. If you substitute SQL_C_WCHAR for SQL_C_TCHAR when you're dealing with NCLOB columns, I suspect you'll have better luck.
More help file
"The SQL data types, SQL_WCHAR, SQL_WVARCHAR, and SQL_WLONGVARCHAR, were added to the ODBC interface to represent columns defined in a table as Unicode. These values are potentially returned from calls to SQLDescribeCol, SQLColAttribute, SQLColumns, and SQLProcedureColumns. In Oracle release 8.1.7.0.0 or 9.0.1.0.0, the Oracle database does not support encoding columns as Unicode. These values would not be returned from the ODBC Drivers for Oracle release 8.1.7.0.0 or for Oracle 9.0.1.0.0 databases.
In Oracle release 9.2.0.0.0, Unicode encoding was supported for SQL column types NCHAR, NVARCHAR2, and NCLOB. In addition, Unicode encoding was also supported for SQL column types CHAR and VARCHAR2 if the character semantics were specified in the column definition.
Starting with release 9.2.0.2.0, the ODBC Driver supports these SQL column types and maps NCHAR to the SQL data type SQL_WCHAR, NVARCHAR2 is mapped to SQL_WVARCHAR, and NCLOB is mapped to SQL_WLONGVARCHAR. The SQL CHAR column is mapped to SQL_WCHAR and the VARCHAR2 column is mapped to SQL_WVARCHAR if the character semantics are specified for the column. While the Force SQL_WCHAR Support option is still available in the 9.2.0.2.0 ODBC Driver, it is no longer required for Unicode support."
Justin
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