Read/write data to dvd?

Is there a library/package/anything I can use to read and write data to a dvd? Any help is appreciated.
-tom

this is such a bizarre question I'm baffled.
The only thing I can imagine you mean by this is that you have a DVD burner on your PC and you want to read/write to it.
Reading should just be a case of accessing it by the the drive letter as you would any other physical drive.
Writing...well unless you have some software that makes the OS think the DVD can be written to like any other drive (I have something like this for my CD burner which lets you drag and drop stuff to the drive etc). Again, this would just be a case of referencing the drive via its 'letter' (in Windows)
ios that what you mean?

Similar Messages

Urgent!!! Need help in file read/write data to a serial port

Hi,
I really need someone's help in order for me to complete my project. I have attached a vi which I have taken from an example and integrate to my project. In the vi, I have managed to get the encoder counts using Ni 9411. I need to read/write that data from ni9411 to ni9870 without using any serial port as they are connected to a NI 9104 chasis. May I know whether I am correct in writing the data to my ni9870 port using the vi I have attached? Does anyone know how i can convert the number of counts to a 8-bit data/byte so that I can send the data through the RS232 port? I really need someone's help as I need to finished in 2 weeks time.
I have also attached an vi on controlling the epos2 controller using instrument driver. Does anyone know how can i integrate this vi to the fpga vi (the one which I need to read/write data to 9870) as I need to send those data to control my epos2 controller.
Please help me!!!
Attachments:
Encoder Position & Velocity (FPGA).vi ‏23 KB
SINGLEMOTORMODIFIED.vi ‏17 KB

Afai,
As I allready suggested you here, call your local NI Office and ask for assistance!
You really need assistence in a higher level that we can provide via the forums. Otherwise I don't see a chance for you to finish your project in time.
1. Convert I32 to U8 to write it to the 9870 could be done like this:
2. The vi to control the epos2.
There is NO way ( absolutely NO way) to port this vi to FPGA. It's based on VISA calls, uses an event-structure, both are not available at the FPGA.
The only thing you could do is to analyze the VI, the instruction set and design an FPGA vi which handles the specific instructions you would need.
I have no experience with epos2 and I'm not 100% sure if this would work as you would like to use it. And doing this needs deep knowledge of LabVIEW, VISA, Instrument Drivers, the epos hardware, FPGA programming, and so on...
Christian

Is it possible to read/write data from Salesforce using web service hub in Informatica?

Anyone from Informatica can asnwer this question please

Is it possible to read/write data from Salesforce using web service hub in Informatica? Not asking about PowerExchange for Salesforce or Informatica Cloud. Just using web service can we load data into Salesforce? Thanks ahead.

Error 33172 occurred at Read & Write data transfer between two or more PF2010 controller

Hi,i need to do data transfer between two or more FP2010 controller.e.g. FP2010(A) & FP2010(B).
FP2010(A) need to transfer the measurement (from its I/O module) to FP2010(B) to do the data analysis.These data transfer should be synchronous btw two controller to prevent data lost.
From the vi used in the attachment,i encountered some problems at:
(1) Error 33172 occurred while publishing the data.Can i create and publish data under different item name?
(2) How to synchronies the read & write btw contorller?
All controller are communicating with each other directly without the need of a host computer to link them together
Is there any other method to do fast data transfer betwe
en controller?

Hi YongNei,
You were succesful in omiting enough information to make it very difficult to answer!
Please post your example.
Please tell us what version of LV-RT you are using.
Please define what you concider "fast data transfer".
Have you concidered mapping the FP tags of FP2010(A) to FP2010(B) and vise versa?
WHat exactly has to be syncronized?
If you have something that is close to working, share that.
Well, that as far as I can go with the info you have provided. Depending on the details, what you are asking could be anything from trivial to impossible with the currently available technology. I just can't say.
It would probably be a good idea to start over with a fresh question (sorry) because not many people are going to know what a a "
PF2010" is and I can not guarentee that I will be able to get back to you personally until next week-end.
Trying to help you get an answer,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

How can I read/write data files (text file) from PL/SQL Script

I had an oracle forms pl/sql program to read/write a data file (text file). When this code is run on a command line as a PL/SQL script using the SQL*Plus I am getting an error:
-- sample.sql
DECLARE
vLocation                VARCHAR2(50) := 'r:\';
vFilename                VARCHAR2(100) := 'sample.dat';
vTio                   TEXT_IO.FILE_TYPE;
vLinebuf               VARCHAR2(2000);
vRownum               NUMBER        := 0;
-- use array to store data FROM each line of the text file
TYPE           array_type IS VARRAY(15) OF VARCHAR2(100);
vColumn      array_type := array_type('');
PROCEDURE prc_open_file(p_filename IN VARCHAR, p_access IN VARCHAR2) is
BEGIN
    vTio := TEXT_IO.FOPEN(vLocation||p_filename,p_access);
EXCEPTION
    WHEN OTHERS then
      -- raise_application_error(-20000,'Unable to open '||p_filename);
      message(sqlerrm);pause;
END;
PROCEDURE prc_close_file is
BEGIN
    IF TEXT_IO.IS_OPEN(vTio) then
       TEXT_IO.FCLOSE(vTio);
    END IF;
END;
BEGIN
--extend AND initialize the array to 4 columns
vColumn.EXTEND(4,1);
prc_open_file(vFilename,'r');
LOOP
      LTEXT_IO.GET_LINE(vTio,vLinebuf);
      vColumn(1) := SUBSTR(vLineBuf, 1, 3);
      vColumn(2) := SUBSTR(vLineBuf, 5, 8);
      vColumn(3) := SUBSTR(vLineBuf,10,14);
      Insert Into MySampleTable
      Values
        (vColumn(1), vColumn(2), vColumn(3));
      EXIT WHEN vLinebuf IS NULL;
   END LOOP;
   prc_close_file;
END;
SQL> @c:\myworkspace\sql\scripts\sample.sql;
PLS-00201: identifier 'TEXT_IO.FILE_TYPE' must be declaredIt works on the oracle forms but not on the SQL*Plus. Is there an alternative method using a PL/SQL script? A simple sample would help. Thanks.

Did you ever noticed the search box at the right side of the forum?
A quick search (limited to this years entries) brought up this thread for example
Re: UTL_FILE Examples

Read Write Data into a MS Word document

The requirement I am fullfilling directly specifies the need to write data into a Microsoft Word Document and if Necessary, Read Back data from a Microsoft Word Document. The data will be simple text but as time goes on I anticipate the systems engineers may expand the requirement. I want to cross one bridge at a time so I am just concentrating on the text issue. I must do it from within a stand-alone application. Not through a server, not through ASP, not through a browser, just a stand alone application. It appears from my own investigation of the JAVA API that this is not possible. Regrettably, I am only a day or so away from switching to C# or VB to get this job done. My first question is
1. Can Java Do this?
2. If not, does Sun Microsystems have any plans to add this capabiliy?
3. Can we make recommendations to Sun to add this capability to JAVA?

1. Can Java Do this?Java can do anything but there is no built-in ability to do just that.
2. If not, does Sun Microsystems have any plans to add
this capabiliy?
3. Can we make recommendations to Sun to add this
capability to JAVA?Very doubtful! MS Office document formats are not completely open to the public - and they are weird! Supporting this capability would probably require an agreement with Microsoft and it would mean you had to change the API for every time Microsoft chooses to change the document formats.
But there are some open source tools that claim to be rather good at reading and writing MS Office files. Take a look at this one:
http://jakarta.apache.org/poi/index.html

How to read/write data in Notepad?

Hi to all,
Im creating a simple application to write data in notepad using wireless toolkit 2.5. For that i have created a notepad file(raj.txt) manually and saved in the location "D:\WTK25\appdb\DefaultColorPhone\filesystem\root1\raja.txt". When i run in the emulator..Its shows the following exception " java.io.IOException : Root is not accessible". I got struck in this thing. For your convenience i have attached my source code also. Please correct and explain me
1. Where should i store the notepad file in Wireless Toolkit 2.5?
2. If i use wireless toolkit 2.5, What is the link should i give in the method Connector.open("file:///???")?
My source code:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.*;
import javax.microedition.io.*;
public class FileConnection extends MIDlet implements CommandListener
private Display display;
private Form form;
Thread s=new Thread();
public FileConnection ()
display = Display.getDisplay(this);
form = new Form("Write To File");
form.setCommandListener(this);
public void startApp() throws MIDletStateChangeException
try
OutputConnection connection = (OutputConnection)
Connector.open("file://localhost/D:/WTK25/appdb/DefaultColorPhone/filesystem/root1/raj.txt", Connector.WRITE );
OutputStream out = connection.openOutputStream();
PrintStream output = new PrintStream( out );
output.println( "This is a test." );
out.close();
connection.close();
Alert alert = new Alert("Completed", "Data Written", null, null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.ERROR);
display.setCurrent(alert);
catch( ConnectionNotFoundException error )
Alert alert = new Alert("Error", "Cannot access file.", null, null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.ERROR);
display.setCurrent(alert);
catch( IOException error )
Alert alert = new Alert("Error", error.toString(), null, null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.ERROR);
display.setCurrent(alert);
public void pauseApp() {}
public void destroyApp(boolean unconditional) {}
public void commandAction(Command command, Displayable displayable) {}
}

Kindly read the below mentioned article links. You'll understand what is going wrong in your present implementation.
http://developers.sun.com/techtopics/mobility/apis/articles/fileconnection/
http://today.java.net/pub/a/today/2007/03/29/working-with-java-me-fileconnection-on-physical-devices.html
~Mohan

What's the best way to read/write data from a file (preferably a *.txt file)?

As in the title. l have revived a couple of old VIs to read and write three numbers and a 1D array of clusters to/from a *.txt file. The functionality is not very user friendly, and it would also be useful if one could open the text files (manually - not through LabVIEW) and still be able to see/understand what was there.
I was wondering if anyone would be able to come up with a more efficient and/or user friendly method (compatible with lv6.1)
James
Never say "Oops." Always say "Ah, interesting!"
Attachments:
Read Spec.vi ‏110 KB
Write Spec.vi ‏58 KB

My primary goal is to have something that works and is easy and comprehensive to operate. Generating a human-readable file is just a bonus but would be nice if it could be achieved.
I enclose pictures of the initial file dialog (for both loading and saving the data - referred to as Spec(s) from hence forth), and of the front panel screen seen when a) loading a spec and b) saving a spec. In the file dialog, you have to already know the exact string to input else you'll just be told the file doesn't exist (applies for both loading and saving). When saving a spec, you cannot see any files previously saved, nor even any previous specs saved within the file. This means that one can unwittingly overwrite specs without realising it.
I'm not sure if I've explained this very well, but the current functionality means that far too much can go wrong. Additionally, if you forget the file name, you'll have no way of knowing what it should be (the data files are stored on a 'locked' part of our network accessible only by Admin or through the LabVIEW executable
Never say "Oops." Always say "Ah, interesting!"
Attachments:
File Dialog.JPG ‏23 KB
Select The Required Test Spec.JPG ‏10 KB
Name of specification.JPG ‏6 KB

Tecra M10-17U does not write data on DVD disks

Good morning,
I have problem using my DVD recorder.
It doesn't burn, only give-me error.
I 've test with difrent programs and other operating system, and diferente disks.
Thank You.

Did you try to clean the laser lens?
You can do this carefully using a cotton wool tip and alcohol fluid.
But be very careful while doing this
In my case this helped. I had some problems writing the data on different disks and cleaning the lens was the key!

Does constructing Object streams read/write data on the underlying stream?

I was hoping to create a class that implemented externalizable and just have the read and write external methods handle all the specifics. My client is Java and the server is legacy but always creating the ObjectInputStream hangs no matter if I construct it before or after the ObjectOutputStream. See the following basic code where s is an open socket.
OutputStream os = s.getOutputStream();
InputStream is = s.getInputStream();
outStream = new ObjectOutputStream( os );
inStream = new ObjectInputStream( is );
The last line always hangs??
Thanks, S.D.

I just read this in a link to another section of the docs.
The single-argument ObjectInputStream constructor requires an InputStream. The constructor calls readStreamHeader to read and verifies the header and version written by the corresponding ObjectOutputStream.writeStreamHeader method. If a security manager is installed, this constructor checks for the "enableSubclassImplementation" SerializablePermission when invoked directly or indirectly by the constructor of a subclass which overrides the readFields and/or readUnshared methods.
Boooo, is there some way of disabling this?
Thanks, S.D.

Read/write data to iPhone

Hey I'm making a game where I want to store things such as settings and high scores to the iPhone then read them the next time the app starts up. Any good tutorials or ideas?

This is usually done with NSUserDefaults. See the example in "Allowing the User to Specify a Different Default Behavior" under Using NSUserDefaults in +User Defaults Programming Topics for Cocoa+.
Here's a tutorial that might be helpful: [http://icodeblog.com/2008/10/03/iphone-programming-tutorial-savingretrieving-d ata-using-nsuserdefaults>.
NSUserDefaults is also covered very nicely in Chapter 8 of Hillegass.
Hope that helps!
\- Ray

Does Intel iMac read/write the mini DVDs

I just want to know if the slot loading DVD/CD in the Intel iMacs handles the small 3 inch Discs? I don't want to insert the small disc and then find out that it can't handle them like the tray loading drives.
Thanks

VeloTypo wrote:
I just want to know if the slot loading DVD/CD in the Intel iMacs handles the small 3 inch Discs?
no !
http://support.apple.com/kb/ht2801
JGG

Read and write data from / to cube in CUSTOM_LOGIC BADI

Here are the details:
BPC displays a set of details - with 5 rows and 5 columns. There are 50 additional rows for the 5 columns which are blank to start with.
User changes a cell. BPC 10 only sends that cell which is changed by the user in CUSTOM_LOGIC and WRITE_BACK BADIs.
I need to get other 5 X 5 cells (other than 1 cell, which is changed and being passed in the BADIs) details to determine all the details and calculate the additional 50 rows. After calculating these values, i need to update the cube so that the BPC report refreshes with the data i have updated.
Whats the best way? What are the funtion modules involved in reading / writing? Are there any best practices to read / write data from cube.
Appreciate your help.

Hi Ravan,
Look at my sample write back badi here: http://scn.sap.com/message/14290977#14290977
At the end of the code I have values updated in ct_data. The contents of ct_data will be automatically written to the cube (you don't need to have special code to write data).
B.R. Vadim

Read/Write Jar files?

This is really a newbie question, but since there's a forum specifically for jar questions I figured it was better to start here and move it to the newbie section if y'all deem it appropriate.
I have written a desktop application using Java 1.4.1 class libraries and intend the application to run on multiple platforms including Mac OS X, Windows XP and Linux. The application works standalone (not yet jarred) on the machine it was developed on, but now it's time to begin figuring out the distribution method.
Right now, the application reads several files from a flat text-file database, allows the user to peruse and display the information in a variety of ways, and gives the user a method to add to the flat-file database as needed. The file is about a megabyte and is excerpted into memory at initialization, then not referred to again unless the user writes additional data. When the user generates new data, write traffic to the file is fairly light, maybe 2-3kbytes per session.
I searched the forums for the best way to handle read/write data files for distribution and so far I haven't found anything that seems relevant, but surely the question must have been asked and answered before - maybe I'm using the wrong keywords?
Anyway, I have three basic questions:
1) Can I both read and write a file that's enclosed in a jar file? Or are files read-only once "jarred"?
2) Assuming I can both read and write a file within my jar file, is reading and rewriting within the jar so inefficient as to make that a non-preferred approach?
3) How do other folks who have a local read/write datafile in a desktop application deal with distribution? Keep the read/write datafile within the jar? Make a copy of it outside the first time the application is run and always read/write the copy outside the jar? Or some other strategy?
Thanks for any suggestions you can give a newbie at the Java game.
Jon

Thanks, that was pretty much what I suspected.
I have several data files and configuration files for this project, so I was trying to make the distribution as clean as possible. At least some of the config information can be hidden in Preferences, but I was struggling with the data files. I'll include the data files in my jar, then unpack them to the user's directory when launched the first time and work with them thereafter in the user's directory.
Enjoy the Dukes!
Jon

Online read + write from/to ms sql server database

hi all,
we're using R 4.6C. Want to connect to MS Sql server database and read/write data from abap program.
what's the best (and fastest) way do to this ?
joerg

I know only DBCON (Database multiconnect): see the notes 178949 and 323151 for more details.
Message was edited by: max bianchi

Read/write data to dvd?

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