Open file in append mode

I am using JSR-75 for file IO. How can i open a file for writing in append mode?

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Similar Messages

Open file in append mode in JSP

Hi;
I am using the java.io.* import attribute in my jsp page and I can write to a txt file, bvut it overwrites on the older file. How do I append to the file, here is my code
import="java.io.*" %>
<%
File fileObject = new File("C:/db/data.txt");
fileObject.createNewFile();
FileOutputStream fileStream = new FileOutputStream(fileObject);
DataOutputStream dataStream = new DataOutputStream(fileStream);
dataStream.writeChars("Line one\n\r");
dataStream.writeChars("Line two\n\r");
dataStream.close();
out.print("The new file has been created <br>");
%>
</body>
Appreciate help!!! Thanks
lakshmi

Go and read the API for java.io
Use the alternate constructor, which takes a boolean parameter, saying whether to append to the file.
ie
new FileOutputStream(fileObject, true);
If you are writing a text file, you might consider using a FileWriter rather than a FileOutputStream.
Cheers,
evnafets

11GR2 2nodes CRSD ASM - Failed to open file in dirty mode

Hi...
we facing a problem with a two node 11gr2 cluster.
Independently first started node one ore node two. The node that has start first starts normal.
The second started node fail with error mess ......
vi .../emcrsp.log
2011-04-17 10:19:14.406: [ OCRASM][4090540208]ASM Error Stack : ORA-15077: could not locate ASM instance serving a required diskgroup
2011-04-17 10:19:14.408: [ OCRASM][4090540208]proprasmo: kgfoCheckMount returned [7]
2011-04-17 10:19:14.408: [ OCRASM][4090540208]proprasmo: The ASM instance is down
2011-04-17 10:19:14.416: [ OCRRAW][4090540208]proprioo: Failed to open [+DGCONF]. Returned proprasmo() with [26]. Marking location as UNAVAILABLE.
2011-04-17 10:19:14.416: [ OCRRAW][4090540208]proprioo: No OCR/OLR devices are usable
2011-04-17 10:19:14.416: [ OCRASM][4090540208]proprasmcl: asmhandle is NULL
2011-04-17 10:19:14.416: [ OCRRAW][4090540208]proprinit: Could not open raw device
2011-04-17 10:19:14.416: [ OCRASM][4090540208]proprasmcl: asmhandle is NULL
2011-04-17 10:19:14.416: [ default][4090540208]a_init:7!: Backend init unsuccessful : [26]
[ CLWAL][738463920]clsw_Initialize: OLR initlevel [30000]
2011-04-17 10:19:15.272: [ OCRASM][3128352944]proprasmo: Failed to open file in dirty mode
2011-04-17 10:19:15.272: [ OCRASM][3128352944]proprasmo: Error in open/create file in dg [DGCONF]
[ OCRASM][3128352944]SLOS : SLOS: cat=8, opn=kgfolclcpi1, dep=402, loc=kgfokge
The interlink is up and running.
We try to recreate the OCR and Voting from daily backup without any result
Does anyone has an idea ?
Thanks *T
Edited by: tbrinkmann on Apr 20, 2011 5:15 AM

Hi Paul,
yes the ASM is down.
That was confusing me. If I shutdown the other node the +ASM can start and clustering com´s up normal.
It looks like only one node can use voting or ocr....
The behavior looks like the interlink is down buts is not ;:-(
One node ( first com´s up) start normally and take all cluster resources ...scan .. the vips..
And second node show this error mess..
Thanks
*T

Open File in RGB mode

How to Open file in RGB mode in illustrator using Javascript

if you have CS6 or above you can executeMenuCommand
app.executeMenuCommand ('doc-color-rgb');
or
app.executeMenuCommand ('doc-color-cmyk');
this will switch the active documents colour mode

Creating a file in append mode

Hi All,
I have a requirement where in i need to create a flat file in append mode . The requirement is as follows :
- In a week , SAP sends certain number of IDOCs to XI . For the first IDOC that comes in ,XI has create a file and later for the rest of the IDOCs ,XI just has to append the file contents .
- During the End of the week , the target system picks this file for processing.
My file structure is as follows:
Header
seg1
seg2
seg2
seg3
seg3
seg1
seg2
seg2
seg3
seg3
Trailer.
So ,while creating a file in append mode , is there any way apart from creating one more interface to pick the finally created file , i can make sure that the file gets written in the above format without header and trailer getting repeated.
Regards
Vinay P.

Hi, Vinay
If you don't want to use a new interface, you can use a operating system command in your target communication channel..
The OS script must:
pick up only one header line and move it to a temporal file. For example, with UNIX command you can do that with
grep "criteria" file | head -1 > temporal_file
pick up each detail line and move it to the temporal file.
pick up only the last trailer line and move it to the temporal file
Rename temporal file to final flat file.
Regards,
Carme.

Open file in edit mode

I need to open a file in edit mode. In my web part on item click I need to do some action before hand (like create a folder and copy file, then open it in edit mode).
I came across the code segment below to set to a hyperlink's onClick() event
<a onfocus="OnLink(this)" href="/Shared Documents/myDoc.docx" onmousedown="return VerifyHref(this,event,'1','SharePoint.OpenDocuments','')" onclick="return DispEx(this,event,'TRUE','FALSE','FALSE', 'SharePoint.OpenDocuments.3','1', 'SharePoint.OpenDocuments', '','','','1','0','0','0x7fffffffffffffff')">Click</a>
But in my case, it would be nice if I can open in C# code behind, after the folder operations in my Visual web part.
SPfile's file.OpenBinary() give a byte[], but was unable to open file.
I am using a LinkButton for the user to click on. Any advise ?

Hi Ahamed,
I guess you need to undertake some action server side before you redirect the user. There are a number of different ways to do it ... maybe using a long running process with redirect at the end ... or some jQuery that calls a "handler" waits for a response
and then redirects the user.
For the code to duplicate or copy the file see here:
http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfile.aspx
if the existing code you have to open the document in edit mode works you should be able to reuse it.
Thanks Chris

Creating file in append mode

Hi All,
I have below problem, please let me know your views.
I have requirement to trigger huge data using proxy from ECC and create a single file out of it on file server. Since the data is huge, in order to avoid performance issues, I am planning to trigger multiple message from ECC to XI. Say after every 2000 records are processed, proxy message will be triggered to XI and the program will continue execution.
Now my problem is on the receiver side I need a single file to be created out of all the messages triggered from ECC during a single run. This i think can be done using File adapter in "Append" mode.
However the problem is, data will contain 1 Header record and multiple Item records. In append mode the Header record will be appended multiple times in the file which is not desirable.
Is there any way to avoid this?
Is there any other approach that is feasible in this case where in I need to extract large data from ECC using proxy program and write it to a single file?
Thanks for your help.
Anand

Hi Anand,
I also faced this requirement and solved successfullyby using CREATEIF node function. Please follow below approach...
So your proxy will send several files which you need to create as single file at receiver side. First file only has to create with header. So for this The proxy data which is coming first time should have header data, now compare in mapping whether header data coming in sender proxy data or not. If Header data coming then by using CREATEIF node function, create the target header structure in mapping(target header structure should have 0..1 occurance). If header data is not coming in sender proxy(this is not first proxy execution as it is not having header data) CREATEIF node function doesnt create the target header structure.
In receiver file adapter select append mode so that first time file will create with header as CREATEIF node function create the target structure and for the next executions of proxy it will create only data records.
thanks,
madhu

File in appending mode

hi all
when i try to write to a file i just have the last line added and the pervoiuse ones are overwritten
how can i keep everything added to the file appear??
what is the appending mode for the file to keep accumelating things rather than overwrite them??

ok here you are
     PrintWriter outT=
                    new PrintWriter(
                      new BufferedWriter(
                              new OutputStreamWriter(
                                      new FileOutputStream("D:/eng.txt"),
                                      enc)) );
           outT.close();
//These   appending mode
           outT = new PrintWriter(
                      new BufferedWriter(
                              new OutputStreamWriter(
                                      new FileOutputStream("D:/eng.txt",true),
                                      enc)) );maybe the problem is with the menu?? cos each time i use getSelectedText() and then i add the selected text to the file and after another select also i want to keep it in the same file
so select add then select add and so on but each time i just have the last choosen text
what is your suggestion now????

Receiver File adapter Append Mode

Hi
I have scenario where i am sending multiple idocs to file ...when i putting the file construction mode to append i can put multiple idoc in to file but i wanna do it on daily basis Means i wanna send the newly crated or changed Idoc on a daily basis to a single file ..
How can i achieve that
SV

Hi
You can achieve this using dynamic file names.
Every day different files
FileName-<DD>-<MMM>
chk these
/people/michal.krawczyk2/blog/2005/11/10/xi-the-same-filename-from-a-sender-to-a-receiver-file-adapter--sp14
/people/sameer.shadab/blog/2005/09/23/an-interesting-usage-of-variable-substitution-in-xi
/people/sravya.talanki2/blog/2005/08/11/solution-to-the-problem-encountered-using-variable-substitution-with-xi-sp12
rgds
Arun

Can I open file in shared mode so that multiple users can write at same tim

Hi,
I want to write to a trace file from a user exit and BADI. But I want to create only one trace file in which multiple users can simultaneously append. Is it possible to do this? How? Code could really help as this is urgent.
Thanks for reading.

Hi,
I think we can use the locks shared or exclusive locks concept here
you can find examples in this section on how to implement them -
http://help.sap.com/saphelp_47x200/helpdata/en/41/7af4c5a79e11d1950f0000e82de14a/frameset.htm
There are two types of lock in the R/3 System:
Shared lock
Shared locks (or read locks) allow you to prevent data from being changed while you are reading it. They prevent other programs from setting an exclusive lock (write lock) to change the object. It does not, however, prevent other programs from setting further read locks.
Exclusive lock
Exclusive locks (or write locks) allow you to prevent data from being changed while you are changing it yourself. An exclusive lock, as its name suggests, locks an application object for exclusive use by the program that sets it. No other program can then set either a shared lock or an exclusive lock for the same application object.
Regards
Chandralekha
Regards
Chandralekha

Corrupt file error while writting a file in compress mode

Hello,
I have a scenario where i am writting data in a file in appending mode with filter 'compress' addition using open dataset, on Al11 for the first set of records it works fine but if this file is accessed again for writting data in next select statement ( its between select endselect),the file is getting corrupted, if i try to open this file corrupt file error come. can someone help.
Thanks and Regards,
Gunjan

Hi Gunjan,
Unfortunately, you can't do in that way. The behaviour of that OPEN and FILTER 'compress' clause is to create a compacted file, to be read later, but it can be appended... all your writes go to a pipe and when you close the file this is sent to 'compress' program or other filter and than a compacted file is created.
You can't go back and start inserting again after close it.
Follow documentation:
http://help.sap.com/abapdocu_70/en/ABAPOPEN_DATASET_OS_ADDITION.htm
The addition FILTER must not be used together with the addition AT POSITION or for the access type FOR UPDATE.
Regards, Fernando Da Ró

File Adapter Append issue

Hi Iam trying to write a write a file in append mode using a file adapter(on a file which already exits)...but it says...file already exists...What might be the issue...?
Thanks in advance!
Larry

Hi Guys,
I shall explain the issue Iam having...Iam using the File Content Parameters..and the output is a plaint text file(Flat File).We are using Dynamic file configuration to populate the file name as per our requirements.When I dont use the dynamic config...(giving the name in the communication channel) the file is created @ the first time and its getting appended the next time..But when I use the Dynamic Configuration the file is not getting appended and it leaves an error saying the file is already there and cannot be overwritten...
Please advise!
Thanks in advance!

Open Dataset in Append -- Error: No such file or directory

Good day Everyone
I am opening 3 files in append:
1 )/usr/sap/SAPBP/interface/XIU/batch/CUSTUPDT72_061011123801680.E3.SUCCESS
2) /usr/sap/SAPBP/interface/XIU/batch/CUSTUPDT72_061011123801680.SUCCESS
3) /usr/sap/SAPBP/interface/XIU/batch/CUSTUPDT72_061011123801680.E3.SUCCESS
OPEN DATASET IV_FILENAME FOR APPENDING IN TEXT MODE ENCODING DEFAULT MESSAGE LV_MSG.
When i do this, 1 one the files is created and the other 2 return message: No such file or directory.
Since 1 of the files is being created, the directory cannot be invalid.
Can anyone please provide me with sugestions on how i can get the other 2 open as well.
Sincerely,
Marc

Hi Marc!
Did you create your iv_filename as char70? Because then name 2) would fit and names 1,3) would be too long...
As long as your coding is identical, here nothing further should go wrong.
Also your names look quite OK, you wouldn't have a typo in the other names?
Still an authority problem on OS-level can happen, but that's quite unlikely for files of same type.
Regards,
Christian

Report Generation tool kit for MS office (Opening an existing excel file and appending to the bottom)

I don't have any problems creating and filling an excel sheet with data. I use the New Report.vi, Easy Title.vi, and Easy Text.vi to create the file. I then save and dispose properly.
What I don't seem to be able to do is open the exsting file and append data to the end of the sheet.
Thanks in advance for your help.
todd

Hi Todd,
You can do this by creating a new Excel report with the existing excel file path wired to the "template" input. Then use "Excel Get Last Row.vi" (located under Report Generation\Excel Specific\Excel General) to obtain the location of the last row. Then use that location to input new data into the file.
Hope this helps,
Dan

Opening a file with FILE_SHARE_DELETE mode (Only on Windows)

Hi,
We have an application that imports logs from several 3rd party vendor's applications. Basically what we do is import the logs in real time, i.e we do have a live FileInputstream connection to the log file. Now, when the 3rd party applications that rotate these logs (many of them do when they grow big or scheduled periodically), all unix flavors dont see to have any problem, while the windows does complain that the device or resource is busy and the original application is not allowed to rotate it. When i dug into the native code of windows jvm, i found that the file is not opened in the FILE_SHARE_DELETE mode and only with FILE_SHARE_READ and FILE_SHARE_WRITE modes. When we wrote a separate C++ application the opens a file with FILE_SHARE_DELETE mode, we found that the logs are rotatable.
Now, how can we instruct the JVM to open a file with FILE_SHARE_DELETE mode? Is there any such implementation already or do i have to come up with another class extending the FileInputStream and use a totally different open method where the file is opened with this mode in the native code?
Thanks
Manava

Hello,
I think you can write :
Runtime.getRuntime().exec("start.exe " + MyFileDialog.getDirectory() + MyFileDialog.getFile());
So, "start.exe" choose the application (not valid for NT machine), ".getDirectory()" return the PATH and ".getFile()" return the NAME.
Best regards from France
Thierry

Open file in append mode

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