Application server file downloading

Hi Experts,
I have very urgent requiremnts for this :
1. The data extract needs to be downloaded on SAP application server ( take whatever path accessible to you).
2. Thereafter for every run, it should check if the file available in the same path and if yes then append data to this file instead of creating new one.
3. If file is not available then create new file.
please suggest me, how to do this.
it's very urgent
Regards
Mohit

hi,
use following logic
Compile the file path
CONCATENATE text-t10 sy-datum c_txt INTO v_fname_out.
Open the filepath on the application server for writing
OPEN DATASET v_fname_out FOR OUTPUT IN TEXT MODE ENCODING DEFAULT.
Check if the file could be opened
IF sy-subrc = 0.
Loop at the internal table and transfer the contents to the file specified at the path
    LOOP AT itab INTO wa.
      TRANSFER wa TO v_fname_out FOR APPENDING.
      CLEAR wa.
    ENDLOOP.
ENDIF.
Close the dataset
CLOSE DATASET v_fname_out.
regards,
srilatha

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Hi,
Use open dataset to read file from application server.
try like this sample code:
data : p_file like ibipparms-path.
data : rec(350) type c.
data: g_delimiter(1) type c value ','.
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Application Server : File writes only 255 characters

Hi Friends,
I am trying to writes data to application server file .
My line size is 1100 charqacters.
When I use open dataset for output in text mode encoding default
and transfer contents to file.
I am only able to write contents upto 255 characters.
Whatever is beyond that I do not see it in AL11.
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I tried CG3Y to view files but it also shows only 255 characters.
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Hi,
Just find the string length.
In 4.6C version there is a limit of 1500 characters i. e. U can transfer max of 1500 characters in a single transfer. For that we applied below solution. Check this it may help u.
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If problem is still there then paste ur code of OPEN DATASET, TRANSFER statements.
Try to open the file in TEXT MODE.
eg: OPEN DATASET l_file IN TEXT MODE.
Thanks,
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Application server file formats.

Hi,
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Hi,
A text file is a kind of computer file that is structured as a sequence of lines.
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Hello,
There are some erroneous row-lines in application server file. Some part of data is repeating on a single line. I could not able to figure out if this is new record or part of same line. I have checked the code. Internal table is correctly written on application server using TRANSFER statement.
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7411NC00101 GASNW 49223004 ESSENT NETWERK NOORD (GAS) GASNW 49223004 ESSENT NETWERK NOORD (GAS) 871694840014102760
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7411NC00101 GASNW 49223004 ESSENT NETWERK NOORD (GAS) 871694840014102760
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I have written the code for application server file path validation.
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PARAMETER_2                   = ' '
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Praveen,
I have checked ur code and I found that if i give a logical file name from
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DATA : l_filpath TYPE filename-fileintern,
l_filname(40) TYPE c.
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with_file_extension = 'X'
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Application Server file to internal table

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Kit

Hi,
Open Dataset is used to read or write on to application server ... other than that i am not sure that there exists any way to do the same ... here is a short description for that
FILE HANDLING IN SAP
Introduction
Files on application server are sequential files.
Files on presentation server / workstation are local files.
A sequential file is also called a dataset.
Handling of Sequential file
Three steps are involved in sequential file handling
OPEN
PROCESS
CLOSE
Here processing of file can be READING a file or WRITING on to a file.
OPEN FILE
Before data can be processed, a file needs to be opened.
After processing file is closed.
Syntax:
OPEN DATASET <file name> FOR {OUTPUT/INPUT/APPENDING}
IN {TEXT/BINARY} MODE
This statement returns SY_SUBRC as 0 for successful opening of file or 8, if unsuccessful.
OUTPUT: Opens the file for writing. If the dataset already exists, this will place the cursor at the start of the dataset, the old contents get deleted at the end of the program or when the CLOSE DATASET is encountered.
INPUT: Opens a file for READ and places the cursor at the beginning of the file.
FOR APPENDING: Opens the file for writing and places the cursor at the end of file. If the file does not exist, it is generated.
BINARY MODE: The READ or TRANSFER will be character wise. Each time n characters are READ or transferred. The next READ or TRANSFER will start from the next character position and not on the next line.
IN TEXT MODE: The READ or TRANSFER will start at the beginning of a new line each time. If for READ, the destination is shorter than the source, it gets truncated. If destination is longer, then it is padded with spaces.
Defaults: If nothing is mentioned, then defaults are FOR INPUT and in BINARY MODE.
PROCESS FILE:
Processing a file involves READing the file or Writing on to file TRANSFER.
TRANSFER Statement
Syntax:
TRANSFER <field> TO <file name>.
<Field> can also be a field string / work area / DDIC structure.
Each transfer statement writes a statement to the dataset. In binary mode, it writes the length of the field to the dataset. In text mode, it writes one line to the dataset.
If the file is not already open, TRANSFER tries to OPEN file FOR OUTPUT (IN BINARY MODE) or using the last OPEN DATASET statement for this file.
IF FILE HANDLING, TRANSFER IS THE ONLY STATEMENT WHICH DOES NOT RETURN SY-SUBRC
READ Statement
Syntax:
READ DATASET <file name> INTO <field>.
<Field> can also be a field string / work area / DDIC structure.
Each READ will get one record from the dataset. In binary mode it reads the length of the field and in text mode it reads each line.
CLOSE FILE:
The program will close all sequential files, which are open at the end of the program. However, it is a good programming practice to explicitly close all the datasets that were opened.
Syntax:
CLOSE DATASET <file name>.
SY-SUBRC will be set to 0 or 8 depending on whether the CLOSE is successful or not.
DELETE FILE:
A dataset can be deleted.
Syntax:
DELETE DATASET <file name>.
SY-SUBRC will be set to 0 or 8 depending on whether the DELETE is successful or not.
Pseudo logic for processing the sequential files:
For reading:
Open dataset for input in a particular mode.
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Read dataset into a field.
If READ is not successful.
Exit the loop.
Endif.
Do relevant processing for that record.
End the do loop.
Close the dataset.
For writing:
Open dataset for output / Appending in a particular mode.
Populate the field that is to be transferred.
TRANSFER the filed to a dataset.
Close the dataset.
chk a sampel
parameters: p_file like rlgrap-filename obligatory
default '/usr/sap/upload.xls'.
types: begin of t_data,
vbeln like vbap-vbeln,
posnr like vbap-posnr,
matnr like vbap-matnr,
werks like vbap-werks,
megne like vbap-zmeng,
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if sy-subrc ne 0.
write: / 'Cannot open for writing:', unixfile, w_msg.
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loop at it_file.
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close dataset unixfile.

Application Server file Validity

Hi Experts,
I have one query. I wanted to check the validity of file in application server. The scenerio is like in my selection screen I will provide application server file name.
I wanted to validate whether that file is existing or not. If file is not existing then I need to display an error message.
Can anybody will suggest me how I can achieve this requirement?
Thanks,
Neha

Hi Neha,
To access the files on Application server we use DATASET operationsd like open, read, close etc.
Now in your case use opendataset as:
open dataset   ds_name for output in text mode encoding default.
IF sy-subrc NE 0.
     //write your message here.
ENDIF.
CLOSE DATASET ds_name.
Where ds_name = logical path name of your file, or if you want to check for just one file, hard code the path.
Better practice is to use logical path name.
Also declare ds_name as
DATA: ds_name          LIKE rfpdo-rfbifile.
Close dataset is used in case file exists you need to close it.
Revert back if you wantto know abt logical file name.
Regards,
Sana.

Application server file downloading

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