Java mapping for fixed length file in XI

Can Anyone help me On this?

Hi,
This may Help you
Check these for JAVA Mapping
Java Mapping (Part I)
Java Mapping (Part II)
Java Mapping (Part III)
Testing and debugging
Testing and Debugging Java Mapping in Developer Studio
Implermenting JAVA Mapping in PI
Implementing a Java Mapping in SAP PI
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/10dd67dd-a42b-2a10-2785-91c40ee56c0b
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/400ee77e-f9d6-2a10-2b8c-99281a4dcf6b
REgards
Seshagiri

Similar Messages

Gui_download issue - trailing spaces getting truncated for fixed length fil

Hi All,
I have a requirement where I need to download an internal table as a fixed length file.
The code is as follows:
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
BIN_FILESIZE =
FILENAME = L_FILE
FILETYPE = 'ASC'
APPEND = 'X'
WRITE_FIELD_SEPARATOR = ' '
HEADER = '00'
TRUNC_TRAILING_BLANKS = ' '
WRITE_LF = ' '
COL_SELECT = ' '
COL_SELECT_MASK = ' '
DAT_MODE = ' '
IMPORTING
FILELENGTH =
TABLES
DATA_TAB = IT_TEXT
EXCEPTIONS
FILE_WRITE_ERROR = 1
NO_BATCH = 2
GUI_REFUSE_FILETRANSFER = 3
INVALID_TYPE = 4
NO_AUTHORITY = 5
UNKNOWN_ERROR = 6
HEADER_NOT_ALLOWED = 7
Each row in the internal table IT_TEXT is 242 chars long.
The FM is truncatinf the trailing blanks on the file. How do I get the FM to not truncate the trailing blanks in each row?
My internal table has multiple rows and the number of rows on the table should be same as the number of rows on the downloaded file.
I tried setting the WRITE_LF parameter to space.
In this case, the trailing spaces are not truncated(which is as per my requirement), BUT all the rows in the internal table appear in a single line on the downloaded file instead of multiple rows.
I also tried setting the TRUNC_TRAILING_BLANKS field to space but that does not work either. Spaces at the end of the row are still truncated.
so the requirement is: the spaces at the end of each row should not be truncated and
each row on the internal table should have a corresponding row on the downloaded file.
(it is a fixed length file)
I also tried using the following code
class cl_abap_char_utilities definition load.
DATA: BEGIN OF IT_TEXT OCCURS 0,
       TEXT(242) TYPE C,
       cr_lf TYPE c VALUE cl_abap_char_utilities=>cr_lf,
      END OF IT_TEXT.
when i compile, i get the following error
The type "CL_ABAP_CHAR_UTILITIES" is unknown.
Im using R/3 4.6C. Could this be a problem?
Please suggest a solution for this problem.
Thanks!
Sandeep
Edited by: sandeep reddy on Jul 25, 2008 7:16 PM

Hi,
Try this..This worked..Add a dummy character at the end of the internal table...Then pass trunc_trailing_blanks   = ' '...
PARAMETERS: p_file TYPE rlgrap-filename
            DEFAULT 'c:\test_download.txt'.
DATA: BEGIN OF s_data,
        data TYPE char10,
        dummy,      " Added this.
      END OF s_data.
DATA: t_data LIKE TABLE OF s_data.
s_data-data = 'Test'.
APPEND s_data TO t_data.
s_data-data = 'Test2'.
APPEND s_data TO t_data.
s_data-data = 'Test3'.
APPEND s_data TO t_data.
s_data-data = 'Test4'.
APPEND s_data TO t_data.
* Download.
DATA: v_file TYPE string.
v_file = p_file.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
    filename                = v_file
    trunc_trailing_blanks   = ' '
TABLES
    data_tab                = t_data
EXCEPTIONS
    file_write_error        = 1
    no_batch                = 2
    gui_refuse_filetransfer = 3
    invalid_type            = 4
    no_authority            = 5
    unknown_error           = 6
    header_not_allowed      = 7
    separator_not_allowed   = 8
    filesize_not_allowed    = 9
    header_too_long         = 10
    dp_error_create         = 11
    dp_error_send           = 12
    dp_error_write          = 13
    unknown_dp_error        = 14
    access_denied           = 15
    dp_out_of_memory        = 16
    disk_full               = 17
    dp_timeout              = 18
    file_not_found          = 19
    dataprovider_exception = 20
    control_flush_error     = 21
    OTHERS                  = 22.
Thanks
Naren

Content conversion parameters necessary for fixed length file

Hi,
I new to xi.The scenario is that i have to handle a fixed length file where the records repeat after every 80 characters.Can anyone help me as to how thw identify the start of every record based on length
thanks and regards ,
srinadh

Hi,
Hey i have a small doubt.My input is like this
99443 123213 232234 12312 127544 23423
Here i have four recorsetnames namely HEADER1,HEADER2,HEADER3,HEADER4,HEADER5,HEADER6 all the recordsets are of same size but the lengths of the fields in it vary so i specified the following parameters
HEADER1.fieldFixedLengths=1,3,1
HEADER1.fieldNames=value1,value2,value3
HEADER1.endseperator=" "
HEADER2.fieldFixedLengths=1,3,2
HEADER2.fieldNames=value1,value2,value3
HEADER2.endseperator=" "
MY OUPUT XML STRUCTURE SHOULD BE like this
<header1>
<value1>9<\value1>
<value2>944<\value2>
<value3>3<\value3>
<\header1>
<header2>
<value1>1<\value1>
<value2>232<\value2>
<value3>13<\value3>
<\header2>
Is the content conversion parameters i specified enough for that. I wanted to know how would it know the begin of the next recordset(ie the seperation between the two recordsets) .Please help me its vey urgent
Thanks in advance
Sriandh

Content conversion parameters for fixed length file

Hi,
Hey i have a small doubt.My input is like this
99443 123213 232234 12312 127544 23423
Here i have four recorsetnames namely HEADER1,HEADER2,HEADER3,HEADER4,HEADER5,HEADER6 all the recordsets are of same size but the lengths of the fields in it vary so i specified the following parameters
HEADER1.fieldFixedLengths=1,3,1
HEADER1.fieldNames=value1,value2,value3
HEADER1.endseperator=" "
HEADER2.fieldFixedLengths=1,3,2
HEADER2.fieldNames=value1,value2,value3
HEADER2.endseperator=" "
MY OUPUT XML STRUCTURE SHOULD BE like this
<header1>
<value1>9<\value1>
<value2>944<\value2>
<value3>3<\value3>
<\header1>
<header2>
<value1>1<\value1>
<value2>232<\value2>
<value3>13<\value3>
<\header2>
Is the content conversion parameters i specified enough for that. I wanted to know how would it know the begin of the next recordset(ie the seperation between the two recordsets) .Please help me its vey urgent
Thanks in advance
Sriandh

Are header 1 fields always going to occur first , then header 2 and so on?
By default file adapters do not support Nested Strcutures and so if the sequence is going to be the same and all of these have an occurence of 1..1 then things will work.
But if there is going to be an occurnece of * then you will need to use KeyFields.
Regards
Bhavesh

XSLT Mapping : XML to Fixed Length File

Hi,
I have to code a XSLT mapping which converts the XML into a Fixed Length File Format. I am getting the output but it has some garbage values (Some extra spaces in front of first record and also extra blank lines before the first record)
I am pasting my xsl sheet :
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
     <xsl:output method="text" indent="yes" media-type="text/plain"/>
     <xsl:template match="Employees">
          <xsl:for-each select="Employee">
               <xsl:value-of select="Name"/>
               <xsl:value-of select="ID"/>
               <xsl:value-of select="ADD"/>
               <xsl:text>
</xsl:text>
          </xsl:for-each>
     </xsl:template>
My input XML file is as follows:
<?xml version="1.0"?>
<p1:Test02 xmlns:p1="http://www.infosys.com/xi/training/hyd/66289">
        <Employees>
          <Employee>
             <Name>Anurag</Name>
             <ID>1121</ID>
             <ADD>Hyderabad</ADD>
         </Employee>
         <Employee>
             <Name>Divya</Name>
             <ID>1122</ID>
             <ADD>Hyderabad</ADD>
         </Employee>
         <Employee>
             <Name>Rasmi</Name>
             <ID>1123</ID>
             <ADD>Bangalore</ADD>
            </Employee>
     </Employees>
</p1:Test02>
And the output i am receiving is as follows:
    Anurag1121Hyderabad
Divya1122Hyderabad
Rasmi1123Bangalore
Please do help.....

hi,
>>>>
<xsl:output method="text" indent="yes" media-type="text/plain"/>
you allow the spaces by using indent="yes"
try with indent="no"
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions"><b>XI / PI FAQ - Frequently Asked Questions</b></a>

Configuring unicode charcterset for fixed length control file

Hi all,
we are setting our control file to support any language characters while data loading, we all set with our database configuration , need to configure our control file which is fixed length, we are using CHARACTERSET UTF8 and and also tried with CHARACTERSET AL32UTF16, its working fine for variable length control file but for fixed length the foriegn charecers like latin-I,greek, danish charactrers are taking more byte and affecting to next position data. and our data file is in UTF8 (not in regular ANSI formatt).
please advise
here is our control file example:
options (errors=999,SKIP=0)
Load DATA
CHARACTERSET UTF8
append
INTO TABLE TABLE_NAME
TRAILING NULLCOLS
field_name1 position(1:30) "trim(:fiels_name1)",
field_name2 position(247:306) "trim(:field_name2)",
)

I think you should move thread to: {forum:id=732}.

Java Mapping for Flat file

hello SDNers,
I am using JAVA mapping for converting FlatFlie IDoc to IDoc and i am using metadata for this.While downloading metadata from SAP system, the first segment in the data record is having level 2.
1) What is the use of Level in metadata?
2) What is the Level for first segment in data record of metadata. Is it Level 1 or Level 2?
3) I am facing an error while appending the node. Is it because of Level differs?
Plese help me out and thanks in advance

Hi,
>>>I am using JAVA mapping for converting FlatFlie IDoc to IDoc and i am using metadata for thi
why do you develop is from scratch is the code is already there - just copy and paste...
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/46759682-0401-0010-1791-bd1972bc0b8a
>>>1) What is the use of Level in metadata?
this shows how the nested segments in IDOC are to be understood
>>>3) I am facing an error while appending the node. Is it because of Level differs?
no, it becase your code is incorrect - the level velidation will be done at the receiver
Regards,
Michal Krawczyk

Reading a fixed length file

Hi All,
I am trying to read a fixed length file with .DAT extension through an FTP Adapter. I am using a read(polling) operation.
In the file there are three records(H,D,T). The length of all the three records is more than 100.When I am trying to build a schema for that file using native format builder, maximum position that i get is 100 and if i manually try to put the position beyond 100 say 120,while building the schema and then run the composite using the generated schema, the file is not polled from the location So if anyone could help me to clarify my doubts regarding reading of fixed length files.
a. Can i read i fixed length file which contains records whose position is more than 100.
b. If yes, then how do i do that?
Any help is appreciated.
Thanks in Advance.

Here's one way to start. Extend this class for the particular functionality you want:import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
/** Processes binary files which have embedded data records. */
public abstract class BinaryInputFile extends File
* Class constructor.
* @param fileName The input file name.
* @throws NullPointerException if the <code>pathname</code> parameter is <code>null</code>
protected BinaryInputFile(String fileName) throws NullPointerException
   super(fileName);
* Reads the file, one line at a time, passing each line to the subclass� process()
* function.
* @throws IOException if an error occurs.
public void process() throws IOException
   DataInputStream stream = new DataInputStream(new FileInputStream(this));
   process(stream);
* Process the file data.
* @param stream The input stream.
protected abstract void process(DataInputStream stream);
}

Fixed Length File attachment to Mail Receiver

Hi,
I have an interface requirement IDOC - PI - Fixed Length File attached to email.
Is it possible to do this? I need to pass the IDOC through a mapping and content conversion to build the fixed length file, I then need to attach this file to an email and send it to a user.
Any help would be greatly appreciated.
Thanks
Gareth

Hi,
I actually need to convert the IDOC to a different file format before sending it on. Eg.
<IDOC>
     <Segment 1...n>
           <username>User</username>
           <address>Address 1</Address>
     </Segment>
     <Segment>
           <username>User2</username>
           <address>Address 2</Address>
     </Segment>
<IDOC>
Converted to flat file with structure:
User......Address 1.....
User2....Address 2.....
The file needs to have fields of Fixed Length (thats what the .... after each field is to represent)
So I think the Data Type I am using for the file needs to go through Content Conversion to do this change, and then the file attached to an email.
I hope this makes sense.

Fixed length file to xml file

Hi,
Fixed length file to xml files.
i have to generate 2 xml files based on a field in the incoming file. structures of both xml files are same.
I want to know how many target data type ,target msg interfaces have to be created?
Thanks.

Ok got you. Best thing would be to use a simple OS command copy in your receiver communication channel. So do one mapping and generate one file and then use the OS command in receiver comm. channel after message processing then it should work for you.
Regards,
---Satish

Java Mapping for JDBC Interface

Hi,
please help on java mapping for my jdbc interface.
my java code for jdbc is:
Created on May 7, 2008
TODO To change the template for this generated file go to
Window - Preferences - Java - Code Style - Code Templates
package XiMappingDB2.com.xi.test;
@author miracle
TODO To change the template for this generated type comment go to
Window - Preferences - Java - Code Style - Code Templates
Created on May 2, 2008
To change the template for this generated file go to
Window>Preferences>Java>Code Generation>Code and Comments
package com.xi.test;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.sap.aii.mapping.api.AbstractTrace;
import com.sap.aii.mapping.api.MappingTrace;
import com.sap.aii.mapping.api.StreamTransformation;
import com.sap.aii.mapping.api.StreamTransformationConstants;
import com.sap.aii.mapping.api.StreamTransformationException;
@author kotla
To change the template for this generated type comment go to
Window>Preferences>Java>Code Generation>Code and Comments
public class NameMerge implements StreamTransformation {
     private Map param = null;
     private MappingTrace trace = null;
     public void setParameter(Map param){
     this.param = param;
     if (param == null) {
     this.param = new HashMap();
     public void execute(InputStream input, OutputStream output)
     throws StreamTransformationException {
     AbstractTrace trace = null;
     String RESULT = new String();
     trace =
     (AbstractTrace) param.get(
     StreamTransformationConstants.MAPPING_TRACE);
     try {
    //Create DOM parser
    DocumentBuilderFactory factory =
    DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
     //Parse input to create document tree
     Document doc = builder.parse(input);
                trace.addInfo(doc.toString());
      //          Map the elements
    Node root = doc.getFirstChild(); // gets the root element
     NodeList children = root.getChildNodes();
      for (int item = 0; item < children.getLength(); item++) {
      if (children.item(item) instanceof Element) {
      root = (Element) children.item(item);
      NodeList ch = root.getChildNodes();
      RESULT = RESULT.concat(ch.item(0).getNodeValue() + " ");
      trace.addInfo(RESULT); }
      catch (Exception e) {
           trace.addDebugMessage(e.getMessage());
   //Return the output document
   String document_exit = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><ns0:Person2 xmlns:ns0=\"urn:xxxxx.com:test:mapping:lookups\"><RESULT>"
   + RESULT
   + "</RESULT></ns0:Person2>";
     insertDB(RESULT);
   try
        output.write(document_exit.getBytes());
         catch (IOException e1) {
        trace.addDebugMessage(e1.getMessage());
public void insertDB(String DETAILS){
    Statement stmt = null;
    Connection conn = null;
    try {
      conn = getConnection();
      conn.setAutoCommit(false);
      stmt = conn.createStatement();
      stmt.execute("insert into KUMAR(DETAILS) values ('"DETAILS"')");
      //System.out.println ('"DETAILS"');
      conn.commit();
      stmt.close();
      conn.close();
    } catch (Exception e) {
      System.err.println("Error: " + e.getMessage());
      e.printStackTrace();
public Connection getConnection() throws Exception {
    String driver = "com.ibm.db2.jcc.DB2Driver";
    String url = "jdbc:db2://172.17.4.24:50000/SAMPLE";
    String username = "miracle";
    String password = "sairam";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
but we are getting the following error:Linkage error occurred when loading class JavaDatabaseApp/XiMappingDB2/com/xi/test/NameMerge (http://FILE2JDBC_US, 7d7b3141-f4d1-11dc-b25e-d5d5c0a80198, -1)
Start of test
LinkageError at JavaMapping.load(): Could not load class: JavaDatabaseApp/XiMappingDB2/com/xi/test/NameMerge
java.lang.NoClassDefFoundError: JavaDatabaseApp/XiMappingDB2/com/xi/test/NameMerge (wrong name: XiMappingDB2/com/xi/test/NameMerge) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:539) at java.lang.ClassLoader.defineClass(ClassLoader.java:448) at com.sap.aii.ibrep.server.mapping.ibrun.RepMappingLoader.findClass(RepMappingLoader.java:175) at java.lang.ClassLoader.loadClass(ClassLoader.java:289) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at com.sap.aii.ibrep.server.mapping.ibrun.RepJavaMapping.load(RepJavaMapping.java:136) at com.sap.aii.ibrep.server.mapping.ibrun.RepJavaMapping.execute(RepJavaMapping.java:50) at com.sap.aii.ibrep.server.mapping.ibrun.RepMappingHandler.run(RepMappingHandler.java:80) at com.sap.aii.ibrep.server.mapping.rt.MappingHandlerAdapter.run(MappingHandlerAdapter.java:107) at com.sap.aii.ibrep.server.mapping.ServerMapService.transformInterfaceMapping(ServerMapService.java:127) at com.sap.aii.ibrep.server.mapping.ServerMapService.transform(ServerMapService.java:104) at com.sap.aii.ibrep.sbeans.mapping.MapServiceBean.transform(MapServiceBean.java:40) at com.sap.aii.ibrep.sbeans.mapping.MapServiceRemoteObjectImpl0.transform(MapServiceRemoteObjectImpl0.java:167) at com.sap.aii.ibrep.sbeans.mapping.MapServiceRemoteObjectImpl0p4_Skel.dispatch(MapServiceRemoteObjectImpl0p4_Skel.java:104) at com.sap.engine.services.rmi_p4.DispatchImpl._runInternal(DispatchImpl.java:320) at com.sap.engine.services.rmi_p4.DispatchImpl._run(DispatchImpl.java:198) at com.sap.engine.services.rmi_p4.server.P4SessionProcessor.request(P4SessionProcessor.java:129) at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33) at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170).
please solve this issue.

Uday,
May be you have uploaded class file into external definitions.
You need to Zip the class file into .jar and then upload into external definitions of integration repository
Regards,
Kiran Bobbala

Java mapping for Remove and Add of DOCTYPE Tag

HI All,
i have one issue while the Java mapping for Remove and Add of DOCTYPE Tag in Operation Mapping .
it says that , while am testing in Configuration Test " Problem while determining receivers using interface mapping: Error while determining root tag of XML"
Receiver Determination...
error in SXMB MOni
" SAP:Category>XIServer</SAP:Category>
<SAP:Code area="RCVR_DETERMINATION">CX_RD_PLSRV</SAP:Code>
<SAP:P1>Problem while determining receivers using interface mapping: Error while determining root tag of XML: '<!--' or '<![CDATA[' expected</SAP:P1>
plz provide solutions
Thanks in advance.

Hi Mahesh,
I understand, you are using extended Receiver Determination using Operational Mapping (which has Java Mapping). And, there is an error message u201CError while determining root tag of XMLu201D, when you are doing configuration test.
Can you please test, the Operational Mapping (which has Java Mapping) separately in ESR, with payload which is coming now. It should produce a XML something like this [Link1|http://help.sap.com/saphelp_nwpi711/helpdata/en/48/ce53aea0d7154ee10000000a421937/frameset.htm]
<Receivers>
<Receiver>
<Party agency="016" scheme="DUNS">123456789</Party>
<Service>MyService</Service>
</Receiver>
<Receiver>
<Party agency="http://sap.com/xi/XI" scheme="XIParty"></Party>
<Service>ABC_200</Service>
</Receiver>
</Receivers>
If it is not (I Think it will not), then there is some problem in Java Mapping coding. Please correct it. Last option, if your Java code is small in length; you may paste it here, so that we can have a look at the cause of issue.
Regards,
Raghu_Vamsee

External tables-Fixed length file

Hi All,
I have a fixed length file that i load daily using an External table. Recently, one of the field, IP length was changed and customer wants to send both old records with 8 byte length and new records with 11 byte length in the same data file, until complete migration takes place.
Will it be possible for External tables to handle this requirement?. Or Is there any other possibility to treat it.
The old file contains 104 fields with IP field position form 490 to 498. Total
The new file contains 104 fields with the IP position from 490 to 501.
Thanks,
Sri.

If the two record types are mixed in the same file, then you will have problems loading them. I can see two possible solutions, in no particular order of preference (using your example data):
1. Redefine the external table something like:
Position (record_type (1:1)
version (2:5)
data (6:41))then parse the remaining fields based on the version number when you select from the external table.
2. Create two external tables over the same file, one for version 1.00 and one for version 1.01 using the LOAD WHEN clause to determine which set of data to load when you select. Something like:
CREATE TABLE version1 ...
ORGANIZATION EXTERNAL ...
ACCESS PARAMETERS
(RECORDS DELIMITED BY newline
LOAD WHEN (version = 1.00)
< definition for the old format >
and
CREATE TABLE version101 ...
ORGANIZATION EXTERNAL ...
ACCESS PARAMETERS
(RECORDS DELIMITED BY newline
LOAD WHEN (version = 1.01)
< definition for the new format >Then yor processing would use something like:
SELECT ip, last_name
FROM version1
UNION ALL
SELECT ip, last_name
FROM version101HTH
John

Reading fixed length file with different record types

Hi,
I need to read a fixed-length file with different record types, but the record identifier is in 31st position and not in 1st position.
But if I give 31 as position in File adpater wizard, BPEL takes whole 1-31 as identifier.
How we need to read such files.
Thanks
Ravdeep

hi ,
u cannot use the default wzard for this
use some thing like this nxsd:lookAhead="30" nxsd:lookFor="S"have a look at the below link it has some examples
http://download.oracle.com/docs/cd/B31017_01/integrate.1013/b28994/nfb.htm

How to handle a fixed length file without newline?

Hi Experts,
I'd like to handle a fixed length file without newline by sender file adapter.
A file like following.
It contains three recores."AAXBBBXCCCCX" is one record.
AA1BBB1CCCC1AA2BBB2CCCC2AA3BBB3CCCC3
I tried that following two parameters set. But only first recored was read.
fieldFixedLengths
fieldFixedLengthType
Please tell me how to handle.
Thanks
Shinya Kawagoe.

For this case we wrote a simple Adapter Module inserting an end of line character after an offset.
This way it can be reused in many interfaces.
And reading the whole file may not be an option in case of large source files. May cause performance / memory issues.
eolbean.offset = <recordLlen>
XMLPayload xmlpayload = msg.getDocument();
byte[] content = xmlpayload.getContent();
byte crlf = 0x0A;
int current = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int lines = content.length / recordLen;
do
     lines--;
     baos.write(content, current, recordLen);
     if (lines > 0) // if other lines, eol required
          baos.write(crlf);
          current += recordLen;
} while (lines > 0);
xmlpayload.setContent(baos.toByteArray());
baos.close();
Audit.addAuditLogEntry(key, AuditLogStatus.SUCCESS,     MODULE + " Done EOLing.");

Java mapping for fixed length file in XI

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