Java lookup udf in graphical mapping

Hi experts,
I have java look up udf where it will look material number and display UOM but I dont want all UOM to get display. I want only one UOM to get display suppose if I have material 1 and UOM is EA and material 2 UOM is CR(as we are in milk business we use CR as UOM) I want to only CR if not IDOC should not get created. Below is the code which was already written
String TAG_IV_GTIN = "GTIN";
Hashtable hash = new Hashtable();
String[] rfcInputParameters = ;
String[] rfcInputValues = {inputParamValue1[0]};
Map inputParam = container.getTransformationParameters();
    for (int i = 0, n = rfcInputParameters.length; i < n; i++) {
      hash.put(rfcInputParameters<i>, new String(rfcInputValues<i>));
RFCLookup rfc = new RFCLookup();
List rfcResults = rfc.executeGMT(functionModule[0],hash, businessService[0],communicationChannel[0],resultXPathExpr[0],inputParam);
String rfcOutput = null;
Iterator iterator = rfcResults.iterator();
while (iterator.hasNext()) {
    Node resultNode = (Node) iterator.next();
    Node firstChild = resultNode.getFirstChild();
     if (firstChild == null) rfcOutput = null;
    else rfcOutput = firstChild.getNodeValue();
if (rfcOutput != null) {
     result.addValue(rfcOutput);
} else {
    // throw error if material lookup fails
    ExceptionThrower.fire("Error : Material " + inputParamValue1[0] + " does not exist in SAP.");
Can anyone please help me how I can look only particluar UOM and display that one only.

MappingLookupAPI is the answer to your question.
Refer
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/406642ea59c753e10000000a1550b0/frameset.htm
and the blog link specified by Vijaya for more details.
Regards,
Amol

Similar Messages

Handling PI 7.1 RFC Lookup Exception in Graphical Mapping

Dear Experts,
I would like to know the better way of handling PI 7.1 - RFC Lookup Exception in Graphical Mapping without using BPM. Say I perform a RFC Lookup from PI 7.1 Graphical Mapping and it fails due to RFC server down. In this case I suppose the RFC exception would be returned as response to the mapping? But, am really not sure how this response (RFC Exception) could be effectively used. Please clarify.
Thanks,
Hussain.
Edited by: HussainShaik on Oct 26, 2009 8:24 AM

Hi Hussain,
I am not sure if I understood you query completely.
IF the RFC look up raised some exception then how this is going to impact your interface will depend your mapping (which you did in ESR)
(the following is adopted from help.sap,com)
If you handled exceptions by selecting Use Exceptions checkbox in the function properties of the standard function, the mapping editor adds an additional parameter in red (the bottommost return parameter) to the standard function in the data-flow editor. If you do not assign a target field to this return parameter, ignore the RFC exceptions (the message mapping is not terminated at runtime). Otherwise the mapping runtime transfers the exception as an XML structure and it can then be evaluated in a user-defined function, for example. If there is no exception, the mapping runtime transfers an empty context.
If you have not selected the Use Exceptions checkbox, the mapping runtime terminates the message mapping if an exception occurs during the RFC lookup.
Is this you are looking here?
Also check this thread and help.sap site
Re: SAP-PI - RFC call to SAP backend system
http://help.sap.com/saphelp_nwpi71/helpdata/en/33/1ec6ced273493a993a80c2301c03da/content.htm
Regards
Suraj

Is is possibel to do an RFC Lookup from The Graphical Mapping?

Greetings,
While doing a message mapping I need to get the value from R3 system using an RFC, is it is possible ?

Hi
we can do by using rfc look ups
Lookup in mapping is the feature provided by SAP to lookup the data in the target R/3 or DB systems with the API provided.
You need to write UDF in order to implement the API's provided by SAP.Consider the below example
VendorNumber-UDF--CURR
The scenario is legacy to SAP. The legacy system doesn't provide the currency details. But the target field need's to be populated with currency value.
"The business rules says there are values maintained in SAP Table where if you pass VendorNumber it will return thr currency to you"
So what you can do? You can write UDF implementing SAP Provided API's and do a lookup in the SAP System and get back the currency value and populate them in CURR field.
I hope it clears a bit.
Please find the below blogs
DB Lookup: /people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
RFC Lookup:https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a03e7b02-eea4-2910-089f-8214c6d1b439
There are three types of look ups u can do
RFC look up
SOAP look up
JDBC look up
What is Lookup and why we need:
Within an XI mapping it is a common requirement to be able to perform data lookups on-the-fly. In particular, there may be a need to look up some data that is maintained in an R/3 application.
In the error handling topic we have seen the different validations which need to be performed on file. This can be done through Lookup.
Some use cases:
Look up material number from table MARA.
Look up cost center budget.
Look up employee information.
Look up unit-of-measure (UOM) information from table t006a.
Lookup for raising an alert.
The purpose of the lookup may be:
To perform application-level validation of the data, before sending it to the backend.
To populate fields of the XML document with some additional data found in the backend application.
This is a form of value transformation.
The "value mappings" offered by XI are not adequate in this case, since the data would have to be manually entered in the Integration Directory.
There are two ways in which we can do lookup:
Call lookup method from GUI mapping.
Call lookup method from XSLT mapping.
Lookup method from GUI mapping can be called using any of the following ways.
RFC lookup using JCO (without communication channel)
/people/sravya.talanki2/blog/2005/12/21/use-this-crazy-piece-for-any-rfc-mapping-lookups
RFC lookup with communication channel.
/people/alessandro.guarneri/blog/2006/03/27/sap-xi-lookup-api-the-killer
Lookup using JDBC adapter.
/people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
/people/sap.user72/blog/2005/12/06/optimizing-lookups-in-xi
CSV file lookup.
/people/sundararamaprasad.subbaraman/blog/2005/12/09/making-csv-file-lookup-possible-in-sap-xi
Lookups with XSLT - https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/8e7daa90-0201-0010-9499-cd347ffbbf72
/people/sravya.talanki2/blog
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/05a3d62e-0a01-0010-14bc-adc8efd4ee14
DB lookup - /people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
SOAP Lookup - /people/bhavesh.kantilal/blog/2006/11/20/webservice-calls-from-a-user-defined-function
You can refer to these links.
/people/alessandro.guarneri/blog/2006/03/27/sap-xi-lookup-api-the-killer Absolute stealer.
/people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
For Java APIs and also here you can map that how many types of lookups are possible in XI.
http://help.sap.com/javadocs/NW04/current/pi/com/sap/aii/mapping/lookup/package-summary.html

UDF or Graphical Mapping

Hello All
I have a requirement like below:
Source fields
TXT
AddTXT
Target Field
Node
I want to create Node as many times as AddTXT comes with value Concatinate(TXT+AddTXT). This I have achieved not a issue.
Now I want concatinate should happen only for 1st Node other nodes should contain only value of AddTXT.
e.g.
TXT = 001
AddTXT = James
AddTXT = Dheeraj
AddTXT = Rajesh
Result should be
Node = 001-James
Node = Dheeraj
Node = Rajesh
I believe using Graphical mapping this is not possible so how can I achieve this using UDF.
Thanks
Dheeraj Kumar

Hi Dheeraj
Please use the below code.
In the UDF
TXT = var1
AddTXT = var2
Regards
Osman

Lookup jdbc in graphical mapping

Hi,
i am struggling in testing lookup in User-Defined function. I have a good result of testing JCO using in User-Defined function, but when i executed in using JDBC, i got no error, however, no result turn on, just empty,
i am wondering if i use java.sql.* on imports line or not and wondering if url and driver should be used in User-Defined Function.
anyway, what i want to do, while mapping, i would like to get data from MSSQL DB in using User-Defined Function.
if you have a good solution instedad of this in order to do, please let me know
User-Defined Function
Description
Imports java.sql.*;
public String UOMLookupJDBC(String a,Container container){
//write your code here
String url = "jdbc:microsoft:sqlserver://10.100.100.1:1433;DatabaseName=TESTDB";
String user = "TESTUSER";
String pass = "TESTPASS";
Connection con = null;
Statement stmt = null;
ResultSet rset = null;
String driver = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
String expStr = "";
String sql = "";
try{
Class.forName( driver );
con = DriverManager.getConnection(url, user, pass );
stmt = con.createStatement();
sql = "SELECT CODE FROM Material03 WHERE MEINS = '"+ a +"'";
rset = stmt.executeQuery ( sql );
while(rset.next()){
expStr = rset.getString(1);
if(rset != null)
rset.close();
if(stmt != null )
stmt.close();
if(con != null )
con.close();
}catch(Exception e) {
e.getMessage();
e.printStackTrace();
return expStr;
Thanks
venjamin(YD)

MappingLookupAPI is the answer to your question.
Refer
http://help.sap.com/saphelp_nw2004s/helpdata/en/cf/406642ea59c753e10000000a1550b0/frameset.htm
and the blog link specified by Vijaya for more details.
Regards,
Amol

UDF for graphical mapping

Hi,
The following is my source structure :
Recordset 1..1 -> Idoc 1..unbounded -> Segment 1..1
<Recordset>
<Idoc>
<segment>abcdefgh</segment>
</Idoc>
<Idoc>
<segment>klmno</segment>
</Idoc>
</Recordset>
I have a requirement where in I have to pass the data from the various segments as an input to the RFC.Is there any UDF which I can use to concatenate the values from the different segments and map it to the input for the RFC.There can be many idocs under one Recordset and each idoc has one segment.
Appreciate if you could help.
Thanks in advance.
Induja

Hi,
Please use below TestUDF code
Here pass the input parameter as Segment ---> TestUDF ---> Target field
And select the cache parameter as queue
String temp = new String("");
for(int i = 0; i<a.length;i++)
temp = a<i> + temp;
result.addValue(temp);
Thanks
Swarup

XSLT using Java function from graphical mapping (RFClookup)

Hi,
I was wondering if it is possible to use the standard Java functions of the graphical mapping (RFCLookup, Datetrans, ...) or from my own UDF inside an xslt mapping. Does anyone have every tried this or is an example available ?
Regards Bernd

Hi Bernd,
here you can find an example how to use RFC lookup from an XSLT Mapping:
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/05a3d62e-0a01-0010-14bc-adc8efd4ee14?quicklink=index&overridelayout=true
Is this what you're looking for?
Regards,
Gábor

Use RFC Lookup in Graphical Mapping for Database Update

Hello,
I am wondering whether the RFC Lookup function in graphical mapping provides the same functionality as a general RFC function call.
In detail I would like to update a database table using a RFC which just takes some input parameters but does not use any output parameters. Would this work too as the name "lookup" implies that it might just be possible to read something?

HI,
Refer these links:
RFC Lookup by michal
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a03e7b02-eea4-2910-089f-8214c6d1b439
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/8e7daa90-0201-0010-9499-cd347ffbbf72
http://help.sap.com/saphelp_nw04/helpdata/en/cf/406642ea59c753e10000000a1550b0/content.htm
DB lookup - /people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
Regards,
Nithiyanandam

How to use Advance java function in graphical mapping in XI 2.0?

Hi,
currently I am using a simple java function to make an RFC call to R3 system.
I want to avoid making connection for each lookup. Instead I want to make a single connection for whole message queue and get the corresponding values in some array or container object.
please suggest a solution.
I think this is possible using Advance java function, but I am not able to find any example on using Advance java function at help.sap.com.
thaks in advance.

Hi!!!
I'm not sure if I understood you well.
Do you want to preload some data into your structures in the memory and keep them there so you don't need to make a new connection during processing the whole message or every message?
In my opinion you can cache some data during processing a message, but it's impossible to cache some data between processing messages.
If you write your java mapping or you use graphical mapping (even with user-defined function), then you have a java class. The problem is that XI 2.0 reloads this class during processing every message, so even if you load some data from your data source into your structures in the memory, this data will be lost after reloading your mapping class.
Regards,
Andrzej Filusz

UDF in message mapping instead of Java Mapping. Pls advice urgent

Hi All,
My scenario
CRM --- XI -- CRM
In XI I have to open socket connection.
Pls refer link:
/people/saravanakumar.kuppusamy2/blog/2005/12/15/socket-integration-with-xi
Can Java Mapping code given in above link for socket connection can be used in Message Mapping (CRM -- CRM)UDF?
Pls advice urgent
Regards

Hi Henry,
I understood your requirement.
But as per the architecture of XI/PI some message has to trigger your scenario.
In this case there is no adapter where you can directly communicate with CRM system.
Do one thing configure a dummy scenario on the sender side.
Use File adapter for simplicity. once it pools the file with some dummy data in the file it comes to Interface mapping(message mapping) of the PIPELINE steps. Now use the code as you mentioned above(within UDF) for opening socket to CRM system and implement you business logic within that program and write the response to target interface which will infact talk with CRM system.
Dont forget to do the coding in an infinite loop with some delay (if required). Other wise every time you have to put a message for File Adapter for triggering purposes.
You can also acheive the same if you use Java Mapping instead of Graphical mapping with UDF(code for Opening socket and business logic). I suggest you to use Java Mapping.
I dont know how you will comunicate with CRM system on receiver side.?
Thanks,
Gujjeti

Create Attachment within Graphical Mapping using UDF

Hi!
We want to create an attachment witihn a graphical mapping using an UDF function.
I use that function:
public String addAttachment(String filename, String mimeType, String content, Container container) throws StreamTransformationException{
     BASE64Decoder decoder=new BASE64Decoder();
     try {
          GlobalContainer globalContainer = container.getGlobalContainer();
          OutputAttachments outputAttachments = globalContainer.getOutputAttachments();
          Attachment attachments = outputAttachments.create(filename, mimeType,decoder.decodeBuffer(content));
          outputAttachments.setAttachment(attachments);
          return "Adde1: "+filename;
     } catch (Exception e) {
          return e.toString();
(SDN helped me much in creating that
This function has no compiling errors, anything workes fine:
It takes 3 input-parameters, see also: http://help.sap.com/javadocs/pi/SP3/xpi/com/sap/aii/mapping/api/OutputAttachments.html
filename (ok, more or less contentID)
mimeType (more or less contentType)
content: Base64-encoded String which should be set as content
In my sample I use the following constants for that function:
filename = "fn1.txt"
mimeType="application/xml"
content = "UG9seWZvbiB6d2l0c2NoZXJuZCBhw59lbiBNw6R4Y2hlbnMgVsO2Z2VsIFLDvGJlbiwgSm9naHVydCB1bmQgUXVhcms=" --> cames directly from http://de.wikipedia.org/wiki/Base64
When using the message, I got this error within SXMB_MONI:
<SAP:AdditionalText>com.sap.engine.interfaces.messaging.api.exception.MessagingException: Could not queue receive for
message 0022642d-b106-02df-8e8c-f41c243bd112(INBOUND). Reason: java.lang.NullPointerException: while trying to
invoke the method com.sap.aii.af.sdk.xi.lang.Binary.getBytes() of an object returned from
com.sap.aii.af.sdk.xi.mo.xmb.XMBPayload.getContent()</SAP:AdditionalText>
This looks pretty much the same as Add Attachment from ABAP Mapping but this tread is also not answered.
Adding attachment from PI level looks also in that direction, again, no answer.
So, I was wondering if someone has solved such problem?

Hi Divyesh!
We did it that way:
1. Choosing the XML-Mailstructure as Destination as described in Configuring the Receiver Mail Adapter - Advanced Adapter Engine - SAP Library - Example (XI payload with mail package)
2. now we have created a UDF for creating the "content"
public void getContent(String[] text, String[] attFname, String[] attType, String[] attContent, ResultList result, Container container) throws StreamTransformationException{
// vergleich ob alle att-Arrays selbe anzahl haben
if (attFname.length!=attType.length || attFname.length!=attContent.length) {
    result.addValue(Integer.parseInt("Fehler: alle Attachment-Eingänge müssen die selbe Anzahl an Elementen haben!"));
    String CRLF = "\r\n";
    String output="This is a multi-part message in MIME format."+CRLF+CRLF+
    "--"+getBoundary(container)+CRLF+
    "Content-Type: text/plain; charset=UTF-8"+CRLF+
    "Content-Disposition: inline" + CRLF + CRLF +
    text[0]+CRLF;
for (int i=0;i<attFname.length;i++) {
    output+="--"+getBoundary(container)+CRLF+
    "Content-Type: "+attType[i]+"; name="+((char)34)+attFname[i]+((char)34)+CRLF+
    "Content-Disposition: attachment; filename="+((char)34)+attFname[i]+((char)34)+CRLF+
    "Content-Transfer-Encoding: Base64"+CRLF+CRLF+attContent[i]+CRLF;
output+="--"+getBoundary(container)+CRLF;
result.addValue(output);
This UDF is configured as "QUEUE"
We have configured this input-structure
The Content itself is allready base64.
So we can call this mapping and it creates a Multipart-Mail for us.

Graphical mapping or UDF

Hi,
In my mapping i have a requirement where the input can be any of three values or not existing. (lets just call them V0, V1, V2 and V3, where V0 is the not existing tag)
If the input is V0, or V1 or V2 i need output an Empty Constant, If the input is V3 i need to pass the value.
I've worked this out with a graphical mapping, but it involves a lot of boxes. It works though.
I'm still wondering if i can do it with a UDF though. Only problem is that my JAVA knowledge is not nearly as good as it should be, so maybe one of you out there can give me some ideas/code.
The thing that give the most headache is the fact that the tag might not exist at all in the source message. How do I deal with that in JAVA code?
Any ideas are welcome.
Kind regards
Robert

Hi Robert,
below is the Jave code, below code is w.r.t exection type as CONTEXT/QUEUE
public void calculate(String[] var1, String[] var2, String[] var3, String[] var4, ResultList result, Container container) throws StreamTransformationException{
if(var1.length != 0 || var2.length != 0 || var3.length != 0)
result.addvalue(" ");
else if(var4.length != 0)
result.addValue(<passthe value>);

Graphical Mapping Vs XSLT mapping Vs Java Mapping Vs ABAP Mapping

Hi Experts,
I have a question regarding different message mapping options available in XI namely
Graphical Mapping
XSLT mapping
Java Mapping
ABAP Mapping
Q1: Which amoung the above mappings is the best and why?
Q2: On what cases Graphical, XSLT, Java and ABAP Mapping should be used?
Q3: Is it true that graphical and XSLT mappings are converted into Java class internally?
Kindly help!
Thanks
Gopal
Message was edited by:
gopalkrishna baliga

Hi,
There is no hard and fast rule for using the mapping techniques.
Graphical Mapping is used for simple mapping cases. When, the logic for your mapping is simple and straight forward and it does not involve mult hiearchical mapping requirement. and context handling.
Java and XSLT mapping are used when graphical mapping cannot help you.
When the choice is between Java And XSLT, XSLT is simpler than java mapping and easier. But, it has its drawbacks. XSLT can lead to a bad perfrormance if the Source XML is huge.
Java Mapping uses 2 types of parsers. DOM and SAX. DOM is easier to use with lots of classes to help you create nodes and elements, but , DOM is very processor intensive.
SAX parser is something that parses your XML one after the other, and so is not processor intensive. But, it is not exaclty easy to develop either.
For further info on each of the mapping, refer to these links,
Graphical Mapping,
http://help.sap.com/saphelp_nw04/helpdata/en/6d/aadd3e6ecb1f39e10000000a114084/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/43/c4cdfc334824478090739c04c4a249/content.htm
XSLT Mapping
http://help.sap.com/saphelp_nw04/helpdata/en/73/f61eea1741453eb8f794e150067930/content.htm
http://www.w3.org/TR/xslt20/
Java Mapping
http://help.sap.com/saphelp_nw04/helpdata/en/e2/e13fcd80fe47768df001a558ed10b6/content.htm
DOM parser API
http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html
Also, check this thread for more info,
Different types of Mapping in XI
Am not sure about XSLT , but , yes graphical mapping is converted into java classes internally and these classes use SAX parsing as well.
Regards,
Bhavesh

How to debug global values in UDF in a graphical mapping

Hi Every one,
I got a situation in PI where i have to use global values in graphical mapping UDF.
I can't able to get the values in "Display Queue " option.
Can you please tell me what is the best way of debugging global variable in graphical mapping UDF.
1. I declare one array list in the global values
2. store some values using another UDF to the arraylist.
3. I am traversing the values in the arraylist, but the values are not showing in "Display Queue".
What is the solution to this.

Did you try with trace.addInfo?
https://help.sap.com/javadocs/NW04/current/pi/com/sap/aii/mapping/api/AbstractTrace.html
Sample code for the setMail UDF (Carrier B2B) - Business Process Expert - SCN Wiki

Should we avoid Graphical mapping and stick with Java mapping?

After developing mappings in XI for a month, I just don't see any good reasons to use Graphical mappings over Java mappings. Maybe some experienced users here can give me some valid reasons why we should choose Graphical mappings. Here is what I think:
Disadvantages of Graphical mappings:
1. No way to perform automated unit testings. This is probably the biggest reason I hate it. You can do some tests manually when you work in Integration Builder. But there is no way you can write some unit testing utilities to automate the task.
2. Complexity. Even for some simple requirements, your Graphical mappings can become complicated and hard to understand. A lot of times, I find myself staring at several dozens of graphical nodes and try to understand what it does.
3. Impossible to reuse. This is totally against the DRY (Don't repeat yourself) principle. For example, to generate messages for JDBC adapter, it is common to have two identical fields for primary keys: one in the access node and another in the key node. If you change the mapping logic in one, you have to remember to change the other.
Advantage with Java mappings:
1. Fully automated unit testing. You can create JUnit tests along with your Java mapping classes and use Maven or other build tools to perform automated unit testing.
2. Your choice of XML parsing and binding. With Java mapping, you can choose any open source framework for XML parsing and binding. For example, with XMLBeans, I can convert XML input message to a Java object, transform to another Java object and write to output message. And each Java object is generated from its corresponding XML schema.
3. Highly reusable. We can use fundamental object-oriented designs to create highly reusable mapping components.
4. Better version control. Since the mappings are just Java classes, we can use CVS or SVN to track code changes.
5. Better build tools. We can fully utilize build tools like Ant and Maven to automate the build, unit tests, or even generate documents and mapping web sites.
So do you guys agree? Maybe I am still new to XI or I am missing some important things. But at this point, I just don't see why I should use Graphical mappings. Is there anyone developing XI interfaces completely with Java mappings?
Thanks in advance for any comments!
Kenny Cheang

Hi Suraj,
> Since its graphical the blocks will take space, but
> there is always an adavntage of processing time.
> Ebven though it may appear bigger, it will take less
> time as compared with Java code (for the same
> mapping).
Could you explain more why the graphical mapping has better performance? I thought the graphical mapping is compiled into a Java class in the runtime anyway.
> Yes thats there, but same goes with Java mapping too
> right (if you haven't mentioned it as constants)
I mainly think about inheritance. If I have to build 10 interfaces and they all have some common behavior, I can create a base interface class to encapsulate the common logic. But with graphical mapping, you have to duplicate them in each interface.
> Disadvantages of Java mapping:
> 1. Performance
Same as above. I just don't see why Java has worse performance. I actually think Java should have better performance. You can optimize the code anyway you want. In some cases, you have to use queue functions in graphical mapping but it's not necessary in Java.
> 2. All might not be well versed with Java Code(though
> everyone may know basic java) .
I am not asking everyone to abandon graphical mapping. I am just wondering which one is better when you have skills for both.
> 3. Lot of standard functions are available in GM
> which you can choose, but you have to remember the
> exact code for those in Java mapping.
You can create functions in Java too. All you have to do is to remember the function name.
Kenny

Java lookup udf in graphical mapping

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