Java Mapping after XI 2.0 - 3.0 Migration

hi together,
Now i am checking the Migration of XI 2.0 to XI 3.0. Now my question: It is possible to use the Java-Mappings from XI 2.0 in XI 3.0. Has anybody experience with this topic?
Thanks Marc.

Hi Marc,
When you said Java mappings, I have to add the following: There are two kinds of Java mappings in Xi; Those declared in the mapping tool and those you develop outside Xi and import as imported archives into your SWC.
As far as I know For the first type of java mappings there shouldn't be any problem when using them in Xi 3.0, as these are standard Java classes that can run on any platform...
For the second type of Java mappings the same rule applies (write once runs everywhere ), with the only difference that these mappings will be "migrated" together with the rest of the message mapping. One advice I can give is to carefully test all your mappings after you have done the migration to Xi 3.0.
Please share any experience about this particular topic with the forum.
Cheers,
Rob.
Message was edited by: Rob Viana

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Hi
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How to execute an ABAP Mapping after a Java Mapping

Hi, i have found a Bug in XI and SAP said to me that the only solution is to execute an ABAP mapping after my java mapping.
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SOURCE. MSG A -> ORIGINAL MAPPING -> TARGET MSG B
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Creation of additional attachment in Java Mapping

Hello all,
I want to use a Java Mapping with the functionality to create a second /attachment which I can send over email out?
I dont want to pick this file somewhere from the server, instead I want to fill the content of the additional attachment directly in the java mapping.
I hope somebody knows the answer of my question.
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hi Stefan,
http://scn.sap.com/thread/1874962
Regarding the comment in this thread, can you please tell me if you have faced any issue with creating output attachments. Right now, i have a message mapping in which i have written a udf to create attachments
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udf :-
GlobalContainer globalContainer = container.getGlobalContainer();
OutputAttachments outputAttachments = globalContainer.getOutputAttachments() ;
int flag =0;
AbstractTrace trace = container.getTrace();
String attachmentName = "";
//for(int i=0;i<var1.length;i++){
try
var1=var1.replaceAll("><",">\n<");
attachmentName = "attachment"+cnt;
Attachment newopAttachment = outputAttachments.create((attachmentName), var1.getBytes("UTF-8"));
outputAttachments.setAttachment(newopAttachment);
trace.addInfo("newopAttachment"+newopAttachment);
cnt=cnt+1;
attachmentName ="";
newopAttachment = null;
var1="";
catch (Exception e)
trace.addInfo("ever reaching trace");
 e.printStackTrace();
//result.addValue("1");
//result.addValue("1");
return "1";
Input :-
Messages
Message1
SBDH
SBDH
SBDH
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Your help is highly appreciated.
Regards,
Ninu

Error in Java Mapping for Single XML conversion

We are working on ABAP Proxy --> SAP PI 7.1 --> SOAP (Synchronous Scenario).
(ECC -> PI -> Legacy CRM)
Client has provided a WSDL with Single Node of XML and asking us to pass the whole structure as an single string along with all the nodes of data structure. To perform mapping we are using Java Mapping.
Message which we are getting after Java Mapping:
Input
<?xml version="1.0" encoding="UTF-8"?>
<ns0:MT_SOReject_Sender xmlns:ns0="http://MTSINDIA/TC/SalesOrderReject">
 <ITEM>
 <sSlsOrderCode>1001</sSlsOrderCode>
 <sDlrCode>A250</sDlrCode>
 <sRejectReason>Z2</sRejectReason>
 <nCircleCode>2</nCircleCode>
 </ITEM>
</ns0:MT_SOReject_Sender>
Output
<?xml version="1.0" encoding="UTF-8"?><MT_Trg xmlns:ns="urn:Test_File_to_File"><stringinp><?xml version="1.0" encoding="UTF-8"?><ns0:MT_SOReject_Sender xmlns:ns0="http://MTSINDIA/TC/SalesOrderReject"><ITEM><sSlsOrderCode>1001</sSlsOrderCode><sDlrCode>A250</sDlrCode><sRejectReason>Insufficient Stock Balance</sRejectReason><nCircleCode>2</nCircleCode></ITEM></ns0:MT_SOReject_Sender></stringinp></MT_Trg>
Is ther any way from which we can convert > as u201C>u201D and < as u201C<u201D. Required result is as follows
Required Output
<?xml version="1.0" encoding="UTF-8"?><MT_Trg xmlns:ns="urn:Test_File_to_File"><stringinp><?xml version="1.0" encoding="UTF-8"?><ns0:MT_SOReject_Sender xmlns:ns0="http://MTSINDIA/TC/SalesOrderReject"><ITEM><sSlsOrderCode>1001</sSlsOrderCode><sDlrCode>A250</sDlrCode><sRejectReason>Insufficient Stock Balance</sRejectReason><nCircleCode>2</nCircleCode></ITEM></ns0:MT_SOReject_Sender></stringinp></MT_Trg>
We are using following Java Code for the same.
import java.io.BufferedReader;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.util.Map;
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
 import org.w3c.dom.Element;
 import org.w3c.dom.Document;
 import org.w3c.dom.Text;
 import com.sap.aii.mapping.api.*;
 import com.sap.aii.mapping.api.StreamTransformation;
public class SingleStr implements StreamTransformation{
 * @author user
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 public static void main(String args[]) throws Exception {
 FileInputStream inFile =
 new FileInputStream("C:/Documents and Settings/user.HR0102WILT00033/Desktop/Input.XML");
 FileOutputStream outFile =
 new FileOutputStream("C:/Documents and Settings/user.HR0102WILT00033/Desktop/Output.XML");
 SingleStr xml = new SingleStr();
 xml.execute(inFile, outFile);
 System.out.println("Success");
 public void setParameter(Map param) {
 Map map = param;
 public void execute(InputStream in, OutputStream out)
 throws com.sap.aii.mapping.api.StreamTransformationException {
 try {
 //************************Code To Generate The XML Parsing Objects*****************************//
 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 DocumentBuilder db = dbf.newDocumentBuilder();
 TransformerFactory tf = TransformerFactory.newInstance();
 Transformer transform = tf.newTransformer();
 //Document doc = db.parse(in);
 Document docout = db.newDocument();
 Element root = docout.createElement("MT_Trg");
 root.setAttribute("xmlns:ns","urn:Test_File_to_File");
 docout.appendChild(root);
 Element stringinp = docout.createElement("stringinp");
 root.appendChild(stringinp);
 BufferedReader inpxml = new BufferedReader(new InputStreamReader(in));
 StringBuffer buffer = new StringBuffer();
 String line="";
 while ((line = inpxml.readLine()) != null)
 buffer.append(line);
 String inptxml=buffer.toString();
 Text srcxml = docout.createTextNode(inptxml);
 stringinp.appendChild(srcxml);
 DOMSource domS = new DOMSource(docout);
 transform.transform((domS), new StreamResult(out));
 } catch (Exception e) {
 System.out.print("Problem parsing the file: " + e.getMessage());
 e.printStackTrace();
Please help!!

We are using following Java Code for the same.
import java.io.BufferedReader;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.util.Map;
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerFactory;
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
 import org.w3c.dom.Element;
 import org.w3c.dom.Document;
 import org.w3c.dom.Text;
 import com.sap.aii.mapping.api.*;
 import com.sap.aii.mapping.api.StreamTransformation;
public class SingleStr implements StreamTransformation{
 public static void main(String args[]) throws Exception {
 FileInputStream inFile =
 new FileInputStream("C:/Documents and Settings/user.HR0102WILT00033/Desktop/Input.XML");
 FileOutputStream outFile =
 new FileOutputStream("C:/Documents and Settings/user.HR0102WILT00033/Desktop/Output.XML");
 SingleStr xml = new SingleStr();
 xml.execute(inFile, outFile);
 System.out.println("Success");
 public void setParameter(Map param) {
 Map map = param;
 public void execute(InputStream in, OutputStream out)
 throws com.sap.aii.mapping.api.StreamTransformationException {
 try {
 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
 DocumentBuilder db = dbf.newDocumentBuilder();
 TransformerFactory tf = TransformerFactory.newInstance();
 Transformer transform = tf.newTransformer();
 //Document doc = db.parse(in);
 Document docout = db.newDocument();
 Element root = docout.createElement("MT_Trg");
 root.setAttribute("xmlns:ns","urn:Test_File_to_File");
 docout.appendChild(root);
 Element stringinp = docout.createElement("stringinp");
 root.appendChild(stringinp);
 BufferedReader inpxml = new BufferedReader(new InputStreamReader(in));
 StringBuffer buffer = new StringBuffer();
 String line="";
 while ((line = inpxml.readLine()) != null)
 buffer.append(line);
 String inptxml=buffer.toString();
 Text srcxml = docout.createTextNode(inptxml);
 stringinp.appendChild(srcxml);
 DOMSource domS = new DOMSource(docout);
 transform.transform((domS), new StreamResult(out));
 } catch (Exception e) {
 System.out.print("Problem parsing the file: " + e.getMessage());
 e.printStackTrace();
Please help!!

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

Java Mapping - Not able to compile .Java file

Hi Experts,
I am working with a sample scenario which involves Java Mapping. For this I created MappingClass.java file, After compiling the .Java file .Jar file would be used for Java Mapping by using Imported Archives.
After compiling the MappingClass.java file, I am getting the errors as below.
--> Java errors after compilation
C:\j2sdk1.4.2_13\bin>javac MappingClass.java
MappingClass.java:4: package com.sap.aii.mapping.api does not exist
import com.sap.aii.mapping.api.AbstractTrace;
                               ^
MappingClass.java:5: package com.sap.aii.mapping.api does not exist
import com.sap.aii.mapping.api.StreamTransformationConstants;
--> End of java errors
In the MappingClass.java file, I had given followed imports.
import java.util.*;
import com.sap.aii.mapping.api.AbstractTrace;
import com.sap.aii.mapping.api.StreamTransformationConstants;
Could some one please guide me to resolve this issue.
Thanks in advance.
..Sree

Hi
I had copied " aii_map_api.jar " file in my Java Class path folder.. i.e " C:\j2sdk1.4.2_08\bin "     AND    " C:\j2sdk1.4.2_08\lib " folders too.. and even in C:\ i.e Root Drive also.
After trying to Compile my java file (ex : MappingClass.java), still I am getting the errors.
Errors shown as below.
--> Errors
C:\mytest>javac MappingClass.java
MappingClass.java:2: package com.sap.aii.mapping.api does not exist
import com.sap.aii.mapping.api.AbstractTrace;
                               ^
MappingClass.java:3: package com.sap.aii.mapping.api does not exist
import com.sap.aii.mapping.api.StreamTransformationConstants;
                               ^
MappingClass.java:6: cannot resolve symbol
symbol : class AbstractTrace
location: class MappingClass
    private static AbstractTrace trace = null;
                   ^
MappingClass.java:12: cannot resolve symbol
symbol : class AbstractTrace
location: class MappingClass
        trace = (AbstractTrace)inputparam.get(
                 ^
MappingClass.java:13: cannot resolve symbol
symbol : variable StreamTransformationConstants
location: class MappingClass
                   StreamTransformationConstants.MAPPING_TRACE );
                   ^
5 errors
--> End of Errors
Could some one please guide me to resolve this issue.
Thanks in advance.
..Sree

Issue with java mapping in a multi-mapping scenario

Hi
 We have a 1:n multiple mapping scenario in XI and the source is R3 proxy and target side is files. So, creating multiple file from a single message from R3 .
R3 --> XI --> Multiple files
Structure of the output of the multi-mapping is
- <ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
- <ns0:Message1>
<Transaction>
</Transaction>
<Transaction>
</Transaction></ns0:Message1>
</ns0:Messages>
wherein each Transaction node represents a file.
Now, we need to introduce a constant /string like
<!DOCTYPE Transaction PUBLIC \"-//XXXXXX//DTD BatchReceiptAuthorization//EN\" \"http://dtd.XXXXXXX.com/dtds/ReceiptAuthorization.dtd\">
on each of the files at the very beginning - i.e within each transaction node , in the above structure, we need the above DTD string to be written. To do this, we added a java mapping as the second mapping after the message mapping that creates this string. Is this the right approach and would it produce what we are expecting ?
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.Map;
import com.sap.aii.mapping.api.StreamTransformation;
import com.sap.aii.mapping.api.StreamTransformationException;
import com.sap.aii.mapping.api.StreamTransformationConstants;
import com.sap.aii.mapping.api.DynamicConfiguration;
import com.sap.aii.mapping.api.AbstractTrace;
public class ModifyRootAndDelay implements StreamTransformation {
 AbstractTrace myTrace;
public void execute(InputStream input, OutputStream output) throws StreamTransformationException {
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 BufferedReader reader = new BufferedReader(new InputStreamReader(input));
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 String sLine = null;
 StringBuffer XmlMsg= new StringBuffer();
 String Result,PayloadBody;
 int indexOfFirst;
 while ((sLine = reader.readLine()) != null) {
 XmlMsg.append(sLine);
 String StartingTag = XmlMsg.toString();
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 PayloadBody=new String(XmlMsg.substring(indexOfFirst));
 Result=NameSpacePrefix.concat(PayloadBody);
 output.write(Result.getBytes());
 /* Thread.sleep(200000); */
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 myTrace.addWarning("Exception raised in the JavaMapping:modifyNamespace.java""\n The Exception Message: " e.getMessage());
 throw new RuntimeException(e.getMessage()) ;
 } public void setParameter(Map param) {
 myTrace = (AbstractTrace) param
 .get(StreamTransformationConstants.MAPPING_TRACE);

Hi XI Gurus
 In my scenario, I sent the inputstream that is being passed to the Java execute method - to trace and I see that the whole of the xml file - as shown below - which is the output of message mapping ( from the first mapping step ) in sent to the execute method of the java mapping a single call
<ns0:Messages xmlns:ns0="http://sap.com/xi/XI/SplitAndMerge">
<ns0:Message1>
<Transaction> </Transaction>
<Transaction> </Transaction>
</ns0:Message1>
<ns0:Messages>
So, I modified Java mapping program to look for multiple occurences of <Transaction> tag and prefix them with my constant DTD Literal - which is the primary reason , why I had to use Java mappings after the message mapping.
Now, I get an error is XI- SXMB_MONI
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">
<SAP:Category>XIServer</SAP:Category>
<SAP:Code area="MAPPING" />
<SAP:P1>unexpected symbol; expected '<', '</', entity refe</SAP:P1>
<SAP:P2>rence, character data, CDATA section, processing i</SAP:P2>
<SAP:P3>0</SAP:P3>
<SAP:P4>113</SAP:P4>
<SAP:AdditionalText />
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack>The exception occurred (program: CL_XMS_MAIN===================CP, include CL_XMS_MAIN===================CM00A, line: 609)</SAP:Stack>
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
Should I create multiple outputs - as many as the numberof target split files ( of type outputstream ) from the execute method in the java program ?

XSLT MAPPING/JAVA MAPPING

Hi All,
After faceing so much of problem, i found that it would be better if i can go for an XSLT/java mapping:
1. It is adding an extra ns0 to header line & end line which i dont want to be generated in the output xml file.
2. Namespace problem that basically sticking to 60 but i want 72 characters in my target xml file.
3. No carriage return at the end of each line which is not geting generated through graphical mapping.
Now i have an XSD provided by the client. So how can i use that and which mapping should best suits to solve all these problem.
Should i go for a java mapping or an XSLT/JAVA mapping.
I dont have any idea on both of them, So can you people send me the details for it.
Many Thanks & Best Regards,
JGD.

Hi,
Based on the requirement and size we can choose the mapping.
If java is suitable to our requirement then we go for java.
If XSLT is suitable to our requirement then we go for XSLT.
Performance wise(high --> low) :
If data is less then
Graphical mapping -
> Java(sax parser)mapping -
> Java(dom parser)mapping -
> XSLT mapping -
> ABAP mapping.
If data is high then
XSLT mapping -
> Java(sax parser)mapping -
> Graphical mapping(internally it uses SAX)----> Java(dom parser)mapping -
> ABAP mapping.
If you choose XSLT then you can select Altova Map Force tool then no need to write the XSLT code here, it will automatically generates the code.
N:1 XSLT Mapping
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/30ac53f2-21d7-2a10-afa2-ce1a0577ca18
XSLT mapping https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/006aa890-0201-0010-1eb1-afc5cbae3f15

Xerces for XSD 1.1 Validation not working in Java Mapping

Hi Experts,
We are trying to use XSD 1.1 (assertion feature) validation for the XML payload in a Java mapping program. But I am getting the following exception:
java.lang.IllegalArgumentException: http://www.w3.org/XML/XMLSchema/v1.1 at javax.xml.validation.SchemaFactory.newInstance(SchemaFactory.java:186)
This is happing for the statement:
SchemaFactory factory = SchemaFactory.newInstance("http://www.w3.org/XML/XMLSchema/v1.1");
The reason (apparently) is because it is not able to instantiate the class org.apache.xerces.jaxp.validation.XMLSchema11Factory , which is the Xerces implementation of the SchemaFactory class.
I have tried following things so far -
1. If I try to validate an xml against an xsd 1.1 schema in a standalone program, it works perfectly fine.
2. If I try to deploy this whole functionality on to the server through an EAR (like an adapter module), there again it works.
3. Also tried this before instantiating the SchemaFactory -
System.setProperty("javax.xml.validation.SchemaFactory:http://www.w3.org/XML/XMLSchema/v1.1","org.apache.xerces.jaxp.validation.XMLSchema11Factory");
4. I tried by creating the Imported Archive objects for all the Xerces jars that we require for validation, within the same SWCV, namespace. But still I get the same exception as above (IllegalArgumentException)
5. The link [http://help.sap.com/saphelp_nw70/helpdata/en/b6/8097f5a5edea4f8dfc87ac87082b22/content.htm ] mentions that we need to place all the necessary jars at location <SAP_J2EE_Engine_install_dir>/cluster/server/bin/ext /. But even after placing the jars there, I get the same exception.
I am not sure how we need to handle this. Has anybody faced a similar situation? Any suggestions?
Regards,
Sudheer

Hi Stefan,
Thanks for the reply.
We are on PI 7.1 SP 06. The standard XML tools from jdk supports only XSD 1.0, as far as I know. And XSD 1.0 does not have the Assert feature (also known as, co-occurrence constraint). More details are provided here - [http://www.ibm.com/developerworks/library/x-xml11pt2/]
To use XSD 1.1, we need a different implementation like Xerces-J. I am not sure how we can use it without external jars. I would like to mention again that I could achieve this by using an adapter module (EAR containing the jars), but I need to do this in Java Mapping (imported archive).
Do you know how we can achieve this in any other way? Any other suggestions welcome.
Thanks & Regards,
Sudheer

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

N:1 Mapping Possible using Java Mapping?

All,
Is it possible to do a N:1 mapping using Java Mapping?
If yes , how?
Reason for this question is that the execute() of the Java Mapping is going to take the source / request message as the InputStream . In the case of N:1 mapping , as we have multiple messages , how will they be send to the InputStream? Will both the messages be sent combined into the InputStream? Will the MESSAGES tag be embedded into the input stream?
Regards,
Bhavesh

Hi @ll;
i try the same.
to conduct a java mapping with 2 input structures that fills one target structure.
This mapping is part of a Integrationprocess.
I tested the mapping at the Integration Repository (Interface mapping) with the structure given by henrique and it works fine without any error.
At runtime this structure looks like this (different prefix)
<?xml version="1.0" encoding="UTF-8"?>
<sxi:Messages xmlns:sxi="http://sap.com/xi/XI/SplitAndMerge">
 <sxi:Message1>
 <YOURXML1>...</YOURXML1>
 </sxi:Message1>
 <sxi:Message2>
 <YOURXML2>...</YOURXML2>
 </sxi:Message2>
</sxi:Messages>
As I put it in the Integrationprocess unfortunately a strange error arises.
The trace Workflow-Protocoll shows following error.
<Trace level="2" type="T">Call method execute of the application Java mapping com.endress.infoserve.xi.mapping.MergeConfigStore_IdocOrder </Trace>
<Trace level="2" type="T">Java mapping com/endress/infoserve/xi/mapping/MergeConfigStore_IdocOrder completed. (executeStep() of com.endress.infoserve.xi.mapping.MergeConfigStore_IdocOrder </Trace>
<Trace level="1" type="T">Parsing error after multi mapping.Expected Message instead of IDOC </Trace>
I can't make head nor tail of it.
what´s the mistake?
can anybody please help me?
Thanks in advance
Kind regards

How to avoid Linkage Error in JAVA Mapping

Dear Experts,
I am trying to test the JAVA mapping compiled in NWDS but receiving the error
"LinkageError at JavaMapping.load(): Could not load class".
java.lang.NoClassDefFoundError: JSONXMLProject/bin/com/sap/json/ConvJson2Xml (wrong name: com/sap/json/ConvJson2Xml)
at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:735)
at java.lang.ClassLoader.defineClass(ClassLoader.java:716) at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
at com.sap.aii.ib.server.mapping.execution.MappingLoader.findClass(MappingLoader.java:195)
Following are the details:
SAP PO 7.4
SP Stack Number 05
JDK Version jdk16
NWDS
SAP Enhancement Package 1 for SAP NetWeaver Developer Studio 7.3 SP10 PAT0000
1.Created the Project , Package and then class (Included the logic)
2. Included 1 JSON Jar file into my project and the Added to build path.
3.Exported the project as Archive File and saved in desktop
4.Imported into SAP PO system as Imported Archive
5.Could not observe the JSON jar file which i used as referenced JAR in NWDS
6.Tested in OM after referencing the JAVA class and found the above error.
I have JDK 5, 6 and 7 present in my local desktop and I am trying to export the compiled code using both JAVA SE 1.6 and 1.5 in NWDS seperatly after going several discussions.
Can any one hep me with the screenshots and tell me how to include all the reference jar files in exported project..
Regards..

Dear Anand,
I did exactly as you shared. As the JSON jar has number of classes, then in OM all the Classes had to be assigned. Then the linkage error went.
But in execution , it shows a new error that all the classes of the JSON jar has to be implemented with interface StremTransformation or AbstractTransformation.
I assume in the Operation Mapping I will use only 1 class as JAVA Class. Anyway I am attaching the document with navigation.
Do we have any other alternative??
Please rename the extension of the document by remove .txt
Regards

Problem in SAX Java mapping

Hi,
I'm using SAX Java mapping in one scenario. Problem is when I get some Croatina characters, like Đ or u0160,
output XML is not valid. XML Spy complains, IE complains and so on. Customer is sure that data ( XML in CLOB field in Oracle DB) is UTF-8? What could be a problem?
What I'm doing is reading entire XML into string with help of BufferedReader, then do some manipulation and write String into byte array with:
 byte[] bytes = file.toString().getBytes("UTF-8");
 saxParser.parse(new ByteArrayInputStream(bytes), handler);
and then of course parse XML. readLine method reads data and problematic is "Ä�" - ￯0 - 0xC490.
For this character XML Spy doesn't complain, IE also. After conversion, this character looks like "Ä?" - 0xC43F, and this is not good any more. Why?

Hi Stefan,
I've finally done it. Code as foollws:
 public void execute(InputStream in, OutputStream out)
 throws com.sap.aii.mapping.api.StreamTransformationException {
 DefaultHandler handler = this;
 SAXParserFactory factory = SAXParserFactory.newInstance();
 try {
 SAXParser saxParser = factory.newSAXParser();
 fStreamOut = new BufferedWriter(new OutputStreamWriter(out, "UTF-8"));
 encoding = "UTF-8";
 if (map != null) {
 mappingTrace = (MappingTrace) map
 .get(StreamTransformationConstants.MAPPING_TRACE);
 InputStreamReader is = new InputStreamReader(in, "UTF8");
 BufferedReader reader = new BufferedReader(is);
 StringBuffer file = new StringBuffer();
 String line = new String();
 try {
 while ((line = reader.readLine()) != null) {
 file.append(line);
 } catch (IOException e) {
 e.printStackTrace();
 } finally {
 try {
 in.close();
 } catch (IOException e) {
 e.printStackTrace();
 Date d4 = new Date();
 file = replaceREGEX(
 "<\\?xml version=\"1\\.0\" encoding=\"UTF-8\"\\?>", "",
 file);
 char[] cArray = file.toString().toCharArray();
 Date filedat = new Date();;
 SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd_HHmmss_SSS");
 String fName = df.format(filedat) + "_El_Invoice.xml";
 Writer out1 = new BufferedWriter(new OutputStreamWriter(
 new FileOutputStream(fName), "UTF8"));
 try {
 out1.write(file.toString().toCharArray());
 out1.close();
 } catch (UnsupportedEncodingException e) {
 } catch (IOException e) {
 saxParser.parse(fName, handler);
 File outFile = new File(fName);
 outFile.delete();
 } catch (Throwable t) {
 if (mappingTrace != null) {
 mappingTrace.addInfo(t.toString());
 t.printStackTrace();
problem was also in method for writing in output stream, so I've changed it:
 private void printOutPut(String sOP) {
 try {
 // fStreamOut.write(sOP.getBytes());
 fStreamOut.write(sOP);
 } catch (IOException e) {
 e.notify();

Problem in Uploading Java mapping Code

Hi Guys,
I never work on Java mapping before, i got the code required for my progrmme in these forums.So i saved it as a text file. now i want to import that fileintomy programme as Java class. i think i have to use Netweaver Studio. what exactly i have o do it.
Thanks in advance.
Kartik

Hello Kartik,
If your code is handling the Required Mapping.Then what is you need to do is :
Create the Jar file using any Java IDE (or) use Netweaver developer studio.
Before creating the u201Cjaru201D file just make sure that the "path" of the class file in the imported archive. It should be the
same as your "package" path.
Once the class file is created, we have to create the jar file with all the necessary files. After creating the jar file, it
has to be deployed to XI.
Import the Jar file using Imported Archive in IR under Mapping Objects.
See this blog it explains how to load :
Java Mapping (Part III)
After doing the necessary setps you can test the Mapping.
regards
Gangaprasad

Java Mapping after XI 2.0 - 3.0 Migration

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