Types of mappings and its efficiency

HI All,
Till now I worked on Graphical mapping only. I want to know what is Java/Abap/XSLT mapping. In what cases we ll use what type of mapping and which one is efficienct?
please provide clear idea or any material or weblogs on this..
thanks,
anil.

Hi Satish,
These threads answer your question
ABAP Mapping Vs Java Mapping. - <b>Java mapping vs Abap mapping</b>
/people/ravikumar.allampallam/blog/2005/02/10/different-types-of-mapping-in-xi -- <b>Different type of mappings in XI</b>
cheers,
Prashanth
P.S Please mark helpful answers

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Types of Mappings and their Use

HI All,
I have been using Graphical Mapping all these days.I want to try other mappings like Java,ABAP and XSLT. Can anyone let me know as to how to go about it and which mapping to choose depending upon the scenario.
Thanks

Hi
Apart from graphical mapping u have XSLT java and ABAp mappings
Usage :
Message mapping: Has GUI drag and drop - ease of use and used for simple mapping cases
Java mapping : for complicated mappings
XSLT: Messages are in the form of XML documents. XSL Transformation (XSLT) is a member of the XML family of languages. It describes how an XML structure is transformed into another XML structure. We can even call external Java methods to convert XML messages
ABAP Mapping ->
This is based on ABAP OO classes
Refer this thread which speaks of all these types of mapping
Re: mapping objects
Mapping:
http://help.sap.com/saphelp_nw04/helpdata/en/c8/b78d406b305537e10000000a1550b0/frameset.htm
For Java Mapping:
http://help.sap.com/saphelp_nw04/helpdata/en/e2/e13fcd80fe47768df001a558ed10b6/frameset.htm
For XSLT Mapping:
http://help.sap.com/saphelp_nw04/helpdata/en/73/f61eea1741453eb8f794e150067930/frameset.htm
Error handling in XSLT Mapping:
http://help.sap.com/saphelp_nw04/helpdata/en/8a/7672f7d7e444439fd7024f806221a4/frameset.htm
You can also refer some How to guides:
XI New Mapping Features article,
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/xi%203.0%20new%20mapping%20features%20article.evn
Generic XSLT Mapping and Sample Code,
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/xi%20code%20samples/generic%20xslt%20mapping%20and%20sample%20code.pdf
How to use ABAP-MApping in XI3.0,
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/3.0/how%20to%20use%20abap-mapping%20in%20xi%203.0.pdf

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I am trying to develop a J2EE application but find
myself stuttering at an early stage because I cannot
decide on the best design for my application. Part of
my problem is a lack of experience with the different
J2EE technologies/API (especially XML APIs), and theThat's nothing to be ashamed of. And realising that you lack experience and trying to remedy that is a good sign.
A major issue is this: my application basically is
concerned with representing conversations between the
server and a user, e.g. a simple sequence of yes/no
questions asked by the server to the user, which the
user replies to in turn. I believe that the XML
format would be a very suitable way to represent
these conversations. My first question is:
XML might be overkill if it's just a question followed by an answer and neither contains complex hierarchical data structures.
* Should the decision to use XML as a storage format
influence the design of the rest of the program? ICertainly not.
XML should represent data structures that are natural to your program, thus becoming a tool rather than forcing its structure upon you.
feel that in choosing XML to represent the
conversation data, I am stuck thinking about the rest
of my program in a XML way (i.e. doing everything
using a DOM etc.). Am I right in thinking that my
program should be designed in such a way that an
XML-based storage system could be easily interchanged
with, say, a relational flat-tabled database?
Flexibility is good to keep in mind, but at the moment I'd worry about just getting something to work.
* Imagine that each conversation contains one or more
questions, and there are, say, 4 different types of
question (e.g. yes/no, multiple choice, etc.). Each
of these needs to be handled in a different way. Is
there a good pattern or recommended way of handling
this sort of situation in code, ideally avoiding a
big 'if' or switch statement (e.g. if the node is of
"ABC" type do this, else if it is "yes/no"...). It
would be great if one could easily add new types of
question to the XML and then similarly one can make
easy additions to the code to cope with these new
cases.
Think of a factory that creates the handlers on the fly based on the actual message received.
If the factory makes use of some mapping construct to do so there's no need for any conditionals at all in your decision tree.
I've myself used XML structures successfully to define such mappings (and so have others) on disc, but simple ones can be easily represented using just a properties file.

How many types of mappings in sap xi

hi,
how many types of mappings in sap xi,what are there can u explain me
bye
phenix

hi suresh,
There are 4 types of mapping in XI
1. Graphical
2. XSLT
3. java
4. ABAP.
There is no hard and fast rule for using the mapping techniques. But, I will try to put things in the right perspective for you.
Graphical Mapping is used for simple mapping cases. When, the logic for your mapping is simple and straight forward and it does not involve any complex logic.
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. One among them being that you cannot use Java APIs and Classes in it. There might be cases in your mapping when you will have to perfrom something like a properties file look up or a DB lookup, such scenarios are not possible in XSLT and so, when you want to use some specific Java API's you will have to go for Java Mapping.
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
Regards,
Bhavesh

Types of mappings and its efficiency

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