Xml mapping with JPA error

I am İshak Teyran , the data manager of a team which attends to IBM XML Challenge Turkey, we are trying to build a dynamic web project in Rational Software Architect 7.5, WAS 7.0 , DB2 9.5 EE.
the article of Vitor Rodrigues - http://www.ibm.com/developerworks/data/library/techarticle/dm-0901rodrigues/index.html - describes how to map xml to java using pureQuery however we need to do the same using JPA.. is there any difference?
we are trying to achieve the same using JPA. but unfortunately we failed..
for simplifying lets assume we have two tables , STUDENT ( id int, name char) and COURSES ( studentID int , and lessons xml) ... these two tables are related to each other with studentID foreign key... and we want to have student and courses java files where courses.java includes proper mapping to xml column lessons..
i tried to make an .xsd file for xml column lessons.. and then i created its java file.. then i used JPA for creating student and courses java files but it always turns me a null pointer exception.. i dont know why.. and as result , only student.java is being created..
i have tried following steps.
My database connection and the tables are already present.
1- i have created a new dynamic web site project, namely dene..
from project facets i enabled dynamic web module, faces support (base, enhanced componnents) , Java Persistence, Javascript Toolkit, JavaServer faces, JSTL, Web 2.0 , Websphere Web(Co-existence),Websphere Web(Extended),Default Style Sheet facets.. and these facets musts be enabled for our project.
2- i have created the CourseList.xsd and using -JAXB- i have created lessons.java
3- i right clicked project and from the menu .. JPA tools->Generate Entities .. i choose connection and tables to generate entities but unfortunately no entity gets created ... when i only choose student table to generate the entity of, Student.java is being created however Courses.java always returns nullpointerexception..
the stack trace of the exception is in the picture i attached.. here is its link.... [http://www.ibm.com/developerworks/forums/servlet/JiveServlet/download/430-250134-14212507-336353/hata.JPG]
i have thought it might be because i use the openjpa and jaxb libraries of RSA.. and then i tried to load the latest versions of JAXB and openjpa .. i added all of their .jar files to the application classpath.. (if it is sufficient to add only openjpa-1.2.0.jar and jaxb-api.jar files let me know it please).. but this did not work neither..
the only exception i get is :
An internal error occurred during: "Generating Entities".
java.lang.NullPointerException
while creating lessons.java and the entity java files i am making sure that i give the same package name for both ... but i never succeeded creating courses.java..
in RSA when i right click to project and go te JPA Tools menu there is a menu item "Configure Project for JDBC deployment" .. what is this for.. i have also tried using this and then trying to create entities but this failed too..
then when they did not work ;
i have decided to code the classes myself but in order to get things a little easier, i opened my DB and converted the XML column to a SMALLINT column .. just not an XML column... and then using JPA in RSA - i did not include openJPA jars in my project externally- i created the classes .. both Course.java and Student.java have been created well, because the column that was actually xml was converted to small integer..
and if i add the related persistence and strategy lines :
@Persistent
@Strategy("org.apache.openjpa.xmlmapping.XmlValueHandler")
to their proper places and editing the function and attributes data types and return types and then if i re-convert the column to XML data type in database, do you think it will work properly?
so i really need a suggestion.. any help will be appreciated..
what would you suggest?
how can we achieve this goal for those two tables i mentioned above in RSA and using JPA ?

Hi Tushar
You will need to be more specific. Do you want an XML layout to use for importing or exporting SAP Business One objects? Maybe give us details of the specific object. Most DI API objects have a write to XML which will give you the layout for that object. You can also refer to the REFDI.CHM file under the SDK Help folder.
Kind regards
Peter Juby

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Hello Sebastien,
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See setCascadeMerge on ForeignReferenceMapping.
Best Regards,
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Hi Somil,
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Message was edited by: Jochen Gugel

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DECLARE
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------------- y.xml ----------------
<purchaseOrder>
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Any help is appreciated

Hello,
The error occurs as far as your XSL file has incorrect structure. Your have to transform incoming XML in so-called (by Oracle) canonical form i.e.:
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<FIELD_N>value-for-field-N</FIELD_N>
</ROW>
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</ROW>
</xsl:template>
</xsl:stylesheet>
Hope this will help.

Catch all error information while validating xml content with xsd schema

Hi experts,
I created a java mapping to validating the input xml content with xsd schema (schema validation). What I want is to catch all error message to the xml not just the first error. I used SAXParser in sapxmltoolkit.jar to do the schema validation. The below is a part of my java mapping.
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public class ParseErrorHandler extends DefaultHandler
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Unfortunately the program always stopped while catching the first error. Check the below log.
com.sap.engine.lib.xml.parser.NestedSAXParserException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException:
ERRORS :
cvc-simple-type : information item '/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' is not valid, because it's value does not satisfy the constraints of facet 'minLength' with value '1'.
cvc-data : information item '/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' is is not valid with respoct to the corresponding simple type definition.
cvc-element : element information item '/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' is associated with invalid data.
cvc-element : element information item '/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]' is not valid with respect to it's complex type definition..
cvc-element : element information item '/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]' is not valid with respect to it's complex type definition..
cvc-element : element information item '/:ShipNotice[1]/:Header[1]/:To[1]' is not valid with respect to it's complex type definition..
cvc-element : element information item '/:ShipNotice[1]/:Header[1]' is not valid with respect to it's complex type definition..
cvc-element : element information item '/:ShipNotice[1]' is not valid with respect to it's complex type definition..
-> com.sap.engine.lib.xml.parser.ParserException:
I tried using Xerces and JAXP to do validation, the same error happened. I have no idea on this. Does xi has its own error handler logic? Is there any body can make me get out of this?
Thanks.

<h6>Hi experts,
<h6>
<h6>I created a java mapping to validating the input xml content with xsd schema (schema validation). What I want is to catch all <h6>error message to the xml not just the first error. I used SAXParser in sapxmltoolkit.jar to do the schema validation. The below <h6>is a part of my java mapping.
<h6>XMLReader parser = XMLReaderFactory.createXMLReader("com.sap.engine.lib.xml.parser.SAXParser");
<h6>parser.setFeature( "http://xml.org/sax/features/validation" , true);
<h6>parser.setFeature( "http://apache.org/xml/features/validation/schema" , true);
<h6>parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage", "http://www.w3.org/2001/XMLSchema");          <h6>parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaSource",this.getClass().getClassLoader().getResourceAsStream(schema)); <h6>// schema is my schema name
<h6>parser.setErrorHandler(new ParseErrorHandler()); // ParseErrorHandler is my own ErrorHandler which extends Default Handler
<h6>parser.parse(new InputSource(new ByteArrayInputStream(sinput.getBytes())));
<h6>
<h6>// In error handler, I comment all code so as not to throw any exception
<h6>public class ParseErrorHandler extends DefaultHandler
<h6>{
<h6>     public void error(SAXParseException e) throws SAXException
<h6>     {
<h6>          // sSystem.out.println("Error" + e.getMessage());
<h6>          // throw e;
<h6>     }
<h6>
<h6>     public void fatalError(SAXParseException e)
<h6>     {
<h6>          // throw e;
<h6>          // System.out.println("SAP Fatal Error" + e.getMessage());
<h6>
<h6>     }
<h6>
<h6>}
<h6>
<h6>Unfortunately the program always stopped while catching the first error. Check the below log.
<h6>
<h6>com.sap.engine.lib.xml.parser.NestedSAXParserException: Fatal Error: com.sap.engine.lib.xml.parser.ParserException:
<h6>ERRORS :
<h6>cvc-simple-type : information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' <h6>is not valid, because it's value does not satisfy the constraints of facet 'minLength' with value '1'.
<h6>cvc-data : information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' <h6>is is not valid with respoct to the corresponding simple type definition.
<h6>cvc-element : element information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]/:CityName[1]' <h6>is associated with invalid data.
<h6>cvc-element : element information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]/:AddressInformation[1]' <h6>is not valid with respect to it's complex type definition..
<h6>cvc-element : element information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]/:PartnerInformation[1]' <h6>is not valid with respect to it's complex type definition..
<h6>cvc-element : element information item <h6>'/:ShipNotice[1]/:Header[1]/:To[1]' <h6>is not valid with respect to it's complex type definition..
<h6>cvc-element : element information item <h6>'/:ShipNotice[1]/:Header[1]' <h6>is not valid with respect to it's complex type definition..
<h6>cvc-element : element information item '/:ShipNotice[1]' is not valid with <h6>respect to it's complex type definition..
<h6> -> com.sap.engine.lib.xml.parser.ParserException:
<h6>
<h6>
<h6>I tried using Xerces and JAXP to do validation, the same error happened. I have no idea on this. Does xi has its own error <h6>handler logic? Is there any body can make me get out of this?
<h6>Thanks.

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Hi all,
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In this case I have a Business System without logical system name in the SLD. This information for the IDoc control record, like SNDPOR, I will map with a xslt mapping.
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<xsl:output method="xml"/>
<xsl:preserve-space elements="*"/>
<xsl:template match="DATEN">
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<IDOC>
<xsl:attribute name="BEGIN">1</xsl:attribute>
<EDI_DC40>
<xsl:attribute name="SEGMENT">1</xsl:attribute>
<TABNAM>EDI_DC40</TABNAM>
<DOCREL></DOCREL>
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<MESTYP>_-XXX_-018_XXXXX_XIDATEN</MESTYP>
<SNDPOR></SNDPOR>
<SNDPRN>XXXXX01IN</SNDPRN>
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<RCVPRN>xxx</RCVPRN>
<RCVPRT>LS</RCVPRT>
</EDI_DC40>
<xsl:variable name="pid" select="substring(.,1,1)"/>
But in the sxmb_moni the message is red with the error message :" converting to an ALE logical system"
Have you any idea?
With another interface I used a graphic Mapping and the same properties in the directory and it works.
Bye
Stefan

Hi togehter,
it works now, after cpa_cache and sxi_cache.
and and ...
<IDOCTYP>/XXX/018_XXXXX_XIDATEN</IDOCTYP>
<MESTYP>/XXX/018_XXXXX_XIDATEN</MESTYP>
Without: _-...
I would write a blog.
Does know one how that goes here?
Thanks
SDN is great
Stefan

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</class>
</mapping>
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     at org.exolab.castor.xml.Marshaller.marshal(Marshaller.java:1814)
     at org.exolab.castor.xml.Marshaller.marshal(Marshaller.java:1825)
     at org.exolab.castor.xml.Marshaller.marshal(Marshaller.java:821)
Please help us to overcome from this problem?
Thanks,
Dileep

for your ref here is what i think the basic mapping file would look like
<class name="Person">
<map-to xml="person"/>
<field name="name" type="string">
<bind-xml name="name" node="attribute" />
</field>
<field name="age" type="string">
<bind-xml name="age" node="attribute" />
</field>
</class>
<class name="MetaPerson">
<map-to xml="person"/>
<field name="dependents" type="string">
<bind-xml name="dependents" node="attribute" />
</field>
<field name="presentAdd" type="string">
<bind-xml name="present_add " node="attribute" />
</field>
<field name="permanentAdd" type="string">
<bind-xml name="permanent_add " node="attribute" />
</field>
</class>
however i am still not clear as to how i can use the metaperson object in the person class as well as in the mapping file.
hope this gives a better idea abt my problem statement.
Please help me out

ExcelXML mapping---problem with XML maps in Excel sheet

Hi Friends,
I have one issue with ExcelXML mapping in Xcelsius.
The problem is I have designed one dashboard using ExcelXML mapping and everything is working fine but I was afraid that I could not able to find the mappings which were embedded in Excel.It happened many times.What I was doing is everytime Im re-mapping.I could be a big problem for me to do this procedire for everytime.How to recover my XML maps into excel sheet.Can anyone please provide the solution to achieve this.

Shouldnt it be equivalent ? I mean, as far as I know the ns0: shouldnt be a problem
when you have a namespace in the message then you need to associate it with some prefix....since ns0 (or any other prefix) is not present you are getting the error....having the namespace but not ns0 is the problem.
XMLAnonymizer bean may help you to add the namespace prefix...

Excel XML map problem with numbers.

Hi Xcelsius gurus,
Once again i need your help.
I use Excel XML maps to get data into my embedded spreadsheet, my data are current year sales per month like below:
115.450,36
220.336,20
189.222,56
200.005,48
just numbers.
After inserting the xml data i am not able to use them. No chart, No list, No gause can present my data. Like there is no data.
I realised that after mapping the XML, spreadsheet's cells showing an error, when i click on error icon there is an option to convert data to number, that fix the problem.
What could i do to solve this issue? Is there any problem with my XML file?
Pease help me with this one, i am confused.

Hi:
   what is your xml file format?
   you can try some ordinary xml format instead, here is a example:
   <?xml version="1.0" encoding="ISO-8859-1"?>
<bookstore>
<book catalog="Programming">
<title lang="en">C++ Programming Language</title>
<author>Bjarne Stroustrup</author>
<year>998</year>
<price>198.0</price>
</book>
<book catalog="Networking">
<title lang="en">TCP/IP Illustrated</title>
<author>Richard Stevens</author>
<year>1996</year>
<price>156.0</price>
</book>
</bookstore>

Using XML sequence Tag with updatexml() errors when called as function?

Hello,
I'm having a very difficult time with this error. I was hoping someone could shed some light onto why this is happening. It is 100% reproducible on my end. When I run the problematic code, I am given a "ORA-03113: end-of-file on communication channel" which is actually due to
"ORA-07445: exception encountered: core dump [kolasaRead()+66] [SIGSEGV] [ADDR:0x64] [PC:0x2250968] [Address not mapped to object] []"
Set up scripts:*
CREATE TABLE test (id   NUMBER
                        ,xml XMLTYPE);
CREATE OR REPLACE FUNCTION test_replace_metadata(p_metadata                 IN XMLTYPE)
      RETURN XMLTYPE
   IS
      l_metadata_xml                          XMLTYPE;
   BEGIN
      l_metadata_xml := p_metadata;
      SELECT UPDATEXML(l_metadata_xml
                      ,'/DICOM_OBJECT/*[@tag="00100020"]/text()'
                      ,'1010101010101010101'
                      ,'xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0"')
        INTO l_metadata_xml
        FROM DUAL;
      RETURN l_metadata_xml;
END test_replace_metadata;
To select the resulting rows:*
select rownum
           ,id
           ,xml
           --,var
           ,TO_CHAR(EXTRACTVALUE(xml
               ,'/DICOM_OBJECT/*[@name="Patient ID"]'
               ,'xmlns=http://xmlns.oracle.com/ord/dicom/metadata_1_0')) "PatientID"
       from test
      order by rownum desc
The following code works:*
DECLARE
l_metadata VARCHAR2(32767)
            := '<?xml version="1.0"?>
<DICOM_OBJECT xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.oracle.com/ord/dicom/metadata_1_0 http://xmlns.oracle.com/ord/dicom/metadata_1_0">
<LONG_STRING tag="00100020" definer="DICOM" name="Patient ID" offset="816" length="6">#00100020#</LONG_STRING>
<SEQUENCE xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0" tag="00082218" definer="DICOM" name="Anatomic Region Sequence" offset="694" length="76">
                    <ITEM>
                      <SHORT_STRING tag="00080100" definer="DICOM" name="Code Value" offset="722" length="8">T-AA000</SHORT_STRING>
                      <SHORT_STRING tag="00080102" definer="DICOM" name="Coding Scheme Designator" offset="738" length="4">SRT</SHORT_STRING>
                      <LONG_STRING tag="00080104" definer="DICOM" name="Code Meaning" offset="750" length="4">Eye</LONG_STRING>
                    </ITEM>
                  </SEQUENCE>
</DICOM_OBJECT>';
l_metadata_xml XMLTYPE;
BEGIN
     l_metadata_xml := xmltype(l_metadata, 'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
      SELECT UPDATEXML(l_metadata_xml
                      ,'/DICOM_OBJECT/*[@name="Patient ID"]/text()'
                      ,'dayodayodayo'
                      ,'xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0"')
        INTO l_metadata_xml
        FROM DUAL;
   INSERT INTO test(id
                    ,xml)
       VALUES (7
              ,l_metadata_xml);
END;
This code doesn't work, and gives the error mentioned:*
DECLARE
l_metadata VARCHAR2(32767)
            := '<?xml version="1.0"?>
<DICOM_OBJECT xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.oracle.com/ord/dicom/metadata_1_0 http://xmlns.oracle.com/ord/dicom/metadata_1_0">
<LONG_STRING tag="00100020" definer="DICOM" name="Patient ID" offset="816" length="6">#00100020#</LONG_STRING>
<SEQUENCE xmlns="http://xmlns.oracle.com/ord/dicom/metadata_1_0" tag="00082218" definer="DICOM" name="Anatomic Region Sequence" offset="694" length="76">
                    <ITEM>
                      <SHORT_STRING tag="00080100" definer="DICOM" name="Code Value" offset="722" length="8">T-AA000</SHORT_STRING>
                      <SHORT_STRING tag="00080102" definer="DICOM" name="Coding Scheme Designator" offset="738" length="4">SRT</SHORT_STRING>
                      <LONG_STRING tag="00080104" definer="DICOM" name="Code Meaning" offset="750" length="4">Eye</LONG_STRING>
                    </ITEM>
                  </SEQUENCE>
</DICOM_OBJECT>';
l_metadata_xml XMLTYPE;
BEGIN
   l_metadata_xml := xmltype(l_metadata, 'http://xmlns.oracle.com/ord/dicom/metadata_1_0');
   --This is the difference from the above code
   l_metadata_xml := test_replace_metadata(l_metadata_xml);
   INSERT INTO test(id
                    ,xml)
       VALUES (7
              ,l_metadata_xml);
END;
This is the full text of the error message:*
"ORA-03113: end-of-file on communication channel
Process ID: 10847
Session ID: 321 Serial number: 33192"Looking into the trace files, I saw this information (This is from a different occurance, but it has remained the same):
Trace file (omitted)
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /opt/app/oracle/product/11.1.0/db_1/
System name:     Linux
Node name:     (omitted)
Release:     2.6.18-92.el5
Version:     #1 SMP Tue Apr 29 13:16:15 EDT 2008
Machine:     x86_64
Instance name: (omitted)
Redo thread mounted by this instance: 1
Oracle process number: 53
Unix process pid: 22883, image: (omitted)
*** 2009-06-24 13:47:31.198
*** SESSION ID:(omitted)
*** CLIENT ID:(omitted)
*** SERVICE NAME:(omitted)
*** MODULE NAME:(omitted)
*** ACTION NAME:(omitted)
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x64] [PC:0x2250968, kolasaRead()+66]
DDE: Problem Key 'ORA 7445 [kolasaRead()+66]' was flood controlled (0x6) (incident: 70951)
ORA-07445: exception encountered: core dump [kolasaRead()+66] [SIGSEGV] [ADDR:0x64] [PC:0x2250968] [Address not mapped to object] []
ssexhd: crashing the process...
Shadow_Core_Dump = PARTIAL Why is this happening? Also, When I remove the call to the function or if I remove the SEQUENCE element from the xml everything works fine.
Any ideas?
Edited by: rcdev on Jun 25, 2009 2:17 PM - Added code blocks for readability.
Edited by: rcdev on Jun 25, 2009 2:28 PM

In short, something inside Oracle is blowing up that shouldn't be, hence the ORA-7445. I did a search on MetaLink but it didn't turn up anything for your version and the internal function that is blowing up. Given you are on 11.1.0.7, I'm going to assume you have some service contract with Oracle and so can open a SR with them. That would be your best bet for getting it resolved given the internal Oracle error you are encountering.
The next best option would be to post this question on the {forum:id=34} forum given some of the people that watch that forum.

"an XML element was malformed" error with anonymous user

There is no problem with another user but with anonymous user it gives "an XML element was malformed" error when I want to select data from Oracle database using BI_JDBC in VC. I have done the user mapping for the anonymous user like other users. I also give "read" and "end user" permissions for anonymous user in the BI_JDBC connection. For other users, it works. What should I do to use BI_JDBC in VC with anonymous user.
Thanks in advance

Hi Nihat,
we currently facing the same issue, did you found the solution for this, or maybe a workaround for anonymous system access? Thanks for your help!
Kind regards,
Benny

Error in scheduling a mapping with sqlloader ctl file

Hi everyone,
I have been trying to schedule a single mapping which generates sqlloader ctl file. but i get the error
ORA-20001: Begin. initialize complete. workspace set. l_job_audit_execution_id= 20545. ORA-20001: Please check execution object is deployed correctly. ORA-01403: no data found ORA-06512: at "USER7.PMAP_TLOG_JOB", line 180 ORA-20001: Please check execution object is deployed correctly. ORA-01403: no data found
but when i attach this mapping with a process flow it works fine. There is no error.
so my question is in OWB is it a must that we should attach the mapping which generates sqlloader ctl file to a process flow and then schedule it or can we schedule a single mapping which generates sqlloader ctl file and what should be the process to schedule a single mapping which generates sqlloader ctl file?
can anyone please help?
Thanks & Regards
Subhasree

Hi Nawneet,
Any suggestions?
can anybody else also help me in this error???
Regards
Subhasree

Xml mapping with JPA error

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