XML parsing in Stored procedure

Hi friends,
PLease help to resove my issue mentioned below.
I am tring to parse one large xml whic i am getting from calling a webservice.I am reading line by line from the request and storing into a clob variable.
I convert it to xml type for some manipulation after that When i am trying to convert it back to Clob by using getClobVal() data is getting truncated.
Please help how can i resolve this issue

hI,
i AM TRYING TO CALL A WEBSERVICE FROM MY ORACLE STORED PROCEDURE .tHE REQUEST IS LIKE
soap_request:= '<soapenv:Envelope xmlns:soapenv="" xmlns:web="">
<soapenv:Header/>
<soapenv:Body xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="">
<web:getEmpInfo>
<Param>
<WST/>
<EmpId>'I am giving certain value here'</EmpId>
<requestId/>
</Param>
</web:getEmpInfo>
</soapenv:Body>
</soapenv:Envelope>';
http_req:= utl_http.begin_request
( 'Webservice URL'
, 'POST'
, 'HTTP/1.1'
utl_http.set_header(http_req, 'Content-Type', 'text/xml'); -- since we are dealing with plain text in XML documents
utl_http.set_header(http_req, 'Content-Length', length(soap_request));
utl_http.set_header(http_req, 'SOAPAction', ''); -- required to specify this is a SOAP communication
utl_http.write_text(http_req, soap_request);
http_resp:= utl_http.get_response(http_req);
utl_http.read_text(http_resp, soap_respond);// soap_request CLOB;
// soap_respond CLOB;
utl_http.end_response(http_resp);
resp:= XMLType.createXML(soap_respond);// resp XMLType;
My REsponse from webservice is in the following format
<soapenv:Body><p663:getEmpInfoResponse xmlns:p663=""><getEmpInfoReturn><errorLevel>1</errorLevel>
<returnMessage>.</returnMessage>
<returnSet>My result is in here</returnSet>
After that i am
EXTRACTING the resp for getting result set
Then to get canonical XML format(I mean with out any < or> symbols i am using
respStr := resp.getClobVall();
respStr := DBMS_XMLGEN.CONVERT(respStr,1);
resp:= XMLType.createXML(respStr);
parser := xmlparser.newParser;
xmlparser.parseBuffer(parser, respStr);
doc := xmlparser.getDocument(parser);
xmlparser.freeParser(parser);
The data is getting truncated when resp.getClobVall() is calling
. So end tag missing error is coming while parsing.
I am using 9i version oracle. XML that is returning from webservice is more that 80K
Edited by: user9138090 on Feb 12, 2010 10:55 AM
Edited by: user9138090 on Feb 12, 2010 11:16 AM
Edited by: user9138090 on Feb 12, 2010 12:02 PM
Edited by: user9138090 on Feb 12, 2010 12:03 PM

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import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
InputStream is = getXMLAsInputStream(xml);
try {
DocumentBuilderFactory factory =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document document = builder.parse( is );
... parse the document ....
catch (FactoryConfigurationError e) {
// unable to get a document builder factory
We are running on 9.2.0.6, HP-UX 64-bit. At first, when we would attempt to run the proc, a database hang would occur; now after attempting to install using loadjava jars for xerces2.6: ORA-29532: Java call terminated by uncaught Java exception:
javax.xml.parsers.FactoryConfigurationError: Provider
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl not found)
The vendor says that the errors we are getting when running are not due to any dependency on xerces or jre1.4, and that we need to "install Oracle XML support", but I'm not certain what this means (I cannot find any documentation on what to install). I believe that there are jars that need to be loaded into the database to support the XML parsing, as jre1.3 does not include built-in XML support, and Oracle 9.2.0.6 uses jre1.3.
So...does anyone have any thoughts as to how to resolve the missing references? Is there a way to "install Oracle XML support", or is it to install the necessary jars?
Thanks,
Candi

Candi,
The following resources should be of help:
Oracle9i Database Release 2 (9.2) Documentation Library
In particular, check out the following:
Java Developer's Guide
Java Stored Procedures Developer's Guide
XML API Reference - XDK and Oracle XML DB
XML Database Developer's Guide - Oracle XML DB
XML Developer's Kits Guide - XDK
If that doesn't help, then try the following:
OracleJVM and Java Stored Procedures
XML Technology Center
Good Luck,
Avi.

Java Stored Procedure SAXParser XML Schema Validation

Using Oracle XML Developers Kit 10.2.0.2.0 - Production.
Attempting to validate using XML Schema in a Java stored procedure with the code:
               if ( schemaDoc == null )
                    // Obtain default connection
                    Connection conn = new OracleDriver().defaultConnection();
                    OraclePreparedStatement stmt = (OraclePreparedStatement) conn.prepareStatement("SELECT XmlDocObj FROM XmlDoc WHERE XmlDocNbr = 2");
                    OracleResultSet rset = (OracleResultSet)stmt.executeQuery();
                    if ( rset.next() )
                         // get the XMLType
                         XMLType schemaXml = (XMLType)rset.getObject(1);
                         XSDBuilder builder = new XSDBuilder();
                         XMLSchema schemaDoc = (XMLSchema)builder.build(new InputSource(schemaXml.getInputStream()));
               if ( inst == null )
                    inst = new ValidateCoreRequest();
               ErrorHandlerImpl handler = inst.getNewErrorHandler();
SAXParser saxParser = new SAXParser();
saxParser.setXMLSchema(schemaDoc);
saxParser.setValidationMode(XMLParser.SCHEMA_VALIDATION);
saxParser.setErrorHandler(handler);
saxParser.parse(new InputSource(new StringReader(docStr)));
if( handler.validationError )
                    errorMsg[0] = handler.saxParseException.getMessage().substring(0, Math.min(199, handler.saxParseException.getMessage().length()));
Never reports validation errors in the XML. Although the XDK Programmers Guide states "...you can use
the oracle.xml.parser.schema.XSDBuilder class to build an XML schema and
then configure the parser to use it by invoking the XMLParser.setXMLSchema()
method. In this case, the XML parser automatically sets the validation mode to
SCHEMA_STRICT_VALIDATION and ignores the schemaLocation and
noNamespaceSchemaLocation attributes." No validation seems to occur. I have tried to set an xsi:noNamespaceSchemaLocation attribute on the root XML node, but this results in URL errors if the URL is not valid or schema build errors if the URL is valid, but does not point to a real location.
It appears that without a schema location attribute, no schema validation occurs. Using setXMLSchema() with a database source does not seem to cause the schema location attributes to be ignored. At least for Java stored procedures.
Does XML Schema validation work in the database for externally referenced schemas?
Thank You,
Art

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Jan Vissers ([email protected]):
I have two schemas A and B. A contains a java stored procedure which calls a java stored procedure stored in B. Upon resolving the "A" Java Stored Procedures I get the following error:
ORA-29545: badly formed class: at offset 3093 of Adapter.TFADPBeschikbaarheid.sendAanvraag expecting a class-oracle.xml.parser.v2.XMLDocument but encountered a class-oracle.xml.parser.v2.XMLDocument.
... Question:
it is expecting something which it has in fact encountered... SO!!!! What is the error.
Thx,
Jan<HR></BLOCKQUOTE>
Try this:
Edit your XSU installation script located on lib directory of Oracle XSU's distribution:
Find the line:
loadjava -r -v -u $USER_PASSWORD xmlparserv2.jar
Replace by:
loadjava -r -v -g public -u $USER_PASSWORD xmlparserv2.jar
And installs your Oracle XSU again.
Best regards, Marcelo.

Sending '?' in XML tag to Oracle Stored Procedure

I have a situation that I cannot find the answer to why it is happening.
I am sending an XML data type to an oracle stored procedure. In one of the fields, I need to allow the '?' character to be sent.
<ADDITIONALINFO>This is where I want ? to be</ADDITIONALINFO>
When I send the info to the stored procedure I get the following error: ORA-31011: XML parsing failed ORA-19202: Error occurred in XML processing
LPX-00216: invalid character 191 (0xBF)Error at line 19
What I do not understand is that the character (0xBF) is the inverted question mark �
I have been able to get around the issue by changing the question mark to ? which is the decimal format for the question mark and the query works.
ie: <ADDITIONALINFO>This is where I want &#63 to be</ADDITIONALINFO>
Is there another delimiter that is needed for '?' like what is needed to print the & in & fashion?
Any insight to this issue would be helpful.

There are some characters that you cannot use in an XML document, but I was not aware that the questionmark was one of them. As far as I know, you need to transform the characters '&', '<' and '>', and any character with a code higher than 127. The fact that the question mark is turned into an upside down questionmark seems to be some weird functionality.

Best method to transfer large strings (XML data) to/from stored procedure

Hi!
I'm trying to call a PL/SQL procedure from Java. The procedure inputs a string (XML) that is parsed, and returns a result string (also XML).
Typical size of the string is 5kb -> 1mb.
I can see two possible solutions:
1) String / LONG
2) CLOB (Using DMBS_LOB.createTemporary and getting a CLOB locator and passing the locator to the stored procedure)
Does anyone have other suggestions?
What is the fastest method for transferring XML structures from to and from stored procedures?
Anders

Anders,
I would say it depends on your requirement. Both the methods have some advantages and disadvantages.
Using a CLOB means that you have to use vendor specific libraries but this is more extendible and I fast too.
Using String/Long will be more portable in the long run but again you lose on speed/performance.
Just a doubt of mine... If I got it correct, you are transforming one XML to another XML based on some conditions. Why dont you use XSL and XSL StyleSheet Processor packaged with XDK for this? I think this would be the fastest way.
Hope this helps.

XML parsing in Stored procedure

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