Strip empty namesapces from XML using Xquery/Xslt- xmlns=""

Hi,
Can you please tell me what is the xquery/xslt snippet to remove empty namespaces exist in an xml file.
<date xmlns="">20111006</date>
to
<date>20111006</date>
Thanks.
Edited by: user12679330 on 05-Oct-2011 23:32
Edited by: user12679330 on 06-Oct-2011 00:06

here is the xsl snippet, after struggling for more time, did it.. Thanks All
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@* | node()">
<xsl:if test="name()!='date'">
<xsl:copy>
<xsl:apply-templates select="@* | node()" />
</xsl:copy>
</xsl:if>
<xsl:if test="name()='date'">
<date>
<xsl:value-of select="."/>
</date>
</xsl:if>
</xsl:template>
</xsl:stylesheet>

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How to remove empty lines from xml files after removing nodes from document

<pre>
Hi
<b>i have xml document, which is shown below
after removing some nodes from the document ,i am getting empty lines in place of removed nodes,how to resolve this and get the proper xml document without any errors</b>
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE Message SYSTEM "TRD01.dtd">
<Message>
<Header>
<CounterPartyType>CLIENT</CounterPartyType>
<CreationTime>20134455</CreationTime>
<ErrorCode>363 </ErrorCode>
<ErrorEnterPriseId>N</ErrorEnterPriseId>
<ErrorStatus>1</ErrorStatus>
<ErrorSystemId>STL</ErrorSystemId>
<ErrorTimes>31</ErrorTimes>
<MessageType>T</MessageType>
<RecipientEnterpriseId>N</RecipientEnterpriseId>
<RecipentSystemId>EXM</RecipentSystemId>
<Remarks>REMARSK</Remarks>
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</Message>
<ErrorCode>363 </ErrorCode>
<ErrorEnterPriseId>NIHK</ErrorEnterPriseId>
<ErrorStatus>1</ErrorStatus>
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Object result5 = expression5.evaluate(doc, XPathConstants.NODE);
Node node5 = (Node) result5;
node5.getParentNode().removeChild(node5);
XPathExpression expression6 = xpath.compile(xmlpath6);
Object result6 = expression6.evaluate(doc, XPathConstants.NODE);
Node node6=(Node) result6;
node6.getParentNode().removeChild(node6);
XPathExpression expression7 = xpath.compile(xmlpath7);
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TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
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t.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
the xml output i am getting is
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Message>
<Header>
<CounterPartyType>CLIENT</CounterPartyType>
<CreationTime>20134455</CreationTime>
<MessageType>TRD01</MessageType>
<RecipientEnterpriseId>N</RecipientEnterpriseId>
<RecipentSystemId>STL</RecipentSystemId>
<Remarks>REMARSK</Remarks>
<SenderEnterpriseId>N</SenderEnterpriseId>
<SenderSystemId>T</SenderSystemId>
</Header>
</Message>
<b>could you please let me know how to avoid empty lines in the xml doucment output</b>
this is the method i am using to get the result
public void ValidateRecord(String xml){
try{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder db = factory.newDocumentBuilder();
//parse file into DOM
/*DOMParser parser = new DOMParser();
parser.setErrorStream(System.err);
parser.setValidationMode(DTD_validation);
parser.showWarnings(true);*/
System.out.println ("HI THIS xml is validation "+xml);
Resolver res = new Resolver();
db.setEntityResolver(res);
Document doc = db.parse(new InputSource(new StringReader(xml)));
XPathFactory xpf = XPathFactory.newInstance();
XPath xpath = xpf.newXPath();
// XPathExpression expression = xpath.compile("//A/B[C/E/text()=13]");
String xmlpath="/Message/Header/CounterPartyType/text()";
String xmlpath1="/Message/Header/RecipentSystemId/text()";
String xmlpath2="/Message/Header/ErrorSystemId/text()";
XPathExpression expression = xpath.compile(xmlpath);
XPathExpression expression1 = xpath.compile(xmlpath2);
Object result = expression.evaluate(doc, XPathConstants.NODE);
Object result1 = expression1.evaluate(doc, XPathConstants.NODE);
Node node = (Node) result;
Node node1 = (Node) result1;
System.out.println("the values of the string is " +node.getNodeValue());
System.out.println("the values of the string is " +node1.getNodeValue());
// for (int i = 0; i < nodes.getLength(); i++) {
//System.out.println(nodes.item(i).getNodeValue());
// CAHNGING THE RECEIPENT NODE
XPathExpression expression2 = xpath.compile(xmlpath1);
Object result2 = expression2.evaluate(doc, XPathConstants.NODE);
Node node2 = (Node) result2;
System.out.println(node2);
node2.setNodeValue(node1.getNodeValue());
System.out.println(node2);
//removing the nodes from document
String xmlpath3="/Message/Header/ErrorCode";
String xmlpath4="/Message/Header/ErrorEnterPriseId";
String xmlpath5="/Message/Header/ErrorStatus";
String xmlpath6="/Message/Header/ErrorSystemId";
String xmlpath7="/Message/Header/ErrorTimes";
XPathExpression expression3 = xpath.compile(xmlpath3);
Object result3 = expression3.evaluate(doc, XPathConstants.NODE);
Node node3 = (Node) result3;
node3.getParentNode().removeChild(node3);
XPathExpression expression4 = xpath.compile(xmlpath4);
Object result4 = expression4.evaluate(doc, XPathConstants.NODE);
Node node4 = (Node) result4;
System.out.println("node value");
System.out.println(node4.getParentNode().getNodeName());
node4.getParentNode().removeChild(node4);
XPathExpression expression5 = xpath.compile(xmlpath5);
Object result5 = expression5.evaluate(doc, XPathConstants.NODE);
Node node5 = (Node) result5;
node5.getParentNode().removeChild(node5);
XPathExpression expression6 = xpath.compile(xmlpath6);
Object result6 = expression6.evaluate(doc, XPathConstants.NODE);
Node node6=(Node) result6;
node6.getParentNode().removeChild(node6);
XPathExpression expression7 = xpath.compile(xmlpath7);
Object result7 = expression7.evaluate(doc, XPathConstants.NODE);
Node node7=(Node) result7;
node7.getParentNode().removeChild(node7);
// Node b13Node = (Node) expression.evaluate(doc, XPathConstants.NODE);
//b13Node.getParentNode().removeChild(b13Node);
doc.normalize();
doc.normalizeDocument();
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.setOutputProperty(OutputKeys.INDENT, "yes");
t.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
t.setOutputProperty(OutputKeys.METHOD,"xml");
t.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
t.transform(new DOMSource(doc), new StreamResult(System.out));
catch (Exception e) {
e.printStackTrace();
System.out.println(e.getMessage());
</pre>
Edited by: user12185243 on Apr 6, 2013 6:38 AM
Edited by: user12185243 on Apr 6, 2013 6:41 AM
Edited by: user12185243 on Apr 6, 2013 6:43 AM
Edited by: user12185243 on Apr 6, 2013 6:45 AM
Edited by: user12185243 on Apr 6, 2013 9:00 AM

either this way we can do this
1)
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
<b> factory.setIgnoringElementContentWhitespace(true); </b>
DocumentBuilder db = factory.newDocumentBuilder();
or
2)
java.io.StringWriter sw = new java.io.StringWriter();
StreamResult sr = new StreamResult(sw);
t.transform(new DOMSource(doc), sr);
String xml1 = sw.toString().trim();
<b> xml1=xml1.replaceAll("\\s",""); </b>
System.out.println(xml1.trim());

Remove element from xml using dom.

i want to remove an element from an xml file using dom.
i remove the element but the whole content of the file is also deleted.
how can i rewrite the file.

vij_ay wrote:
subject :Remove element from xml,but if empty element in input file then output should be <tag></tag>, not like <tag.xml/>I assume you mean <tag/> but why do you want this? Any application that will not accept this valid XML construct is flawed and a bug report should be raised against it.

How to remove empty tags from XML

Hello,
I have a XML file which contains some empty tags and some values with "?". I need to remove all empty tags and tags which have a value "?".
Sample Data:
<a>
<b></b>
<c> Hello </c>
<d>world ?</d>
<e>oracle</e>
</a>
Expected result:
<a>
<c> Hello </c>
<e>oracle</e>
</a>
Thank you for your time.
Thanks,
Edited by: 850749 on Apr 7, 2011 6:25 PM

Dear Odie,
May I make your example a bit more complicated by adding an additional complexType, please:
---Original ----
<DEPT>
<EMPID>1</EMPID>
<EMPNAME>Martin Chadderton</EMPNAME>
<SALARY>??</SALARY>
<SALARYq></SALARYq>
</DEPT>
----- New ----
<DEPT>
<EMPID>1</EMPID>
<EMPNAME>Martin Chadderton</EMPNAME>
<SALARY>??</SALARY>
<SALARYq></SALARYq>
<EMPLMNT_HISTORY>
<DEVISION>1</DEVISION>
<FROM_DATE>2011-01-01 </FROM_DATE>
<TO_DATE></TO_DATE>
</EMPLMNT_HISTORY>
</DEPT>
Your solution works perfectly for <SALARY>, but how would you suggest also to deal with <TO_DATE> ?
Massive thanks for your help!
N.B. Just to emphasise, in my case I have 3 levels (complexType > complexType > complexType) and many elements and I would like to know if there is any generic option to say
to remove all the empty elements from the result, as it causes to the SSJ (Systinet) Webservice to crash.

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Hi,
I am trying to read an xml that contains xsl stylesheet PI using DOMParser. The parse() method reads the entire contents of the XML except the PI instruction. Below is the XML I am using to read
<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet href="../../../lang/en-us/style0/usc_profile.xsl" type="text/xsl"?>
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For the above process, I parse the input XML using DOMParser and update the elements (some internal elements). While I view the final XML that would be passed to the stream, I found the <?xml-stylesheet... PI is missing.
I somehow managed using a temp fix by doing the below. I manually pulled the PI using document.getFirstChild().getNodeValue() and reconstructed the PI and inserted it to the outgoing XML. This needs to be done every time. This might run into problems when more than one PI is used in the XML.
If the parsed XML could get the PI along with it the above problem could be resolved.
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Hi,
I have a CSV file, I need to count the total number of lines in that file. This I have to use in OSB. My requirement is I have to count total no of lines in the $body file (CSV/flat file) and subtract header and footer lines from it.
EX:
header,1, @total_no_of_detal@
detail,1
detail,2
detail,3
detail,n
footer, 1
If suppose i have 10 detail lines, and I am getting body of the file as shown above,
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header,1, *10*
detail,1
detail,2
detail,3
detail,n
footer, 1
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Edited by: user12679330 on Aug 2, 2011 2:34 AM

I would suggest you to use MFL to convert the file into XML when you read it and then you can count the detail elements within the XML and update the values in Header element before writing the file again in flat file format again using MFL.
You can read the documentation of Format Builder utility which is used to define MFL here:
http://download.oracle.com/docs/cd/E21764_01/doc.1111/e15866/part_fb.htm
Alternatively, another approach is the read the whole flat file as a text string and then doing needed manipulations to get what you need. If you want to do it like this then you will need to consider following things:
1. Is the file in DOS format or Unix format? (To know the End of line character in use)
2. Does the file contain an end of line at the end of file? (whether there is an end of line char at the end of data of footer record)
Once you know above, you can try an xquery like following:
let $intermediateXML :=
<Root>
for $a in (tokenize($in, 'EOL'))
return
if (string-length($a) > 0)
then
<record>{$a}</record>
else ()
</Root>
let $count := count($intermediateXML/record)
let $outXML :=
<OutRoot>
for $i in 1 to $count
return
if (data($i) = 1)
then
<Record>{concat($out, $intermediateXML/record[$i]/text(), ',Count=',($count)-2)}</Record>
else
<Record>{concat($out, $intermediateXML/record[$i]/text())}</Record>
</OutRoot>
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Hi,
<DLList xmlns="http://www.test.com/integration/feed" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Bagalkote</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Devengiri</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
</DLList>
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How to remove the namespace using java to get the below xml
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<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Bagalkote</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Devengiri</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
</DLList>
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Thanks

OK, here goes :
For the example, I'll use a TB_DISTRICT table with the following structure :
create table tb_district (
sr_no number(3),
district_name varchar2(100)
);loaded with data from this page :
http://india.gov.in/knowindia/districts/andhra1.php?stateid=KA
and this XML document (one additional record compared to the one you posted) :
<DLList xmlns="http://www.test.com/integration/feed" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Bagalkote</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Devengiri</ForecastName>
<Humidity>89.9</Humidity>
</Weather>
<Weather>
<StateName>Karnataka</StateName>
<ForecastName>Dharwad</ForecastName>
<Humidity>70.1</Humidity>
</Weather>
</DLList>In order to access the XML, I'll also use this Oracle directory object :
create directory test_dir as 'D:\ORACLE\test';Final relational tables are :
create table BUSINESS_TABLE
STATE         VARCHAR2(30),
DISTRICT_NAME VARCHAR2(30),
HUMIDITY      NUMBER
);and
create table REJECT_TABLE
STATE         VARCHAR2(30),
DISTRICT_NAME VARCHAR2(30),
HUMIDITY      NUMBER,
ERROR_MESSAGE VARCHAR2(500)
);With XMLTable function, we can easily break the XML into relational rows and columns ready to use for DML :
SQL> alter session set nls_numeric_characters=". ";
Session altered
SQL>
SQL> SELECT *
2 FROM XMLTable(
3    XMLNamespaces(default 'http://www.test.com/integration/feed'),
4    '/DLList/Weather'
5    passing xmltype(bfilename('TEST_DIR','test.xml'), nls_charset_id('CHAR_CS'))
6    columns
7      state         varchar2(30) path 'StateName'
8    , district_name varchar2(30) path 'ForecastName'
9    , humidity      number       path 'Humidity'
10 )
11 ;
STATE                          DISTRICT_NAME                    HUMIDITY
Karnataka                      Bagalkote                            89.9
Karnataka                      Devengiri                            89.9
Karnataka                      Dharwad                              70.1
Then with a multitable insert, we load both the business table and the reject table (if the district name does not exist in TB_DISTRICT) :
SQL> INSERT FIRST
2    WHEN master_district_name IS NOT NULL
3      THEN INTO business_table (state, district_name, humidity)
4                VALUES (state, district_name, humidity)
5    ELSE INTO reject_table (state, district_name, humidity, error_message)
6              VALUES (state, district_name, humidity, 'Invalid district name')
7 WITH xml_data AS (
8    SELECT *
9    FROM XMLTable(
10      XMLNamespaces(default 'http://www.test.com/integration/feed'),
11      '/DLList/Weather'
12      passing xmltype(bfilename('TEST_DIR','test.xml'), nls_charset_id('CHAR_CS'))
13      columns
14        state         varchar2(30) path 'StateName'
15      , district_name varchar2(30) path 'ForecastName'
16      , humidity      number       path 'Humidity'
17    )
18 )
19 SELECT x.*
20       , t.district_name as master_district_name
21 FROM xml_data x
22       LEFT OUTER JOIN tb_district t ON t.district_name = x.district_name
23 ;
3 rows inserted
SQL> select * from business_table;
STATE                          DISTRICT_NAME                    HUMIDITY
Karnataka                      Dharwad                              70.1
SQL> select * from reject_table;
STATE                          DISTRICT_NAME                    HUMIDITY ERROR_MESSAGE
Karnataka                      Bagalkote                            89.9 Invalid district name
Karnataka                      Devengiri                            89.9 Invalid district name

How to retrieve information from XML using servlets

Hi
I have a scenario like this
File-->XI-->J2ee application(HTTP Receiver adapter)
I want to know how XI sends xml file as a query string file name?
What ever may be the case i just need to retrieve the information from Request object and display the same in browser(JSP).How to do that, I am totally confused, please anyone help me!
Code help is highly rewarded.
Thanx

Hi Rajesh!
I have tried your code. But some where i went wrong. Please correct me: I am using NWDS2.0.9
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
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<web-app>
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        <servlet-class>com.quinnox.DisplayRes</servlet-class>
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my application.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
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        <web>
            <web-uri>HttpReceiver.war</web-uri>
            <context-root>/HttpReceiver</context-root>
        </web>
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</application>
and my servlet code:
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.Writer;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
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import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.xml.sax.EntityResolver;
import org.xml.sax.SAXException;
import com.sun.java_cup.internal.parser;
import com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl;
public class DisplayRes extends HttpServlet {
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Please tell me how to display in servlet.
If it is better to display in a browser. Please send me the code.
Thanks

Import data from xml using ssis

Using Sql Server 2012 STD edition, SSDT (Visual Studio 2010 shell, .net framework 4.0.3 SP1
I am trying to import data from an xml file using ssis.
Here are the three options I tried and none worked. Please see errors that I encountered in all options and let me know what I can do to import this data in sql
server.
I created a new ssis project with an ssis package. I pulled a data flow task on the control flow. On the data flow tab I pulled an xml source and a sql server
destination. Now I tried to configure the xml source task in the the following three ways, but none worked.
1. I browse the xml file to set xml location. Browse the xsd file to set xsd location, then click ok. I get the following error:
HRESULT errorcode 0xC02090CF from a method call. There was an error setting up the mapping. Undefined complex Type 'gml_V4.1_Release:PolygonType'
is used as a base for complex type extension
2. I browse the xml file to set xml location. check "Use inline schema" Click ok. Error:
HRESULT errorcode 0xC020929E from a method call. The xml source adapter was unable to process the XML data. Multiple inline schemas are not supported.
3.I browse the xml file to set xml location. Click "Generate XSD". Error: The supplied xml instance is a schema or contains inline schema. The
class cannot infer a schema for a schema.
Thank you for your help.

Hi ,
I think something problem with the XSD file i too faced somewhat same problem, i have created XSD file from the following link and tried in my package it has worked why don't u try to create xsd file from following link and try again once.
http://xmlgrid.net/xml2xsd.html
Niraj Sevalkar

Remove tags from XML using transformation

Can anybody tell me how to remove empty tags using xsl transformation.
<App_Data App="MOD" Name="Metadata_Id" Value="SP1282"/>
<App_Data App="MOD" Name="Metadata_Spec_Major_Version" Value=""/>
<App_Data App="MOD" Name="Metadata_Spec_Minor_Version" Value=""/>
My XML will have tags similar to above. My requirement is to remove all tags having attribute Value="". How can i achieve this using transformation.
Thanks
Krish

You need to add the xsi:nil="true" attribute to your xsl-construct to be able to ommit the xml-element which are empty.
To be able to do this you need to add a choose-when-otherwise xsl construct inside your mapping file to test for ""-values.
The xsi:nill='true' isn't supported in the transform-activity yet, you need to add this attribute manually inside your xsl-mapping file.
Kind regards,
Nathalie

Problem inserting into DB from XML using XSQL

Hi everyone!
I try to load an XML document into a DB table, for the moment i only get access to a MySQL DB server, but i hope to use ORACLE soon. My problem is the next one:
when i try to execute an insert query against the DB server it always fails, i get no problem doing another operation like select and so on. I have try in several ways:
1. From a XSQL page using the tags xsql:insert-request, in the case the error looks like:
Action xsql:insert-request
Message org.gjt.mm.mysql.jdbc2.Connection
2. I also have try the MoreoverIntoNews java examples, and the problem seem similar:
Exception in thread "main" oracle.xml.sql.OracleXMLSQLException:
org.gjt.mm.mysql.jdbc2.Connection
at oracle.xml.sql.dml.OracleXMLSave.saveXML(OracleXMLSave.java:1967)
at oracle.xml.sql.dml.OracleXMLSave.insertXML(OracleXMLSave.java:1060)
at MoreoverIntoNewsstory.main(MoreoverIntoNewsstory.java:43)
How can i fix this problem?
I also have realize that when i remove from the CLASSPATH the file "classes12.zip" then i
get next exception:
java.lang.NoClassDefFoundError: oracle/sql/CLOB
Then it seems that the XML-SQL utilities (XSU) are only to work with Oracle and not with other DB engine.
Thanks in advance.
Marcos.

Is there a solution to this problem? Does anyone have any suggestions?

Extracting data from XML using xmltype and extract

Hello all,
I want to write a pl/sql functions that takes a clob as an input and return a some data extracted from the data passed into it.
the input will be an xml similar to the following:
<FIXML xsi:schemaLocation="http://www.finacle.com/fixml executeFinacleScript.xsd" xmlns="http://www.finacle.com/fixml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <Header>
        <ResponseHeader>
            <RequestMessageKey>
                <RequestUUID>IVR201306180841060310000000000000000</RequestUUID>
                <ServiceRequestId>executeFinacleScript</ServiceRequestId>
                <ServiceRequestVersion>10.3</ServiceRequestVersion>
                <ChannelId>IVR</ChannelId>
            </RequestMessageKey>
            <ResponseMessageInfo>
                <BankId>01</BankId>
                <TimeZone></TimeZone>
                <MessageDateTime>2013-06-18T05:36:55.918</MessageDateTime>
            </ResponseMessageInfo>
            <UBUSTransaction>
                <Id/>
                <Status/>
            </UBUSTransaction>
            <HostTransaction>
                <Id/>
                <Status>SUCCESS</Status>
            </HostTransaction>
            <HostParentTransaction>
                <Id/>
                <Status/>
            </HostParentTransaction>
            <CustomInfo/>
        </ResponseHeader>
    </Header>
    <Body>
        <executeFinacleScriptResponse>
            <ExecuteFinacleScriptOutputVO>
                <executeFinacleScript_customData>
                    <DataCategory>ACC</DataCategory>
                    <New_Data>0001019300101001</New_Data>
                </executeFinacleScript_customData>
            </ExecuteFinacleScriptOutputVO>
        </executeFinacleScriptResponse>
    </Body>
</FIXML>'
I want to extract the value of new_data.
I wrote the following anonymous block to test the code :
declare
xparam xmltype;
v_xpath varchar2(500);
begin
xparam:=xmltype('<FIXML xsi:schemaLocation="http://www.finacle.com/fixml executeFinacleScript.xsd" xmlns="http://www.finacle.com/fixml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <Header>
        <ResponseHeader>
            <RequestMessageKey>
                <RequestUUID>IVR201306180841060310000000000000000</RequestUUID>
                <ServiceRequestId>executeFinacleScript</ServiceRequestId>
                <ServiceRequestVersion>10.3</ServiceRequestVersion>
                <ChannelId>IVR</ChannelId>
            </RequestMessageKey>
            <ResponseMessageInfo>
                <BankId>01</BankId>
                <TimeZone></TimeZone>
                <MessageDateTime>2013-06-18T05:36:55.918</MessageDateTime>
            </ResponseMessageInfo>
            <UBUSTransaction>
                <Id/>
                <Status/>
            </UBUSTransaction>
            <HostTransaction>
                <Id/>
                <Status>SUCCESS</Status>
            </HostTransaction>
            <HostParentTransaction>
                <Id/>
                <Status/>
            </HostParentTransaction>
            <CustomInfo/>
        </ResponseHeader>
    </Header>
    <Body>
        <executeFinacleScriptResponse>
            <ExecuteFinacleScriptOutputVO>
                <executeFinacleScript_customData>
                    <DataCategory>ACC</DataCategory>
                    <New_Data>0001019300101001</New_Data>
                </executeFinacleScript_customData>
            </ExecuteFinacleScriptOutputVO>
        </executeFinacleScriptResponse>
    </Body>
</FIXML>');
v_xpath:='//New_Data/text()';-
dbms_output.put_line(xparam.EXTRACT(v_xpath).GETSTRINGVAL());
end;
but I get the following Error:
dbms_output.put_line(xparam.EXTRACT(v_xpath).GETSTRINGVAL());
end;
Error at line 1
ORA-30625: method dispatch on NULL SELF argument is disallowed
ORA-06512: at line 46
the problem is that when I remove : xmlns="http://www.finacle.com/fixml" attribute from the root node the code works correctly.
of course , I can simply use replace to remove it, but I want to know what is causing the error.
I am using oracle database 10g

Let me explain that the issue is not only related to Oracle.
If you google a bit for default namespace and Xpath you will find many topic.
Basically when you have an XML having a definition of namespace without a prefix:
i.e.:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Example XHTML document</title>
</head>
<body>
    <p>Sample content</p>
</body>
</html>
this means that all unprefixed elements are belonging to this default namespace.
In this case an Xpath equal to '//title/text()' will not get anything because it is assuming to find the element title within a null namespace. But title in this case is automatically assigned to the default namespace.
When you specify a prefix in a namespace then all elements without prefix are associated to namespace NULL. Using a default namespace is causing a lot of headache.
These links can be giving a clearer picture:
http://www.edankert.com/defaultnamespaces.html
Assuming that you have data like this:
WITH mydata AS
(   SELECT '
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Example XHTML document</title>
</head>
<body>
    <p>Sample content</p>
</body>
</html>' xmldata FROM DUAL
SELECT xmltype (xmldata).EXTRACT ('//title/text()').getstringval ()
FROM mydata;
This query will not give anything back to you. You will have to specify:
SELECT xmltype (xmldata).EXTRACT ('//title/text()', 'xmlns="http://www.w3.org/1999/xhtml"').getstringval ()
FROM mydata;
Note also that you should be able to get the default namespace when it is specified (without prefix) by using:
SELECT xmltype(xmldata).getnamespace() from mydata;
Post your Oracle version to see if it something related to your version. In mine I got this:
SQL*Plus: Release 11.2.0.1.0 Production on Thu Jun 20 18:32:58 2013
Copyright (c) 1982, 2010, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> WITH mydata AS
2 (   SELECT '
3 <html xmlns="http://www.w3.org/1999/xhtml">
4    <head>
5      <title>Example XHTML document</title>
6    </head>
7    <body>
8      <p>Sample content</p>
9    </body>
10 </html>' xmldata FROM DUAL
11 )
12 SELECT xmltype(xmldata).getnamespace() from mydata;
XMLTYPE(XMLDATA).GETNAMESPACE()
http://www.w3.org/1999/xhtml
SQL>
If this would work, then it would be enough to add the optional additional parameter namespace. In case it is null it will be set as xmlsn="" and it will work anyway:
Please note that it will work both if the XML has a default namespace or not
i.e.:
with default namespace:
SQL> DECLARE
2     xparam         XMLTYPE;
3     v_xpath        VARCHAR2 (500);
4     v_ns           VARCHAR2 (500);
5 BEGIN
6     xparam :=
7        xmltype ('
8 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:ns="http://www.w3.org/1999/xhtml" >
9    <head>
10      <title>Example XHTML document</title>
11    </head>
12    <body>
13      <p>Sample content</p>
14    </body>
15 </html>');
16     v_xpath := '//title/text()';
17     v_ns := 'xmlns="' || xparam.getnamespace () || '"';
18     DBMS_OUTPUT.
19      put_line (
20        'Value of title:' || xparam.EXTRACT (v_xpath, v_ns).getstringval ());
21 END;
22 /
Value of title:Example XHTML document
PL/SQL procedure successfully completed.
SQL>
and without default namespace
SQL> DECLARE
2     xparam         XMLTYPE;
3     v_xpath        VARCHAR2 (500);
4     v_ns           VARCHAR2 (500);
5 BEGIN
6     xparam :=
7        xmltype ('
8 <html xmlns:ns="http://www.w3.org/1999/xhtml" >
9    <head>
10      <title>Example XHTML document</title>
11    </head>
12    <body>
13      <p>Sample content</p>
14    </body>
15 </html>');
16     v_xpath := '//title/text()';
17     v_ns := 'xmlns="' || xparam.getnamespace () || '"';
18     DBMS_OUTPUT.
19      put_line (
20        'Value of title:' || xparam.EXTRACT (v_xpath, v_ns).getstringval ());
21 END;
22 /
Value of title:Example XHTML document
PL/SQL procedure successfully completed.
Regards.
Al
Message was edited by: AlbertoFaenza
IF removed as it is working anyway.

Strip empty namesapces from XML using Xquery/Xslt- xmlns=""

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