How to check a xml data is empty or not

Hi All,
I am building a BPEL process. I want to make a check on empty xml. Can anyone please suggest How can I make that check.

Hi.
another way, is to use the countNodes function. For example:
ora:countNodes('inputVariable','payload','/ns1:mensajeEmail/ns1:cuerpoAttachment') = 0
If that is true, then I know that the element is not present, and that could mean that ur XML is empty.
Hope this helps
best

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Message was edited by:
Kichas

Thank you for reply,
As you suggested, I will use XMLType storage as CLOB (without XML Schema).
As I mentioned before, I use Java Servlet, deployed on Tomcat WebServer, to receive XML messages from Client application via HTTP POST method.
I use these libs to get the XML payload and parse it into a Document:
import org.w3c.dom.*;
import org.xml.sax.InputSource;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
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ex.printStackTrace();
throw new ServletException(ex);
I create a relational table, that contains XMLType column:
CREATE TABLE xwarehouses (
warehouse_id NUMBER,
warehouse_spec XMLTYPE)
XMLTYPE warehouse_spec STORE AS CLOB;
Now I want to insert all DOM Document into XMLType column. So I do like this:
import oracle.xdb.XMLType;
String SQLTEXT = "INSERT INTO XWAREHOUSES (WAREHOUSE_ID, WAREHOUSE_SPEC) VALUES (?, ?)";
XMLType xml = XMLType.createXML(con,dom);
PreparedStatement sqlStatement = con.prepareStatement(SQLTEXT);
sqlStatement.setInt(1,2);
sqlStatement.setObject(2,xml);
sqlStatement.execute();
sqlStatement.close();
dom is the Document, that I got from HTTP Request input stream.
My servlet throws an exception:
java.lang.NoClassDefFoundError: oracle/xml/parser/v2/XMLParseException
at XmlService.GetMatListServiceHandler.processRequest(GetMatListServiceHandler.java:111)
at XmlService.XmlServiceHandler.handleRequest(XmlServiceHandler.java:43)
at XmlService.XmlServiceServlet.doPost(XmlServiceServlet.java:69)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
why does he needs oracle.xml.parser.v2.XMLParseException? I don't use Oracle parser? Does this code line throws the exception (I am not able to debug my code, because I have not configured JDeveloper to be able to use Remote Debuging):
XMLType xml = XMLType.createXML(con,dom);
Does it reparses the given dom Document or what?. When I deploy xmlparserv2.jar to Tomcat, everything is ok, application inserts XML data into XMLType column.
Is there another way to insert the whole org.w3c.dom Document or Document fragment (that is already parsed) into XMLType column. Can you provide any sample code?
The Document may contain national symbols, so they should be correctly stored and then later retrieved.
Many thanks.

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I am failry new to xml document processing in Oracle using PL/SQL.
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++++++++++++++++++++++++++++++++++++++++++++++++
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<Baseline>TIF</Baseline>
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<Compression>
<Baseline>CCITT</Baseline>
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<ViewSide>Front</ViewSide>
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<imageFileLocator>IFTDISB20100330172157M002.zip</imageFileLocator>
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<Baseline>CCITT</Baseline>
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<Format>
<Baseline>TIF</Baseline>
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<Compression>
<Baseline>CCITT</Baseline>
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<ViewSide>Rear</ViewSide>
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<totalBatchImageViewsDelivered>2056</totalBatchImageViewsDelivered>
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<collectionSummary>
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<totalItemCount>1028</totalItemCount>
<totalCollectionAmount>61370501</totalCollectionAmount>
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<totalItemCount>1028</totalItemCount>
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<totalDocumentImageViewsDelivered>2056</totalDocumentImageViewsDelivered>
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Any ideas and or suggestions will be greatly appreciated.
Cheers!
Edited by: user12021655 on Aug 3, 2010 1:25 PM

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