No query engine found

[Celinio Fernandes <ce...@wanadoo.fr>]

Hi,
I do not understand this error, can anyone tell me what am i doing wrong 
here please ?
Thanks

java.lang.RuntimeException: No query engine found

at org.apache.xmlbeans.impl.store.Query.getCompiledQuery(Query.java:97)

at org.apache.xmlbeans.impl.store.Query.getCompiledQuery(Query.java:53)

at org.apache.xmlbeans.impl.store.Query.cursorExecQuery(Query.java:48)

at org.apache.xmlbeans.impl.store.Cursor._execQuery(Cursor.java:1328)

at org.apache.xmlbeans.impl.store.Cursor._execQuery(Cursor.java:1323)

at org.apache.xmlbeans.impl.store.Cursor.execQuery(Cursor.java:3814)

at Conversion.parse(Conversion.java:432)

at Conversion.main(Conversion.java:149)

Exception in thread "main"



Here is my code:

      XmlObject resultXml =null;
       IOS lios = lesepjs[i].getIOS();

       XmlCursor curs = lios.newCursor();

       String queryText  = "$this:IOS/IO/LO_CO_IDG";

       XmlCursor resultCursor  = curs.execQuery(queryText); // 
<============= line 432

             if (resultCursor.getSelectionCount() > 0)
               {
              resultXml = resultCursor.getObject();
              System.out.println(resultXml.toString());
              resultCursor.dispose();
               }

       curs.dispose();





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