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Classcast Exception using Oracle Blobs(10g) and JBoss 4.0
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created by <a href="http://community.jboss.org/people/satwika.chandra">satwika C</a> in <i>JCA</i> - <a href="http://community.jboss.org/message/563449#563449">View the full discussion</a>
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<div class="jive-rendered-content"><p><span style="font-size: 10pt;"><p align="left">Hi all,</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">Im using oracle 10g and JBoss 4.</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">Im getting the following error :</p><p><span style="font-size: 10pt; color: #000080;"><span style=": ; color: #000080; font-size: 2; font-color: #000080; "><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><span style="font-color: #000080; font-size: 2; "><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></span><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></p><p><p><span style="text-decoration: underline;"><span style="font-size: 10pt; color: #000080;"><span style=": ; color: #000080; font-size: 2; text-decoration: underline; font-color: #000080; "><p>java.lang.ClassCastException</p></span><span style=": ; font-size: 2; text-decoration: underline; font-color: #000080; "><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span></span><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p></span><span style="color: #000000; font-size: 10pt; ">: oracle.sql.BLOB</span></p></p><span style="font-size: 2; "><p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left"> Conn = DBConnector.getConnection();</p><p align="left">// Initially inserted an empty_blob() to data base</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">//retrieving the record and locking it.</p><p align="left"> PreparedStatement pStatement = conn.prepareStatement("Select ............... for Update")</p><p align="left">ResultSet result = pStatement.executeQuery();</p><p align="left">System.out.println(result.getClass().getName());</p><p align="left">  </p><p align="left">result.next();</p><p align="left">BLOB blob =((OracleResultSet)result).getBLOB(1);</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">OutputStream outStream = blob.setBinaryStream(1L);</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">int size = blob.getBufferSize();  </p><p align="left">byte[] buffer = new byte[size];  </p><p align="left">int length = -1;  </p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">while ((length = inputStream.read(buffer)) != -1)</p><p align="left" style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p align="left">outStream.write(buffer, 0, length);</p><p align="left">inputStream.close();</p><p>outStream.close();</p></p></span></span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Ive also tried casting my ResultSet obj with WrappedResultSet of org.jboss.resource.adapter package.</p><p>This is also throwing a classcastexception.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Please provide a solution.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Thanks,</p><p>Sat !</p></div>
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