Problem while using oracle.sql.CLOB

Question

Hello,
I was trying to use oracle.sql.CLOB to update CLOB types in database. I was able to successfully run the update when I use the connection obtained from normal DriverManager.getConnection method. But have issues when I use a datasource lookup, Am using Websphere as my JDBC provider environ.
The exception I get during the execution of this line is
oracle.sql.CLOB newClob = oracle.sql.CLOB.createTemporary((java.sql.Connection)conn, false, oracle.sql.CLOB.DURATION_CALL);
java.lang.ClassCastException: com.ibm.ws.rsadapter.jdbc.WSJdbcConnection
as my connection is obtained by DataSource.getConnection() method.
Is this a documented limitation of Oracle SQL CLOB class or is there a way I can tweak the code to work.
Am using a oracle 9i thin driver
Thanks
Message was edited by:
caniknow

Answer 1

With the new Oracle drivers there is no need to do it that complicated.
Finally Oracle has implemented the standard JDBC calls, and inserting a CLOB is really easy now:
String clobContent  = populateClobData(); // whatever...
stmt = con.prepareStatement("INSERT INTO clob_table (id, clob_col) VALUES (?,?)";
stmt.setInt(1, 42);
Reader r = new StringReader(clobContent);
stmt.setCharacterStream(2, r, clobContent.length());
stmt.executeUpdate();
con.commit();This works with UPDATE as well. If you need to deal with BLOBs simply use setBinaryStream().
Reading is done using getCharacterStream() or getBinaryStream()
This actually works across all (or at leas all major) database systems