Inserting Hashtable into a BLOB column..

Question

Hi,
Iam trying to store a hashtable object into a BLOB column..when i try to retrieve
from hte blob column i get the following exception
StreamCorruptedException:out of range is 0

Answer 1

I could insert into database successfully,while retrieving I got this exception.
I could able to insert and retrieve anyother java objects except Hashtable and
HashMap...
also I tried putting Hasttable into a Vector..that also didn'
t work.
thanks in advance.
Muthu
public void conn(){
ht.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");
ht.put(Context.PROVIDER_URL,"t3://localhost:7001");
          try {
               ctx = new InitialContext(ht);
               javax.sql.DataSource ds = (javax.sql.DataSource) ctx.lookup ("WorkFlowDataSource");
               java.sql.Connection connection = ds.getConnection();
          connection.setAutoCommit(false);
          Statement statement = connection.createStatement();
          rs = statement.executeQuery("select blob_data from test for update");
          while (rs.next()) {
                    myRegularBlob = rs.getBlob("blob_data");
          OutputStream os = ((weblogic.jdbc.common.OracleBlob)myRegularBlob).getBinaryOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(os);
          Hashtable hash = new Hashtable();
          hash.put("1","111111111hgfdhgkdkvalue");
          oos.writeObject(hash);
          oos.flush();
          connection.commit();
          System.out.println("Object inserted into persistence..");
          rs.close();
          statement.close();
          } catch(Exception ex){
               ex.printStackTrace();
          retrieve();
          public void retrieve(){
          try {
                    ctx = new InitialContext(ht);
                    javax.sql.DataSource ds = (javax.sql.DataSource) ctx.lookup ("WorkFlowDataSource");
                    java.sql.Connection connection = ds.getConnection();
                    Statement statement = connection.createStatement();
                    rs = statement.executeQuery("select blob_data from test ");
          while (rs.next()) {
          myRegularBlob = rs.getBlob("blob_data");
          ObjectInputStream oos1 = new ObjectInputStream(os1);
          Hashtable sections = (Hashtable)oos1.readObject();
          System.out.println("Obj retrieved..\n"+sections);
          statement.close();
          rs.close();
          connection.close();
     } catch(Exception ex){
          ex.printStackTrace();
"Slava Imeshev" <[email protected]> wrote:
Muthu,
could you show us how you write/read the hashtable?
Regards,
Slava Imeshev
"Muthu" <[email protected]> wrote in message
news:[email protected]...
Hi,
Iam trying to store a hashtable object into a BLOB column..when i tryto
retrieve
from hte blob column i get the following exception
StreamCorruptedException:out of range is 0