Insert Blob column in the client errors ClassCastException: oracle.sql.BLOB

Question

Hi,
When I try to insert and commit a Blob column(picture) I am getting the following exception.
Is there any jar I need to add or any other setup I need to do to accept the BLOB column in the olite client database.
500 Internal Server Error
javax.faces.FacesException: #{backing_XXPBWorkOrderResultsCreatePGBean.saveButton_action}: javax.faces.el.EvaluationException: java.lang.ClassCastException: oracle.sql.BLOB
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
     at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:211)
Caused by: java.lang.ClassCastException: oracle.sql.BLOB
     at oracle.lite.poljdbc.LiteEmbPreparedStmt.setVal(Unknown Source)
     at oracle.lite.poljdbc.POLJDBCPreparedStatement.setObject(Unknown Source)
     at oracle.lite.poljdbc.POLJDBCPreparedStatement.setObject(Unknown Source)
     at oracle.lite.poljdbc.POLJDBCPreparedStatement.setObject(Unknown Source)
     at oracle.lite.web.JupPreparedStatement.setObject(Unknown Source)
     at oracle.jbo.server.BaseSQLBuilderImpl.bindUpdateStatement(BaseSQLBuilderImpl.java:1765)
     at oracle.jbo.server.EntityImpl.bindDMLStatement(EntityImpl.java:7345)
With regareds,
Kali.
OSSI.

Answer 1

Here are examples if inserting into a Blob from text, file, and retrieving a blob.
Insert into a Blob (Text)
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class InsertBlob {
    public static void main(String[] args) throws FileNotFoundException {
        Connection con = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        String letterText = "some letter text";
        long id = 100;
        try {
            DriverManager.registerDriver((Driver)(Class.forName("oracle.lite.poljdbc.POLJDBCDriver").newInstance()));
            try {
                con = DriverManager.getConnection("jdbc:polite:polite", "system", "manager");
            } catch (SQLException sqle) {
                sqle.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        try {
            stmt = con.prepareStatement("INSERT INTO BLOB_TABLE (BLOB_ID, BLOB_DATA) VALUES (?, EMPTY_BLOB())");
            stmt.setLong(1, id);
            stmt.executeUpdate();
            stmt = con.prepareStatement("SELECT BLOB_DATA FROM BLOB_TABLE WHERE BLOB_ID = ? FOR UPDATE");
            stmt.setLong(1, id);
            rs = stmt.executeQuery();
            if (rs.next()) {
                try {
                    oracle.lite.poljdbc.BLOB oliteBlob = null;
                    oliteBlob = ((oracle.lite.poljdbc.OracleResultSet) rs).getBLOB(1);
                    byte[] byteLetterText = letterText.getBytes();
                    oliteBlob.putBytes(1, byteLetterText);
                    con.commit();
                } catch (ClassCastException e) {
                    e.printStackTrace();
                } finally {
                    rs = null;
                    stmt = null;
                    con.rollback();
                    con = null;
        } catch (SQLException e) {
            e.printStackTrace();
}Insert Into a Blob (File)
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class InsertBlobFile {
    public static void main(String[] args) throws FileNotFoundException {
        Connection con = null;
        PreparedStatement stmt = null;
        long id = 200;
        try {
            DriverManager.registerDriver((Driver)(Class.forName("oracle.lite.poljdbc.POLJDBCDriver").newInstance()));
            try {
                con = DriverManager.getConnection("jdbc:polite:polite", "system", "manager");
            } catch (SQLException sqle) {
                sqle.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        try {
            stmt = con.prepareStatement("INSERT INTO BLOB_TABLE (BLOB_ID, BLOB_DATA) VALUES (?, ?)");
            stmt.setLong(1, id);
            File fBlob = new File ( "C:\\BLOB_TEST_FILE.TXT" );
            FileInputStream is = new FileInputStream ( fBlob );
            stmt.setBinaryStream (2, is, (int) fBlob.length() );
            stmt.executeUpdate();
            con.commit();
        } catch (SQLException e) {
            e.printStackTrace();
}Retrieve from Blob (Write to file)
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class RetrieveBlob {
    final static int bBufLen = 32 * 1024;
    final static String outFile = "C:\\BLOB_OUTPUT_FILE.TXT";
    public static void main(String[] args) throws IOException {
        Connection con = null;
        PreparedStatement stmt = null;
        ResultSet rs = null;
        try {
            DriverManager.registerDriver((Driver)(Class.forName("oracle.lite.poljdbc.POLJDBCDriver").newInstance()));
            try {
                con = DriverManager.getConnection("jdbc:polite:polite", "system", "manager");
            } catch (SQLException sqle) {
                sqle.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        try {
            stmt = con.prepareStatement("SELECT * FROM BLOB_TABLE");
            rs = stmt.executeQuery();
            while(rs.next()) {
                int id = rs.getInt(1);
                Blob value = rs.getBlob(2);
                System.out.println(id + " | " + value);
                writeBlobToFile(value);
        } catch (SQLException e) {
            e.printStackTrace();
    public static long readFromBlob(Blob blob, OutputStream out)
      throws SQLException, IOException {
        InputStream in = blob.getBinaryStream();
        int length = -1;
        long read = 0;
        byte[] buf = new byte[bBufLen];
        while ((length = in.read(buf)) > 0) {
            out.write(buf, 0, length);
            read += length;
        in.close();
        return read;
    public static long writeBlobToFile(Blob blob)
      throws IOException, SQLException {
        long wrote = 0;
        OutputStream fwriter = new FileOutputStream(outFile);
        wrote = readFromBlob(blob, fwriter);
        fwriter.close();
        return wrote;
}