How to instantiate javax.sql.rowset.CachedRowSet?

When trying to instantiate javax.sql.rowset.CachedRowSet, I get the foll error...
javax.sql.rowset.CachedRowSet is abstract; cannot be instantiated
Any solutions plz...

You need to instantiate the standard reference implementation. As follows
javax.sql.rowset.CachedRowSet crs = new com.sun.rowset.CachedRowSetImpl()
Take a look at JDBC Technology Homepage and grab a copy of the JDBC RowSet Co-Bundle. You'll find a very useful tutorial in that bundle that will assist you.

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Javax.sql.rowset.serial.SerialBlob cannot be cast to oracle.sql.BLOB

Hi there,
I'm facing this exception.
My code:
final ReportTemplateAttachment rta = new ReportTemplateAttachment();
FileBlob fb = new FileBlob();
fb.setContentType(attachmentDto.getContentType().getValue());
fb.setCreationDate(sysDate);
fb.setCreationUser(userId);
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fb.setName(attachmentDto.getFileName());
fb.setLastUpdateDate(sysDate);
fb.setLastUpdateUser(userId);
fb.setLength(blob.length());
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<property name="fileData" type="blob">
<column name="FILE_DATA" />
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but when I save the main Object (a cascade operation) I get the following exception:
org.springframework.jdbc.UncategorizedSQLException:
Hibernate flushing: could not insert: [pt.sc.data.entities.FileBlob];
uncategorized SQLException for SQL
[insert into WP_ADMIN.file_blob (name, content_type, length, file_data, status, creation_user, creation_date, last_update_user, last_update_date, id)
values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)];
SQL state [null];
error code [0];
An SQLException was provoked by the following failure: java.lang.ClassCastException:
javax.sql.rowset.serial.SerialBlob cannot be cast to oracle.sql.BLOB;
nested exception is java.sql.SQLException: An SQLException was provoked by the following failure:
java.lang.ClassCastException: javax.sql.rowset.serial.SerialBlob cannot be cast to oracle.sql.BLOBAny light on the subject?
Thanks in advance,
mleiria

You don't seem to understand the difference between an object model and a database. Hibernate, being an ORM package, works on the object model and will, based on what you request it to do, generate proper SQL statements to get the database part going. But you shouldn't be thinking about databases when using Hibernate; your main focus is the object model. There is no blob, only binary data. Binary data in Java is generally handled through a byte array.
If you want to think in databases where blobs do exist, you should be using JDBC directly, not Hibernate.
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http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/files/oracle10g/webrowset/GetWebRowSet.java.html
Also refer
http://www.oracle.com/technology/sample_code/tutorials/rowset/rowsettoc.html
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Hello everyone
I am using CachedRowSet returning it from a parameterised select statement and it works fine.
If I put the same select statement into a simple read-only stored procedure then I get this exception: "A result set was generated for update".
I am not trying to update the rowset in my code.
I tried to make the CachedRowSet to be read-only but it does not help, same error.
Question 1 : can a stored procedure returning a single result-set be called to populate a read-only CachedRowSet? (in a similar fashion to a CallableStatement prepareCall method with input/output parameters).
Question 2: in general is using CachedRowSet, WebRowSet, FilteredRowSet (disconnected) and JDBCRowSet (connected) something to be encouraged for future develpment or are they deprecated, or replaced by something else/better??
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Thank you for the initial bite.
This is for Microsoft SQL Server 2008 using Microsoft JDBC driver, type 4.0.
The T-SQL stored procedure has a single select statement in it - see inside code.
Below is the Java 6 source code (including the Java import statements, many unused at the moment), apologies for poor indendation, its a cut and paste problem.
// start of Java code
import java.io.*;
import java.sql.*;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import com.microsoft.sqlserver.jdbc.*;
import com.microsoft.sqlserver.jdbc.SQLServerDriver.*;
import com.microsoft.sqlserver.jdbc.SQLServerDriver;
import java.math.BigDecimal;
import com.sun.rowset.CachedRowSetImpl;
import java.net.MalformedURLException;
import java.net.URL;
import java.sql.Connection;
import java.sql.Date;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.HashMap;
import javax.sql.rowset.CachedRowSet;
import javax.sql.rowset.spi.SyncProviderException;
import javax.sql.rowset.spi.SyncResolver;
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public static void main(String[] args)
String connectionUrl =
"jdbc:sqlserver://ABCDE-SERVER:1433;" +
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Connection conn = null;
Statement sqlstmt = null;
ResultSet rs = null;
CachedRowSet crs = null;
   try
conn = DriverManager.getConnection(connectionUrl);
System.out.println("inside try block, connected");
conn.setAutoCommit(false);
crs = new CachedRowSetImpl();
crs.setUrl(connectionUrl);
crs.setReadOnly(true);
crs.setType(ResultSet.TYPE_FORWARD_ONLY);
crs.setConcurrency(ResultSet.CONCUR_READ_ONLY);
System.out.println("inside try block, connected to CachedRowSet URL");
// this works fine:
crs.setCommand("select ADDRESSID, COUNTRY, POSTCODE, STATE, ADDRESS1, ADDRESS2, ADDRESS3, ADDRESS4, CREATEDBY, CREATEDDATE, UPDATEDBY, UPDATEDDATE from dbo.address where ADDRESSID > ?;");
-- this does not work - the SP has the same SELECT as above inside it:
crs.setCommand("{ call dbo.p_testCachedJDBCRowSet (?) }");
crs.setInt(1, 10);
crs.execute();
   while (crs.next())
System.out.println("" + crs.getInt("ADDRESSID") + " " +
crs.getString("ADDRESS1"));
   catch (Exception e)
System.out.println("inside catch block, calling Exception printStackTrace(); method now:");
e.printStackTrace();
   finally
System.out.println("inside finally block");
   if (rs != null) try { rs.close(); } catch(Exception e) { e.printStackTrace(); }
   if (sqlstmt != null) try { sqlstmt.close(); } catch(Exception e) { e.printStackTrace(); }
   if (conn != null) try { conn.close(); } catch(Exception e) { e.printStackTrace(); }
return;
// end of Java source code

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Developer Technical Support
Sun Micro Systems
http://www.sun.com/developers/support/

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Distributed Database Consulting, Inc.
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How to instantiate javax.sql.rowset.CachedRowSet?

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