SyncProviderException with CachedRowSet when updating TINYINT

Question

Hi All,
I'm getting the folllowing error when trying to update either a TINYINT or SMALLINT column yet a VARCHAR column works fine. I am using java 1.5.0_05-b05, MySQL 5.0.15-nt on Windows XP Pro SP2.
Program output.
item_id name phases feed_from
1 test string 3 1
2 Level 6A DB 3 1
item_id name phases feed_from
1 test string 0 1
2 Level 6A DB 3 1
javax.sql.rowset.spi.SyncProviderException: 2 conflicts while synchronizing
at com.sun.rowset.internal.CachedRowSetWriter.writeData(Unknown Source)
at com.sun.rowset.CachedRowSetImpl.acceptChanges(Unknown Source)
at com.rjg.test.TestCachedRowSet.<init>(TestCachedRowSet.java:53)
at com.rjg.test.TestCachedRowSet.main(TestCachedRowSet.java:105)Has anyone had this problem before?
He is test code that I have written if anyone would like to try it or tell me what I am doing wrong.
import java.sql.SQLException;
import java.sql.ResultSetMetaData;
import javax.sql.rowset.spi.SyncProviderException;
import javax.sql.rowset.CachedRowSet;
import com.sun.rowset.CachedRowSetImpl;
public class TestCachedRowSet {
private final String DB_URL =
"jdbc:mysql://localhost:3306/test?dumpQueriesOnException=true";
private final String USERNAME = "username";
private final String PASSWORD = "password";
private CachedRowSet rowSet = null;
private ResultSetMetaData metaData = null;
//==============================================================================
public TestCachedRowSet( ) {
try {
Class.forName( "com.mysql.jdbc.Driver" ); // load database driver class
rowSet = new CachedRowSetImpl();
rowSet.setUrl(DB_URL); // set database URL
rowSet.setUsername(USERNAME); // set username
rowSet.setPassword(PASSWORD); // set password
rowSet.setCommand("select * from item"); // set query
rowSet.execute();
metaData = rowSet.getMetaData();
showTable();
for ( int i = 0; i < 10; i++) {
System.err.println("*******************");
rowSet.first();
/* if this line is used the updates work fine */
// rowSet.updateString(2, ""+i);
/* this line will cause an error */
rowSet.updateInt(3, Integer.parseInt(""+(i)));
/* this line will cause an error */
// rowSet.updateInt(4, Integer.parseInt(""+i));
rowSet.updateRow();
rowSet.acceptChanges();
System.err.println("*******************");
showTable();
}// for.
rowSet.close();
} catch ( SQLException sqlException ) {
sqlException.printStackTrace();
System.exit( 1 );
} catch ( ClassNotFoundException classNotFound ) {
classNotFound.printStackTrace();
System.exit( 1 );
}// catch.
}// Constructor.
//==============================================================================
private void showTable( ) {
try {
int numberOfColumns = metaData.getColumnCount();
rowSet.beforeFirst();
// display rowset header
for ( int i = 1; i <= numberOfColumns; i++ ) {
System.err.print(metaData.getColumnName(i) + "\t");
System.err.println();
// display each row
while ( rowSet.next() ) {
for ( int i = 1; i <= numberOfColumns; i++ ) {
System.err.print(rowSet.getObject(i)+ "\t");
}// for.
System.err.println();
} // end while
} catch ( SQLException sqlException ) {
sqlException.printStackTrace();
System.exit( 1 );
}// catch.
}// showTable.
//==============================================================================
public static void main(String[] args) {
new TestCachedRowSet();
}// main.
//==============================================================================
}// TestCachedRowSet.You can use this sql to create the item table.
USE test;
CREATE TABLE item (
item_id SMALLINT AUTO_INCREMENT,
name VARCHAR(100) NOT NULL,
phases TINYINT NOT NULL,
feed_from SMALLINT,
PRIMARY KEY (item_id)
insert into item (name, phases, feed_from)
values
('test string', 3, 1),
('Level 6A DB', 3, 1);I've been stuck on this problem for about 2 months, I raised a bug report but got no response so I'm assuming that the it must be a problem with my code. I'm currently using JDBCRowSet to continue on with my project but I've recently run into problems with the amount of connections, which is why I wanted to use the CachedRowSet.
Any help would be appreciated.
Thanks
Jamie

Answer 1

Hi All,
I'm getting the folllowing error when trying to update either a TINYINT or SMALLINT column yet a VARCHAR column works fine. I am using java 1.5.0_05-b05, MySQL 5.0.15-nt on Windows XP Pro SP2.
Program output.
item_id name phases feed_from
1 test string 3 1
2 Level 6A DB 3 1
item_id name phases feed_from
1 test string 0 1
2 Level 6A DB 3 1
javax.sql.rowset.spi.SyncProviderException: 2 conflicts while synchronizing
at com.sun.rowset.internal.CachedRowSetWriter.writeData(Unknown Source)
at com.sun.rowset.CachedRowSetImpl.acceptChanges(Unknown Source)
at com.rjg.test.TestCachedRowSet.<init>(TestCachedRowSet.java:53)
at com.rjg.test.TestCachedRowSet.main(TestCachedRowSet.java:105)Has anyone had this problem before?
He is test code that I have written if anyone would like to try it or tell me what I am doing wrong.
import java.sql.SQLException;
import java.sql.ResultSetMetaData;
import javax.sql.rowset.spi.SyncProviderException;
import javax.sql.rowset.CachedRowSet;
import com.sun.rowset.CachedRowSetImpl;
public class TestCachedRowSet {
private final String DB_URL =
"jdbc:mysql://localhost:3306/test?dumpQueriesOnException=true";
private final String USERNAME = "username";
private final String PASSWORD = "password";
private CachedRowSet rowSet = null;
private ResultSetMetaData metaData = null;
//==============================================================================
public TestCachedRowSet( ) {
try {
Class.forName( "com.mysql.jdbc.Driver" ); // load database driver class
rowSet = new CachedRowSetImpl();
rowSet.setUrl(DB_URL); // set database URL
rowSet.setUsername(USERNAME); // set username
rowSet.setPassword(PASSWORD); // set password
rowSet.setCommand("select * from item"); // set query
rowSet.execute();
metaData = rowSet.getMetaData();
showTable();
for ( int i = 0; i < 10; i++) {
System.err.println("*******************");
rowSet.first();
/* if this line is used the updates work fine */
// rowSet.updateString(2, ""+i);
/* this line will cause an error */
rowSet.updateInt(3, Integer.parseInt(""+(i)));
/* this line will cause an error */
// rowSet.updateInt(4, Integer.parseInt(""+i));
rowSet.updateRow();
rowSet.acceptChanges();
System.err.println("*******************");
showTable();
}// for.
rowSet.close();
} catch ( SQLException sqlException ) {
sqlException.printStackTrace();
System.exit( 1 );
} catch ( ClassNotFoundException classNotFound ) {
classNotFound.printStackTrace();
System.exit( 1 );
}// catch.
}// Constructor.
//==============================================================================
private void showTable( ) {
try {
int numberOfColumns = metaData.getColumnCount();
rowSet.beforeFirst();
// display rowset header
for ( int i = 1; i <= numberOfColumns; i++ ) {
System.err.print(metaData.getColumnName(i) + "\t");
System.err.println();
// display each row
while ( rowSet.next() ) {
for ( int i = 1; i <= numberOfColumns; i++ ) {
System.err.print(rowSet.getObject(i)+ "\t");
}// for.
System.err.println();
} // end while
} catch ( SQLException sqlException ) {
sqlException.printStackTrace();
System.exit( 1 );
}// catch.
}// showTable.
//==============================================================================
public static void main(String[] args) {
new TestCachedRowSet();
}// main.
//==============================================================================
}// TestCachedRowSet.You can use this sql to create the item table.
USE test;
CREATE TABLE item (
item_id SMALLINT AUTO_INCREMENT,
name VARCHAR(100) NOT NULL,
phases TINYINT NOT NULL,
feed_from SMALLINT,
PRIMARY KEY (item_id)
insert into item (name, phases, feed_from)
values
('test string', 3, 1),
('Level 6A DB', 3, 1);I've been stuck on this problem for about 2 months, I raised a bug report but got no response so I'm assuming that the it must be a problem with my code. I'm currently using JDBCRowSet to continue on with my project but I've recently run into problems with the amount of connections, which is why I wanted to use the CachedRowSet.
Any help would be appreciated.
Thanks
Jamie