Should I be able to update a Blob via a ResultSet? (11g driver exception)

Question

This code fails at the last line:
stmt = conn.createStatement();
String tableName = "TBL_esun01_PPP";
stmt.execute("drop table TBL_esun01_PPP");
stmt.execute("create table TBL_esun01_PPP (sid int not null primary key, blob_col blob)");
stmt.close();
//insert test data
String blobContent = "WLS JDBC4 test for blob.";
String blobContentUpdate = "WLS JDBC4 test for UpdateBlob. [Updated]";
ByteArrayInputStream inputStream = new ByteArrayInputStream(blobContent.getBytes());
ByteArrayInputStream inputStreamUpdate = new ByteArrayInputStream(blobContentUpdate.getByte
s());
String insertSql = "INSERT INTO " + tableName + " VALUES (?, ?)";
PreparedStatement pstmt = conn.prepareStatement(insertSql);
int key = 1;
pstmt.setInt(1, key);
pstmt.setBlob(2, inputStream);
pstmt.execute();
pstmt.close();
inputStream.close();
//update data
String querySql1 = "SELECT sid FROM " + tableName;
String querySql2 = "SELECT sid, blob_col FROM " + tableName;
Statement stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
// we can get updatable resultset in the same way without lob object.
// following updating can succeed.
System.out.println("Get updatable resultset using: "+querySql1);
ResultSet rs = stmt.executeQuery(querySql1);
rs.next();
rs.updateInt(1, 2);
rs.updateRow();
rs.close();
inputStreamUpdate.close();
System.out.println("Get updatable resultset using: "+querySql2);
try {// failed to get updatable resultset
rs = stmt.executeQuery(querySql2);
rs.next();
rs.updateBlob(2, inputStreamUpdate); // Fails here...
The driver is 11.1.0.6.0-Production
The DBMS is Oracle Database 11g Release 11.1.0.0.0 - Production
Get updatable resultset using: SELECT sid FROM TBL_esun01_PPP
Get updatable resultset using: SELECT sid, blob_col FROM TBL_esun01_PPP
We can not get updatable Resultset. Exception message:
java.sql.SQLException: Invalid operation for read only resultset: updateBlob
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.java:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:173)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:229)
at oracle.jdbc.driver.BaseResultSet.updateBlob(BaseResultSet.java:506)
at TestUpdatableRS.test(TestUpdatableRS.java:84)
at TestUpdatableRS.main(TestUpdatableRS.java:112)
thanks,
Joe

Answer 1

Joe,
a) I could not find updateBlob(int, java.io.InputStream). It is updateBlob(int, java.sql.Blob).
b) I tried the below test and it worked fine, I am using the latest drivers.
CREATE TABLE BLOB_TABLE (C1 NUMBER, C2 BLOB);
INSERT INTO BLOB_TABLE VALUES(55, '101011');
public static void test2(Connection conn) throws SQLException {
System.out.println("test -");
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
String query = "select c1, c2 FROM blob_table";
pstmt = conn.prepareStatement(query, ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
rs = pstmt.executeQuery();
SQLWarning x = pstmt.getWarnings();
if (x != null)
System.out.println(x.getMessage());
x = rs.getWarnings();
if (x != null)
System.out.println(x.getMessage());
BLOB blob = BLOB.createTemporary(conn, true, BLOB.DURATION_SESSION);
byte[] b = new byte[50];
java.util.Arrays.fill(b, (byte) 53);
blob.putBytes(1L, b);
if (rs.next()) {
rs.updateInt(1, 88);
rs.updateBlob(2, blob);
rs.updateRow();
x = rs.getWarnings();
if (x != null) {
System.out.println(x.getMessage());
} catch (SQLException ea) {
System.out.println(ea);
} finally {
if (rs != null) {
rs.close();
if (pstmt != null) {
pstmt.close();
System.out.println("test - done");
} // end of test2(Connection);
==
Ashok