int rows = 0;
FileInputStream fin = null;
ResultSet rslt = null;
Statement stmt = null;
Blob photo = null;
long person_id = 0;
try {
conn.setAutoCommit(false);
// get Tim's person_id
stmt = conn.createStatement();
rslt = stmt.executeQuery(
"select person_id " +
"from person " +
"where last_name = 'O''Reilly' " +
"and first_name = 'Tim'");
while (rslt.next()) {
rows++;
person_id = rslt.getLong(1);
}
if (rows > 1) {
System.err.println("Too many rows!");
System.exit(1);
}
else if (rows == 0) {
System.err.println("Not found!");
System.exit(1);
}
rslt.close();
rslt = null;
// check to see if the row already exists
rows = 0;
rslt = stmt.executeQuery(
"select photo " +
"from person_information " +
"where person_id = " + Long.toString( person_id ) + " " +
"for update nowait");
while (rslt.next()) {
rows++;
photo = rslt.getBlob(1);
}
rslt.close();
rslt = null;
// if it doesn't exist then insert
// a row in the information table.
// This creates the LOB locators
if (rows == 0) {
rows = stmt.executeUpdate(
"insert into person_information " +
"( person_id, biography, photo ) " +
"values " +
"( " + Long.toString( person_id ) +
", empty_clob(), empty_blob() )");
System.out.println(rows + " rows inserted");
// Now retrieve the locator
rows = 0;
rslt = stmt.executeQuery(
"select photo " +
"from person_information " +
"where person_id = " + Long.toString( person_id ) + " " +
"for update nowait");
rslt.next();
photo = rslt.getBlob(1);
rslt.close();
rslt = null;
}
stmt.close();
stmt = null;
// Copy the entire contents of the file to a buffer
File binaryFile = new File("tim.gif");
long fileLength = binaryFile.length();
byte[] buffer = new byte[(int)fileLength];
fin = new FileInputStream(binaryFile);
fin.read(buffer);
fin.close();
fin = null;
// Write the buffer all at once
int bytesWritten = ((oracle.sql.BLOB)photo).putBytes(1, buffer);
if (bytesWritten == fileLength)
System.out.println(fileLength + " bytes written");
else
System.out.println("only " + bytesWritten + " bytes written");
conn.commit();
}
catch (SQLException e) {
System.err.println("SQL Error: " + e.getMessage());
}
catch (IOException e) {
System.err.println("IO Error: " + e.getMessage());
}
finally {
if (rslt != null)
try { rslt.close(); } catch (SQLException ignore) { }
if (stmt != null)
try { stmt.close(); } catch (SQLException ignore) { }
if (fin != null)
try { fin.close(); } catch (IOException ignore) { }
}
