PreparedStatement stmt = null;
boolean autoCommit = false;
int rows = 0;
boolean success = false;
try {
DataImportPreferenceBean settings = PreferencesManager.getPreferences();
importer.open();
if (skipHeader)
importer.next();
autoCommit = conn.getAutoCommit();
conn.setAutoCommit(false);
if (settings.isUseTruncate()) {
String sql = "DELETE FROM " + table.getQualifiedName();
stmt = conn.prepareStatement(sql);
stmt.execute();
stmt.close();
}