gistfile1.java

		try {
			try {
				PreparedStatement st = session.getTransactionCoordinator().getJdbcCoordinator().getStatementPreparer().prepareStatement( sql );
				try {
					getLockable().getIdentifierType().nullSafeSet( st, id, 1, session );
					if ( getLockable().isVersioned() ) {
						getLockable().getVersionType().nullSafeSet(
								st,
								version,
								getLockable().getIdentifierType().getColumnSpan( factory ) + 1,
								session
						);
					}

					ResultSet rs = st.executeQuery();
					try {
						if ( !rs.next() ) {
							if ( factory.getStatistics().isStatisticsEnabled() ) {
								factory.getStatisticsImplementor()
										.optimisticFailure( getLockable().getEntityName() );
							}
							throw new StaleObjectStateException( getLockable().getEntityName(), id );
						}
					}
					finally {
						rs.close();
					}
				}
				finally {
					st.close();
				}

			}
			catch ( SQLException sqle ) {
				throw session.getFactory().getSQLExceptionHelper().convert(
						sqle,
						"could not lock: " + MessageHelper.infoString( getLockable(), id, session.getFactory() ),
						sql
				);
			}
		}
		catch (PessimisticLockException pe) {
			throw pe;
		}
		catch (JDBCException e) {
			throw new PessimisticLockException( "could not obtain pessimistic lock", e, object );
		}