@Override
	public <E> E readValue(final ResultSet rs, final int index, final Class<E> destinationType, final int dbSqlType) throws SQLException {
		T t = get(rs, index, dbSqlType);
		if ((t == null) || (rs.wasNull())) {
			return null;
		}
		return prepareGetValue(t, destinationType);
	}
@Override
	public <E> E readValue(final ResultSet rs, final int index, final Class<E> destinationType, final int dbSqlType) throws SQLException {
		T t = get(rs, index, dbSqlType);
		if ((t == null) || (rs.wasNull())) {
			return null;
		}
		return prepareGetValue(t, destinationType);
	}
@ Override public < E > E readValue ( final ResultSet rs , final int index , final Class < E > destinationType , final int dbSqlType ) throws SQLException { T t = get ( rs , index , dbSqlType ) ; if ( ( t == null ) || ( rs . wasNull ( ) ) ) { return null ; } return prepareGetValue ( t , destinationType ) ; }
Detects if there was a <code>null</code> reading and returns <code>null</code> if it was.
Result set returns default value (e.g. 0) for many getters, therefore it detects if it was
a null reading or it is a real value.
Detects if there was a <code > null< / code > reading and returns <code > null< / code > if it was . Result set returns default value ( e . g . 0 ) for many getters therefore it detects if it was a null reading or it is a real value .