private boolean after() {
		if (afterSqls != null) {
			for (String sql : afterSqls) {
				if (!StringUtils.hasText(sql)) {
					continue;
				}
				if (log.isDebugEnabled()) {
					log.debug("Executing after: " + sql);
				}
				try {
					jdbcTemplate.execute(sql);
				}
				catch (DataAccessException e) {
					lastException = e;
					return false;
				}
			}
		}
		return true;
	}
Utility class helping to execute jdbc operations within a load session.
Provides a way to prepare, run and clean a main load command. Additionally
it can use a list of before and after commands which are execute before and after
of a main command. Clean command is executed last even if some of the other
commands fail.

@author Janne Valkealahti
extensions/spring-xd-extension-gpfdist/src/main/java/org/springframework/xd/greenplum/support/JdbcCommands.java