WayGraphVersionMetadataDaoImpl.java 文件源码

@Override
@Transactional(readOnly=true)
public boolean checkIfGraphExists(String graphName) {
    Map<String, Object> paramMap = new HashMap<String, Object>();
    paramMap.put("graphName", graphName);
    return getNamedParameterJdbcTemplate().queryForObject("SELECT EXISTS (SELECT name FROM " + schema + "waygraphs WHERE name = :graphName)", paramMap, Boolean.class);
}