Question

我已经编写了遍历多个实体的查询，并希望将其转换为独立的条件查询。不确定如何对多个表进行操作

StringBuilder queryString = new StringBuilder("from ");
    queryString.append(Entity).append(" e where e.specificationId in (:ids) 
       and not exists ( select 1 from Association a where "
           + "a.sourceReference = e.reference )").append("order by    
                e.displayOrder");

Answer 1

您可以使用Spring JPA。

<script src="https://apis.google.com/js/api.js"></script>
<script>
  /**
   * Sample JavaScript code for drive.permissions.list
   * See instructions for running APIs Explorer code samples locally:
   * https://developers.google.com/explorer-help/guides/code_samples#javascript
   */

  function authenticate() {
    return gapi.auth2.getAuthInstance()
        .signIn({scope: "https://www.googleapis.com/auth/drive https://www.googleapis.com/auth/drive.file https://www.googleapis.com/auth/drive.metadata https://www.googleapis.com/auth/drive.metadata.readonly https://www.googleapis.com/auth/drive.photos.readonly https://www.googleapis.com/auth/drive.readonly"})
        .then(function() { console.log("Sign-in successful"); },
              function(err) { console.error("Error signing in", err); });
  }
  function loadClient() {
    return gapi.client.load("https://content.googleapis.com/discovery/v1/apis/drive/v3/rest")
        .then(function() { console.log("GAPI client loaded for API"); },
              function(err) { console.error("Error loading GAPI client for API", err); });
  }
  // Make sure the client is loaded and sign-in is complete before calling this method.





function updatePermission(fileId, permissionId, newRole) {
  var newRole = "owner";
  // First retrieve the permission from the API.
  var request = gapi.client.drive.permissions.get({
    "fileId": "xxxxx",
    'permissionId': "xxxxx",
  });

  request.execute(function(resp) {
    resp.role = newRole;
    var updateRequest = gapi.client.drive.permissions.update({
      'fileId': "xxxxx",
      'permissionId': "xxxxx",
      'resource': resp
    });
    updateRequest.execute(function(resp) {
    });
  });
}



  gapi.load("client:auth2", function() {
    gapi.auth2.init({client_id: "xxx"});
  });
</script>
<button onclick="authenticate().then(loadClient)">authorize and load</button>
<button onclick="updatePermission()">execute</button>

您将为每种类型创建一个接口并实现GenericRepository。

Ex：

@NoRepositoryBean
public interface GenericRepository<T extends Content<T>> extends JpaRepository<T, Long>

@Query("select e from #{#entityName} e where e.specificationId in (?) and not exists ( select 1 from Association a where a.sourceReference = e.reference ) order by e.displayOrder", nativeQuery=true)
public void T findByIds(List<Long> ids);

引用：https://docs.spring.io/spring-data/jpa/docs/current/reference/html/

如何将休眠查询转换为条件

1 个答案: