Spring Data JPA JSONB 参数化

将此查询转换为 Spring Data Repository 的正确语法（JPA、Spring Data 或 SpEL）是什么nativeQuery?

SELECT *
FROM   mytable 
WHERE  f_jsonb_arr_lower(myjsonb -> 'myArray', 'subItem', 'email') 
 @> '"[email protected] /cdn-cgi/l/email-protection"';

我想使用输入参数而不是硬编码"[email protected] /cdn-cgi/l/email-protection".

我的模型：PostgresmyTable带有 JSONB 列myJsonb:

{
  "myArray": [
    {
      "subItem": {
        "email": "[email protected] /cdn-cgi/l/email-protection"
      }
    },
    {
      "subItem": {
        "email": "[email protected] /cdn-cgi/l/email-protection"
      }
    }
  ]
}

索引描述here https://stackoverflow.com/questions/47822254/create-postgres-jsonb-index-on-array-sub-object.

硬编码版本的工作原理：

@Query(value = 
        "SELECT m.* " +
        " FROM mytable AS m " +
        " WHERE f_jsonb_arr_lower(myjsonb -> 'myArray' ,'subItem', 'email') " + 
        "   @> '\"[email protected] /cdn-cgi/l/email-protection\"' " +
        " ORDER BY ?#{#pageable} ", 
        // Spring Data nativeQueries with Pageable require a separate countQuery:
        countQuery = 
        "SELECT count(m.id) " +
        " FROM mytable AS m " +
        " WHERE f_jsonb_arr_lower(myjsonb -> 'myArray' ,'subItem', 'email') " +
        " @> '\"[email protected] /cdn-cgi/l/email-protection\"' ",
        nativeQuery = true)
Page<MyTableEntity> findAllHardcodedPageable(Pageable pageable);

但试图利用lowercaseEmailAddressSpring 数据存储库中的参数 nativeQuery 不起作用：

@Query(value = 
        "SELECT m.* " +
        " FROM mytable AS m " +
        " WHERE f_jsonb_arr_lower(myjsonb -> 'myArray' ,'subItem', 'email') " + 
        "   @> '\"?{lowercaseEmailAddress}\"' " +
        " ORDER BY ?#{#pageable} ", 
        countQuery = 
        "SELECT count(m.id) " +
        " FROM mytable AS m " +
        " WHERE f_jsonb_arr_lower(myjsonb -> 'myArray' ,'subItem', 'email') " +
        " @> '\"?{lowercaseEmailAddress}\"' ",
        nativeQuery = true)
Page<MyTableEntity> findAllByEmailPageable
  (String lowercaseEmailAddress, Pageable pageable);

在我的 Postgres 查询日志记录中，我可以看到lowercaseEmailAddress参数从未设置：

LOG:  execute S_2: COMMIT
LOG:  execute S_3: BEGIN
LOG:  execute <unnamed>: SELECT count(m.id)  FROM mytable 
   AS m  WHERE f_jsonb_arr_lower(myjsonb -> 'myArray', 
   'subitem', 'email')  @> '"?1"' 
LOG:  execute S_11: ROLLBACK

找到了答案：

1）仅传递双引号String到 spring 数据存储库方法：

String emailAddressWithDoubleQuotes = String.format("\"%s\"",emailAddress);
result = repository.findAllByEmailPageable(emailAddressWithDoubleQuotes, pageRequest).getContent();

2）Spring 存储库@Query需要将 SpEL 表达式放在括号中并转换为jsonb:

static final String FIND_ALL_BY_EMAIL_QUERY = " FROM mytable AS m " +
        " WHERE f_jsonb_arr_lower(metadata -> 'myArray', 'subItem', 'email') " +
        " @> ( ?#{#lowercaseEmailAddress} )\\:\\:jsonb";
@Query( // only use 'ORDER BY #pageableWithNativeSort' on 'value' query:
        value = "SELECT m.* " + FIND_ALL_BY_EMAIL_QUERY + " ORDER BY ?#{#pageableWithNativeSort} ",
        // Spring Data nativeQueries with Pageable require a separate 'countQuery':
        countQuery = "SELECT count(m.id) " + FIND_ALL_BY_EMAIL_QUERY,
        nativeQuery = true)
Page<OrderEntity> findAllBysubItemEmail(
        @Param("lowercaseEmailAddress") String lowercaseEmailAddress,
        @Param("pageableWithNativeSort") Pageable pageableWithNativeSort);