使用 Oracle APEX_JSON 生成具有多个函数的 JSON

Generating JSON with multiple functions using Oracle APEX_JSON

目前我正在使用 oracle 生成一些 json 用于后端目的的数据,我正在努力处理必须手动处理的复杂和重复的结构。

例如我有这个对象数组:

{
  "infoColumnsWidgets": [
    {
      "widgetNamespace": "mot",
      "widgetName": "info_column",
      "orderNumber": 1,
      "navigateToPage": null,
      "widgetData": {
        "title": "Fact",
        "textPattern": "$v0",
        "values": [
          {
            "id": "v0",
            "type": "int",
            "value": "200000"
          }
        ]
      }
    },
    {
      "widgetNamespace": "mot",
      "widgetName": "info_column",
      "orderNumber": 2,
      "navigateToPage": null,
      "widgetData": {
        "title": "Plan",
        "textPattern": "$v0",
        "values": [
          {
            "id": "v0",
            "type": "int",
            "value": "200000"
          }
        ]
      }
    },
    {
      "widgetNamespace": "mot",
      "widgetName": "info_column",
      "orderNumber": 3,
      "navigateToPage": null,
      "widgetData": {
        "title": "Prognosis",
        "textPattern": "$v0",
        "values": [
          {
            "id": "v0",
            "type": "int",
            "value": "100"
          }
        ]
      }
    }
  ]
}

当然,我在循环中生成它,但这种结构经常出现,我更愿意将它放入某个函数中以执行以下操作:

function f_getTest return clob as
  v_res clob;
begin
  apex_json.initialize_clob_output;
  apex_json.open_object;
    apex_json.open_object('infoColumnsWidgets');
    for rec in (select * from some_table_data)
    loop
      apex_json.write_raw(f_getWidgetJson(rec.param));
    end loop;
    apex_json.close_object;
  apex_json.close_all;
  v_res := apex_json.get_clob_output;
  apex_json.free_output;
  return v_res;
end;

但据我所知,无法使用 apex_json 将一个 json 放入另一个。我可以尝试一些奇怪的变通方法,放置一些占位符并将它们替换为最终的 clob 但不,我不想,请不要让我那样做。

非常欢迎任何想法

这有帮助吗?我从 oracle-base 中获取了示例,并将正文代码移到了一个单独的过程中。在下面的示例中,它是一个内联过程,但没有什么能阻止您将其放入独立过程或包中。

DECLARE
  PROCEDURE dept_object 
  IS
    l_cursor SYS_REFCURSOR;
  BEGIN
    OPEN l_cursor FOR
      SELECT d.dname AS "department_name",
             d.deptno AS "department_number",
             CURSOR(SELECT e.empno AS "employee_number",
                           e.ename AS "employee_name"
                    FROM   emp e
                    WHERE  e.deptno = d.deptno
                    ORDER BY e.empno) AS "employees"
      FROM   dept d
      ORDER BY d.dname;
    APEX_JSON.open_object;
    APEX_JSON.write('departments', l_cursor);   
    APEX_JSON.close_object;         
  END;
BEGIN
  APEX_JSON.initialize_clob_output;  
  dept_object;
  DBMS_OUTPUT.put_line(APEX_JSON.get_clob_output);
  APEX_JSON.free_output;
END;
/