SQLDeveloper:没有足够的参数

时间:2014-11-12 16:41:21

标签: oracle plsql oracle-sqldeveloper oracle-spatial

我正在编写一个APEX应用程序,它通过Googlemaps API利用空间进行邻近搜索,我已经构建了该函数并且编译得很好,但每当我尝试在SQLDeveloper中运行它时,我都会收到错误not enough arguments

我创建的用于设置新纬度/长点的函数从我的stores表中获取一个邮政编码输入,然后使用Google地图API返回该邮政编码的长整数,其中return构建一个SDO_GEOMETRY对象,该对象在location表的stores列中返回并设置。

功能代码:

CREATE OR REPLACE FUNCTION set_spatial_point
( 
    -- Only accept postcodes from the store table
    p_postcode stores.postcode%TYPE
)
    RETURN MDSYS.SDO_GEOMETRY
IS
    -- Build local variables
    l_lng      VARCHAR2(100);
    l_lat      VARCHAR2(100);
    n_spatial_object MDSYS.SDO_GEOMETRY;
BEGIN
    -- Populate long and lat parameters
    POSTCODE_TO_LAT_LNG_GM_API(p_postcode, l_lat, l_lng);

    -- Populate the new spatial object
    n_spatial_object := MDSYS.SDO_GEOMETRY
    (
        -- use 01 as we wish to add the point to the map
        2001, 
        -- SRID for WGS84 longitutde/latitude format
        8307,
         -- Set the information of the point ( we don't need a Z co-ord )
        SDO_POINT_TYPE
        (
            l_lng,
            l_lat,
            null
         ),
        null,   -- We have no SDO_ELEM_INFO_ARRAY
        null    -- We have no SDO_ORDINATE_ARRAY
    );

    -- Return the new spatial object
    dbms_output.put_line('sdo_gtype='||n_spatial_object.sdo_gtype);
    dbms_output.put_line('first element from sdo_ordinates='||n_spatial_object.sdo_ordinates(1));
    RETURN n_spatial_object;
END set_spatial_point;

为什么我收到的参数错误不足,即使我用有效的stores.postcode%TYPE调用它,(我已尝试更改为VARCHAR2,但这没有任何区别。)

编辑: 创建函数后,我调用方法:

DECLARE
   my_object    MDSYS.SDO_GEOMETRY;  
BEGIN
  my_object := set_spatial_value('MK80PB');
END;

我现在收到以下错误:

Error starting at line : 1 in command -
DECLARE
  my_object    MDSYS.SDO_GEOMETRY;  
BEGIN
my_object := set_spatial_value('MK80PB');
END;
Error report -
ORA-06550: line 4, column 14:
PLS-00201: identifier 'SET_SPATIAL_VALUE' must be declared
ORA-06550: line 4, column 1:
PL/SQL: Statement ignored
06550. 00000 -  "line %s, column %s:\n%s"
*Cause:    Usually a PL/SQL compilation error.
*Action:

1 个答案:

答案 0 :(得分:1)

你得到的错误是显而易见的:你创建函数为SET_SPATIAL_POINT(),但你调用SET_SPATIAL_VALUE(),这显然是失败的,因为它不存在。

现在,让我们试一试。我不得不替换你的一些代码,因为我没有STORES表或Google调用的声明,所以我对该调用的结果进行了硬编码:

CREATE OR REPLACE FUNCTION set_spatial_point
( 
    -- Only accept postcodes from the store table
    p_postcode varchar2
)
    RETURN SDO_GEOMETRY
IS
    -- Build local variables
    l_lng      VARCHAR2(100);
    l_lat      VARCHAR2(100);
    n_spatial_object SDO_GEOMETRY;
BEGIN
    -- Populate long and lat parameters
    -- POSTCODE_TO_LAT_LNG_GM_API(p_postcode, l_lat, l_lng);
    l_lat:=45.3;
    l_lng:= 3.7;

    -- Populate the new spatial object
    n_spatial_object := SDO_GEOMETRY
    (
        -- use 01 as we wish to add the point to the map
        2001, 
        -- SRID for WGS84 longitutde/latitude format
        8307,
         -- Set the information of the point ( we don't need a Z co-ord )
        SDO_POINT_TYPE
        (
            l_lng,
            l_lat,
            null
         ),
        null,   -- We have no SDO_ELEM_INFO_ARRAY
        null    -- We have no SDO_ORDINATE_ARRAY
    );

    -- Return the new spatial object
    dbms_output.put_line('sdo_gtype='||n_spatial_object.sdo_gtype);
    dbms_output.put_line('first element from sdo_ordinates='||n_spatial_object.sdo_ordinates(1));
    RETURN n_spatial_object;
END set_spatial_point;
/
show errors

工作正常。

让我们试一试:

SQL> select set_spatial_point('XXXX') from dual;
ERROR at line 1:
ORA-06531: Reference to uninitialized collection
ORA-06512: at "SCOTT.SET_SPATIAL_POINT", line 38

同样,这很明显。错误发生在第38行:

        dbms_output.put_line('first element from sdo_ordinates='||n_spatial_object.sdo_ordinates(1));

由于n_spatial_object.sdo_ordinates()为null(就像你在第32行写的那样),因此失败了(显然再次)。

让我们删除那些调试行并重新定义该函数。然后让我们尝试一下。它现在按预期工作:

SQL> select set_spatial_point('XXXX') from dual;

SET_SPATIAL_POINT('XXXX')(SDO_GTYPE, SDO_SRID, SDO_POINT(X, Y, Z), SDO_ELEM_INF
-------------------------------------------------------------------------------
SDO_GEOMETRY(2001, 8307, SDO_POINT_TYPE(3.7, 45.3, NULL), NULL, NULL)

1 row selected.