我们目前正在使用 Oracle APEX 云免费层对 REST API 进行原型设计。我在 Oracle REST POST 请求中返回 sys_refcursor 时遇到问题。这是细节（我是在这里提问的新手，所以我希望格式是可读的：
桌子
CREATE TABLE "WF_PROTOTYPE"."INGREDIENT_TYPES"
( "ID" NUMBER(10,0) NOT NULL ENABLE,
"ACCOUNT_ID" NUMBER(10,0) NOT NULL ENABLE,
"NAME" VARCHAR2(100 CHAR) COLLATE "USING_NLS_COMP" NOT NULL ENABLE,
"CREATED_AT" TIMESTAMP (6), "UPDATED_AT" TIMESTAMP (6),
"DELETED_AT" TIMESTAMP (6), "CREATED_BY" NUMBER(10,0),
"UPDATED_BY" NUMBER(10,0), "DELETED_BY" NUMBER(10,0),
"DESCRIPTION" VARCHAR2(1000 BYTE) COLLATE "USING_NLS_COMP",
CONSTRAINT "INGR_TYPE_PK" PRIMARY KEY ("ID"))
扳机
create or replace TRIGGER ingredient_types_id_TRIG BEFORE INSERT OR UPDATE ON ingredient_types
FOR EACH ROW
DECLARE
v_newVal NUMBER(12) := 0;
v_incval NUMBER(12) := 0;
BEGIN
IF INSERTING AND :new.id IS NULL THEN
SELECT ingredient_types_id_SEQ.NEXTVAL INTO v_newVal FROM DUAL;
-- If this is the first time this table have been inserted into (sequence == 1)
IF v_newVal = 1 THEN
--get the max indentity value from the table
SELECT NVL(max(id),0) INTO v_newVal FROM ingredient_types;
v_newVal := v_newVal + 1;
--set the sequence to that value
LOOP
EXIT WHEN v_incval>=v_newVal;
SELECT ingredient_types_id_SEQ.nextval INTO v_incval FROM dual;
END LOOP;
END IF;
-- assign the value from the sequence to emulate the identity column
:new.id := v_newVal;
END IF;
END;
存储过程
create or replace PROCEDURE ingredient_type_POST (
p_account_id IN ingredient_types.account_id%TYPE,
p_name IN ingredient_types.name%TYPE,
p_description in ingredient_types.description%type,
p_created_by IN ingredient_types.created_by%type,
p_out_rec OUT sys_refcursor
)
AS
new_id ingredient_types.id%type;
BEGIN
INSERT INTO ingredient_types (account_id, name, DESCRIPTION, created_at, created_by)
VALUES (p_account_id, p_name, p_description, systimestamp, nvl(p_created_by,2))
RETURN id INTO new_id;
OPEN p_out_rec FOR
SELECT id, account_id, name, description
FROM ingredient_types
WHERE ID = new_id;
EXCEPTION
WHEN OTHERS
THEN HTP.print(SQLERRM);
END ingredient_type_POST;
订单定义
ORDS.DEFINE_HANDLER(
p_module_name => 'wf_api.rest',
p_pattern => 'accounts/:acct_id/ingredient_types',
p_method => 'POST',
p_source_type => 'plsql/block',
p_items_per_page => 0,
p_mimes_allowed => '',
p_comments => 'CREATE an Ingredient Type',
p_source =>
'begin
INGREDIENT_TYPE_POST(
p_account_id => :acct_id,
p_name => :name,
p_description => :description,
p_created_by => :APP_USER,
p_rec => :new_rec);
end;'
);
ORDS.DEFINE_PARAMETER(
p_module_name => 'wf_api.rest',
p_pattern => 'accounts/:acct_id/ingredient_types',
p_method => 'POST',
p_name => 'rec',
p_bind_variable_name => 'new_rec',
p_source_type => 'RESPONSE',
p_param_type => 'RESULTSET',
p_access_method => 'OUT',
p_comments => NULL);
当我从 SQL Developer 工作表 EDITOR 运行 SP，填写输入变量时，我得到了一个成功的结果（创建了新记录），它在 p_out_rec 参数中返回了预期的结果集。但是，当我在 HANDLER 编辑器中运行它并填写适当的变量时，我收到以下错误消息：
Error starting at line : 1 in command -
begin
INGREDIENT_TYPE_POST(
p_account_id => :acct_id,
p_name => :name,
p_description => :description,
p_created_by => :APP_USER,
p_rec => :new_rec);
end;
Error report -
ORA-06550: line 2, column 5:
PLS-00306: wrong number or types of arguments in call to 'INGREDIENT_TYPE_POST'
ORA-06550: line 2, column 5:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
*Cause: Usually a PL/SQL compilation error.
*Action:
我试图尽可能地模仿 ThatJeffSmith 的教程https://www.thatjeffsmith.com/archive/2017/03/parameters-and-binds-for-your-restful-services-resultsets/，但我不是看看我的错在哪里......任何见解都非常感谢！
