benchmark/sql/method_api_depth.sql

USE qare;
DELIMITER $$

DROP PROCEDURE IF EXISTS CalculateMethodApiDepth$$

CREATE PROCEDURE CalculateMethodApiDepth()
BEGIN
    DECLARE current_depth INT DEFAULT 2;
    DECLARE rows_affected INT DEFAULT 0;
    DECLARE max_depth INT DEFAULT 20;  -- 安全阀 用于测试

    /* 1. 清空结果表 */
    TRUNCATE TABLE method_api_depth;

    /* 2. 初始层：直接调用 API 的方法
          C → api  ==> depth = 2 */
    INSERT INTO method_api_depth (method_id, api_id, depth, PATH)
    SELECT
        caller_method_id,
        api_id,
        2 AS depth,
        CAST(caller_method_id AS CHAR) AS PATH
    FROM api_call;

    SELECT ROW_COUNT() INTO rows_affected;

    /* 3. 逐层向上 BFS */
    WHILE rows_affected > 0 AND current_depth < max_depth DO

        SET current_depth = current_depth + 1;

        INSERT IGNORE INTO method_api_depth (method_id, api_id, depth, PATH)
        SELECT
            mc.caller_method_id,
            prev.api_id,
            current_depth,
            CONCAT(mc.caller_method_id, '->', prev.path)
        FROM method_call mc
        JOIN method_api_depth PREV
            ON mc.callee_method_id = prev.method_id
        WHERE prev.depth = current_depth - 1
          -- 防环：A->A / A->B->A
          AND FIND_IN_SET(
                mc.caller_method_id,
                REPLACE(prev.path, '->', ',')
              ) = 0;

        SELECT ROW_COUNT() INTO rows_affected;

    END WHILE;

    SELECT CONCAT('Calculation completed. Max depth = ', current_depth - 1) AS STATUS;

END$$

DELIMITER ;








CALL CalculateMethodApiDepth();