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                # 組件源碼 ``` /** * <b>方法描述:</b> 刪除(按Entity) <br/> * <b>創建者:</b> admin <br/> * <b>創建時間:</b> 2020-09-14 11:46:05 <br/> * * @param poolName * 入參|數據源名稱|{@link java.lang.String} * @param className * 入參|執行操作類名|{@link java.lang.String} * @param entity * 入參|實體條件|{@link com.baomidou.mybatisplus.extension.activerecord.Model} * @param count * 出參|處理條數|{@link int} * @return -1 異常<br/> * 0 失敗<br/> * 1 成功<br/> */ @Component(label = "刪除(Entity)", style = "判斷型", type = "同步組件", comment = "根據數據庫實體類的賦值字段進行條件查詢。", version = "1.0.0", deprecated = false, author = "admin", date = "2020-09-14 11:46:05") @InParams(param = {@Param(name = "poolName", comment = "數據源名稱", type = java.lang.String.class), @Param(name = "className", comment = "執行操作類名", type = java.lang.String.class), @Param(name = "entity", comment = "實體條件", type = com.baomidou.mybatisplus.extension.activerecord.Model.class)}) @OutParams(param = {@Param(name = "count", comment = "處理條數", type = int.class)}) @Returns( returns = {@Return(id = "-1", desp = "異常"), @Return(id = "0", desp = "失敗"), @Return(id = "1", desp = "成功")}) public static ResultBase P_deleteByWrapper(String poolName, String className, Model entity) { try { AppLog.debug("根據字段 刪除數據 組件參數:poolName={},className={},map={}", poolName, className, entity); if (StringUtil.isEmpty(className)) { return ResultBase.newFailureResult("TPTD0001", "參數錯誤:執行類參數【className】不能為空"); } if (entity == null || !(entity instanceof Model)) { return ResultBase.newFailureResult("TPTD0010", "參數錯誤:條件類【entity】不能為空,且必須為數據庫對應實體類"); } setDatasource(poolName); Object maper = BundleUtil.getService(className); if (maper == null) { return ResultBase.newFailureResult("TPTD0010", "錯誤:當前環境未找到[" + className + "]的可用數據庫操作Mapper 實例"); } Method method = getMethod(maper.getClass(), className, MybatisPlusMapperMehtod.delete); if (method != null) { AppLog.debug("開始執行相應的Mapper 方法"); Wrapper w = Wrappers.update(entity); return ResultBase.newSuccessResult(method.invoke(maper, w)); } } catch (Exception e) { AppLog.error(e); return ResultBase.newExceptionResult("TPTD0003", "方法調用錯誤,類:" + className + "調用:deleteByPrimaryKey 方法錯誤" + AppLog.errorMsg(e)); } return ResultBase.newFailureResult("TPTD0004", "方法調用錯誤,類:" + className + "沒有可執行方法:deleteByPrimaryKey"); } ``` # 交易中組件使用方式 ![](https://img.kancloud.cn/a7/93/a7936aa59605164e39ebb1e9f245cfd9_1868x895.png) # 參數說明及示例 ## 入口參數 數據源名稱:使用的數據源名稱,可以為空 執行操作類名:執行 SQL 語句的類,示例: `"data.test.test.mapper.TUserMapper"` 實體條件:根據數據庫實體類的賦值字段進行條件刪除,示例: `__INNER__["user"]` ## 出口參數 處理條數:成功刪除的記錄數,示例: `__INNER__["result"]` > 當交易部署到微服務上時,數據源在微服務界面上配置。
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