@ticatec/node-common-library/lib/CommonService.js

A comprehensive Node.js database access framework providing robust abstractions for database connection management, SQL execution, transaction handling, pagination, and dynamic query building.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const DBManager_1 = __importDefault(require("./db/DBManager"));
const BeanFactory_1 = __importDefault(require("./BeanFactory"));
const log4js_1 = __importDefault(require("log4js"));
class CommonService {
    constructor() {
        /**
         * 在事务中运行数据库操作，自动处理事务的开始、提交和回滚
         * @param dbProcessor - 数据库处理函数，接收数据库连接作为参数
         * @returns Promise返回处理结果
         */
        this.executeInTx = async (dbProcessor) => {
            let conn = await this.getDBConnection();
            try {
                await conn.beginTransaction();
                let result = await dbProcessor(conn);
                await conn.commit();
                return result;
            }
            catch (ex) {
                await conn.rollback();
                throw ex;
            }
            finally {
                await conn.close();
            }
        };
        /**
         * 在非事务中运行数据库操作
         * @param dbProcessor - 数据库处理函数，接收数据库连接作为参数
         * @returns Promise返回处理结果
         */
        this.executeNonTx = async (dbProcessor) => {
            let conn = await this.getDBConnection();
            try {
                return await dbProcessor(conn);
            }
            finally {
                await conn.close();
            }
        };
        this.logger = log4js_1.default.getLogger(this.constructor.name);
        this.logger.debug(`创建Service实例:${this.constructor.name}`);
    }
    /**
     * 获取数据库连接
     * @protected
     * @returns Promise返回数据库连接对象
     */
    async getDBConnection() {
        const dbMgr = DBManager_1.default.getInstance();
        return await dbMgr.connect();
    }
    /**
     * 获取对应的DAO实例
     * @param name - DAO的名称
     * @protected
     * @returns DAO实例对象
     */
    getDAOInstance(name) {
        return BeanFactory_1.default.createBean(name);
    }
}
exports.default = CommonService;
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