README.md

metaquery

通过元数据定义查询对象提供数据服务

定义查询对象

const {
  MetaTable
} = require('@saas-plat/metaquery');

const BankAccountTable = MetaTable.createModel('BankAccountTable',{
  fields:{
    "Code": {type:"string",mapping:'code'},
    "Name": {type:"string",mapping:'name'},
    "NewBalance": "number"
  }
});

查询对象类型与服务

• 数据表
• 汇总表
• 树表
• 联合表

数据迁移

const datamigration = new Migration([BankAccountTable1], [BankAccountTable2]);
await datamigration.backup();
datamigration.onAction(()=>{
  // 升级规则
  ...
})
await datamigration.up('v1','v2');
await datamigration.dropback();