W-orm-mdb NPM | npm.io

w-orm-mdb

An operator for access mdb database in nodejs.

Documentation

To view documentation or get support, visit docs.

Installation

Using npm(ES6 module):

Note: w-orm-mdb is mainly dependent on node-adodb and w-orm-reladb.

npm i w-orm-mdb

Example by js settings

Link: [dev source code]
import fs from 'fs'
import wo from 'w-orm-mdb'

let username = '' let password = '' let opt = { url: mdb://${username}:${password}, db: 'worm', cl: 'users', fdModels: './models', // modelType: 'js', //default // autoGenPK: false, storage: './worm.mdb', }

//因worm.mdb可能被修改, 先刪除再由worm_def.mdb複製一份來用 if (fs.existsSync(opt.storage)) { fs.unlinkSync(opt.storage) } fs.copyFileSync('./worm_def.mdb', opt.storage)

let rs = { id: 'id-peter', name: 'peter', value: 123, }, { id: 'id-rosemary', name: 'rosemary', value: 123.456, }, { id: '', name: 'kettle', value: 456, },

let rsm = { id: 'id-peter', name: 'peter(modify)' }, { id: 'id-rosemary', name: 'rosemary(modify)' }, { id: '', name: 'kettle(modify)' },

async function test() { //測試mdb

//w
let w = wo(opt)


//on
w.on('change', function(mode, data, res) {
    console.log('change', mode)
})
w.on('error', function(err) {
    console.log('error', err)
})


//delAll
await w.delAll()
    .then(function(msg) {
        console.log('delAll then', msg)
    })
    .catch(function(msg) {
        console.log('delAll catch', msg)
    })


//insert
await w.insert(rs)
    .then(function(msg) {
        console.log('insert then', msg)
    })
    .catch(function(msg) {
        console.log('insert catch', msg)
    })


//save
await w.save(rsm, { autoInsert: false })
    .then(function(msg) {
        console.log('save then', msg)
    })
    .catch(function(msg) {
        console.log('save catch', msg)
    })


//select all
let ss = await w.select()
console.log('select all', ss)


//select
let so = await w.select({ id: 'id-rosemary' })
console.log('select', so)


//select by $and, $gt, $lt
let spa = await w.select({ '$and': [{ value: { '$gt': 123 } }, { value: { '$lt': 200 } }] })
console.log('select by $and, $gt, $lt', spa)


//select by $or, $gte, $lte
let spb = await w.select({ '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 200 } }] })
console.log('select by $or, $gte, $lte', spb)


//select by $or, $and, $ne, $in, $nin (access mdb not support)
let spc = await w.select({ '$or': [{ '$and': [{ value: { '$ne': 123 } }, { value: { '$in': [123, 321, 123.456, 456] } }, { value: { '$nin': [456, 654] } }] }, { '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 400 } }] }] })
console.log('select by $or, $and, $ne, $in, $nin', spc)


//select by regex
let sr = await w.select({ name: { $regex: 'PeT', $options: '$i' } })
console.log('selectReg', sr)


//del
let d = []
if (ss) {
    d = ss.filter(function(v) {
        return v.name !== 'kettle'
    })
}
await w.del(d)
    .then(function(msg) {
        console.log('del then', msg)
    })
    .catch(function(msg) {
        console.log('del catch', msg)
    })

} test().catch((err) => console.log('err:', err)) // change delAll // delAll then { n: 0, nDeleted: 0, ok: 1 } // change insert // insert then { n: 3, nInserted: 3, ok: 1 } // change save // save then // { n: 1, nModified: 1, ok: 1 }, // { n: 1, nModified: 1, ok: 1 }, // { n: 0, nModified: 0, ok: 1 } //autoInsert=false // { n: 1, nInserted: 1, ok: 1 } //autoInsert=true // // select all // { id: 'id-peter', name: 'peter(modify)', value: 123 }, // { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 }, // { id: '{random id}', name: 'kettle', value: 456 } // // select // { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 } // // select by $and, $gt, $lt // { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 } // // select by $or, $gte, $lte // { id: '{random id}', name: 'kettle', value: 456 } // // select by $or, $and, $ne, $in, $nin // { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 }, // { id: '{random id}', name: 'kettle', value: 456 } // // selectReg // { id: 'id-peter', name: 'peter(modify)', value: 123 } // // change del // del then // { n: 1, nDeleted: 1, ok: 1 }, // { n: 1, nDeleted: 1, ok: 1 } //

#### Example by json settings 
> **Link:** [[dev source code](https://github.com/yuda-lyu/w-orm-mdb/blob/main/g-json.mjs)]
```alias
import fs from 'fs'
import wo from 'w-orm-mdb'


let username = ''
let password = ''
let opt = {
    url: `mdb://${username}:${password}`,
    db: 'worm',
    cl: 'users',
    fdModels: './models',
    modelType: 'json',
    // autoGenPK: false,
    storage: './worm.mdb',
}

//因worm.mdb可能被修改, 先刪除再由worm_def.mdb複製一份來用
if (fs.existsSync(opt.storage)) {
    fs.unlinkSync(opt.storage)
}
fs.copyFileSync('./worm_def.mdb', opt.storage)

let rs = [
    {
        id: 'id-peter',
        name: 'peter',
        value: 123,
    },
    {
        id: 'id-rosemary',
        name: 'rosemary',
        value: 123.456,
    },
    {
        id: '',
        name: 'kettle',
        value: 456,
    },
]

let rsm = [
    {
        id: 'id-peter',
        name: 'peter(modify)'
    },
    {
        id: 'id-rosemary',
        name: 'rosemary(modify)'
    },
    {
        id: '',
        name: 'kettle(modify)'
    },
]

async function test() {
    //測試mdb


    //w
    let w = wo(opt)


    //on
    w.on('change', function(mode, data, res) {
        console.log('change', mode)
    })
    w.on('error', function(err) {
        console.log('error', err)
    })


    //delAll
    await w.delAll()
        .then(function(msg) {
            console.log('delAll then', msg)
        })
        .catch(function(msg) {
            console.log('delAll catch', msg)
        })


    //insert
    await w.insert(rs)
        .then(function(msg) {
            console.log('insert then', msg)
        })
        .catch(function(msg) {
            console.log('insert catch', msg)
        })


    //save
    await w.save(rsm, { autoInsert: false })
        .then(function(msg) {
            console.log('save then', msg)
        })
        .catch(function(msg) {
            console.log('save catch', msg)
        })


    //select all
    let ss = await w.select()
    console.log('select all', ss)


    //select
    let so = await w.select({ id: 'id-rosemary' })
    console.log('select', so)


    //select by $and, $gt, $lt
    let spa = await w.select({ '$and': [{ value: { '$gt': 123 } }, { value: { '$lt': 200 } }] })
    console.log('select by $and, $gt, $lt', spa)


    //select by $or, $gte, $lte
    let spb = await w.select({ '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 200 } }] })
    console.log('select by $or, $gte, $lte', spb)


    //select by $or, $and, $ne, $in, $nin (access mdb not support)
    let spc = await w.select({ '$or': [{ '$and': [{ value: { '$ne': 123 } }, { value: { '$in': [123, 321, 123.456, 456] } }, { value: { '$nin': [456, 654] } }] }, { '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 400 } }] }] })
    console.log('select by $or, $and, $ne, $in, $nin', spc)


    //select by regex
    let sr = await w.select({ name: { $regex: 'PeT', $options: '$i' } })
    console.log('selectReg', sr)


    //del
    let d = []
    if (ss) {
        d = ss.filter(function(v) {
            return v.name !== 'kettle'
        })
    }
    await w.del(d)
        .then(function(msg) {
            console.log('del then', msg)
        })
        .catch(function(msg) {
            console.log('del catch', msg)
        })


}
test().catch((err) => console.log('err:', err))
// change delAll
// delAll then { n: 0, nDeleted: 0, ok: 1 }
// change insert
// insert then { n: 3, nInserted: 3, ok: 1 }
// change save
// save then [
//   { n: 1, nModified: 1, ok: 1 },
//   { n: 1, nModified: 1, ok: 1 },
//   { n: 0, nModified: 0, ok: 1 } //autoInsert=false
//   { n: 1, nInserted: 1, ok: 1 } //autoInsert=true
// ]
// select all [
//   { id: 'id-peter', name: 'peter(modify)', value: 123 },
//   { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 },
//   { id: '{random id}', name: 'kettle', value: 456 }
// ]
// select [
//   { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 }
// ]
// select by $and, $gt, $lt [
//   { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 }
// ]
// select by $or, $gte, $lte [
//   { id: '{random id}', name: 'kettle', value: 456 }
// ]
// select by $or, $and, $ne, $in, $nin [
//   { id: 'id-rosemary', name: 'rosemary(modify)', value: 123.456 },
//   { id: '{random id}', name: 'kettle', value: 456 }
// ]
// selectReg [
//   { id: 'id-peter', name: 'peter(modify)', value: 123 }
// ]
// change del
// del then [
//   { n: 1, nDeleted: 1, ok: 1 },
//   { n: 1, nDeleted: 1, ok: 1 }
// ]

Example for encryption by js settings

Link: [dev source code]
import fs from 'fs'
import wo from 'w-orm-mdb'

let username = 'username' let password = 'password' let opt = { url: mdb://${username}:${password}, //username:password db: 'worm', cl: 'users', fdModels: './models', // modelType: 'js', //default // autoGenPK: false, storage: './worm.mdb', useEncryption: true, }

//因worm.mdb可能被修改, 先刪除再由worm_encryption_def.mdb複製一份來用 if (fs.existsSync(opt.storage)) { fs.unlinkSync(opt.storage) } fs.copyFileSync('./worm_encryption_def.mdb', opt.storage) //複製加密版, 密碼為username:password

let rs = { id: 'id-peter', name: 'peter', value: 123, }, { id: 'id-rosemary', name: 'rosemary', value: 123.456, }, { id: '', name: 'kettle', value: 456, },

let rsm = { id: 'id-peter', name: 'peter(modify)' }, { id: 'id-rosemary', name: 'rosemary(modify)' }, { id: '', name: 'kettle(modify)' },

async function test() { //測試mdb

//w
let w = wo(opt)


//on
w.on('change', function(mode, data, res) {
    console.log('change', mode)
})
w.on('error', function(err) {
    console.log('error', err)
})


//delAll
await w.delAll()
    .then(function(msg) {
        console.log('delAll then', msg)
    })
    .catch(function(msg) {
        console.log('delAll catch', msg)
    })


//insert
await w.insert(rs)
    .then(function(msg) {
        console.log('insert then', msg)
    })
    .catch(function(msg) {
        console.log('insert catch', msg)
    })


//save
await w.save(rsm, { autoInsert: false })
    .then(function(msg) {
        console.log('save then', msg)
    })
    .catch(function(msg) {
        console.log('save catch', msg)
    })


//select all
let ss = await w.select()
console.log('select all', ss)


//select
let so = await w.select({ id: 'id-rosemary' })
console.log('select', so)


//select by $and, $gt, $lt
let spa = await w.select({ '$and': [{ value: { '$gt': 123 } }, { value: { '$lt': 200 } }] })
console.log('select by $and, $gt, $lt', spa)


//select by $or, $gte, $lte
let spb = await w.select({ '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 200 } }] })
console.log('select by $or, $gte, $lte', spb)


//select by $or, $and, $ne, $in, $nin (access mdb not support)
let spc = await w.select({ '$or': [{ '$and': [{ value: { '$ne': 123 } }, { value: { '$in': [123, 321, 123.456, 456] } }, { value: { '$nin': [456, 654] } }] }, { '$or': [{ value: { '$lte': -1 } }, { value: { '$gte': 400 } }] }] })
console.log('select by $or, $and, $ne, $in, $nin', spc)


//select by regex
let sr = await w.select({ name: { $regex: 'PeT', $options: '$i' } })
console.log('selectReg', sr)


//del
let d = []
if (ss) {
    d = ss.filter(function(v) {
        return v.name !== 'kettle'
    })
}
await w.del(d)
    .then(function(msg) {
        console.log('del then', msg)
    })
    .catch(function(msg) {
        console.log('del catch', msg)
    })