memory-orm v0.7.0

Install

yarn add memory-orm

Quick Start

const { Rule, Set, Query } = require('memory-orm')

new Rule('todo').schema(function () {
  this.has_many('checks')
})

new Rule('check').schema(function () {
  this.belongs_to('todo')
})

Set.todo.merge([
  {
    _id: 1,
    label: '歯を磨く',
  },
  {
    _id: 2,
    label: '宿題をする',
  },
  {
    _id: 3,
    label: 'お風呂はいる',
  },
])

Set.check.merge([
  {
    _id: 1,
    todo_id: 1,
    label: '右上',
    checked: true,
  },
  {
    _id: 2,
    todo_id: 1,
    label: '左上',
    checked: true,
  },
  {
    _id: 3,
    todo_id: 3,
    label: 'シャワー浴びる',
    checked: false,
  },
  {
    _id: 4,
    todo_id: 3,
    label: '肩まで入って１０数える',
    checked: true,
  },
])

Query.todos.pluck('label')
Query.todos.find(3).checks.where({ checked: true }).list
Query.todos.find(3).checks.where({ checked: false }).list

map reduce

const { Rule, Set, Query } = require("memory-orm");

new Rule("position").schema(function() {
  this.model = class model extends this.model {
    static map_reduce (o, emit) {
      for ( const p of o.position ) {
        emit("position", { count: 1, all: p, min: p, max: p})
      }
    }
  }
});

Set.position.merge([{
  "_id": "x1",
  "position": [40,60,80,100,200]
},{
  "_id": "y1",
  "position": [70,190,220,160,240]
},{
  "_id": "x2",
  "position": [40,60,80,100,200]
},{
  "_id": "y2",
  "position": [20,90,20,60,40]
}])

{ count, all, avg, density, min, min_is, max, max_is, range } = Query.where({_id: "x1"}).reduce.position

order

const { Rule, Set, Query } = require('memory-orm')

new Rule('check').schema(function () {
  this.model = class model extends this.model {
    static map_reduce(o, emit) {
      emit('asc', { list: true })
      emit('desc', { list: true })
    }
    static order(o, emit) {
      emit('asc', 'list', { sort: ['label', 'asc'] })
      emit('desc', 'list', { sort: ['label', 'desc'] })
    }
  }
})

Set.check.merge([
  {
    _id: 1,
    todo_id: 1,
    label: '右上',
    checked: true,
  },
  {
    _id: 2,
    todo_id: 1,
    label: '左上',
    checked: true,
  },
  {
    _id: 3,
    todo_id: 3,
    label: 'シャワー浴びる',
    checked: false,
  },
  {
    _id: 4,
    todo_id: 3,
    label: '肩まで入って１０数える',
    checked: true,
  },
])

Query.checks.reduce.asc.list.pluck('label')
Query.checks.reduce.desc.list.pluck('label')

class list

Model

List

const { list } = Query.checks.reduce.asc
list.pluck('label')
list.first
list.head
list.tail
list.last

Rule

new Rule('todo').schema(function () {
  this.key_by(function () {
    return this._id
  })
  this.deploy(function (model) {
    this.search_words = this.label
  })
  this.scope(function (all) {
    return {
      scan: (word) => all.where({ checked: true }).search(word),
    }
  })
})

State

Set.< base name >

const {
  checks: {
    $sort,
    $memory,
    $format,
  }
} = State.transaction(=>{
  Set.check.add({
    _id: 10,
    todo_id: 1,
    label: "新しい項目",
    checked: true
  })
  Set.check.del({ _id: 10 })
})
State.store(JSON.parse(JSON.stringify({ checks: { $sort, $memory, $format }})))

Query.< plural name >

Query.positions.in({ position: 100 }).pluck('_id')
Query.positions.in({ position: [100, 90] }).pluck('_id')
Query.checks.shuffle().pluck('label')
Query.checks.sort('label').pluck('label')
Query.checks.sort('label', 'desc').pluck('label')
Query.checks.order({ sort: ['label', 'desc'] }).pluck('label')
Query.checks.page(3).list[0][0]
Query.checks.page(3).list[0][1]
Query.checks.page(3).list[0][2]
Query.checks.page(3).list[1][0]