133 lines
3.5 KiB
Markdown
133 lines
3.5 KiB
Markdown
Master Quest SQLite3
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============
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Master Quest is a brave new attempt at Data Mapping.
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It kinda looks like an ORM, but it isn't. It's not SQL, it's NoSQL with benefits.
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You get to choose which contraints to keep and which to forget.
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Guiding Principles
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* NoSQL (well, as far as you care)
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* Migrations don't suck
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* Harness the awesomeness of indexes
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* `deletedAt` to delete a record
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* `null` to delete a field
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* unindexed fields stored as json
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* ids should be one either
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* deterministic (duplicate records not okay, last `updatedAt` wins)
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* cryptographically random (duplicate records consolidated in application)
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* avoid mutating data (CRDT-ish style)
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* if it won't scale, don't fret it (no foreign key contraints)
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* `id` is simply named `id`
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* multi-key ids should be `sha256sum(key1 + key2 + key3)`
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* JavaScript is `camelCase`y, databases are `snake_case`y. We can handle that.
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* join tables are in alphabet order i.e. `foo`, `bar`, `bar_foo`
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TODO / In Progress
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* Multi-Master Replication
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* Relationships
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* currently detaches before saving (most important)
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* MongoDB / RethinkDB -ish queries
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* RealTime
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USAGE
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=====
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```bash
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npm install --save 'https://github.com/coolaj86/node-masterquest-sqlite3.git'
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```
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```javascript
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'use strict';
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// works with sqlite3, sqlcipher, and sqlite3-cluster
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var db = new (require('sqlite3').Database)('/tmp/data.sqlite3');
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require('masterquest-sqlite3').wrap(db, {
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modelname: 'Persons'
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, indices: [ 'firstName', 'lastName' ]
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, hasMany: [ 'children' ]
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}).then(function (mq) {
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// update (or create) deterministic record
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var john = {
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id: 'john.doe@email.com'
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, firstName: 'john'
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, lastName: 'doe'
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, dog: { name: 'ralph', color: 'gold' }
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, children: [ 'stacey@email.com' ]
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};
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mq.Persons.upsert(john.id, john).then(function () {
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// note: if `dog` existed, it will be overwritten, not merged
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// note: `children` will be removed before save
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mq.Persons.get('john.doe@email.com').then(function (data) {
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// dog will be rehydrated from json
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// children will not be fetched and attached
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console.log(data);
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});
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});
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});
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```
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API
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===
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It's kinda CRUDdy... but don't let that scare you.
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* `upsert(id, data[, oldId])` - creates or updates based on existence in DB (use this)
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* modifies `createdAt` and or `updatedAt`
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* `create(id, obj)` - same as above, but fails if the object exists
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* `save(data[, oldId])` - (just don't use this, please) creates or updates based on presence of ID
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* `destroy(id)` - mark a record as `deletedAt` from DB
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* `get(id)` - grab one by id
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* `find(attrs, opts)` - grab many by indexable attributes
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* attrs
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* explicit `null` will find all (and requires that `limit` be set)
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* `{ foo: 2, bar: 6 }` will find records where `foo` is `2` *and* `bar` is `6`
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* opts
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* `orderBy`
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* `orderByDesc`
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* `limit`
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Schema
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======
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Anything that isn't in the schema
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* `indices` specifies an array of strings
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* `[ 'firstName', 'lastName' ]`
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* relationships are option and current only exclude during save
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* `hasMany`, `belongsTo`, `hasOne`, `belongsToMany`, `hasAndBelongsToMany`
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* `createdAt`, `updatedAt`, `deletedAt` timestamps are always added
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* turn off with `timestamps: false`
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* `id` is always `id`
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* change with `idname: 'myId'`
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Migrations
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----------
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You can only add indexes. You cannot rename or remove them.
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To add an index, simply change the schema.
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```javascript
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{ modelname: 'persons'
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, indices: [ 'firstName', 'lastName' ]
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, hasMany: [ 'children' ]
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}
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```
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LICENSE
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=======
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Dual-licensed MIT and Apache-2.0
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See LICENSE
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