114 lines
4.8 KiB
Markdown
114 lines
4.8 KiB
Markdown
# smartdata
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do more with data
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## Availabililty
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[](https://www.npmjs.com/package/smartdata)
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[](https://GitLab.com/pushrocks/smartdata)
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[](https://github.com/pushrocks/smartdata)
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[](https://pushrocks.gitlab.io/smartdata/)
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## Status for master
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[](https://GitLab.com/pushrocks/smartdata/commits/master)
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[](https://GitLab.com/pushrocks/smartdata/commits/master)
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[](https://www.npmjs.com/package/smartdata)
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[](https://david-dm.org/pushrocks/smartdata)
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[](https://www.bithound.io/github/pushrocks/smartdata/master/dependencies/npm)
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[](https://www.bithound.io/github/pushrocks/smartdata)
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[](https://nodejs.org/dist/latest-v6.x/docs/api/)
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[](https://nodejs.org/dist/latest-v6.x/docs/api/)
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[](http://standardjs.com/)
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## Usage
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Use TypeScript for best in class instellisense.
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smartdata is an ODM that adheres to TypeScript practices and uses classes to organize data.
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It uses MongoDB or NeDb as persistent storage.
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## Intention
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There are many ODMs out there, however when we searched for an ODM that uses TypeScript,
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acts smart while still embracing the NoSQL idea we didn't find a matching solution.
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This is why we started smartdata.
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How MongoDB terms map to smartdata classes
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MongoDB term | smartdata class
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--- | ---
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Database | smartdata.Db
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Collection | smartdata.DbCollection
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Document | smartdata.DbDoc
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### class Db
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represents a Database. Naturally it has .connect() etc. methods on it.
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Since it is a class you can have multiple DBs defined.
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```javascript
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import * as smartdata from 'smartdata'
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// mongodb
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let myDb1 = new smartdata.Db('someConnectionUrl')
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let myDb2 = new smartdata.Db('someConnectionUrl')
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// nedb
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let myDb3 = new smartdata('/some/path/for/persistence', 'nedb') // you may set first argument to null for just in memory db
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myDb1.connect()
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myDb2.connect()
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// continues in next block...
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```
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### class DbCollection
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represents a collection of objects.
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A collection is defined by the object class (that is extending smartdata.dbdoc) it respresents
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So to get to get access to a specific collection you document
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```javascript
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// continues from the block before...
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@Collection(myDb1)
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class myObject extends smartdata.DbDoc<myObject> { // read the next block about DbDoc
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@smartdata.svDb() property1: string // @smartdata.svDb() marks the property for db save
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property2: number // this one is not marked, so it won't be save upon calling this.save()
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constructor(optionsArg:{
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property1: string,
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property2: number
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}) {
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super()
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}
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}
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let myCollection = myDb1.getCollectionByName<myObject>(myObject)
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// start to instantiate classes from scratch or database
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```
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> Alert: You NEVER instantiate a collection.
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This is done for you!!!
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### class DbDoc
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represents a individual document in a collection
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and thereby is ideally suited to extend the class you want to actually store.
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DbDoc extends your class with the following methods:
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* `.save()` will save (or update) the object you call it on only. Any referenced non-savable objects will not get stored.
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* `.saveDeep()` does the same like `.save()`.
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In addition it will look for properties that reference an object
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that extends DbDoc as well and call .saveDeep() on them as well.
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Loops are prevented
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So now we can **store** instances of classes to Db...
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How do we **get** a new class instance from a Doc in the DB?
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## TypeScript
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How does TypeScript play into this?
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Since you define your classes in TypeScript and types flow through smartdata in a generic way
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you should get all the Intellisense and type checking you love when using smartdata.
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smartdata itself also bundles typings.
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So you don't need to install any additional types when importing smartdata.
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For further information read the linked docs at the top of this README.
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> MIT licensed | **©** [Lossless GmbH](https://lossless.gmbh)
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| By using this npm module you agree to our [privacy policy](https://lossless.gmbH/privacy.html)
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[](https://push.rocks)
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