sql-repository | SQL Repository implementation | Database library
kandi X-RAY | sql-repository Summary
kandi X-RAY | sql-repository Summary
SQL Repository library aims to reduce the time spent writing repositories. Motivation for this library was the boredom of writing SQL or using query builders to do the same thing over and over again in multiple projects. SQL Repository allows you to fetch, paginate and operate with data easily without adding overhead and following good practices.
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Top functions reviewed by kandi - BETA
- Applies filters .
- Find all pages .
- Adds a set of values .
- Fetches records by criteria .
- Returns the number of records in the collection .
- Sorts the given query builder .
- Map field map .
- Hydrate an array .
- Find records by distinct fields .
- Get registered on .
sql-repository Key Features
sql-repository Examples and Code Snippets
Community Discussions
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QUESTION
I am trying to understand how should I implement a composition root in a project.
From what I have red, if use the composition root the wrong way (for example, by referencing it in lots of place in your application code), you will end up with the service locator.
Let me show you an example of a projcet with out a compositon root.
I have the following project structure:
- server.ts
- domain.ts
- application.ts
- api.ts
- sql-repository
server.ts:
This file imports the API and initializes the server.
...ANSWER
Answered 2019-Aug-24 at 09:42To give some scope and definitions of the term Composition Root, here are good quotes by Mark Seemann in two related articles:
Where should we compose object graphs?
As close as possible to the application's entry point.
What is a Composition Root?
ImplicationsA Composition Root is a (preferably) unique location in an application where modules are composed together.
The Composition Root is an application infrastructure component.
A Composition Root is application-specific; it's what defines a single application. After having written nice, decoupled code throughout your code base, the Composition Root is where you finally couple everything, from data access to (user) interfaces.
In other words, your api.ts
could be seen as the entry point of your server application, so it is perfectly fine to compose your object graph in it. You could also
- choose
server.ts
or - define a separate DI module like
composition-root.ts
which does all the composing and is imported byserver.ts
orapi.ts
(even more cohesive).
More important here is, that you have a unique location near/in your application entry point of your project which is responsible for creating/composing the dependencies.
ExampleLet's take your concrete example and presume we want to do all composing stuff in composition-root.ts
imported by api.ts
. Your dependency graph looks like this (-->
means an import here):
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