Mongo X

Table of Content

• Features
  • Collection Methods
  • Docker
  • Query Operators
  • Update Operators
• Examples
  • Collection
  • Filter
• License

Features

Collection Methods

	Method	Function
✔️	db.collection.count()	collection.Count()
✔️	db.collection.delete()	collection.Delete()
✔️	db.collection.find()	collection.Find()
✔️	db.collection.findMany()	collection.FindMany()
✔️	db.collection.insert()	collection.Insert()
✔️	db.collection.replaceOne()	collection.Replace()

Docker

Mongo in Docker is useful for testing purposes. Please, check *_test.go files in the /collection directory for examples.

package main

import (
	"context"

	"entrlcom.dev/mongox/docker"
)

func main() {
	ctx := context.Background()

	mongo, err := docker.NewMongo(ctx)
	if err != nil {
		// TODO: Handle error.
		return
	}

	defer func() {
		// TODO: Handle error.
		_ = mongo.Shutdown(ctx) //nolint:errcheck // OK.
	}()

	client := mongo.GetClient()

	// ...
}

Query Operators

Array Query Operators

	Operator	Function
❌	$all
✔️	$elemMatch	query.ElemMatch()
❌	$size

Bitwise Query Operators

	Operator	Function
❌	$bitsAllClear
❌	$bitsAllSet
❌	$bitsAnyClear
❌	$bitsAnySet

Comparison Query Operators

	Operator	Function
✔️	$eq	query.Eq()
✔️	$gt	query.Gt()
✔️	$gte	query.Gte()
✔️	$in	query.In()
✔️	$lt	query.Lt()
✔️	$lte	query.Lte()
✔️	$ne	query.Ne()
✔️	$nin	query.Nin()

Element Query Operators

	Operator	Function
❌	$exists
❌	$type

Evaluation Query Operators

	Operator	Function
❌	$expr
❌	$jsonSchema
❌	$mod
❌	$regex
❌	$text
❌	$where

Geospatial Query Operators

	Operator	Function
❌	box
❌	center
❌	centerSphere
❌	geoIntersects
❌	geoWithin
❌	geometry
❌	maxDistance
❌	minDistance
❌	near
❌	nearSphere
❌	polygon

Logical Query Operators

	Operator	Function
✔️	$and	query.And()
✔️	$or	query.Or()
✔️	$nor	query.Nor()
✔️	$not	query.Not()

Update Operators

Array Update Operators

	Operator	Function
❌	$addToSet
❌	$each
❌	$pop
❌	$position
❌	$pull
❌	$pullAll
❌	$push
❌	$slice
❌	$sort

Bitwise Update Operators

	Operator	Function
❌	$bit

Field Update Operators

	Operator	Function
❌	$currentDate
❌	$inc
❌	$max
❌	$min
❌	$mul
❌	$rename
❌	$set
❌	$setOnInsert
❌	$unset

Examples

Collection

package main

import (
	"context"
	"time"

	"entrlcom.dev/mongox/collection"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

type Person struct {
	DataOfBirth time.Time `bson:"data_of_birth,omitempty"`
	Name        string    `bson:"name,omitempty"`
	TimeCreated time.Time `bson:"time_created,omitempty"`
}

type Repository struct {
	client     *mongo.Client
	collection *mongo.Collection
}

func (x Repository) Create(ctx context.Context, person Person) error {
	return collection.Insert[Person](x.collection).Insert(ctx, person)
}

func NewRepository(client *mongo.Client) Repository {
	return Repository{
		client:     client,
		collection: client.Database("example").Collection("person"),
	}
}

func main() {
	ctx := context.Background()

	client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://127.0.0.1:27017"))
	if err != nil {
		// TODO: Handle error.
		return
	}

	repository := NewRepository(client)

	if err := repository.Create(ctx, Person{
		DataOfBirth: time.Date(2020, time.May, 15, 0, 0, 0, 0, time.UTC),
		Name:        "John Doe",
		TimeCreated: time.Now().UTC(),
	}); err != nil {
		// TODO: Handle error.
		return
	}

	// ...
}

Query Operator

package main

import (
	"entrlcom.dev/mongox/operator/query"
)

func main() {
	filter := query.And(
		query.Or(
			query.Eq().Field("name").String("Jane"),
			query.Eq().Field("name").String("John"),
		),
		query.Eq().Field("id").String("1"),
	)

	// {
	//   "$and": [
	//     {
	//       "$or": [
	//         {
	//           "name": {
	//             "$eq": "Jane"
	//           }
	//         },
	//         {
	//           "name": {
	//             "$eq": "John"
	//           }
	//         }
	//       ]
	//     },
	//     {
	//       "id": {
	//         "$eq": "1"
	//       }
	//     }
	//   ]
	// }
}

License

MIT