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Interface

package dao

import "credential-management/src/internal/model"

type Client interface {
	Connect() error
	Disconnect() error
	InsertLookup(tr *Transaction, credentialLookup *model.CredentialLookup) error
	UpdateLookup(tr *Transaction, credentialLookup *model.CredentialLookup) error
	GetLookupById(tr *Transaction, id string) (*model.CredentialLookup, error)
	GetLookupByField(tr *Transaction, field string, value string) ([]*model.CredentialLookup, error)
	DeleteLookup(tr *Transaction, id string) error
}

Type Implementing Interface

type MongoClient struct {
    connectURI string
    dbName     string
    client     *mongo.Client
    collection *mongo.Collection
}

func NewMongoClient(host string) Client {

 ...
    return client
}

func (m *MongoClient) Connect() error {
....

Convert from Interface to Type

client := NewMongoClient("host")

//cast to MongoClient to set mt.Coll
var mongoClient = client.(*MongoClient)

//perform actions only available in mongoClient type
mongoClient.collection = mt.Coll







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