This will allow to register drivers like database/sql.

db.go

@@ -186,6 +186,8 @@ type Database interface {
 
 	Use(string) error
 	Drop() error
+
+	Setup(DataSource) error
 }
 
 // Collection methods.
@@ -323,3 +325,23 @@ func (item Item) GetBool(name string) bool {
 
 	return true
 }
+
+var wrappers = make(map[string]Database)
+
+func Register(name string, driver Database) {
+	if name == "" {
+		panic("db: Wrapper name cannot be nil.")
+	}
+	if _, ok := wrappers[name]; ok != false {
+		panic("db: Wrapper was already registered.")
+	}
+	wrappers[name] = driver
+}
+
+func Open(name string, settings DataSource) Database {
+	if _, ok := wrappers[name]; ok == false {
+		panic(fmt.Sprintf("db: Unknown wrapper: %s.", name))
+	}
+	wrappers[name].Setup(settings)
+	return wrappers[name]
+}

examples/mongo.go

+package main
+
+import (
+	"fmt"
+	"github.com/gosexy/db"
+	_ "github.com/gosexy/db/mongo"
+	"github.com/gosexy/sugar"
+)
+
+func main() {
+
+	sess := db.Open("mongo", db.DataSource{Host: "127.0.0.1", Database: "gosexy-dev"})
+
+	if sess == nil {
+		panic("Could not open connection to MongoDB.")
+	}
+
+	defer sess.Close()
+
+	sess.Drop()
+
+	animals := sess.Collection("animals")
+
+	animals.Append(db.Item{
+		"animal": "Bird",
+		"young":  "Chick",
+		"female": "Hen",
+		"male":   "Cock",
+		"group":  "flock",
+	})
+
+	animals.Append(db.Item{
+		"animal": "Bovidae",
+		"young":  "Calf",
+		"female": "Cow",
+		"male":   "Bull",
+		"group":  "Herd",
+	})
+
+	animals.Append(db.Item{
+		"animal": "Canidae",
+		"young":  sugar.List{"Puppy", "Pup"},
+		"female": "Bitch",
+		"male":   "Dog",
+		"group":  "Pack",
+	})
+
+	items := animals.FindAll()
+
+	for _, item := range items {
+		fmt.Printf("animal: %s, young: %s\n", item["animal"], item["young"])
+	}
+
+}

mongo/mongo.go

@@ -36,6 +36,10 @@ import (
 	"time"
 )
 
+func init() {
+	db.Register("mongo", &MongoDataSource{})
+}
+
 // Session
 type MongoDataSource struct {
 	config   db.DataSource
@@ -506,6 +510,11 @@ func Session(config db.DataSource) db.Database {
 	return m
 }
 
+func (m *MongoDataSource) Setup(config db.DataSource) error {
+	m.config = config
+	return m.Open()
+}
+
 // Sets the active database.
 func (m *MongoDataSource) Use(database string) error {
 	m.config.Database = database