Golang Mongo find

mongo_find.go

package main

import (
	"fmt"
	"time"
	"os"
	"labix.org/v2/mgo"
	"labix.org/v2/mgo/bson"
)

type Person struct {
	ID			bson.ObjectId	`bson:"_id,omitempty"`
	Name		string			`bson:"nm"`
	Phone		string			`bson:"ph"`
	created		time.Time		`bson:"c,omitempty"`
}

func main() {
	//get session
	session, err := mgo.Dial("localhost")
	if err != nil {
		fmt.Printf("dial fail %v\n", err)
		os.Exit(1)
	}
	defer session.Close()

	//error check on every access
	session.SetSafe(&mgo.Safe{})

	//find record
	var person Person
	err = session.DB("test_db").C("people").Find(bson.M{"nm": "Gordon Sumner"}).One(&person)
	if err != nil {
		fmt.Printf("find fail %v\n", err)
		os.Exit(1)
	}

	fmt.Printf("find #1: person %v\n", person)

	err = session.DB("test_db").C("people").Find(bson.M{"nm": bson.M{"$regex": bson.RegEx{`Andy.*`, ""}}}).One(&person)
	if err != nil {
		fmt.Printf("find fail %v\n", err)
		os.Exit(1)
	}
	fmt.Printf("find #2: person %v\n", person)

	var people []Person
	err = session.DB("test_db").C("people").Find(bson.M{"ph": bson.M{"$regex": bson.RegEx{`^\+11.*`, ""}}}).All(&people)
	if err != nil {
		fmt.Printf("find fail %v\n", err)
		os.Exit(1)
	}
	fmt.Printf("find #3: people %v\n", people)

}