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trantor/database.go
2012-08-21 11:25:02 +02:00

61 lines
1 KiB
Go

package main
import (
"labix.org/v2/mgo"
"labix.org/v2/mgo/bson"
)
type Book struct {
Id string `bson:"_id"`
Title string
Author []string
Contributor string
Publisher string
Description string
Subject []string
Date string
Lang []string
Type string
Format string
Source string
Relation string
Coverage string
Rights string
Meta string
Path string
Cover string
CoverSmall string
Keywords []string
}
/* optional parameters: length and start index
*
* Returns: list of books, number found and err
*/
func GetBook(coll *mgo.Collection, query bson.M, r ...int) (books []Book, num int, err error) {
var start, length int
if len(r) > 0 {
length = r[0]
if len(r) > 1 {
start = r[1]
}
}
q := coll.Find(query)
num, err = q.Count()
if err != nil {
return
}
if start != 0 {
q = q.Skip(start)
}
if length != 0 {
q = q.Limit(length)
}
err = q.All(&books)
for i, b := range books {
books[i].Id = bson.ObjectId(b.Id).Hex()
}
return
}