Golang Session.DatabaseNames方法代碼示例

func GeoNamesDbName(dbConn *mgo.Session, force bool) string {
	if force || (len(geoNamesDbName) == 0) {
		var last = ""
		dbNames, err := dbConn.DatabaseNames()
		if err != nil {
			panic(err)
		}
		for _, dbn := range dbNames {
			if strings.HasPrefix(dbn, "gn_") {
				last = dbn
			}
		}
		geoNamesDbName = last
	}
	return geoNamesDbName
}

func createDb(sourceDir string) {
	var err error
	var dbConn *mgo.Session
	var dbIndex, lastIndex = 0, 0
	var dbName, tmp string
	var dbNames []string
	var admins []*adminDiv
	var features = []string{}
	var timezones = []string{}
	var countries = []string{}
	fmt.Println("Connecting...")
	dbutil.Panic = true
	dbConn, err = dbutil.ConnectToGlobal()
	dbNames, err = dbConn.DatabaseNames()
	if err != nil {
		panic(err)
	}
	for _, dbName = range dbNames {
		if strings.HasPrefix(dbName, "gn_") {
			dbIndex++
		}
	}
	for {
		dbName = fmt.Sprintf("gn_%d", dbIndex)
		if stringutil.InSliceAt(dbNames, dbName) < 0 {
			break
		} else {
			dbIndex++
		}
	}
	createDbCollection(dbConn, dbName, path.Join(sourceDir, "timeZones.txt"), "t", true, false, func(index int, rec []string) bson.M {
		var n = strings.Replace(rec[0], "_", " ", -1)
		timezones = append(timezones, n)
		return bson.M{"_id": index - 1, "n": n, "g": stringutil.ToFloat32(rec[1]), "d": stringutil.ToFloat32(rec[2]), "r": stringutil.ToFloat32(rec[3])}
	})
	createDbCollection(dbConn, dbName, path.Join(sourceDir, "featureCodes_en.txt"), "f", false, false, func(index int, rec []string) bson.M {
		features = append(features, rec[0])
		return bson.M{"_id": index, "n": rec[0], "t": rec[1], "d": rec[2]}
	})
	createDbCollection(dbConn, dbName, path.Join(sourceDir, "countryInfo.txt"), "c", false, false, func(index int, rec []string) bson.M {
		/*
			#ISO	ISO3	ISO-Numeric	fips	Country					Capital				Area(in sq km)	Population	Continent	tld	CurrencyCode	CurrencyName	Phone	Postal Code Format	Postal Code Regex	Languages			geonameid	neighbours	EquivalentFipsCode
			AD		AND		020			AN		Andorra					Andorra la Vella	468				84000		EU			.ad	EUR				Euro			376		AD###				^(?:AD)*(\d{3})$	ca					3041565		ES,FR
			AE		ARE		784			AE		United Arab Emirates	Abu Dhabi			82880			4975593		AS			.ae	AED				Dirham			971												ar-AE,fa,en,hi,ur	290557		SA,OM
		*/
		countries = append(countries, rec[0])
		return bson.M{"_id": index, "i": rec[0], "i3": rec[1], "f": rec[2], "t": rec[4], "ca": rec[5], "co": rec[8], "d": rec[9], "cc": rec[10], "cn": rec[11], "p": rec[12], "l": stringutil.Split(rec[15], ","), "g": stringutil.ToInt(rec[16]), "n": stringutil.Split(rec[17], ",")}
	})
	createDbCollection(dbConn, dbName, path.Join(sourceDir, "zip_allCountries.txt"), "z", false, true, func(index int, rec []string) bson.M {
		var an = []string{stringutil.Title(rec[3]), stringutil.Title(rec[5]), stringutil.Title(rec[7])}
		var ac = []string{rec[4], rec[6], rec[8]}
		var ll, err = numutil.NewDvec2(rec[10], rec[9])
		var n = rec[2]
		var r = bson.M{"_id": index, "c": stringutil.InSliceAt(countries, rec[0]), "z": rec[1], "n": n}
		var words []string
		if (err == nil) && (ll.X >= geoutil.LonMin) && (ll.X <= geoutil.LonMax) && (ll.Y >= geoutil.LatMin) && (ll.Y <= geoutil.LatMax) {
			r["l"] = ll
		} else {
			return nil
		}
		r["a"], admins = findAdminIndex(admins, rec[0], ac[0], ac[1], ac[2], an)
		if len(n) > 0 {
			if n == strings.ToUpper(n) {
				n = stringutil.Title(n)
			}
			if words = stringutil.Split(n, " "); len(words) > 1 {
				n = ""
				for i, w := range words {
					if stringutil.InSliceAt(words, w) == i {
						n = stringutil.Concat(n, w, " ")
					}
				}
				r["n"] = n[0 : len(n)-1]
			} else {
				r["n"] = n
			}
		}
		return r
	})
	for i, ad := range admins {
		dbutil.Insert(dbConn, dbName, "a", fixupAdminDiv(bson.M{"_id": i, "a": stringutil.NonEmpties(true, ad.ac1, ad.ac2, ad.ac3, ad.ac4), "n": ad.n}, countries))
	}
	stringutil.ForEach(func(i int, s string) {
		createDbCollection(dbConn, dbName, path.Join(sourceDir, s), "a", false, false, func(index int, rec []string) bson.M {
			var a = stringutil.Split(rec[0], ".")
			var n, na = rec[1], rec[2]
			var r bson.M
			for _, ad := range admins {
				if (ad.ac1 == a[0]) && (ad.ac2 == a[1]) && ((len(a) == 2) || (ad.ac3 == a[2])) {
					return nil
				}
			}
			index += len(admins)
			if i == 0 {
				lastIndex = index
			} else {
				index = index + 1 + lastIndex
			}
			r = bson.M{"_id": index, "a": a, "g": stringutil.ToInt(rec[3]), "n": n, "na": na}
			return fixupAdminDiv(r, countries)
//.........這裏部分代碼省略.........