diff --git a/mongo/collection.go b/mongo/collection.go
index a4adadddc9b1030f1d47893123ee34a2c3b47cee..223e6ebd91137fa7a9b98ab1782f96668c73b651 100644
--- a/mongo/collection.go
+++ b/mongo/collection.go
@@ -33,7 +33,7 @@ import (
"upper.io/db"
)
-// Mongodb Collection
+// Collection represents a mongodb collection.
type Collection struct {
name string
parent *Source
@@ -49,8 +49,15 @@ type chunks struct {
GroupBy []interface{}
}
-func (self *Collection) Find(terms ...interface{}) db.Result {
+var (
+ // idCache should be a struct if we're going to cache more than just
+ // _id field here
+ idCache = make(map[reflect.Type]string, 0)
+ idCacheMutex sync.RWMutex
+)
+// Find creates a result set with the given conditions.
+func (col *Collection) Find(terms ...interface{}) db.Result {
queryChunks := &chunks{}
// No specific fields given.
@@ -58,23 +65,19 @@ func (self *Collection) Find(terms ...interface{}) db.Result {
queryChunks.Fields = []string{"*"}
}
- queryChunks.Conditions = self.compileQuery(terms...)
-
- if debugEnabled() == true {
- debugLogQuery(queryChunks)
- }
+ queryChunks.Conditions = col.compileQuery(terms...)
// Actually executing query.
- result := &Result{
- self,
- queryChunks,
- nil,
+ r := &result{
+ c: col,
+ queryChunks: queryChunks,
}
- return result
+ return r
}
-// Transforms conditions into something *mgo.Session can understand.
+// compileStatement transforms conditions into something *mgo.Session can
+// understand.
func compileStatement(cond db.Cond) bson.M {
conds := bson.M{}
@@ -118,14 +121,15 @@ func compileStatement(cond db.Cond) bson.M {
return conds
}
-// Compiles terms into something *mgo.Session can understand.
-func (self *Collection) compileConditions(term interface{}) interface{} {
+// compileConditions compiles terms into something *mgo.Session can
+// understand.
+func (col *Collection) compileConditions(term interface{}) interface{} {
switch t := term.(type) {
case []interface{}:
values := []interface{}{}
- for i, _ := range t {
- value := self.compileConditions(t[i])
+ for i := range t {
+ value := col.compileConditions(t[i])
if value != nil {
values = append(values, value)
}
@@ -135,15 +139,15 @@ func (self *Collection) compileConditions(term interface{}) interface{} {
}
case db.Or:
values := []interface{}{}
- for i, _ := range t {
- values = append(values, self.compileConditions(t[i]))
+ for i := range t {
+ values = append(values, col.compileConditions(t[i]))
}
condition := bson.M{`$or`: values}
return condition
case db.And:
values := []interface{}{}
- for i, _ := range t {
- values = append(values, self.compileConditions(t[i]))
+ for i := range t {
+ values = append(values, col.compileConditions(t[i]))
}
condition := bson.M{`$and`: values}
return condition
@@ -151,17 +155,16 @@ func (self *Collection) compileConditions(term interface{}) interface{} {
return compileStatement(t)
case db.Constrainer:
return compileStatement(t.Constraint())
- //default:
- // panic(fmt.Sprintf(db.ErrUnknownConditionType.Error(), reflect.TypeOf(t)))
}
return nil
}
-// Compiles terms into something that *mgo.Session can understand.
-func (self *Collection) compileQuery(terms ...interface{}) interface{} {
+// compileQuery compiles terms into something that *mgo.Session can
+// understand.
+func (col *Collection) compileQuery(terms ...interface{}) interface{} {
var query interface{}
- compiled := self.compileConditions(terms)
+ compiled := col.compileConditions(terms)
if compiled != nil {
conditions := compiled.([]interface{})
@@ -171,10 +174,10 @@ func (self *Collection) compileQuery(terms ...interface{}) interface{} {
// this should be correct.
// query = map[string]interface{}{"$and": conditions}
- // trying to workaround https://jira.mongodb.org/browse/SERVER-4572
+ // attempt to workaround https://jira.mongodb.org/browse/SERVER-4572
mapped := map[string]interface{}{}
for _, v := range conditions {
- for kk, _ := range v.(map[string]interface{}) {
+ for kk := range v.(map[string]interface{}) {
mapped[kk] = v.(map[string]interface{})[kk]
}
}
@@ -188,13 +191,14 @@ func (self *Collection) compileQuery(terms ...interface{}) interface{} {
return query
}
-func (self *Collection) Name() string {
- return self.collection.Name
+// Name returns the name of the table or tables that form the collection.
+func (col *Collection) Name() string {
+ return col.collection.Name
}
-// Deletes all the rows within the collection.
-func (self *Collection) Truncate() error {
- err := self.collection.DropCollection()
+// Truncate deletes all rows from the table.
+func (col *Collection) Truncate() error {
+ err := col.collection.DropCollection()
if err != nil {
return err
@@ -203,27 +207,27 @@ func (self *Collection) Truncate() error {
return nil
}
-// Appends an item (map or struct) into the collection.
-func (self *Collection) Append(item interface{}) (interface{}, error) {
+// Append inserts an item (map or struct) into the collection.
+func (col *Collection) Append(item interface{}) (interface{}, error) {
var err error
- id := getId(item)
+ id := getID(item)
- if self.parent.VersionAtLeast(2, 6, 0, 0) {
+ if col.parent.versionAtLeast(2, 6, 0, 0) {
// this breaks MongoDb older than 2.6
- if _, err = self.collection.Upsert(bson.M{"_id": id}, item); err != nil {
+ if _, err = col.collection.Upsert(bson.M{"_id": id}, item); err != nil {
return nil, err
}
} else {
// Allocating a new ID.
- if err = self.collection.Insert(bson.M{"_id": id}); err != nil {
+ if err = col.collection.Insert(bson.M{"_id": id}); err != nil {
return nil, err
}
// Now append data the user wants to append.
- if err = self.collection.Update(bson.M{"_id": id}, item); err != nil {
+ if err = col.collection.Update(bson.M{"_id": id}, item); err != nil {
// Cleanup allocated ID
- self.collection.Remove(bson.M{"_id": id})
+ col.collection.Remove(bson.M{"_id": id})
return nil, err
}
}
@@ -245,9 +249,9 @@ func (self *Collection) Append(item interface{}) (interface{}, error) {
return id, nil
}
-// Returns true if the collection exists.
-func (self *Collection) Exists() bool {
- query := self.parent.database.C(`system.namespaces`).Find(map[string]string{`name`: fmt.Sprintf(`%s.%s`, self.parent.database.Name, self.collection.Name)})
+// Exists returns true if the collection exists.
+func (col *Collection) Exists() bool {
+ query := col.parent.database.C(`system.namespaces`).Find(map[string]string{`name`: fmt.Sprintf(`%s.%s`, col.parent.database.Name, col.collection.Name)})
count, _ := query.Count()
if count > 0 {
return true
@@ -255,59 +259,17 @@ func (self *Collection) Exists() bool {
return false
}
-// Transforms data from db.Item format into mgo format.
-func toInternal(val interface{}) interface{} {
-
- // TODO: use reflection to target kinds and not just types.
- switch t := val.(type) {
- case db.Cond:
- for k, _ := range t {
- t[k] = toInternal(t[k])
- }
- case map[string]interface{}:
- for k, _ := range t {
- t[k] = toInternal(t[k])
- }
- }
-
- return val
-}
-
-// Transforms data from mgo format into db.Item format.
-func toNative(val interface{}) interface{} {
-
- // TODO: use reflection to target kinds and not just types.
-
- switch t := val.(type) {
- case bson.M:
- v := map[string]interface{}{}
- for i, _ := range t {
- v[i] = toNative(t[i])
- }
- return v
- }
-
- return val
-
-}
-
-var (
- // idCache should be a struct if we're going to cache more than just _id field here
- idCache = make(map[reflect.Type]string, 0)
- idCacheMutex sync.RWMutex
-)
-
// Fetches object _id or generates a new one if object doesn't have one or the one it has is invalid
-func getId(item interface{}) bson.ObjectId {
+func getID(item interface{}) bson.ObjectId {
v := reflect.ValueOf(item)
switch v.Kind() {
case reflect.Map:
if inItem, ok := item.(map[string]interface{}); ok {
if id, ok := inItem["_id"]; ok {
- bsonId, ok := id.(bson.ObjectId)
+ bsonID, ok := id.(bson.ObjectId)
if ok {
- return bsonId
+ return bsonID
}
}
}
@@ -346,9 +308,9 @@ func getId(item interface{}) bson.ObjectId {
}
}
if fieldName != "" {
- if bsonId, ok := v.FieldByName(fieldName).Interface().(bson.ObjectId); ok {
- if bsonId.Valid() {
- return bsonId
+ if bsonID, ok := v.FieldByName(fieldName).Interface().(bson.ObjectId); ok {
+ if bsonID.Valid() {
+ return bsonID
}
}
}
diff --git a/mongo/database.go b/mongo/database.go
index 8d2da72453502300a55704c58f0def69f2590874..e7b3cabef1f6a1f6a37f5cb2de2cb2fb0804a7ce 100644
--- a/mongo/database.go
+++ b/mongo/database.go
@@ -23,8 +23,6 @@ package mongo // import "upper.io/db/mongo"
import (
"fmt"
- "log"
- "os"
"strings"
"time"
@@ -32,10 +30,12 @@ import (
"upper.io/db"
)
+// Adapter holds the name of the mongodb adapter.
const Adapter = `mongo`
var connTimeout = time.Second * 5
+// Source represents a MongoDB database.
type Source struct {
name string
connURL db.ConnectionURL
@@ -44,32 +44,22 @@ type Source struct {
version []int
}
-func debugEnabled() bool {
- if os.Getenv(db.EnvEnableDebug) != "" {
- return true
- }
- return false
-}
-
func init() {
db.Register(Adapter, &Source{})
}
-func debugLogQuery(c *chunks) {
- log.Printf("Fields: %v\nLimit: %v\nOffset: %v\nSort: %v\nConditions: %v\n", c.Fields, c.Limit, c.Offset, c.Sort, c.Conditions)
-}
-
-// Returns the string name of the database.
+// Name returns the name of the database.
func (s *Source) Name() string {
return s.name
}
-// Stores database settings.
+// Setup stores database settings and opens a connection to a database.
func (s *Source) Setup(connURL db.ConnectionURL) error {
s.connURL = connURL
return s.Open()
}
+// Clone returns a cloned db.Database session.
func (s *Source) Clone() (db.Database, error) {
clone := &Source{
name: s.name,
@@ -81,42 +71,47 @@ func (s *Source) Clone() (db.Database, error) {
return clone, nil
}
+// Transaction should support transactions, but it doesn't as MongoDB
+// currently does not support them.
func (s *Source) Transaction() (db.Tx, error) {
return nil, db.ErrUnsupported
}
+// Ping checks whether a connection to the database is still alive by pinging
+// it, establishing a connection if necessary.
func (s *Source) Ping() error {
return s.session.Ping()
}
-// Returns the underlying *mgo.Session instance.
+// Driver returns the underlying *sqlx.DB instance.
func (s *Source) Driver() interface{} {
return s.session
}
-// Attempts to connect to a database using the stored settings.
+// Open attempts to connect to the database server using already stored
+// settings.
func (s *Source) Open() error {
var err error
// Before db.ConnectionURL we used a unified db.Settings struct. This
// condition checks for that type and provides backwards compatibility.
if settings, ok := s.connURL.(db.Settings); ok {
- var sAddr string
+ var addr string
if settings.Host != "" {
if settings.Port > 0 {
- sAddr = fmt.Sprintf("%s:%d", settings.Host, settings.Port)
+ addr = fmt.Sprintf("%s:%d", settings.Host, settings.Port)
} else {
- sAddr = settings.Host
+ addr = settings.Host
}
} else {
- sAddr = settings.Socket
+ addr = settings.Socket
}
conn := ConnectionURL{
User: settings.User,
Password: settings.Password,
- Address: db.ParseAddress(sAddr),
+ Address: db.ParseAddress(addr),
Database: settings.Database,
}
@@ -133,7 +128,7 @@ func (s *Source) Open() error {
return nil
}
-// Closes the current database session.
+// Close terminates the current database session.
func (s *Source) Close() error {
if s.session != nil {
s.session.Close()
@@ -141,7 +136,7 @@ func (s *Source) Close() error {
return nil
}
-// Changes the active database.
+// Use changes the active database.
func (s *Source) Use(database string) (err error) {
var conn ConnectionURL
@@ -156,14 +151,13 @@ func (s *Source) Use(database string) (err error) {
return s.Open()
}
-// Drops the currently active database.
+// Drop drops the current database.
func (s *Source) Drop() error {
err := s.database.DropDatabase()
return err
}
-// Returns a slice of non-system collection names within the active
-// database.
+// Collections returns a list of non-system tables from the database.
func (s *Source) Collections() (cols []string, err error) {
var rawcols []string
var col string
@@ -175,7 +169,7 @@ func (s *Source) Collections() (cols []string, err error) {
cols = make([]string, 0, len(rawcols))
for _, col = range rawcols {
- if strings.HasPrefix(col, "system.") == false {
+ if !strings.HasPrefix(col, "system.") {
cols = append(cols, col)
}
}
@@ -183,7 +177,7 @@ func (s *Source) Collections() (cols []string, err error) {
return cols, nil
}
-// Returns a collection instance by name.
+// Collection returns a collection by name.
func (s *Source) Collection(names ...string) (db.Collection, error) {
var err error
@@ -197,14 +191,14 @@ func (s *Source) Collection(names ...string) (db.Collection, error) {
col.parent = s
col.collection = s.database.C(name)
- if col.Exists() == false {
+ if !col.Exists() {
err = db.ErrCollectionDoesNotExist
}
return col, err
}
-func (s *Source) VersionAtLeast(version ...int) bool {
+func (s *Source) versionAtLeast(version ...int) bool {
// only fetch this once - it makes a db call
if len(s.version) == 0 {
buildInfo, err := s.database.Session.BuildInfo()
@@ -221,10 +215,6 @@ func (s *Source) VersionAtLeast(version ...int) bool {
if s.version[i] < version[i] {
return false
}
-
- if s.version[i] > version[i] {
- return true
- }
}
return true
}
diff --git a/mongo/result.go b/mongo/result.go
index 8d85e92464b33995763ce79a2f6cb130fc795498..70823c8cce702663035e3ce9d466770d5529db0a 100644
--- a/mongo/result.go
+++ b/mongo/result.go
@@ -1,38 +1,42 @@
-/*
- Copyright (c) 2014 The upper.io/db authors. All rights reserved.
-
- Permission is hereby granted, free of charge, to any person obtaining
- a copy of this software and associated documentation files (the
- "Software"), to deal in the Software without restriction, including
- without limitation the rights to use, copy, modify, merge, publish,
- distribute, sublicense, and/or sell copies of the Software, and to
- permit persons to whom the Software is furnished to do so, subject to
- the following conditions:
-
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
+// Copyright (c) 2012-2015 The upper.io/db authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package mongo
import (
"errors"
"fmt"
+ "strings"
+ "time"
+
+ "encoding/json"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
"upper.io/db"
+ "upper.io/db/util/sqlutil"
)
-type Result struct {
+// result represents a query result.
+type result struct {
c *Collection
queryChunks *chunks
iter *mgo.Iter
@@ -42,113 +46,128 @@ var (
errUnknownSortValue = errors.New(`Unknown sort value "%s".`)
)
-// Creates a *mgo.Iter we can use in Next(), All() or One().
-func (self *Result) setCursor() error {
- if self.iter == nil {
- q, err := self.query()
+// setCursor creates a *mgo.Iter we can use in Next(), All() or One().
+func (r *result) setCursor() error {
+ if r.iter == nil {
+ q, err := r.query()
if err != nil {
return err
}
- self.iter = q.Iter()
+ r.iter = q.Iter()
}
return nil
}
-func (self *Result) Where(terms ...interface{}) db.Result {
- self.queryChunks.Conditions = self.c.compileQuery(terms...)
- return self
+func (r *result) Where(terms ...interface{}) db.Result {
+ r.queryChunks.Conditions = r.c.compileQuery(terms...)
+ return r
}
-// Determines the maximum limit of results to be returned.
-func (self *Result) Limit(n uint) db.Result {
- self.queryChunks.Limit = int(n)
- return self
+// Limit determines the maximum limit of results to be returned.
+func (r *result) Limit(n uint) db.Result {
+ r.queryChunks.Limit = int(n)
+ return r
}
-// Determines how many documents will be skipped before starting to grab
+// Skip determines how many documents will be skipped before starting to grab
// results.
-func (self *Result) Skip(n uint) db.Result {
- self.queryChunks.Offset = int(n)
- return self
+func (r *result) Skip(n uint) db.Result {
+ r.queryChunks.Offset = int(n)
+ return r
}
-// Determines sorting of results according to the provided names. Fields may be
-// prefixed by - (minus) which means descending order, ascending order would be
-// used otherwise.
-func (self *Result) Sort(fields ...interface{}) db.Result {
+// Sort determines sorting of results according to the provided names. Fields
+// may be prefixed by - (minus) which means descending order, ascending order
+// would be used otherwise.
+func (r *result) Sort(fields ...interface{}) db.Result {
ss := make([]string, len(fields))
for i, field := range fields {
ss[i] = fmt.Sprintf(`%v`, field)
}
- self.queryChunks.Sort = ss
- return self
+ r.queryChunks.Sort = ss
+ return r
}
-// Retrieves only the given fields.
-func (self *Result) Select(fields ...interface{}) db.Result {
+// Select marks the specific fields the user wants to retrieve.
+func (r *result) Select(fields ...interface{}) db.Result {
fieldslen := len(fields)
- self.queryChunks.Fields = make([]string, 0, fieldslen)
+ r.queryChunks.Fields = make([]string, 0, fieldslen)
for i := 0; i < fieldslen; i++ {
- self.queryChunks.Fields = append(self.queryChunks.Fields, fmt.Sprintf(`%v`, fields[i]))
+ r.queryChunks.Fields = append(r.queryChunks.Fields, fmt.Sprintf(`%v`, fields[i]))
}
- return self
+ return r
}
-// Dumps all results into a pointer to an slice of structs or maps.
-func (self *Result) All(dst interface{}) error {
+// All dumps all results into a pointer to an slice of structs or maps.
+func (r *result) All(dst interface{}) (err error) {
- var err error
+ if db.Debug {
+ var start, end int64
+ start = time.Now().UnixNano()
+ defer func() {
+ end = time.Now().UnixNano()
+ sqlutil.Log(r.debugQuery(fmt.Sprintf("find(%s)", mustJSON(r.queryChunks.Conditions))), nil, err, start, end)
+ }()
+ }
- err = self.setCursor()
+ err = r.setCursor()
if err != nil {
return err
}
- err = self.iter.All(dst)
+ err = r.iter.All(dst)
if err != nil {
return err
}
- self.Close()
+ r.Close()
return nil
}
-// Used to group results that have the same value in the same column or
-// columns.
-func (self *Result) Group(fields ...interface{}) db.Result {
- self.queryChunks.GroupBy = fields
- return self
+// Group is used to group results that have the same value in the same column
+// or columns.
+func (r *result) Group(fields ...interface{}) db.Result {
+ r.queryChunks.GroupBy = fields
+ return r
}
-// Fetches only one result from the resultset.
-func (self *Result) One(dst interface{}) error {
- var err error
- err = self.Next(dst)
+// One fetches only one result from the resultset.
+func (r *result) One(dst interface{}) (err error) {
+ if db.Debug {
+ var start, end int64
+ start = time.Now().UnixNano()
+ defer func() {
+ end = time.Now().UnixNano()
+ sqlutil.Log(r.debugQuery(fmt.Sprintf("findOne(%s)", mustJSON(r.queryChunks.Conditions))), nil, err, start, end)
+ }()
+ }
+
+ err = r.Next(dst)
if err != nil {
return err
}
- self.Close()
+ r.Close()
return nil
}
-// Fetches the next result from the resultset.
-func (self *Result) Next(dst interface{}) error {
- err := self.setCursor()
+// Next fetches the next result from the resultset.
+func (r *result) Next(dst interface{}) error {
+ err := r.setCursor()
if err != nil {
return err
}
- success := self.iter.Next(dst)
+ success := r.iter.Next(dst)
if success == false {
- err := self.iter.Err()
+ err := r.iter.Err()
if err == nil {
return db.ErrNoMoreRows
}
@@ -158,75 +177,152 @@ func (self *Result) Next(dst interface{}) error {
return nil
}
-// Removes the matching items from the collection.
-func (self *Result) Remove() error {
- var err error
- _, err = self.c.collection.RemoveAll(self.queryChunks.Conditions)
+// Remove deletes the matching items from the collection.
+func (r *result) Remove() (err error) {
+ if db.Debug {
+ var start, end int64
+ start = time.Now().UnixNano()
+ defer func() {
+ end = time.Now().UnixNano()
+ sqlutil.Log(r.debugQuery(fmt.Sprintf("remove(%s)", mustJSON(r.queryChunks.Conditions))), nil, err, start, end)
+ }()
+ }
+
+ _, err = r.c.collection.RemoveAll(r.queryChunks.Conditions)
if err != nil {
return err
}
return nil
}
-// Closes the result set.
-func (self *Result) Close() error {
+// Close closes the result set.
+func (r *result) Close() error {
var err error
- if self.iter != nil {
- err = self.iter.Close()
- self.iter = nil
+ if r.iter != nil {
+ err = r.iter.Close()
+ r.iter = nil
}
return err
}
-// Updates matching items from the collection with values of the given map or
-// struct.
-func (self *Result) Update(src interface{}) error {
- var err error
- _, err = self.c.collection.UpdateAll(self.queryChunks.Conditions, map[string]interface{}{"$set": src})
+// Update modified matching items from the collection with values of the given
+// map or struct.
+func (r *result) Update(src interface{}) (err error) {
+ updateSet := map[string]interface{}{"$set": src}
+
+ if db.Debug {
+ var start, end int64
+ start = time.Now().UnixNano()
+ defer func() {
+ end = time.Now().UnixNano()
+ sqlutil.Log(r.debugQuery(fmt.Sprintf("update(%s, %s)", mustJSON(r.queryChunks.Conditions), mustJSON(updateSet))), nil, err, start, end)
+ }()
+ }
+
+ _, err = r.c.collection.UpdateAll(r.queryChunks.Conditions, updateSet)
if err != nil {
return err
}
return nil
}
-func (self *Result) query() (*mgo.Query, error) {
+// query executes a mgo query.
+func (r *result) query() (*mgo.Query, error) {
var err error
- q := self.c.collection.Find(self.queryChunks.Conditions)
+ q := r.c.collection.Find(r.queryChunks.Conditions)
- if self.queryChunks.GroupBy != nil {
+ if len(r.queryChunks.GroupBy) > 0 {
return nil, db.ErrUnsupported
}
- if self.queryChunks.Offset > 0 {
- q = q.Skip(self.queryChunks.Offset)
+ if r.queryChunks.Offset > 0 {
+ q = q.Skip(r.queryChunks.Offset)
}
- if self.queryChunks.Limit > 0 {
- q = q.Limit(self.queryChunks.Limit)
+ if r.queryChunks.Limit > 0 {
+ q = q.Limit(r.queryChunks.Limit)
}
- if self.queryChunks.Fields != nil {
- sel := bson.M{}
- for _, field := range self.queryChunks.Fields {
+ if len(r.queryChunks.Fields) > 0 {
+ selectedFields := bson.M{}
+ for _, field := range r.queryChunks.Fields {
if field == `*` {
break
}
- sel[field] = true
+ selectedFields[field] = true
+ }
+ if len(selectedFields) > 0 {
+ q = q.Select(selectedFields)
}
- q = q.Select(sel)
}
- if len(self.queryChunks.Sort) > 0 {
- q.Sort(self.queryChunks.Sort...)
+ if len(r.queryChunks.Sort) > 0 {
+ q.Sort(r.queryChunks.Sort...)
}
return q, err
}
-// Counts matching elements.
-func (self *Result) Count() (uint64, error) {
- q := self.c.collection.Find(self.queryChunks.Conditions)
- total, err := q.Count()
- return uint64(total), err
+// Count counts matching elements.
+func (r *result) Count() (total uint64, err error) {
+ if db.Debug {
+ var start, end int64
+ start = time.Now().UnixNano()
+ defer func() {
+ end = time.Now().UnixNano()
+ sqlutil.Log(r.debugQuery(fmt.Sprintf("find(%s).count()", mustJSON(r.queryChunks.Conditions))), nil, err, start, end)
+ }()
+ }
+
+ q := r.c.collection.Find(r.queryChunks.Conditions)
+ var c int
+ c, err = q.Count()
+ return uint64(c), err
+}
+
+func (r *result) debugQuery(action string) string {
+ query := fmt.Sprintf("db.%s.%s", r.c.collection.Name, action)
+
+ if r.queryChunks.Limit > 0 {
+ query = fmt.Sprintf("%s.limit(%d)", query, r.queryChunks.Limit)
+ }
+ if r.queryChunks.Offset > 0 {
+ query = fmt.Sprintf("%s.offset(%d)", query, r.queryChunks.Offset)
+ }
+ if len(r.queryChunks.Fields) > 0 {
+ selectedFields := bson.M{}
+ for _, field := range r.queryChunks.Fields {
+ if field == `*` {
+ break
+ }
+ selectedFields[field] = true
+ }
+ if len(selectedFields) > 0 {
+ query = fmt.Sprintf("%s.select(%v)", query, selectedFields)
+ }
+ }
+ if len(r.queryChunks.GroupBy) > 0 {
+ escaped := make([]string, len(r.queryChunks.GroupBy))
+ for i := range r.queryChunks.GroupBy {
+ escaped[i] = string(mustJSON(r.queryChunks.GroupBy[i]))
+ }
+ query = fmt.Sprintf("%s.groupBy(%v)", query, strings.Join(escaped, ", "))
+ }
+ if len(r.queryChunks.Sort) > 0 {
+ escaped := make([]string, len(r.queryChunks.Sort))
+ for i := range r.queryChunks.Sort {
+ escaped[i] = string(mustJSON(r.queryChunks.Sort[i]))
+ }
+ query = fmt.Sprintf("%s.sort(%s)", query, strings.Join(escaped, ", "))
+ }
+ return query
+}
+
+func mustJSON(in interface{}) (out []byte) {
+ out, err := json.Marshal(in)
+ if err != nil {
+ panic(err)
+ }
+ return out
}