/
model.go
147 lines (125 loc) · 3.54 KB
/
model.go
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package mgorm
import (
"strings"
"github.com/globalsign/mgo"
"github.com/globalsign/mgo/bson"
"github.com/pkg/errors"
)
// Model for collection
type Model struct {
MongoAlias string
DBName string
CollectionName string
}
// NewModel make new model
func NewModel(alias, db, collection string) Model {
return Model{
MongoAlias: alias,
DBName: db,
CollectionName: collection,
}
}
func (m *Model) wrapErr(err error, action string) error {
return errors.Wrapf(err, "%s %s", m.CollectionName, action)
}
// CloseFunc use for close session
type CloseFunc func()
// C get original colletion for Model
func (m *Model) C() (*mgo.Collection, CloseFunc) {
session := GetSession(m.MongoAlias)
col := session.DB(m.DBName).C(m.CollectionName)
return col, session.Close
}
// CreateIndex for Collection
func (m *Model) CreateIndex(index mgo.Index) error {
c, done := m.C()
defer done()
return m.wrapErr(c.EnsureIndex(index), "create index")
}
// Insert documents
func (m *Model) Insert(docs ...interface{}) error {
c, done := m.C()
defer done()
return m.wrapErr(c.Insert(docs...), "insert")
}
// Update document matching selector
func (m *Model) Update(selector, update interface{}, opts ...UpdateOpt) error {
c, done := m.C()
defer done()
uo := &updateOpts{}
for _, opt := range opts {
opt(uo)
}
if uo.Upsert {
_, err := c.Upsert(selector, update)
return m.wrapErr(err, "update")
}
return m.wrapErr(c.Update(selector, update), "update")
}
// UpdateID updata document matching ID
func (m *Model) UpdateID(id, update interface{}, opts ...UpdateOpt) error {
selector := bson.M{"_id": id}
return m.Update(selector, update, opts...)
}
// UpdateAll finds all documents matching the provided selector document and update them
func (m *Model) UpdateAll(selector, update interface{}) error {
c, done := m.C()
defer done()
_, err := c.UpdateAll(selector, update)
return m.wrapErr(err, "update all")
}
// Delete document matching selector
func (m *Model) Delete(selector bson.M) error {
c, done := m.C()
defer done()
return m.wrapErr(c.Remove(selector), "delete")
}
// DeleteAll find all document matching selector and delete them
func (m *Model) DeleteAll(selector bson.M) error {
c, done := m.C()
defer done()
_, err := c.RemoveAll(selector)
return m.wrapErr(err, "delete all")
}
// FindOne document by selector
func (m *Model) FindOne(result, selector interface{}) error {
c, done := m.C()
defer done()
return m.wrapErr(c.Find(selector).One(result), "find one")
}
// FindAll documents matching selector
func (m *Model) FindAll(result, selector interface{}, opts ...FindOpt) error {
c, done := m.C()
defer done()
query := c.Find(selector)
query = applyFindOpts(query, opts...)
return m.wrapErr(query.All(result), "find all")
}
// FindID find document by id
func (m *Model) FindID(result, id interface{}) error {
return m.FindOne(result, bson.M{"_id": id})
}
// Count documents matching selector
func (m *Model) Count(selector interface{}) (int, error) {
c, done := m.C()
defer done()
count, err := c.Find(selector).Count()
return count, m.wrapErr(err, "count")
}
// GetIter make an iter for selector
func (m *Model) GetIter(selector interface{}) *Iter {
c, done := m.C()
ogIter := c.Find(selector).Iter()
return &Iter{
closeSession: done,
Iter: ogIter,
}
}
// IsErrNotFound check if not-found error
func IsErrNotFound(err error) bool {
return strings.Contains(err.Error(), "not found")
}
// IsErrDuplicate check if duplicate-key error
func IsErrDuplicate(err error) bool {
return strings.Contains(err.Error(), "duplicate")
}