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ca8e215cfa
close #234 * Migrate store * Migrate tests * Rewrite migrations * Init fresh DB in on step * Rm old stuff (meddler, sql files, dead code, ...) |
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.. | ||
caches | ||
contexts | ||
convert | ||
core | ||
dialects | ||
internal | ||
log | ||
names | ||
schemas | ||
tags | ||
.changelog.yml | ||
.drone.yml | ||
.gitignore | ||
.revive.toml | ||
CHANGELOG.md | ||
CONTRIBUTING.md | ||
doc.go | ||
engine.go | ||
engine_group.go | ||
engine_group_policy.go | ||
error.go | ||
go.mod | ||
go.sum | ||
interface.go | ||
LICENSE | ||
Makefile | ||
processors.go | ||
README.md | ||
README_CN.md | ||
rows.go | ||
scan.go | ||
session.go | ||
session_cols.go | ||
session_cond.go | ||
session_delete.go | ||
session_exist.go | ||
session_find.go | ||
session_get.go | ||
session_insert.go | ||
session_iterate.go | ||
session_query.go | ||
session_raw.go | ||
session_schema.go | ||
session_stats.go | ||
session_tx.go | ||
session_update.go |
xorm
Xorm is a simple and powerful ORM for Go.
Notice
v1.0.0 has some break changes from v0.8.2.
- Removed some non gonic function name
Id
,Sql
, please useID
,SQL
instead. - Removed the dependent from
xorm.io/core
and moved the codes toxorm.io/xorm/core
,xorm.io/xorm/names
,xorm.io/xorm/schemas
and others. - Renamed some interface names. i.e.
core.IMapper
->names.Mapper
,core.ILogger
->log.Logger
.
Features
- Struct <-> Table Mapping Support
- Chainable APIs
- Transaction Support
- Both ORM and raw SQL operation Support
- Sync database schema Support
- Query Cache speed up
- Database Reverse support via xorm.io/reverse
- Simple cascade loading support
- Optimistic Locking support
- SQL Builder support via xorm.io/builder
- Automatical Read/Write seperatelly
- Postgres schema support
- Context Cache support
- Support log/SQLLog context
Drivers Support
Drivers for Go's sql package which currently support database/sql includes:
-
- github.com/mattn/go-sqlite3
- modernc.org/sqlite (windows unsupported)
-
MsSql
-
Oracle
- github.com/godror/godror (experiment)
- github.com/mattn/go-oci8 (experiment)
Installation
go get xorm.io/xorm
Documents
Quick Start
- Create Engine
Firstly, we should new an engine for a database.
engine, err := xorm.NewEngine(driverName, dataSourceName)
- Define a struct and Sync2 table struct to database
type User struct {
Id int64
Name string
Salt string
Age int
Passwd string `xorm:"varchar(200)"`
Created time.Time `xorm:"created"`
Updated time.Time `xorm:"updated"`
}
err := engine.Sync2(new(User))
- Create Engine Group
dataSourceNameSlice := []string{masterDataSourceName, slave1DataSourceName, slave2DataSourceName}
engineGroup, err := xorm.NewEngineGroup(driverName, dataSourceNameSlice)
masterEngine, err := xorm.NewEngine(driverName, masterDataSourceName)
slave1Engine, err := xorm.NewEngine(driverName, slave1DataSourceName)
slave2Engine, err := xorm.NewEngine(driverName, slave2DataSourceName)
engineGroup, err := xorm.NewEngineGroup(masterEngine, []*Engine{slave1Engine, slave2Engine})
Then all place where engine
you can just use engineGroup
.
Query
runs a SQL string, the returned results is[]map[string][]byte
,QueryString
returns[]map[string]string
,QueryInterface
returns[]map[string]interface{}
.
results, err := engine.Query("select * from user")
results, err := engine.Where("a = 1").Query()
results, err := engine.QueryString("select * from user")
results, err := engine.Where("a = 1").QueryString()
results, err := engine.QueryInterface("select * from user")
results, err := engine.Where("a = 1").QueryInterface()
Exec
runs a SQL string, it returnsaffected
anderror
affected, err := engine.Exec("update user set age = ? where name = ?", age, name)
Insert
one or multiple records to database
affected, err := engine.Insert(&user)
// INSERT INTO struct () values ()
affected, err := engine.Insert(&user1, &user2)
// INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values ()
affected, err := engine.Insert(&users)
// INSERT INTO struct () values (),(),()
affected, err := engine.Insert(&user1, &users)
// INSERT INTO struct1 () values ()
// INSERT INTO struct2 () values (),(),()
Get
query one record from database
has, err := engine.Get(&user)
// SELECT * FROM user LIMIT 1
has, err := engine.Where("name = ?", name).Desc("id").Get(&user)
// SELECT * FROM user WHERE name = ? ORDER BY id DESC LIMIT 1
var name string
has, err := engine.Table(&user).Where("id = ?", id).Cols("name").Get(&name)
// SELECT name FROM user WHERE id = ?
var id int64
has, err := engine.Table(&user).Where("name = ?", name).Cols("id").Get(&id)
has, err := engine.SQL("select id from user").Get(&id)
// SELECT id FROM user WHERE name = ?
var valuesMap = make(map[string]string)
has, err := engine.Table(&user).Where("id = ?", id).Get(&valuesMap)
// SELECT * FROM user WHERE id = ?
var valuesSlice = make([]interface{}, len(cols))
has, err := engine.Table(&user).Where("id = ?", id).Cols(cols...).Get(&valuesSlice)
// SELECT col1, col2, col3 FROM user WHERE id = ?
Exist
check if one record exist on table
has, err := testEngine.Exist(new(RecordExist))
// SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Exist(&RecordExist{
Name: "test1",
})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.Where("name = ?", "test1").Exist(&RecordExist{})
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
has, err = testEngine.SQL("select * from record_exist where name = ?", "test1").Exist()
// select * from record_exist where name = ?
has, err = testEngine.Table("record_exist").Exist()
// SELECT * FROM record_exist LIMIT 1
has, err = testEngine.Table("record_exist").Where("name = ?", "test1").Exist()
// SELECT * FROM record_exist WHERE name = ? LIMIT 1
Find
query multiple records from database, also you can use join and extends
var users []User
err := engine.Where("name = ?", name).And("age > 10").Limit(10, 0).Find(&users)
// SELECT * FROM user WHERE name = ? AND age > 10 limit 10 offset 0
type Detail struct {
Id int64
UserId int64 `xorm:"index"`
}
type UserDetail struct {
User `xorm:"extends"`
Detail `xorm:"extends"`
}
var users []UserDetail
err := engine.Table("user").Select("user.*, detail.*").
Join("INNER", "detail", "detail.user_id = user.id").
Where("user.name = ?", name).Limit(10, 0).
Find(&users)
// SELECT user.*, detail.* FROM user INNER JOIN detail WHERE user.name = ? limit 10 offset 0
Iterate
andRows
query multiple records and record by record handle, there are two methods Iterate and Rows
err := engine.Iterate(&User{Name:name}, func(idx int, bean interface{}) error {
user := bean.(*User)
return nil
})
// SELECT * FROM user
err := engine.BufferSize(100).Iterate(&User{Name:name}, func(idx int, bean interface{}) error {
user := bean.(*User)
return nil
})
// SELECT * FROM user Limit 0, 100
// SELECT * FROM user Limit 101, 100
rows, err := engine.Rows(&User{Name:name})
// SELECT * FROM user
defer rows.Close()
bean := new(Struct)
for rows.Next() {
err = rows.Scan(bean)
}
Update
update one or more records, default will update non-empty and non-zero fields except when you use Cols, AllCols and so on.
affected, err := engine.ID(1).Update(&user)
// UPDATE user SET ... WHERE id = ?
affected, err := engine.Update(&user, &User{Name:name})
// UPDATE user SET ... WHERE name = ?
var ids = []int64{1, 2, 3}
affected, err := engine.In("id", ids).Update(&user)
// UPDATE user SET ... WHERE id IN (?, ?, ?)
// force update indicated columns by Cols
affected, err := engine.ID(1).Cols("age").Update(&User{Name:name, Age: 12})
// UPDATE user SET age = ?, updated=? WHERE id = ?
// force NOT update indicated columns by Omit
affected, err := engine.ID(1).Omit("name").Update(&User{Name:name, Age: 12})
// UPDATE user SET age = ?, updated=? WHERE id = ?
affected, err := engine.ID(1).AllCols().Update(&user)
// UPDATE user SET name=?,age=?,salt=?,passwd=?,updated=? WHERE id = ?
Delete
delete one or more records, Delete MUST have condition
affected, err := engine.Where(...).Delete(&user)
// DELETE FROM user WHERE ...
affected, err := engine.ID(2).Delete(&user)
// DELETE FROM user WHERE id = ?
affected, err := engine.Table("user").Where(...).Delete()
// DELETE FROM user WHERE ...
Count
count records
counts, err := engine.Count(&user)
// SELECT count(*) AS total FROM user
FindAndCount
combines functionFind
withCount
which is usually used in query by page
var users []User
counts, err := engine.FindAndCount(&users)
Sum
sum functions
agesFloat64, err := engine.Sum(&user, "age")
// SELECT sum(age) AS total FROM user
agesInt64, err := engine.SumInt(&user, "age")
// SELECT sum(age) AS total FROM user
sumFloat64Slice, err := engine.Sums(&user, "age", "score")
// SELECT sum(age), sum(score) FROM user
sumInt64Slice, err := engine.SumsInt(&user, "age", "score")
// SELECT sum(age), sum(score) FROM user
- Query conditions builder
err := engine.Where(builder.NotIn("a", 1, 2).And(builder.In("b", "c", "d", "e"))).Find(&users)
// SELECT id, name ... FROM user WHERE a NOT IN (?, ?) AND b IN (?, ?, ?)
- Multiple operations in one go routine, no transaction here but resue session memory
session := engine.NewSession()
defer session.Close()
user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
if _, err := session.Insert(&user1); err != nil {
return err
}
user2 := Userinfo{Username: "yyy"}
if _, err := session.Where("id = ?", 2).Update(&user2); err != nil {
return err
}
if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil {
return err
}
return nil
- Transaction should be on one go routine. There is transaction and resue session memory
session := engine.NewSession()
defer session.Close()
// add Begin() before any action
if err := session.Begin(); err != nil {
// if returned then will rollback automatically
return err
}
user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
if _, err := session.Insert(&user1); err != nil {
return err
}
user2 := Userinfo{Username: "yyy"}
if _, err := session.Where("id = ?", 2).Update(&user2); err != nil {
return err
}
if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil {
return err
}
// add Commit() after all actions
return session.Commit()
- Or you can use
Transaction
to replace above codes.
res, err := engine.Transaction(func(session *xorm.Session) (interface{}, error) {
user1 := Userinfo{Username: "xiaoxiao", Departname: "dev", Alias: "lunny", Created: time.Now()}
if _, err := session.Insert(&user1); err != nil {
return nil, err
}
user2 := Userinfo{Username: "yyy"}
if _, err := session.Where("id = ?", 2).Update(&user2); err != nil {
return nil, err
}
if _, err := session.Exec("delete from userinfo where username = ?", user2.Username); err != nil {
return nil, err
}
return nil, nil
})
- Context Cache, if enabled, current query result will be cached on session and be used by next same statement on the same session.
sess := engine.NewSession()
defer sess.Close()
var context = xorm.NewMemoryContextCache()
var c2 ContextGetStruct
has, err := sess.ID(1).ContextCache(context).Get(&c2)
assert.NoError(t, err)
assert.True(t, has)
assert.EqualValues(t, 1, c2.Id)
assert.EqualValues(t, "1", c2.Name)
sql, args := sess.LastSQL()
assert.True(t, len(sql) > 0)
assert.True(t, len(args) > 0)
var c3 ContextGetStruct
has, err = sess.ID(1).ContextCache(context).Get(&c3)
assert.NoError(t, err)
assert.True(t, has)
assert.EqualValues(t, 1, c3.Id)
assert.EqualValues(t, "1", c3.Name)
sql, args = sess.LastSQL()
assert.True(t, len(sql) == 0)
assert.True(t, len(args) == 0)
Contributing
If you want to pull request, please see CONTRIBUTING. And you can also go to Xorm on discourse to discuss.
Credits
Contributors
This project exists thanks to all the people who contribute. [Contribute].
Backers
Thank you to all our backers! 🙏 [Become a backer]
Sponsors
Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [Become a sponsor]
Changelog
You can find all the changelog here
Cases
LICENSE
BSD License http://creativecommons.org/licenses/BSD/