Simple and Powerful ORM for Go, support mysql,postgres,tidb,sqlite3,mssql,oracle https://xorm.io
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// Copyright 2019 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package schemas
import (
"reflect"
"sort"
"strings"
"time"
)
type DBType string
const (
POSTGRES DBType = "postgres"
SQLITE DBType = "sqlite3"
MYSQL DBType = "mysql"
MSSQL DBType = "mssql"
ORACLE DBType = "oracle"
)
// SQLType represents SQL types
type SQLType struct {
Name string
DefaultLength int
DefaultLength2 int
}
const (
UNKNOW_TYPE = iota
TEXT_TYPE
BLOB_TYPE
TIME_TYPE
NUMERIC_TYPE
ARRAY_TYPE
)
func (s *SQLType) IsType(st int) bool {
if t, ok := SqlTypes[s.Name]; ok && t == st {
return true
}
return false
}
func (s *SQLType) IsText() bool {
return s.IsType(TEXT_TYPE)
}
func (s *SQLType) IsBlob() bool {
return s.IsType(BLOB_TYPE)
}
func (s *SQLType) IsTime() bool {
return s.IsType(TIME_TYPE)
}
func (s *SQLType) IsNumeric() bool {
return s.IsType(NUMERIC_TYPE)
}
func (s *SQLType) IsArray() bool {
return s.IsType(ARRAY_TYPE)
}
func (s *SQLType) IsJson() bool {
return s.Name == Json || s.Name == Jsonb
}
func (s *SQLType) IsXML() bool {
return s.Name == XML
}
var (
Bit = "BIT"
TinyInt = "TINYINT"
SmallInt = "SMALLINT"
MediumInt = "MEDIUMINT"
Int = "INT"
Integer = "INTEGER"
BigInt = "BIGINT"
Enum = "ENUM"
Set = "SET"
Char = "CHAR"
Varchar = "VARCHAR"
NChar = "NCHAR"
NVarchar = "NVARCHAR"
TinyText = "TINYTEXT"
Text = "TEXT"
NText = "NTEXT"
Clob = "CLOB"
MediumText = "MEDIUMTEXT"
LongText = "LONGTEXT"
Uuid = "UUID"
UniqueIdentifier = "UNIQUEIDENTIFIER"
SysName = "SYSNAME"
Date = "DATE"
DateTime = "DATETIME"
SmallDateTime = "SMALLDATETIME"
Time = "TIME"
TimeStamp = "TIMESTAMP"
TimeStampz = "TIMESTAMPZ"
Year = "YEAR"
Decimal = "DECIMAL"
Numeric = "NUMERIC"
Money = "MONEY"
SmallMoney = "SMALLMONEY"
Real = "REAL"
Float = "FLOAT"
Double = "DOUBLE"
Binary = "BINARY"
VarBinary = "VARBINARY"
TinyBlob = "TINYBLOB"
Blob = "BLOB"
MediumBlob = "MEDIUMBLOB"
LongBlob = "LONGBLOB"
Bytea = "BYTEA"
Bool = "BOOL"
Boolean = "BOOLEAN"
Serial = "SERIAL"
BigSerial = "BIGSERIAL"
Json = "JSON"
Jsonb = "JSONB"
XML = "XML"
Array = "ARRAY"
SqlTypes = map[string]int{
Bit: NUMERIC_TYPE,
TinyInt: NUMERIC_TYPE,
SmallInt: NUMERIC_TYPE,
MediumInt: NUMERIC_TYPE,
Int: NUMERIC_TYPE,
Integer: NUMERIC_TYPE,
BigInt: NUMERIC_TYPE,
Enum: TEXT_TYPE,
Set: TEXT_TYPE,
Json: TEXT_TYPE,
Jsonb: TEXT_TYPE,
XML: TEXT_TYPE,
Char: TEXT_TYPE,
NChar: TEXT_TYPE,
Varchar: TEXT_TYPE,
NVarchar: TEXT_TYPE,
TinyText: TEXT_TYPE,
Text: TEXT_TYPE,
NText: TEXT_TYPE,
MediumText: TEXT_TYPE,
LongText: TEXT_TYPE,
Uuid: TEXT_TYPE,
Clob: TEXT_TYPE,
SysName: TEXT_TYPE,
Date: TIME_TYPE,
DateTime: TIME_TYPE,
Time: TIME_TYPE,
TimeStamp: TIME_TYPE,
TimeStampz: TIME_TYPE,
SmallDateTime: TIME_TYPE,
Year: TIME_TYPE,
Decimal: NUMERIC_TYPE,
Numeric: NUMERIC_TYPE,
Real: NUMERIC_TYPE,
Float: NUMERIC_TYPE,
Double: NUMERIC_TYPE,
Money: NUMERIC_TYPE,
SmallMoney: NUMERIC_TYPE,
Binary: BLOB_TYPE,
VarBinary: BLOB_TYPE,
TinyBlob: BLOB_TYPE,
Blob: BLOB_TYPE,
MediumBlob: BLOB_TYPE,
LongBlob: BLOB_TYPE,
Bytea: BLOB_TYPE,
UniqueIdentifier: BLOB_TYPE,
Bool: NUMERIC_TYPE,
Serial: NUMERIC_TYPE,
BigSerial: NUMERIC_TYPE,
Array: ARRAY_TYPE,
}
intTypes = sort.StringSlice{"*int", "*int16", "*int32", "*int8"}
uintTypes = sort.StringSlice{"*uint", "*uint16", "*uint32", "*uint8"}
)
// !nashtsai! treat following var as interal const values, these are used for reflect.TypeOf comparison
var (
c_EMPTY_STRING string
c_BOOL_DEFAULT bool
c_BYTE_DEFAULT byte
c_COMPLEX64_DEFAULT complex64
c_COMPLEX128_DEFAULT complex128
c_FLOAT32_DEFAULT float32
c_FLOAT64_DEFAULT float64
c_INT64_DEFAULT int64
c_UINT64_DEFAULT uint64
c_INT32_DEFAULT int32
c_UINT32_DEFAULT uint32
c_INT16_DEFAULT int16
c_UINT16_DEFAULT uint16
c_INT8_DEFAULT int8
c_UINT8_DEFAULT uint8
c_INT_DEFAULT int
c_UINT_DEFAULT uint
c_TIME_DEFAULT time.Time
)
var (
IntType = reflect.TypeOf(c_INT_DEFAULT)
Int8Type = reflect.TypeOf(c_INT8_DEFAULT)
Int16Type = reflect.TypeOf(c_INT16_DEFAULT)
Int32Type = reflect.TypeOf(c_INT32_DEFAULT)
Int64Type = reflect.TypeOf(c_INT64_DEFAULT)
UintType = reflect.TypeOf(c_UINT_DEFAULT)
Uint8Type = reflect.TypeOf(c_UINT8_DEFAULT)
Uint16Type = reflect.TypeOf(c_UINT16_DEFAULT)
Uint32Type = reflect.TypeOf(c_UINT32_DEFAULT)
Uint64Type = reflect.TypeOf(c_UINT64_DEFAULT)
Float32Type = reflect.TypeOf(c_FLOAT32_DEFAULT)
Float64Type = reflect.TypeOf(c_FLOAT64_DEFAULT)
Complex64Type = reflect.TypeOf(c_COMPLEX64_DEFAULT)
Complex128Type = reflect.TypeOf(c_COMPLEX128_DEFAULT)
StringType = reflect.TypeOf(c_EMPTY_STRING)
BoolType = reflect.TypeOf(c_BOOL_DEFAULT)
ByteType = reflect.TypeOf(c_BYTE_DEFAULT)
BytesType = reflect.SliceOf(ByteType)
TimeType = reflect.TypeOf(c_TIME_DEFAULT)
)
var (
PtrIntType = reflect.PtrTo(IntType)
PtrInt8Type = reflect.PtrTo(Int8Type)
PtrInt16Type = reflect.PtrTo(Int16Type)
PtrInt32Type = reflect.PtrTo(Int32Type)
PtrInt64Type = reflect.PtrTo(Int64Type)
PtrUintType = reflect.PtrTo(UintType)
PtrUint8Type = reflect.PtrTo(Uint8Type)
PtrUint16Type = reflect.PtrTo(Uint16Type)
PtrUint32Type = reflect.PtrTo(Uint32Type)
PtrUint64Type = reflect.PtrTo(Uint64Type)
PtrFloat32Type = reflect.PtrTo(Float32Type)
PtrFloat64Type = reflect.PtrTo(Float64Type)
PtrComplex64Type = reflect.PtrTo(Complex64Type)
PtrComplex128Type = reflect.PtrTo(Complex128Type)
PtrStringType = reflect.PtrTo(StringType)
PtrBoolType = reflect.PtrTo(BoolType)
PtrByteType = reflect.PtrTo(ByteType)
PtrTimeType = reflect.PtrTo(TimeType)
)
// Type2SQLType generate SQLType acorrding Go's type
func Type2SQLType(t reflect.Type) (st SQLType) {
switch k := t.Kind(); k {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32:
st = SQLType{Int, 0, 0}
case reflect.Int64, reflect.Uint64:
st = SQLType{BigInt, 0, 0}
case reflect.Float32:
st = SQLType{Float, 0, 0}
case reflect.Float64:
st = SQLType{Double, 0, 0}
case reflect.Complex64, reflect.Complex128:
st = SQLType{Varchar, 64, 0}
case reflect.Array, reflect.Slice, reflect.Map:
if t.Elem() == reflect.TypeOf(c_BYTE_DEFAULT) {
st = SQLType{Blob, 0, 0}
} else {
st = SQLType{Text, 0, 0}
}
case reflect.Bool:
st = SQLType{Bool, 0, 0}
case reflect.String:
st = SQLType{Varchar, 255, 0}
case reflect.Struct:
if t.ConvertibleTo(TimeType) {
st = SQLType{DateTime, 0, 0}
} else {
// TODO need to handle association struct
st = SQLType{Text, 0, 0}
}
case reflect.Ptr:
st = Type2SQLType(t.Elem())
default:
st = SQLType{Text, 0, 0}
}
return
}
// default sql type change to go types
func SQLType2Type(st SQLType) reflect.Type {
name := strings.ToUpper(st.Name)
switch name {
case Bit, TinyInt, SmallInt, MediumInt, Int, Integer, Serial:
return reflect.TypeOf(1)
case BigInt, BigSerial:
return reflect.TypeOf(int64(1))
case Float, Real:
return reflect.TypeOf(float32(1))
case Double:
return reflect.TypeOf(float64(1))
case Char, NChar, Varchar, NVarchar, TinyText, Text, NText, MediumText, LongText, Enum, Set, Uuid, Clob, SysName:
return reflect.TypeOf("")
case TinyBlob, Blob, LongBlob, Bytea, Binary, MediumBlob, VarBinary, UniqueIdentifier:
return reflect.TypeOf([]byte{})
case Bool:
return reflect.TypeOf(true)
case DateTime, Date, Time, TimeStamp, TimeStampz, SmallDateTime, Year:
return reflect.TypeOf(c_TIME_DEFAULT)
case Decimal, Numeric, Money, SmallMoney:
return reflect.TypeOf("")
default:
return reflect.TypeOf("")
}
}