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package migrator
import "fmt"
type Sqlite3 struct {
BaseDialect
}
func NewSqlite3Dialect() *Sqlite3 {
d := Sqlite3{}
d.BaseDialect.dialect = &d
d.BaseDialect.driverName = SQLITE
return &d
}
func (db *Sqlite3) SupportEngine() bool {
return false
}
func (db *Sqlite3) Quote(name string) string {
return "`" + name + "`"
}
func (db *Sqlite3) QuoteStr() string {
return "`"
}
func (db *Sqlite3) AutoIncrStr() string {
return "AUTOINCREMENT"
}
func (db *Sqlite3) BooleanStr(value bool) string {
if value {
return "1"
}
return "0"
}
func (db *Sqlite3) DateTimeFunc(value string) string {
return "datetime(" + value + ")"
}
func (db *Sqlite3) SqlType(c *Column) string {
switch c.Type {
case DB_Date, DB_DateTime, DB_TimeStamp, DB_Time:
return DB_DateTime
case DB_TimeStampz:
return DB_Text
case DB_Char, DB_Varchar, DB_NVarchar, DB_TinyText, DB_Text, DB_MediumText, DB_LongText:
return DB_Text
case DB_Bit, DB_TinyInt, DB_SmallInt, DB_MediumInt, DB_Int, DB_Integer, DB_BigInt, DB_Bool:
return DB_Integer
case DB_Float, DB_Double, DB_Real:
return DB_Real
case DB_Decimal, DB_Numeric:
return DB_Numeric
case DB_TinyBlob, DB_Blob, DB_MediumBlob, DB_LongBlob, DB_Bytea, DB_Binary, DB_VarBinary:
return DB_Blob
case DB_Serial, DB_BigSerial:
c.IsPrimaryKey = true
c.IsAutoIncrement = true
c.Nullable = false
return DB_Integer
default:
return c.Type
}
}
func (db *Sqlite3) TableCheckSql(tableName string) (string, []interface{}) {
args := []interface{}{tableName}
return "SELECT name FROM sqlite_master WHERE type='table' and name = ?", args
}
func (db *Sqlite3) DropIndexSql(tableName string, index *Index) string {
quote := db.Quote
//var unique string
idxName := index.XName(tableName)
return fmt.Sprintf("DROP INDEX %v", quote(idxName))
}
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