mirror of https://github.com/go-gorm/gorm.git
82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
package gorm
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"time"
|
|
)
|
|
|
|
type sqlite3 struct {
|
|
commonDialect
|
|
}
|
|
|
|
func (sqlite3) SqlTag(value reflect.Value, size int, autoIncrease bool) string {
|
|
switch value.Kind() {
|
|
case reflect.Bool:
|
|
return "bool"
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
|
|
return "integer"
|
|
case reflect.Int64, reflect.Uint64:
|
|
if autoIncrease {
|
|
return "integer"
|
|
}
|
|
return "bigint"
|
|
case reflect.Float32, reflect.Float64:
|
|
return "real"
|
|
case reflect.String:
|
|
if size > 0 && size < 65532 {
|
|
return fmt.Sprintf("varchar(%d)", size)
|
|
}
|
|
return "text"
|
|
case reflect.Struct:
|
|
if _, ok := value.Interface().(time.Time); ok {
|
|
return "datetime"
|
|
}
|
|
default:
|
|
if _, ok := value.Interface().([]byte); ok {
|
|
return "blob"
|
|
}
|
|
}
|
|
panic(fmt.Sprintf("invalid sql type %s (%s) for sqlite3", value.Type().Name(), value.Kind().String()))
|
|
}
|
|
|
|
func (sqlite3) HasTable(scope *Scope, tableName string) bool {
|
|
var count int
|
|
scope.NewDB().Raw("SELECT count(*) FROM sqlite_master WHERE type='table' AND name=?", tableName).Row().Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (sqlite3) HasColumn(scope *Scope, tableName string, columnName string) bool {
|
|
var count int
|
|
scope.NewDB().Raw(fmt.Sprintf("SELECT count(*) FROM sqlite_master WHERE tbl_name = ? AND (sql LIKE '%%(\"%v\" %%' OR sql LIKE '%%,\"%v\" %%' OR sql LIKE '%%( %v %%' OR sql LIKE '%%, %v %%');\n", columnName, columnName, columnName, columnName), tableName).Row().Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (sqlite3) HasIndex(scope *Scope, tableName string, indexName string) bool {
|
|
var count int
|
|
scope.NewDB().Raw(fmt.Sprintf("SELECT count(*) FROM sqlite_master WHERE tbl_name = ? AND sql LIKE '%%INDEX %v ON%%'", indexName), tableName).Row().Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (sqlite3) RemoveIndex(scope *Scope, indexName string) {
|
|
scope.NewDB().Exec(fmt.Sprintf("DROP INDEX %v", indexName))
|
|
}
|
|
|
|
func (sqlite3) CurrentDatabase(scope *Scope) (name string) {
|
|
var (
|
|
ifaces = make([]interface{}, 3)
|
|
pointers = make([]*string, 3)
|
|
i int
|
|
)
|
|
for i = 0; i < 3; i++ {
|
|
ifaces[i] = &pointers[i]
|
|
}
|
|
if err := scope.NewDB().Raw("PRAGMA database_list").Row().Scan(ifaces...); scope.Err(err) != nil {
|
|
return
|
|
}
|
|
if pointers[1] != nil {
|
|
name = *pointers[1]
|
|
}
|
|
return
|
|
}
|