forked from mirror/gorm
108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
package gorm
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
type sqlite3 struct {
|
|
commonDialect
|
|
}
|
|
|
|
func init() {
|
|
RegisterDialect("sqlite3", &sqlite3{})
|
|
}
|
|
|
|
func (sqlite3) GetName() string {
|
|
return "sqlite3"
|
|
}
|
|
|
|
// Get Data Type for Sqlite Dialect
|
|
func (s *sqlite3) DataTypeOf(field *StructField) string {
|
|
var dataValue, sqlType, size, additionalType = ParseFieldStructForDialect(field, s)
|
|
|
|
if sqlType == "" {
|
|
switch dataValue.Kind() {
|
|
case reflect.Bool:
|
|
sqlType = "bool"
|
|
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
|
|
if s.fieldCanAutoIncrement(field) {
|
|
field.TagSettingsSet("AUTO_INCREMENT", "AUTO_INCREMENT")
|
|
sqlType = "integer primary key autoincrement"
|
|
} else {
|
|
sqlType = "integer"
|
|
}
|
|
case reflect.Int64, reflect.Uint64:
|
|
if s.fieldCanAutoIncrement(field) {
|
|
field.TagSettingsSet("AUTO_INCREMENT", "AUTO_INCREMENT")
|
|
sqlType = "integer primary key autoincrement"
|
|
} else {
|
|
sqlType = "bigint"
|
|
}
|
|
case reflect.Float32, reflect.Float64:
|
|
sqlType = "real"
|
|
case reflect.String:
|
|
if size > 0 && size < 65532 {
|
|
sqlType = fmt.Sprintf("varchar(%d)", size)
|
|
} else {
|
|
sqlType = "text"
|
|
}
|
|
case reflect.Struct:
|
|
if _, ok := dataValue.Interface().(time.Time); ok {
|
|
sqlType = "datetime"
|
|
}
|
|
default:
|
|
if IsByteArrayOrSlice(dataValue) {
|
|
sqlType = "blob"
|
|
}
|
|
}
|
|
}
|
|
|
|
if sqlType == "" {
|
|
panic(fmt.Sprintf("invalid sql type %s (%s) for sqlite3", dataValue.Type().Name(), dataValue.Kind().String()))
|
|
}
|
|
|
|
if strings.TrimSpace(additionalType) == "" {
|
|
return sqlType
|
|
}
|
|
return fmt.Sprintf("%v %v", sqlType, additionalType)
|
|
}
|
|
|
|
func (s sqlite3) HasIndex(tableName string, indexName string) bool {
|
|
var count int
|
|
s.db.QueryRow(fmt.Sprintf("SELECT count(*) FROM sqlite_master WHERE tbl_name = ? AND sql LIKE '%%INDEX %v ON%%'", indexName), tableName).Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (s sqlite3) HasTable(tableName string) bool {
|
|
var count int
|
|
s.db.QueryRow("SELECT count(*) FROM sqlite_master WHERE type='table' AND name=?", tableName).Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (s sqlite3) HasColumn(tableName string, columnName string) bool {
|
|
var count int
|
|
s.db.QueryRow(fmt.Sprintf("SELECT count(*) FROM sqlite_master WHERE tbl_name = ? AND (sql LIKE '%%\"%v\" %%' OR sql LIKE '%%%v %%');\n", columnName, columnName), tableName).Scan(&count)
|
|
return count > 0
|
|
}
|
|
|
|
func (s sqlite3) CurrentDatabase() (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 := s.db.QueryRow("PRAGMA database_list").Scan(ifaces...); err != nil {
|
|
return
|
|
}
|
|
if pointers[1] != nil {
|
|
name = *pointers[1]
|
|
}
|
|
return
|
|
}
|