135 lines
3.2 KiB
Go
135 lines
3.2 KiB
Go
package orm
|
|
|
|
import (
|
|
"database/sql"
|
|
"fmt"
|
|
)
|
|
|
|
// sqlite operators.
|
|
var sqliteOperators = map[string]string{
|
|
"exact": "= ?",
|
|
"iexact": "LIKE ? ESCAPE '\\'",
|
|
"contains": "LIKE ? ESCAPE '\\'",
|
|
"icontains": "LIKE ? ESCAPE '\\'",
|
|
"gt": "> ?",
|
|
"gte": ">= ?",
|
|
"lt": "< ?",
|
|
"lte": "<= ?",
|
|
"startswith": "LIKE ? ESCAPE '\\'",
|
|
"endswith": "LIKE ? ESCAPE '\\'",
|
|
"istartswith": "LIKE ? ESCAPE '\\'",
|
|
"iendswith": "LIKE ? ESCAPE '\\'",
|
|
}
|
|
|
|
// sqlite column types.
|
|
var sqliteTypes = map[string]string{
|
|
"auto": "integer NOT NULL PRIMARY KEY AUTOINCREMENT",
|
|
"pk": "NOT NULL PRIMARY KEY",
|
|
"bool": "bool",
|
|
"string": "varchar(%d)",
|
|
"string-text": "text",
|
|
"time.Time-date": "date",
|
|
"time.Time": "datetime",
|
|
"int8": "tinyint",
|
|
"int16": "smallint",
|
|
"int32": "integer",
|
|
"int64": "bigint",
|
|
"uint8": "tinyint unsigned",
|
|
"uint16": "smallint unsigned",
|
|
"uint32": "integer unsigned",
|
|
"uint64": "bigint unsigned",
|
|
"float64": "real",
|
|
"float64-decimal": "decimal",
|
|
}
|
|
|
|
// sqlite dbBaser.
|
|
type dbBaseSqlite struct {
|
|
dbBase
|
|
}
|
|
|
|
var _ dbBaser = new(dbBaseSqlite)
|
|
|
|
// get sqlite operator.
|
|
func (d *dbBaseSqlite) OperatorSql(operator string) string {
|
|
return sqliteOperators[operator]
|
|
}
|
|
|
|
// generate functioned sql for sqlite.
|
|
// only support DATE(text).
|
|
func (d *dbBaseSqlite) GenerateOperatorLeftCol(fi *fieldInfo, operator string, leftCol *string) {
|
|
if fi.fieldType == TypeDateField {
|
|
*leftCol = fmt.Sprintf("DATE(%s)", *leftCol)
|
|
}
|
|
}
|
|
|
|
// unable updating joined record in sqlite.
|
|
func (d *dbBaseSqlite) SupportUpdateJoin() bool {
|
|
return false
|
|
}
|
|
|
|
// max int in sqlite.
|
|
func (d *dbBaseSqlite) MaxLimit() uint64 {
|
|
return 9223372036854775807
|
|
}
|
|
|
|
// get column types in sqlite.
|
|
func (d *dbBaseSqlite) DbTypes() map[string]string {
|
|
return sqliteTypes
|
|
}
|
|
|
|
// get show tables sql in sqlite.
|
|
func (d *dbBaseSqlite) ShowTablesQuery() string {
|
|
return "SELECT name FROM sqlite_master WHERE type = 'table'"
|
|
}
|
|
|
|
// get columns in sqlite.
|
|
func (d *dbBaseSqlite) GetColumns(db dbQuerier, table string) (map[string][3]string, error) {
|
|
query := d.ins.ShowColumnsQuery(table)
|
|
rows, err := db.Query(query)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
columns := make(map[string][3]string)
|
|
for rows.Next() {
|
|
var tmp, name, typ, null sql.NullString
|
|
err := rows.Scan(&tmp, &name, &typ, &null, &tmp, &tmp)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
columns[name.String] = [3]string{name.String, typ.String, null.String}
|
|
}
|
|
|
|
return columns, nil
|
|
}
|
|
|
|
// get show columns sql in sqlite.
|
|
func (d *dbBaseSqlite) ShowColumnsQuery(table string) string {
|
|
return fmt.Sprintf("pragma table_info('%s')", table)
|
|
}
|
|
|
|
// check index exist in sqlite.
|
|
func (d *dbBaseSqlite) IndexExists(db dbQuerier, table string, name string) bool {
|
|
query := fmt.Sprintf("PRAGMA index_list('%s')", table)
|
|
rows, err := db.Query(query)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer rows.Close()
|
|
for rows.Next() {
|
|
var tmp, index sql.NullString
|
|
rows.Scan(&tmp, &index, &tmp)
|
|
if name == index.String {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// create new sqlite dbBaser.
|
|
func newdbBaseSqlite() dbBaser {
|
|
b := new(dbBaseSqlite)
|
|
b.ins = b
|
|
return b
|
|
}
|