142 lines
3.1 KiB
Go
142 lines
3.1 KiB
Go
package gorm
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import (
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"fmt"
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"log"
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"reflect"
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"time"
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)
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type cockroach struct {
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commonDialect
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}
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func (cockroach) BinVar(i int) string {
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return fmt.Sprintf("$%v", i)
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}
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func (cockroach) SupportLastInsertId() bool {
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return false
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}
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func (cockroach) SupportUniquePrimaryKey() bool {
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return false
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}
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func (cockroach) NewUniqueKey(scope *Scope) uint64 {
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rows, err := scope.NewDB().Raw(`SELECT experimental_unique_int()`).Rows()
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if err != nil {
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scope.Err(err)
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return 0
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}
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var id int64
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for rows.Next() {
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if err := rows.Scan(&id); err != nil {
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log.Fatal("ERR UNIQUE ID", id, err)
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scope.Err(err)
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return 0
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}
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}
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log.Printf("UNIQUE ID %#v", id)
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return uint64(id)
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}
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func (cockroach) SqlTag(value reflect.Value, size int, autoIncrease bool) string {
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switch value.Kind() {
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case reflect.Bool:
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return "BOOLEAN"
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uintptr:
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if autoIncrease {
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return "INTEGER PRIMARY KEY"
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}
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return "INTEGER"
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case reflect.Int64, reflect.Uint64:
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if autoIncrease {
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return "BIGINT PRIMARY KEY"
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}
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return "BIGINT"
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case reflect.Float32, reflect.Float64:
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return "FLOAT"
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case reflect.String:
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if size > 0 && size < 65532 {
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return "VARCHAR"
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}
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return "TEXT"
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case reflect.Struct:
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if _, ok := value.Interface().(time.Time); ok {
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return "TIMESTAMP"
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}
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default:
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if _, ok := value.Interface().([]byte); ok {
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return "BYTES"
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}
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}
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panic(fmt.Sprintf("invalid sql type %s (%s) for cockroach", value.Type().Name(), value.Kind().String()))
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}
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func (s cockroach) HasTable(scope *Scope, tableName string) bool {
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rows, err := scope.NewDB().Raw("show tables").Rows()
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if err != nil {
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scope.Err(err)
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return false
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}
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defer rows.Close()
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var name string
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for rows.Next() {
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rows.Scan(&name)
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if name == tableName {
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return true
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}
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}
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return false
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}
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func (s cockroach) HasColumn(scope *Scope, tableName string, columnName string) bool {
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rows, err := scope.NewDB().Raw(fmt.Sprintf("show columns from %s", tableName)).Rows()
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if err != nil {
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scope.Err(err)
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return false
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}
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defer rows.Close()
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var column string
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for rows.Next() {
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rows.Scan(&column)
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if column == columnName {
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return true
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}
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}
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return false
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}
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func (s cockroach) HasIndex(scope *Scope, tableName string, indexName string) bool {
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/*
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var count int
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s.RawScanInt(scope, &count, fmt.Sprintf("SELECT count(*) FROM sqlite_master WHERE tbl_name = ? AND sql LIKE '%%INDEX %v ON%%'", indexName), tableName)
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return count > 0
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*/
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rows, err := scope.NewDB().Raw(fmt.Sprintf("show index from %s", tableName)).Rows()
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if err != nil {
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scope.Err(err)
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return false
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}
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defer rows.Close()
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var name string
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for rows.Next() {
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rows.Scan(nil, &name)
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if name == indexName {
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return true
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}
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}
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return false
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}
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func (cockroach) RemoveIndex(scope *Scope, indexName string) {
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scope.Err(scope.NewDB().Raw(fmt.Sprintf("DROP INDEX %v@%v", scope.QuotedTableName(), indexName)).Error)
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}
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func (s cockroach) CurrentDatabase(scope *Scope) string {
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var name string
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s.RawScanString(scope, &name, "SHOW DATABASE")
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return name
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}
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