dialect.go•1.24 kB
// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sources
import (
"context"
"fmt"
"strings"
)
// Dialect represents the dialect type of a database.
type Dialect string
func (i *Dialect) String() string {
if string(*i) != "" {
return strings.ToLower(string(*i))
}
return "googlesql"
}
func (i *Dialect) UnmarshalYAML(ctx context.Context, unmarshal func(interface{}) error) error {
var dialect string
if err := unmarshal(&dialect); err != nil {
return err
}
switch strings.ToLower(dialect) {
case "googlesql", "postgresql":
*i = Dialect(strings.ToLower(dialect))
return nil
default:
return fmt.Errorf(`dialect invalid: must be one of "googlesql", or "postgresql"`)
}
}