forgejo/vendor/github.com/pingcap/tidb/sessionctx/db/db.go

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// Copyright 2015 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package db
import (
"github.com/pingcap/tidb/context"
)
// currentDBKeyType is a dummy type to avoid naming collision in context.
type currentDBKeyType int
// String defines a Stringer function for debugging and pretty printing.
func (k currentDBKeyType) String() string {
return "current_db"
}
const currentDBKey currentDBKeyType = 0
// BindCurrentSchema saves parameter schema as current schema name value into context.
func BindCurrentSchema(ctx context.Context, schema string) {
ctx.SetValue(currentDBKey, schema)
}
// GetCurrentSchema gets current schema name from context.
func GetCurrentSchema(ctx context.Context) string {
v, ok := ctx.Value(currentDBKey).(string)
if !ok {
return ""
}
return v
}