50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
// Copyright 2024 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,
|
|
// 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 context
|
|
|
|
import (
|
|
"maps"
|
|
|
|
"github.com/pingcap/tidb/pkg/errctx"
|
|
"github.com/pingcap/tidb/pkg/expression/exprctx"
|
|
"github.com/pingcap/tidb/pkg/types"
|
|
contextutil "github.com/pingcap/tidb/pkg/util/context"
|
|
)
|
|
|
|
// RangerContext is the context used to build range.
|
|
type RangerContext struct {
|
|
TypeCtx types.Context
|
|
ErrCtx errctx.Context
|
|
ExprCtx exprctx.BuildContext
|
|
*contextutil.RangeFallbackHandler
|
|
*contextutil.PlanCacheTracker
|
|
OptimizerFixControl map[uint64]string
|
|
UseCache bool
|
|
RegardNULLAsPoint bool
|
|
OptPrefixIndexSingleScan bool
|
|
}
|
|
|
|
// Detach detaches this context from the session context.
|
|
//
|
|
// NOTE: Though this session context can be used parallelly with this context after calling
|
|
// it, the `StatementContext` cannot. The session context should create a new `StatementContext`
|
|
// before executing another statement.
|
|
func (r *RangerContext) Detach(staticExprCtx exprctx.BuildContext) *RangerContext {
|
|
newCtx := *r
|
|
newCtx.ExprCtx = staticExprCtx
|
|
newCtx.OptimizerFixControl = maps.Clone(r.OptimizerFixControl)
|
|
return &newCtx
|
|
}
|