59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
// Copyright 2024 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package model
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import (
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"strings"
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"github.com/pingcap/tidb/pkg/parser/ast"
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)
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// DBInfo provides meta data describing a DB.
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type DBInfo struct {
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ID int64 `json:"id"` // Database ID
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Name ast.CIStr `json:"db_name"` // DB name.
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Charset string `json:"charset"`
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Collate string `json:"collate"`
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Deprecated struct { // Tables is not set in infoschema v2, use infoschema SchemaTableInfos() instead.
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Tables []*TableInfo `json:"-"` // Tables in the DB.
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}
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State SchemaState `json:"state"`
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PlacementPolicyRef *PolicyRefInfo `json:"policy_ref_info"`
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TableName2ID map[string]int64 `json:"-"`
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}
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// Clone clones DBInfo.
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func (db *DBInfo) Clone() *DBInfo {
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newInfo := *db
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newInfo.Deprecated.Tables = make([]*TableInfo, len(db.Deprecated.Tables))
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for i := range db.Deprecated.Tables {
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newInfo.Deprecated.Tables[i] = db.Deprecated.Tables[i].Clone()
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}
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return &newInfo
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}
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// Copy shallow copies DBInfo.
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func (db *DBInfo) Copy() *DBInfo {
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newInfo := *db
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newInfo.Deprecated.Tables = make([]*TableInfo, len(db.Deprecated.Tables))
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copy(newInfo.Deprecated.Tables, db.Deprecated.Tables)
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return &newInfo
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}
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// LessDBInfo is used for sorting DBInfo by DBInfo.Name.
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func LessDBInfo(a *DBInfo, b *DBInfo) int {
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return strings.Compare(a.Name.L, b.Name.L)
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}
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