mirror of
https://github.com/ManyakRus/crud_generator.git
synced 2024-12-23 12:44:13 +02:00
334 lines
8.5 KiB
Go
334 lines
8.5 KiB
Go
package postgres
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"github.com/ManyakRus/crud_generator/internal/config"
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"github.com/ManyakRus/crud_generator/internal/mini_func"
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"github.com/ManyakRus/crud_generator/internal/types"
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"github.com/ManyakRus/crud_generator/pkg/dbmeta"
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"github.com/ManyakRus/starter/contextmain"
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"github.com/ManyakRus/starter/log"
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"github.com/ManyakRus/starter/postgres_gorm"
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"gorm.io/gorm"
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"strings"
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"time"
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)
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type TableColumn struct {
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TableName string `json:"table_name" gorm:"column:table_name;default:''"`
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ColumnName string `json:"column_name" gorm:"column:column_name;default:''"`
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ColumnType string `json:"type_name" gorm:"column:type_name;default:''"`
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ColumnIsIdentity string `json:"is_identity" gorm:"column:is_identity;default:''"`
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ColumnIsNullable string `json:"is_nullable" gorm:"column:is_nullable;default:''"`
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ColumnDescription string `json:"description" gorm:"column:description;default:''"`
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ColumnTableKey string `json:"table_key" gorm:"column:table_key;default:''"`
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ColumnColumnKey string `json:"column_key" gorm:"column:column_key;default:''"`
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TableComment string `json:"table_comment" gorm:"column:table_comment;default:''"`
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}
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// FillMapTable - возвращает массив MassTable данными из БД
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func FillMapTable() (map[string]*types.Table, error) {
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var err error
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//MassTable := make([]types.Table, 0)
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MapTable := make(map[string]*types.Table, 0)
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TextSQL := `
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drop table if exists temp_keys;
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CREATE TEMPORARY TABLE temp_keys (table_from text, column_from text, table_to text, column_to text);
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------------------------------------------- Все внешние ключи ------------------------------
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insert into temp_keys
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SELECT
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(select r.relname from pg_class r where r.oid = c.conrelid) as table_from,
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UNNEST((select array_agg(attname) from pg_attribute where attrelid = c.conrelid and array[attnum] <@ c.conkey)) as column_from,
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(select r.relname from pg_class r where r.oid = c.confrelid) as table_to,
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a.attname as column_to
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FROM
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pg_constraint c
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join
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pg_attribute a
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on
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c.confrelid=a.attrelid and a.attnum = ANY(confkey)
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WHERE 1=1
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--and c.confrelid = (select oid from pg_class where relname = 'lawsuit_invoices')
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--AND c.confrelid!=c.conrelid
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;
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------------------------------------------- Все таблицы и колонки ------------------------------
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SELECT
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c.table_name,
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c.column_name,
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c.udt_name as type_name,
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c.is_identity as is_identity,
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c.is_nullable as is_nullable,
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COALESCE(pgd.description, '') as description,
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COALESCE(keys.table_to, '') as table_key,
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COALESCE(keys.column_to, '') as column_key,
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(SELECT obj_description(oid) FROM pg_class as r WHERE relkind = 'r' and r.oid = st.relid) as table_comment
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FROM
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pg_catalog.pg_statio_all_tables as st
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right join
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information_schema.columns c
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on
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c.table_schema = st.schemaname
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and c.table_name = st.relname
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left join
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pg_catalog.pg_description pgd
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on
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pgd.objoid = st.relid
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and pgd.objsubid = c.ordinal_position
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LEFT JOIN --внешние ключи
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temp_keys as keys
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ON
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keys.table_from = c.table_name
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and keys.column_from = c.column_name
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LEFT JOIN --вьюхи
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INFORMATION_SCHEMA.views as v
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ON
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v.table_schema = 'public'
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and v.table_name = c.table_name
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where 1=1
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and c.table_schema='public'
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and v.table_name is null
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--INCLUDE_TABLES
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--EXCLUDE_TABLES
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--and c.table_name = 'lawsuit_invoices'
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order by
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table_name,
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is_identity desc,
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column_name
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`
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SCHEMA := strings.Trim(postgres_gorm.Settings.DB_SCHEMA, " ")
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if SCHEMA != "" {
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TextSQL = strings.ReplaceAll(TextSQL, "public", SCHEMA)
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}
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if config.Settings.INCLUDE_TABLES != "" {
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TextSQL = strings.ReplaceAll(TextSQL, "--INCLUDE_TABLES", "and c.table_name ~* '"+config.Settings.INCLUDE_TABLES+"'")
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}
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if config.Settings.EXCLUDE_TABLES != "" {
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TextSQL = strings.ReplaceAll(TextSQL, "--EXCLUDE_TABLES", "and c.table_name !~* '"+config.Settings.EXCLUDE_TABLES+"'")
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}
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//соединение
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ctxMain := contextmain.GetContext()
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ctx, ctxCancelFunc := context.WithTimeout(ctxMain, time.Second*60)
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defer ctxCancelFunc()
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db := postgres_gorm.GetConnection()
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db.WithContext(ctx)
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//запрос
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//запустим все запросы отдельно
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var tx *gorm.DB
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sqlSlice := strings.Split(TextSQL, ";")
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len1 := len(sqlSlice)
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for i, TextSQL1 := range sqlSlice {
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//batch.Queue(TextSQL1)
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if i == len1-1 {
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tx = db.Raw(TextSQL1)
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} else {
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tx = db.Exec(TextSQL1)
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//rows.Close()
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}
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err = tx.Error
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if err != nil {
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log.Panic("DB.Raw() error:", err)
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}
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}
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//tx := db.Raw(TextSQL)
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//err = tx.Error
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//if err != nil {
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// sError := fmt.Sprint("db.Raw() error: ", err)
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// log.Panicln(sError)
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// return MassTable, err
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//}
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//ответ в структуру
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MassTableColumn := make([]TableColumn, 0)
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tx = tx.Scan(&MassTableColumn)
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err = tx.Error
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if err != nil {
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sError := fmt.Sprint("Get_error() error: ", err)
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log.Panicln(sError)
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return MapTable, err
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}
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//проверка 0 строк
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if tx.RowsAffected == 0 {
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sError := fmt.Sprint("db.Raw() RowsAffected =0 ")
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log.Warn(sError)
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err = errors.New(sError)
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//log.Panicln(sError)
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return MapTable, err
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}
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//заполним MapTable
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MapColumns := make(map[string]types.Column, 0)
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OrderNumberColumn := 0
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OrderNumberTable := 0
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TableName0 := ""
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Table1 := CreateTable()
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for _, v := range MassTableColumn {
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if v.TableName != TableName0 {
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OrderNumberColumn = 0
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Table1.MapColumns = MapColumns
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MapColumns = make(map[string]types.Column, 0)
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if TableName0 != "" {
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//MassTable = append(MassTable, Table1)
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MapTable[TableName0] = Table1
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OrderNumberTable++
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}
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Table1 = CreateTable()
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Table1.Name = v.TableName
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Table1.OrderNumber = OrderNumberTable
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Table1.Comment = v.TableComment
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}
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Column1 := types.Column{}
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Column1.Name = v.ColumnName
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Column1.Type = v.ColumnType
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//Type_go
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SQLMapping1, ok := dbmeta.GetMappings()[Column1.Type]
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if ok == false {
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log.Panic("GetMappings() ", Column1.Type, " error: not found")
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}
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Type_go := SQLMapping1.GoType
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Column1.TypeGo = Type_go
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//
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if v.ColumnIsIdentity == "YES" {
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Column1.IsIdentity = true
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}
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if v.ColumnIsNullable == "YES" {
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Column1.IsNullable = true
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}
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Column1.Description = v.ColumnDescription
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Column1.OrderNumber = OrderNumberColumn
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Column1.TableKey = v.ColumnTableKey
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Column1.ColumnKey = v.ColumnColumnKey
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MapColumns[v.ColumnName] = Column1
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//Table1.Columns = append(Table1.Columns, Column1)
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OrderNumberColumn++
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TableName0 = v.TableName
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}
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//
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if Table1.Name != "" {
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Table1.MapColumns = MapColumns
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MapTable[TableName0] = Table1
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}
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//FillTypeGo(MapTable)
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FillIDMinimum(MapTable)
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return MapTable, err
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}
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func CreateTable() *types.Table {
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Otvet := &types.Table{}
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Otvet.MapColumns = make(map[string]types.Column, 0)
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return Otvet
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}
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func FillIDMinimum(MapTable map[string]*types.Table) {
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var err error
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//соединение
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db := postgres_gorm.GetConnection()
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ctxMain := contextmain.GetContext()
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for TableName, Table1 := range MapTable {
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//текст запроса
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NameID, TypeGo := FindNameTypeID(Table1)
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if NameID == "" {
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continue
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}
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TextSQL := "SELECT Min(" + NameID + ") from \"" + postgres_gorm.Settings.DB_SCHEMA + "\".\"" + TableName + "\""
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ctx, ctxCancelFunc := context.WithTimeout(ctxMain, time.Second*60)
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defer ctxCancelFunc()
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db.WithContext(ctx)
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//запрос
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tx := db.Raw(TextSQL)
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err = tx.Error
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if err != nil {
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log.Panic("Wrong SQL query: ", TextSQL, " error: ", err)
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}
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var IDMinimum sql.NullString
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tx = tx.Scan(&IDMinimum)
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err = tx.Error
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if err != nil {
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log.Panic("Wrong SQL Scan(): ", TextSQL, " error: ", err)
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}
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//
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if TypeGo == "string" {
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Table1.IDMinimum = `"` + IDMinimum.String + `"`
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} else if mini_func.IsNumberType(TypeGo) == true {
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Table1.IDMinimum = IDMinimum.String
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}
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}
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}
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func FindNameTypeID(Table1 *types.Table) (string, string) {
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Otvet := ""
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Type := ""
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for ColumnName, Column1 := range Table1.MapColumns {
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if Column1.IsIdentity == true {
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return ColumnName, Column1.TypeGo
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}
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}
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return Otvet, Type
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}
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//// FillTypeGo - заполняет тип golang из типа postgres
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//func FillTypeGo(MapTable map[string]*types.Table) {
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//
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// for _, Table1 := range MapTable {
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// for _, Column1 := range Table1.MapColumns {
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//
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// SQLMapping1, ok := dbmeta.GetMappings()[Column1.Type]
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// if ok == false {
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// log.Panic("GetMappings() ", Column1.Type, " error: not found")
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// }
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// Type_go := SQLMapping1.GoType
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// Column1.TypeGo = Type_go
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// }
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// }
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//
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//}
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