mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-02 23:40:24 +08:00
378 lines
11 KiB
Go
378 lines
11 KiB
Go
package dm
|
||
|
||
import (
|
||
"fmt"
|
||
"mayfly-go/internal/db/dbm/dbi"
|
||
"mayfly-go/pkg/errorx"
|
||
"mayfly-go/pkg/utils/anyx"
|
||
"mayfly-go/pkg/utils/collx"
|
||
"mayfly-go/pkg/utils/stringx"
|
||
"regexp"
|
||
"strings"
|
||
"time"
|
||
)
|
||
|
||
const (
|
||
DM_META_FILE = "metasql/dm_meta.sql"
|
||
DM_DB_SCHEMAS = "DM_DB_SCHEMAS"
|
||
DM_TABLE_INFO_KEY = "DM_TABLE_INFO"
|
||
DM_INDEX_INFO_KEY = "DM_INDEX_INFO"
|
||
DM_COLUMN_MA_KEY = "DM_COLUMN_MA"
|
||
)
|
||
|
||
type DMMetaData struct {
|
||
dbi.DefaultMetaData
|
||
|
||
dc *dbi.DbConn
|
||
}
|
||
|
||
func (dd *DMMetaData) GetDbServer() (*dbi.DbServer, error) {
|
||
_, res, err := dd.dc.Query("select * from v$instance")
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
ds := &dbi.DbServer{
|
||
Version: anyx.ConvString(res[0]["SVR_VERSION"]),
|
||
}
|
||
return ds, nil
|
||
}
|
||
|
||
func (dd *DMMetaData) GetDbNames() ([]string, error) {
|
||
_, res, err := dd.dc.Query("SELECT name AS DBNAME FROM v$database")
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
databases := make([]string, 0)
|
||
for _, re := range res {
|
||
databases = append(databases, anyx.ConvString(re["DBNAME"]))
|
||
}
|
||
|
||
return databases, nil
|
||
}
|
||
|
||
func (dd *DMMetaData) GetTables(tableNames ...string) ([]dbi.Table, error) {
|
||
names := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
|
||
return fmt.Sprintf("'%s'", dbi.RemoveQuote(dd, val))
|
||
}), ",")
|
||
|
||
var res []map[string]any
|
||
var err error
|
||
|
||
sql, err := stringx.TemplateParse(dbi.GetLocalSql(DM_META_FILE, DM_TABLE_INFO_KEY), collx.M{"tableNames": names})
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
_, res, err = dd.dc.Query(sql)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
tables := make([]dbi.Table, 0)
|
||
for _, re := range res {
|
||
tables = append(tables, dbi.Table{
|
||
TableName: anyx.ConvString(re["TABLE_NAME"]),
|
||
TableComment: anyx.ConvString(re["TABLE_COMMENT"]),
|
||
CreateTime: anyx.ConvString(re["CREATE_TIME"]),
|
||
TableRows: anyx.ConvInt(re["TABLE_ROWS"]),
|
||
DataLength: anyx.ConvInt64(re["DATA_LENGTH"]),
|
||
IndexLength: anyx.ConvInt64(re["INDEX_LENGTH"]),
|
||
})
|
||
}
|
||
return tables, nil
|
||
}
|
||
|
||
// 获取列元信息, 如列名等
|
||
func (dd *DMMetaData) GetColumns(tableNames ...string) ([]dbi.Column, error) {
|
||
tableName := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
|
||
return fmt.Sprintf("'%s'", dbi.RemoveQuote(dd, val))
|
||
}), ",")
|
||
|
||
_, res, err := dd.dc.Query(fmt.Sprintf(dbi.GetLocalSql(DM_META_FILE, DM_COLUMN_MA_KEY), tableName))
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
columns := make([]dbi.Column, 0)
|
||
for _, re := range res {
|
||
columns = append(columns, dbi.Column{
|
||
TableName: anyx.ConvString(re["TABLE_NAME"]),
|
||
ColumnName: anyx.ConvString(re["COLUMN_NAME"]),
|
||
ColumnType: anyx.ConvString(re["COLUMN_TYPE"]),
|
||
ColumnComment: anyx.ConvString(re["COLUMN_COMMENT"]),
|
||
Nullable: anyx.ConvString(re["NULLABLE"]),
|
||
IsPrimaryKey: anyx.ConvInt(re["IS_PRIMARY_KEY"]) == 1,
|
||
IsIdentity: anyx.ConvInt(re["IS_IDENTITY"]) == 1,
|
||
ColumnDefault: anyx.ConvString(re["COLUMN_DEFAULT"]),
|
||
NumScale: anyx.ConvInt(re["NUM_SCALE"]),
|
||
})
|
||
}
|
||
return columns, nil
|
||
}
|
||
|
||
func (dd *DMMetaData) GetPrimaryKey(tablename string) (string, error) {
|
||
columns, err := dd.GetColumns(tablename)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
if len(columns) == 0 {
|
||
return "", errorx.NewBiz("[%s] 表不存在", tablename)
|
||
}
|
||
for _, v := range columns {
|
||
if v.IsPrimaryKey {
|
||
return v.ColumnName, nil
|
||
}
|
||
}
|
||
|
||
return columns[0].ColumnName, nil
|
||
}
|
||
|
||
// 获取表索引信息
|
||
func (dd *DMMetaData) GetTableIndex(tableName string) ([]dbi.Index, error) {
|
||
_, res, err := dd.dc.Query(fmt.Sprintf(dbi.GetLocalSql(DM_META_FILE, DM_INDEX_INFO_KEY), tableName))
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
indexs := make([]dbi.Index, 0)
|
||
for _, re := range res {
|
||
indexs = append(indexs, dbi.Index{
|
||
IndexName: anyx.ConvString(re["INDEX_NAME"]),
|
||
ColumnName: anyx.ConvString(re["COLUMN_NAME"]),
|
||
IndexType: anyx.ConvString(re["INDEX_TYPE"]),
|
||
IndexComment: anyx.ConvString(re["INDEX_COMMENT"]),
|
||
IsUnique: anyx.ConvInt(re["IS_UNIQUE"]) == 1,
|
||
SeqInIndex: anyx.ConvInt(re["SEQ_IN_INDEX"]),
|
||
})
|
||
}
|
||
// 把查询结果以索引名分组，索引字段以逗号连接
|
||
result := make([]dbi.Index, 0)
|
||
key := ""
|
||
for _, v := range indexs {
|
||
// 当前的索引名
|
||
in := v.IndexName
|
||
if key == in {
|
||
// 索引字段已根据名称和顺序排序，故取最后一个即可
|
||
i := len(result) - 1
|
||
// 同索引字段以逗号连接
|
||
result[i].ColumnName = result[i].ColumnName + "," + v.ColumnName
|
||
} else {
|
||
key = in
|
||
result = append(result, v)
|
||
}
|
||
}
|
||
return result, nil
|
||
}
|
||
|
||
// 获取建表ddl
|
||
func (dd *DMMetaData) GetTableDDL(tableName string) (string, error) {
|
||
ddlSql := fmt.Sprintf("CALL SP_TABLEDEF((SELECT SF_GET_SCHEMA_NAME_BY_ID(CURRENT_SCHID)), '%s')", tableName)
|
||
_, res, err := dd.dc.Query(ddlSql)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
// 建表ddl
|
||
var builder strings.Builder
|
||
for _, re := range res {
|
||
builder.WriteString(re["COLUMN_VALUE"].(string))
|
||
}
|
||
|
||
// 表注释
|
||
_, res, err = dd.dc.Query(fmt.Sprintf(`
|
||
select OWNER, COMMENTS from ALL_TAB_COMMENTS where TABLE_TYPE='TABLE' and TABLE_NAME = '%s'
|
||
and owner = (SELECT SF_GET_SCHEMA_NAME_BY_ID(CURRENT_SCHID))
|
||
`, tableName))
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
for _, re := range res {
|
||
// COMMENT ON TABLE "SYS_MENU" IS '菜单表';
|
||
if re["COMMENTS"] != nil {
|
||
tableComment := fmt.Sprintf("\n\nCOMMENT ON TABLE \"%s\".\"%s\" IS '%s';", re["OWNER"].(string), tableName, re["COMMENTS"].(string))
|
||
builder.WriteString(tableComment)
|
||
}
|
||
}
|
||
|
||
// 字段注释
|
||
fieldSql := fmt.Sprintf(`
|
||
SELECT OWNER, COLUMN_NAME, COMMENTS
|
||
FROM USER_COL_COMMENTS
|
||
WHERE OWNER = (SELECT SF_GET_SCHEMA_NAME_BY_ID(CURRENT_SCHID))
|
||
AND TABLE_NAME = '%s'
|
||
`, tableName)
|
||
_, res, err = dd.dc.Query(fieldSql)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
|
||
builder.WriteString("\n")
|
||
for _, re := range res {
|
||
// COMMENT ON COLUMN "SYS_MENU"."BIZ_CODE" IS '业务编码，应用编码1';
|
||
if re["COMMENTS"] != nil {
|
||
fieldComment := fmt.Sprintf("\nCOMMENT ON COLUMN \"%s\".\"%s\".\"%s\" IS '%s';", re["OWNER"].(string), tableName, re["COLUMN_NAME"].(string), re["COMMENTS"].(string))
|
||
builder.WriteString(fieldComment)
|
||
}
|
||
}
|
||
|
||
// 索引信息
|
||
indexSql := fmt.Sprintf(`
|
||
select indexdef(b.object_id,1) as INDEX_DEF from ALL_INDEXES a
|
||
join ALL_objects b on a.owner = b.owner and b.object_name = a.index_name and b.object_type = 'INDEX'
|
||
where a.owner = (SELECT SF_GET_SCHEMA_NAME_BY_ID(CURRENT_SCHID))
|
||
and a.table_name = '%s'
|
||
and indexdef(b.object_id,1) != '禁止查看系统定义的索引信息'
|
||
`, tableName)
|
||
_, res, err = dd.dc.Query(indexSql)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
for _, re := range res {
|
||
builder.WriteString("\n\n" + re["INDEX_DEF"].(string))
|
||
}
|
||
|
||
return builder.String(), nil
|
||
}
|
||
|
||
// 获取DM当前连接的库可访问的schemaNames
|
||
func (dd *DMMetaData) GetSchemas() ([]string, error) {
|
||
sql := dbi.GetLocalSql(DM_META_FILE, DM_DB_SCHEMAS)
|
||
_, res, err := dd.dc.Query(sql)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
schemaNames := make([]string, 0)
|
||
for _, re := range res {
|
||
schemaNames = append(schemaNames, anyx.ConvString(re["SCHEMA_NAME"]))
|
||
}
|
||
return schemaNames, nil
|
||
}
|
||
|
||
func (dd *DMMetaData) GetDataConverter() dbi.DataConverter {
|
||
return converter
|
||
}
|
||
|
||
var (
|
||
// 数字类型
|
||
numberRegexp = regexp.MustCompile(`(?i)int|double|float|number|decimal|byte|bit`)
|
||
// 日期时间类型
|
||
datetimeRegexp = regexp.MustCompile(`(?i)datetime|timestamp`)
|
||
// 日期类型
|
||
dateRegexp = regexp.MustCompile(`(?i)date`)
|
||
// 时间类型
|
||
timeRegexp = regexp.MustCompile(`(?i)time`)
|
||
// 定义正则表达式，匹配括号内的数字
|
||
bracketsRegexp = regexp.MustCompile(`\((\d+)\)`)
|
||
|
||
converter = new(DataConverter)
|
||
|
||
// 达梦数据类型 对应 公共数据类型
|
||
commonColumnMap = map[string]dbi.ColumnDataType{
|
||
|
||
"CHAR": dbi.CommonTypeChar, // 字符数据类型
|
||
"VARCHAR": dbi.CommonTypeVarchar,
|
||
"TEXT": dbi.CommonTypeText,
|
||
"LONG": dbi.CommonTypeText,
|
||
"LONGVARCHAR": dbi.CommonTypeLongtext,
|
||
"IMAGE": dbi.CommonTypeLongtext,
|
||
"LONGVARBINARY": dbi.CommonTypeLongtext,
|
||
"BLOB": dbi.CommonTypeBlob,
|
||
"CLOB": dbi.CommonTypeText,
|
||
"NUMERIC": dbi.CommonTypeNumber, // 精确数值数据类型
|
||
"DECIMAL": dbi.CommonTypeNumber,
|
||
"NUMBER": dbi.CommonTypeNumber,
|
||
"INTEGER": dbi.CommonTypeInt,
|
||
"INT": dbi.CommonTypeInt,
|
||
"BIGINT": dbi.CommonTypeBigint,
|
||
"TINYINT": dbi.CommonTypeTinyint,
|
||
"BYTE": dbi.CommonTypeTinyint,
|
||
"SMALLINT": dbi.CommonTypeSmallint,
|
||
"BIT": dbi.CommonTypeTinyint,
|
||
"DOUBLE": dbi.CommonTypeNumber, // 近似数值类型
|
||
"FLOAT": dbi.CommonTypeNumber,
|
||
"DATE": dbi.CommonTypeDate, // 一般日期时间数据类型
|
||
"TIME": dbi.CommonTypeTime,
|
||
"TIMESTAMP": dbi.CommonTypeTimestamp,
|
||
}
|
||
|
||
// 公共数据类型 对应 达梦数据类型
|
||
dmColumnMap = map[dbi.ColumnDataType]string{
|
||
dbi.CommonTypeVarchar: "VARCHAR",
|
||
dbi.CommonTypeChar: "CHAR",
|
||
dbi.CommonTypeText: "TEXT",
|
||
dbi.CommonTypeBlob: "BLOB",
|
||
dbi.CommonTypeLongblob: "TEXT",
|
||
dbi.CommonTypeLongtext: "TEXT",
|
||
dbi.CommonTypeBinary: "TEXT",
|
||
dbi.CommonTypeMediumblob: "TEXT",
|
||
dbi.CommonTypeMediumtext: "TEXT",
|
||
dbi.CommonTypeVarbinary: "TEXT",
|
||
dbi.CommonTypeInt: "INT",
|
||
dbi.CommonTypeSmallint: "SMALLINT",
|
||
dbi.CommonTypeTinyint: "TINYINT",
|
||
dbi.CommonTypeNumber: "NUMBER",
|
||
dbi.CommonTypeBigint: "BIGINT",
|
||
dbi.CommonTypeDatetime: "TIMESTAMP",
|
||
dbi.CommonTypeDate: "DATE",
|
||
dbi.CommonTypeTime: "DATE",
|
||
dbi.CommonTypeTimestamp: "TIMESTAMP",
|
||
dbi.CommonTypeEnum: "TEXT",
|
||
dbi.CommonTypeJSON: "TEXT",
|
||
}
|
||
)
|
||
|
||
type DataConverter struct {
|
||
}
|
||
|
||
func (dd *DataConverter) GetDataType(dbColumnType string) dbi.DataType {
|
||
if numberRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeNumber
|
||
}
|
||
if datetimeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDateTime
|
||
}
|
||
if dateRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeDate
|
||
}
|
||
if timeRegexp.MatchString(dbColumnType) {
|
||
return dbi.DataTypeTime
|
||
}
|
||
return dbi.DataTypeString
|
||
}
|
||
|
||
func (dd *DataConverter) FormatData(dbColumnValue any, dataType dbi.DataType) string {
|
||
str := anyx.ToString(dbColumnValue)
|
||
switch dataType {
|
||
case dbi.DataTypeDateTime: // "2024-01-02T22:08:22.275697+08:00"
|
||
res, _ := time.Parse(time.RFC3339, str)
|
||
return res.Format(time.DateTime)
|
||
case dbi.DataTypeDate: // "2024-01-02T00:00:00+08:00"
|
||
res, _ := time.Parse(time.RFC3339, str)
|
||
return res.Format(time.DateOnly)
|
||
case dbi.DataTypeTime: // "0000-01-01T22:08:22.275688+08:00"
|
||
res, _ := time.Parse(time.RFC3339, str)
|
||
return res.Format(time.TimeOnly)
|
||
}
|
||
return str
|
||
}
|
||
|
||
func (dd *DataConverter) ParseData(dbColumnValue any, dataType dbi.DataType) any {
|
||
// 如果dataType是datetime而dbColumnValue是string类型，则需要转换为time.Time类型
|
||
_, ok := dbColumnValue.(string)
|
||
if ok {
|
||
if dataType == dbi.DataTypeDateTime {
|
||
res, _ := time.Parse(time.RFC3339, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeDate {
|
||
res, _ := time.Parse(time.DateOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
if dataType == dbi.DataTypeTime {
|
||
res, _ := time.Parse(time.TimeOnly, anyx.ToString(dbColumnValue))
|
||
return res
|
||
}
|
||
}
|
||
return dbColumnValue
|
||
}
|