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refactor: dbm重构、调整metadata与dialect接口

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This commit is contained in:
meilin.huang
2024-11-01 17:27:22 +08:00
parent af14be9801
commit 74ae031853
36 changed files with 1216 additions and 1384 deletions
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220
server/internal/db/dbm/mssql/metadata.go
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@@ -22,13 +22,13 @@ const (
MSSQL_COLUMN_MA_KEY = "MSSQL_COLUMN_MA"
)
type MssqlMetaData struct {
dbi.DefaultMetaData
type MssqlMetadata struct {
dbi.DefaultMetadata
dc *dbi.DbConn
}
func (md *MssqlMetaData) GetDbServer() (*dbi.DbServer, error) {
func (md *MssqlMetadata) GetDbServer() (*dbi.DbServer, error) {
_, res, err := md.dc.Query("SELECT @@VERSION as version")
if err != nil {
return nil, err
@@ -39,7 +39,7 @@ func (md *MssqlMetaData) GetDbServer() (*dbi.DbServer, error) {
return ds, nil
}
func (md *MssqlMetaData) GetDbNames() ([]string, error) {
func (md *MssqlMetadata) GetDbNames() ([]string, error) {
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_DBS_KEY))
if err != nil {
return nil, err
@@ -54,11 +54,11 @@ func (md *MssqlMetaData) GetDbNames() ([]string, error) {
}
// 获取表基础元信息, 如表名等
func (md *MssqlMetaData) GetTables(tableNames ...string) ([]dbi.Table, error) {
meta := md.dc.GetMetaData()
func (md *MssqlMetadata) GetTables(tableNames ...string) ([]dbi.Table, error) {
dialect := md.dc.GetDialect()
schema := md.dc.Info.CurrentSchema()
names := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
return fmt.Sprintf("'%s'", meta.RemoveQuote(val))
return fmt.Sprintf("'%s'", dialect.RemoveQuote(val))
}), ",")
var res []map[string]any
@@ -89,11 +89,11 @@ func (md *MssqlMetaData) GetTables(tableNames ...string) ([]dbi.Table, error) {
}
// 获取列元信息, 如列名等
func (md *MssqlMetaData) GetColumns(tableNames ...string) ([]dbi.Column, error) {
meta := md.dc.GetMetaData()
columnHelper := meta.GetColumnHelper()
func (md *MssqlMetadata) GetColumns(tableNames ...string) ([]dbi.Column, error) {
dialect := md.dc.GetDialect()
columnHelper := dialect.GetColumnHelper()
tableName := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
return fmt.Sprintf("'%s'", meta.RemoveQuote(val))
return fmt.Sprintf("'%s'", dialect.RemoveQuote(val))
}), ",")
_, res, err := md.dc.Query(fmt.Sprintf(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_COLUMN_MA_KEY), tableName), md.dc.Info.CurrentSchema())
@@ -126,7 +126,7 @@ func (md *MssqlMetaData) GetColumns(tableNames ...string) ([]dbi.Column, error)
}
// 获取表主键字段名，不存在主键标识则默认第一个字段
func (md *MssqlMetaData) GetPrimaryKey(tablename string) (string, error) {
func (md *MssqlMetadata) GetPrimaryKey(tablename string) (string, error) {
columns, err := md.GetColumns(tablename)
if err != nil {
return "", err
@@ -145,7 +145,7 @@ func (md *MssqlMetaData) GetPrimaryKey(tablename string) (string, error) {
}
// 需要收集唯一键涉及的字段，所以需要查询出带主键的索引
func (md *MssqlMetaData) getTableIndexWithPK(tableName string) ([]dbi.Index, error) {
func (md *MssqlMetadata) getTableIndexWithPK(tableName string) ([]dbi.Index, error) {
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_INDEX_INFO_KEY), md.dc.Info.CurrentSchema(), tableName)
if err != nil {
return nil, err
@@ -182,7 +182,7 @@ func (md *MssqlMetaData) getTableIndexWithPK(tableName string) ([]dbi.Index, err
}
// 获取表索引信息
func (md *MssqlMetaData) GetTableIndex(tableName string) ([]dbi.Index, error) {
func (md *MssqlMetadata) GetTableIndex(tableName string) ([]dbi.Index, error) {
indexs, _ := md.getTableIndexWithPK(tableName)
result := make([]dbi.Index, 0)
// 过滤掉主键索引
@@ -195,175 +195,8 @@ func (md *MssqlMetaData) GetTableIndex(tableName string) ([]dbi.Index, error) {
return result, nil
}
func (md *MssqlMetaData) CopyTableDDL(tableName string, newTableName string) (string, error) {
if newTableName == "" {
newTableName = tableName
}
meta := md.dc.GetMetaData()
// 查询表名和表注释, 设置表注释
tbs, err := md.GetTables(tableName)
if err != nil || len(tbs) < 1 {
logx.Errorf("获取表信息失败, %s", tableName)
return "", err
}
tabInfo := &dbi.Table{
TableName: newTableName,
TableComment: tbs[0].TableComment,
}
// 查询列信息
columns, err := md.GetColumns(tableName)
if err != nil {
logx.Errorf("获取列信息失败, %s", tableName)
return "", err
}
sqlArr := meta.GenerateTableDDL(columns, *tabInfo, true)
// 设置索引
indexs, err := md.GetTableIndex(tableName)
if err != nil {
logx.Errorf("获取索引信息失败, %s", tableName)
return strings.Join(sqlArr, ";"), err
}
sqlArr = append(sqlArr, meta.GenerateIndexDDL(indexs, *tabInfo)...)
return strings.Join(sqlArr, ";"), nil
}
// 获取建索引ddl
func (md *MssqlMetaData) GenerateIndexDDL(indexs []dbi.Index, tableInfo dbi.Table) []string {
tbName := tableInfo.TableName
meta := md.dc.GetMetaData()
sqls := make([]string, 0)
comments := make([]string, 0)
for _, index := range indexs {
unique := ""
if index.IsUnique {
unique = "unique"
}
// 取出列名，添加引号
cols := strings.Split(index.ColumnName, ",")
colNames := make([]string, len(cols))
for i, name := range cols {
colNames[i] = meta.QuoteIdentifier(name)
}
sqls = append(sqls, fmt.Sprintf("create %s NONCLUSTERED index %s on %s.%s(%s)", unique, meta.QuoteIdentifier(index.IndexName), meta.QuoteIdentifier(md.dc.Info.CurrentSchema()), meta.QuoteIdentifier(tbName), strings.Join(colNames, ",")))
if index.IndexComment != "" {
comment := meta.QuoteEscape(index.IndexComment)
comments = append(comments, fmt.Sprintf("EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s', N'INDEX', N'%s'", comment, md.dc.Info.CurrentSchema(), tbName, index.IndexName))
}
}
if len(comments) > 0 {
sqls = append(sqls, comments...)
}
return sqls
}
func (md *MssqlMetaData) genColumnBasicSql(column dbi.Column) string {
meta := md.dc.GetMetaData()
colName := meta.QuoteIdentifier(column.ColumnName)
dataType := string(column.DataType)
incr := ""
if column.IsIdentity {
incr = " IDENTITY(1,1)"
}
nullAble := ""
if !column.Nullable {
nullAble = " NOT NULL"
}
defVal := "" // 默认值需要判断引号，如函数是不需要引号的 // 为了防止跨源函数不支持 当默认值是函数时，不需要设置默认值
if column.ColumnDefault != "" && !strings.Contains(column.ColumnDefault, "(") {
// 哪些字段类型默认值需要加引号
mark := false
if collx.ArrayAnyMatches([]string{"char", "text", "date", "time", "lob"}, dataType) {
// 当数据类型是日期时间，默认值是日期时间函数时，默认值不需要引号
if collx.ArrayAnyMatches([]string{"date", "time"}, strings.ToLower(dataType)) &&
collx.ArrayAnyMatches([]string{"DATE", "TIME"}, strings.ToUpper(column.ColumnDefault)) {
mark = false
} else {
mark = true
}
}
if mark {
defVal = fmt.Sprintf(" DEFAULT '%s'", column.ColumnDefault)
} else {
defVal = fmt.Sprintf(" DEFAULT %s", column.ColumnDefault)
}
}
columnSql := fmt.Sprintf(" %s %s%s%s%s", colName, column.GetColumnType(), incr, nullAble, defVal)
return columnSql
}
// 获取建表ddl
func (md *MssqlMetaData) GenerateTableDDL(columns []dbi.Column, tableInfo dbi.Table, dropBeforeCreate bool) []string {
tbName := tableInfo.TableName
schemaName := md.dc.Info.CurrentSchema()
meta := md.dc.GetMetaData()
sqlArr := make([]string, 0)
// 删除表
if dropBeforeCreate {
sqlArr = append(sqlArr, fmt.Sprintf("DROP TABLE IF EXISTS %s.%s", meta.QuoteIdentifier(schemaName), meta.QuoteIdentifier(tbName)))
}
// 组装建表语句
createSql := fmt.Sprintf("CREATE TABLE %s.%s (\n", meta.QuoteIdentifier(schemaName), meta.QuoteIdentifier(tbName))
fields := make([]string, 0)
pks := make([]string, 0)
columnComments := make([]string, 0)
for _, column := range columns {
if column.IsPrimaryKey {
pks = append(pks, meta.QuoteIdentifier(column.ColumnName))
}
fields = append(fields, md.genColumnBasicSql(column))
commentTmp := "EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s', N'COLUMN', N'%s'"
// 防止注释内含有特殊字符串导致sql出错
if column.ColumnComment != "" {
comment := meta.QuoteEscape(column.ColumnComment)
columnComments = append(columnComments, fmt.Sprintf(commentTmp, comment, md.dc.Info.CurrentSchema(), tbName, column.ColumnName))
}
}
// create
createSql += strings.Join(fields, ",\n")
if len(pks) > 0 {
createSql += fmt.Sprintf(", \n PRIMARY KEY CLUSTERED (%s)", strings.Join(pks, ","))
}
createSql += "\n)"
// comment
tableCommentSql := ""
if tableInfo.TableComment != "" {
commentTmp := "EXECUTE sp_addextendedproperty N'MS_Description', N'%s', N'SCHEMA', N'%s', N'TABLE', N'%s'"
tableCommentSql = fmt.Sprintf(commentTmp, meta.QuoteEscape(tableInfo.TableComment), md.dc.Info.CurrentSchema(), tbName)
}
sqlArr = append(sqlArr, createSql)
if tableCommentSql != "" {
sqlArr = append(sqlArr, tableCommentSql)
}
if len(columnComments) > 0 {
sqlArr = append(sqlArr, columnComments...)
}
return sqlArr
}
// 获取建表ddl
func (md *MssqlMetaData) GetTableDDL(tableName string, dropBeforeCreate bool) (string, error) {
func (md *MssqlMetadata) GetTableDDL(tableName string, dropBeforeCreate bool) (string, error) {
// 1.获取表信息
tbs, err := md.GetTables(tableName)
tableInfo := &dbi.Table{}
@@ -380,7 +213,8 @@ func (md *MssqlMetaData) GetTableDDL(tableName string, dropBeforeCreate bool) (s
logx.Errorf("获取列信息失败, %s", tableName)
return "", err
}
tableDDLArr := md.GenerateTableDDL(columns, *tableInfo, dropBeforeCreate)
dialect := md.dc.GetDialect()
tableDDLArr := dialect.GenerateTableDDL(columns, *tableInfo, dropBeforeCreate)
// 3.获取索引信息
indexs, err := md.GetTableIndex(tableName)
if err != nil {
@@ -388,11 +222,11 @@ func (md *MssqlMetaData) GetTableDDL(tableName string, dropBeforeCreate bool) (s
return "", err
}
// 组装返回
tableDDLArr = append(tableDDLArr, md.GenerateIndexDDL(indexs, *tableInfo)...)
tableDDLArr = append(tableDDLArr, dialect.GenerateIndexDDL(indexs, *tableInfo)...)
return strings.Join(tableDDLArr, ";\n"), nil
}
func (md *MssqlMetaData) GetSchemas() ([]string, error) {
func (md *MssqlMetadata) GetSchemas() ([]string, error) {
_, res, err := md.dc.Query(dbi.GetLocalSql(MSSQL_META_FILE, MSSQL_DB_SCHEMAS_KEY))
if err != nil {
return nil, err
@@ -404,19 +238,3 @@ func (md *MssqlMetaData) GetSchemas() ([]string, error) {
}
return schemas, nil
}
func (md *MssqlMetaData) GetIdentifierQuoteString() string {
return "["
}
func (md *MssqlMetaData) GetDataHelper() dbi.DataHelper {
return new(DataHelper)
}
func (md *MssqlMetaData) GetColumnHelper() dbi.ColumnHelper {
return new(ColumnHelper)
}
func (md *MssqlMetaData) GetDumpHelper() dbi.DumpHelper {
return new(DumpHelper)
}