Paul Lecuq
945b53f28c
All checks were successful
continuous-integration/drone/push Build is passing
Reviewed-on: #1
1212 lines
35 KiB
Go
1212 lines
35 KiB
Go
// Copyright 2021 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package dialects
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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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"net/url"
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"strconv"
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"strings"
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"xorm.io/xorm/convert"
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"xorm.io/xorm/core"
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"xorm.io/xorm/internal/utils"
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"xorm.io/xorm/schemas"
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)
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func init() {
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RegisterDriver("dm", &damengDriver{})
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RegisterDialect(schemas.DAMENG, func() Dialect {
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return &dameng{}
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})
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}
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var (
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damengReservedWords = map[string]bool{
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"ACCESS": true,
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"ACCOUNT": true,
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"ACTIVATE": true,
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"ADD": true,
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"ADMIN": true,
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"ADVISE": true,
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"AFTER": true,
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"ALL": true,
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"ALL_ROWS": true,
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"ALLOCATE": true,
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"ALTER": true,
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"ANALYZE": true,
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"AND": true,
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"ANY": true,
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"ARCHIVE": true,
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"ARCHIVELOG": true,
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"ARRAY": true,
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"AS": true,
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"ASC": true,
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"AT": true,
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"AUDIT": true,
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"AUTHENTICATED": true,
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"AUTHORIZATION": true,
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"AUTOEXTEND": true,
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"AUTOMATIC": true,
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"BACKUP": true,
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"BECOME": true,
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"BEFORE": true,
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"BEGIN": true,
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"BETWEEN": true,
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"BFILE": true,
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"BITMAP": true,
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"BLOB": true,
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"BLOCK": true,
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"BODY": true,
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"BY": true,
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"CACHE": true,
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"CACHE_INSTANCES": true,
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"CANCEL": true,
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"CASCADE": true,
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"CAST": true,
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"CFILE": true,
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"CHAINED": true,
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"CHANGE": true,
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"CHAR": true,
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"CHAR_CS": true,
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"CHARACTER": true,
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"CHECK": true,
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"CHECKPOINT": true,
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"CHOOSE": true,
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"CHUNK": true,
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"CLEAR": true,
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"CLOB": true,
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"CLONE": true,
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"CLOSE": true,
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"CLOSE_CACHED_OPEN_CURSORS": true,
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"CLUSTER": true,
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"COALESCE": true,
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"COLUMN": true,
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"COLUMNS": true,
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"COMMENT": true,
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"COMMIT": true,
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"COMMITTED": true,
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"COMPATIBILITY": true,
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"COMPILE": true,
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"COMPLETE": true,
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"COMPOSITE_LIMIT": true,
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"COMPRESS": true,
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"COMPUTE": true,
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"CONNECT": true,
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"CONNECT_TIME": true,
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"CONSTRAINT": true,
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"CONSTRAINTS": true,
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"CONTENTS": true,
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"CONTINUE": true,
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"CONTROLFILE": true,
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"CONVERT": true,
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"COST": true,
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"CPU_PER_CALL": true,
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"CPU_PER_SESSION": true,
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"CREATE": true,
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"CURRENT": true,
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"CURRENT_SCHEMA": true,
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"CURREN_USER": true,
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"CURSOR": true,
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"CYCLE": true,
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"DANGLING": true,
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"DATABASE": true,
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"DATAFILE": true,
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"DATAFILES": true,
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"DATAOBJNO": true,
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"DATE": true,
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"DBA": true,
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"DBHIGH": true,
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"DBLOW": true,
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"DBMAC": true,
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"DEALLOCATE": true,
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"DEBUG": true,
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"DEC": true,
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"DECIMAL": true,
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"DECLARE": true,
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"DEFAULT": true,
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"DEFERRABLE": true,
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"DEFERRED": true,
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"DEGREE": true,
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"DELETE": true,
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"DEREF": true,
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"DESC": true,
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"DIRECTORY": true,
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"DISABLE": true,
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"DISCONNECT": true,
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"DISMOUNT": true,
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"DISTINCT": true,
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"DISTRIBUTED": true,
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"DML": true,
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"DOUBLE": true,
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"DROP": true,
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"DUMP": true,
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"EACH": true,
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"ELSE": true,
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"ENABLE": true,
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"END": true,
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"ENFORCE": true,
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"ENTRY": true,
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"ESCAPE": true,
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"EXCEPT": true,
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"EXCEPTIONS": true,
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"EXCHANGE": true,
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"EXCLUDING": true,
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"EXCLUSIVE": true,
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"EXECUTE": true,
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"EXISTS": true,
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"EXPIRE": true,
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"EXPLAIN": true,
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"EXTENT": true,
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"EXTENTS": true,
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"EXTERNALLY": true,
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"FAILED_LOGIN_ATTEMPTS": true,
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"FALSE": true,
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"FAST": true,
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"FILE": true,
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"FIRST_ROWS": true,
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"FLAGGER": true,
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"FLOAT": true,
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"FLOB": true,
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"FLUSH": true,
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"FOR": true,
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"FORCE": true,
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"FOREIGN": true,
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"FREELIST": true,
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"FREELISTS": true,
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"FROM": true,
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"FULL": true,
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"FUNCTION": true,
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"GLOBAL": true,
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"GLOBALLY": true,
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"GLOBAL_NAME": true,
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"GRANT": true,
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"GROUP": true,
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"GROUPS": true,
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"HASH": true,
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"HASHKEYS": true,
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"HAVING": true,
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"HEADER": true,
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"HEAP": true,
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"IDENTIFIED": true,
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"IDGENERATORS": true,
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"IDLE_TIME": true,
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"IF": true,
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"IMMEDIATE": true,
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"IN": true,
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"INCLUDING": true,
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"INCREMENT": true,
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"INDEX": true,
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"INDEXED": true,
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"INDEXES": true,
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"INDICATOR": true,
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"IND_PARTITION": true,
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"INITIAL": true,
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"INITIALLY": true,
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"INITRANS": true,
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"INSERT": true,
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"INSTANCE": true,
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"INSTANCES": true,
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"INSTEAD": true,
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"INT": true,
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"INTEGER": true,
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"INTERMEDIATE": true,
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"INTERSECT": true,
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"INTO": true,
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"IS": true,
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"ISOLATION": true,
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"ISOLATION_LEVEL": true,
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"KEEP": true,
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"KEY": true,
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"KILL": true,
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"LABEL": true,
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"LAYER": true,
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"LESS": true,
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"LEVEL": true,
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"LIBRARY": true,
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"LIKE": true,
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"LIMIT": true,
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"LINK": true,
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"LIST": true,
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"LOB": true,
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"LOCAL": true,
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"LOCK": true,
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"LOCKED": true,
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"LOG": true,
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"LOGFILE": true,
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"LOGGING": true,
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"LOGICAL_READS_PER_CALL": true,
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"LOGICAL_READS_PER_SESSION": true,
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"LONG": true,
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"MANAGE": true,
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"MASTER": true,
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"MAX": true,
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"MAXARCHLOGS": true,
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"MAXDATAFILES": true,
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"MAXEXTENTS": true,
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"MAXINSTANCES": true,
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"MAXLOGFILES": true,
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"MAXLOGHISTORY": true,
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"MAXLOGMEMBERS": true,
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"MAXSIZE": true,
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"MAXTRANS": true,
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"MAXVALUE": true,
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"MIN": true,
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"MEMBER": true,
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"MINIMUM": true,
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"MINEXTENTS": true,
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"MINUS": true,
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"MINVALUE": true,
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"MLSLABEL": true,
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"MLS_LABEL_FORMAT": true,
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"MODE": true,
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"MODIFY": true,
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"MOUNT": true,
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"MOVE": true,
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"MTS_DISPATCHERS": true,
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"MULTISET": true,
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"NATIONAL": true,
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"NCHAR": true,
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"NCHAR_CS": true,
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"NCLOB": true,
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"NEEDED": true,
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"NESTED": true,
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"NETWORK": true,
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"NEW": true,
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"NEXT": true,
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"NOARCHIVELOG": true,
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"NOAUDIT": true,
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"NOCACHE": true,
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"NOCOMPRESS": true,
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"NOCYCLE": true,
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"NOFORCE": true,
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"NOLOGGING": true,
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"NOMAXVALUE": true,
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"NOMINVALUE": true,
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"NONE": true,
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"NOORDER": true,
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"NOOVERRIDE": true,
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"NOPARALLEL": true,
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"NOREVERSE": true,
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"NORMAL": true,
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"NOSORT": true,
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"NOT": true,
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"NOTHING": true,
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"NOWAIT": true,
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"NULL": true,
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"NUMBER": true,
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"NUMERIC": true,
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"NVARCHAR2": true,
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"OBJECT": true,
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"OBJNO": true,
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"OBJNO_REUSE": true,
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"OF": true,
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"OFF": true,
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"OFFLINE": true,
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"OID": true,
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"OIDINDEX": true,
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"OLD": true,
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"ON": true,
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"ONLINE": true,
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"ONLY": true,
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"OPCODE": true,
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"OPEN": true,
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"OPTIMAL": true,
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"OPTIMIZER_GOAL": true,
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"OPTION": true,
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"OR": true,
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"ORDER": true,
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"ORGANIZATION": true,
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"OSLABEL": true,
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"OVERFLOW": true,
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"OWN": true,
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"PACKAGE": true,
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"PARALLEL": true,
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"PARTITION": true,
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"PASSWORD": true,
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"PASSWORD_GRACE_TIME": true,
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"PASSWORD_LIFE_TIME": true,
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"PASSWORD_LOCK_TIME": true,
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"PASSWORD_REUSE_MAX": true,
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"PASSWORD_REUSE_TIME": true,
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"PASSWORD_VERIFY_FUNCTION": true,
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"PCTFREE": true,
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"PCTINCREASE": true,
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"PCTTHRESHOLD": true,
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"PCTUSED": true,
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"PCTVERSION": true,
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"PERCENT": true,
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"PERMANENT": true,
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"PLAN": true,
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"PLSQL_DEBUG": true,
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"POST_TRANSACTION": true,
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"PRECISION": true,
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"PRESERVE": true,
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"PRIMARY": true,
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"PRIOR": true,
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"PRIVATE": true,
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"PRIVATE_SGA": true,
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"PRIVILEGE": true,
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"PRIVILEGES": true,
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"PROCEDURE": true,
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"PROFILE": true,
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"PUBLIC": true,
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"PURGE": true,
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"QUEUE": true,
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"QUOTA": true,
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"RANGE": true,
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"RAW": true,
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"RBA": true,
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"READ": true,
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"READUP": true,
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"REAL": true,
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"REBUILD": true,
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"RECOVER": true,
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"RECOVERABLE": true,
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"RECOVERY": true,
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"REF": true,
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"REFERENCES": true,
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"REFERENCING": true,
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"REFRESH": true,
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"RENAME": true,
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"REPLACE": true,
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"RESET": true,
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"RESETLOGS": true,
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"RESIZE": true,
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"RESOURCE": true,
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"RESTRICTED": true,
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"RETURN": true,
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"RETURNING": true,
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"REUSE": true,
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"REVERSE": true,
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"REVOKE": true,
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"ROLE": true,
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"ROLES": true,
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"ROLLBACK": true,
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"ROW": true,
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"ROWID": true,
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"ROWNUM": true,
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"ROWS": true,
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"RULE": true,
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"SAMPLE": true,
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"SAVEPOINT": true,
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"SB4": true,
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"SCAN_INSTANCES": true,
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"SCHEMA": true,
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"SCN": true,
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"SCOPE": true,
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"SD_ALL": true,
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"SD_INHIBIT": true,
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"SD_SHOW": true,
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"SEGMENT": true,
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"SEG_BLOCK": true,
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"SEG_FILE": true,
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"SELECT": true,
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"SEQUENCE": true,
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"SERIALIZABLE": true,
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"SESSION": true,
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"SESSION_CACHED_CURSORS": true,
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"SESSIONS_PER_USER": true,
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"SET": true,
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"SHARE": true,
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"SHARED": true,
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"SHARED_POOL": true,
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"SHRINK": true,
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"SIZE": true,
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"SKIP": true,
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"SKIP_UNUSABLE_INDEXES": true,
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"SMALLINT": true,
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"SNAPSHOT": true,
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"SOME": true,
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"SORT": true,
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"SPECIFICATION": true,
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"SPLIT": true,
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"SQL_TRACE": true,
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"STANDBY": true,
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"START": true,
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"STATEMENT_ID": true,
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"STATISTICS": true,
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"STOP": true,
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"STORAGE": true,
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"STORE": true,
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"STRUCTURE": true,
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"SUCCESSFUL": true,
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"SWITCH": true,
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"SYS_OP_ENFORCE_NOT_NULL$": true,
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"SYS_OP_NTCIMG$": true,
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"SYNONYM": true,
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"SYSDATE": true,
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"SYSDBA": true,
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"SYSOPER": true,
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"SYSTEM": true,
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"TABLE": true,
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"TABLES": true,
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"TABLESPACE": true,
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"TABLESPACE_NO": true,
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"TABNO": true,
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"TEMPORARY": true,
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"THAN": true,
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"THE": true,
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"THEN": true,
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"THREAD": true,
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"TIMESTAMP": true,
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"TIME": true,
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"TO": true,
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"TOPLEVEL": true,
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"TRACE": true,
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"TRACING": true,
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"TRANSACTION": true,
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"TRANSITIONAL": true,
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"TRIGGER": true,
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"TRIGGERS": true,
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"TRUE": true,
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"TRUNCATE": true,
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"TX": true,
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"TYPE": true,
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"UB2": true,
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"UBA": true,
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"UID": true,
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"UNARCHIVED": true,
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"UNDO": true,
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"UNION": true,
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"UNIQUE": true,
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"UNLIMITED": true,
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"UNLOCK": true,
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"UNRECOVERABLE": true,
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"UNTIL": true,
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"UNUSABLE": true,
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"UNUSED": true,
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"UPDATABLE": true,
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"UPDATE": true,
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"USAGE": true,
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"USE": true,
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"USER": true,
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"USING": true,
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"VALIDATE": true,
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"VALIDATION": true,
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"VALUE": true,
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"VALUES": true,
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"VARCHAR": true,
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"VARCHAR2": true,
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"VARYING": true,
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"VIEW": true,
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"WHEN": true,
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"WHENEVER": true,
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"WHERE": true,
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"WITH": true,
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"WITHOUT": true,
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"WORK": true,
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"WRITE": true,
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"WRITEDOWN": true,
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"WRITEUP": true,
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"XID": true,
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"YEAR": true,
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"ZONE": true,
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}
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damengQuoter = schemas.Quoter{
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Prefix: '"',
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Suffix: '"',
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IsReserved: schemas.AlwaysReserve,
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}
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)
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type dameng struct {
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Base
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}
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func (db *dameng) Init(uri *URI) error {
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db.quoter = damengQuoter
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return db.Base.Init(db, uri)
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}
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func (db *dameng) Version(ctx context.Context, queryer core.Queryer) (*schemas.Version, error) {
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rows, err := queryer.QueryContext(ctx, "SELECT * FROM V$VERSION") // select id_code
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var version string
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if !rows.Next() {
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if rows.Err() != nil {
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return nil, rows.Err()
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}
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return nil, errors.New("unknow version")
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}
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if err := rows.Scan(&version); err != nil {
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return nil, err
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}
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return &schemas.Version{
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Number: version,
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}, nil
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}
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func (db *dameng) Features() *DialectFeatures {
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return &DialectFeatures{
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AutoincrMode: SequenceAutoincrMode,
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}
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}
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// DropIndexSQL returns a SQL to drop index
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func (db *dameng) DropIndexSQL(tableName string, index *schemas.Index) string {
|
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quote := db.dialect.Quoter().Quote
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var name string
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if index.IsRegular {
|
|
name = index.XName(tableName)
|
|
} else {
|
|
name = index.Name
|
|
}
|
|
return fmt.Sprintf("DROP INDEX %v", quote(name))
|
|
}
|
|
|
|
func (db *dameng) SQLType(c *schemas.Column) string {
|
|
var res string
|
|
switch t := c.SQLType.Name; t {
|
|
case schemas.TinyInt, "BYTE":
|
|
return "TINYINT"
|
|
case schemas.SmallInt, schemas.MediumInt, schemas.Int, schemas.Integer, schemas.UnsignedTinyInt:
|
|
return "INTEGER"
|
|
case schemas.BigInt,
|
|
schemas.UnsignedBigInt, schemas.UnsignedBit, schemas.UnsignedInt,
|
|
schemas.Serial, schemas.BigSerial:
|
|
return "BIGINT"
|
|
case schemas.Bit, schemas.Bool, schemas.Boolean:
|
|
return schemas.Bit
|
|
case schemas.Uuid:
|
|
res = schemas.Varchar
|
|
c.Length = 40
|
|
case schemas.Binary:
|
|
if c.Length == 0 {
|
|
return schemas.Binary + "(MAX)"
|
|
}
|
|
case schemas.VarBinary, schemas.Blob, schemas.TinyBlob, schemas.MediumBlob, schemas.LongBlob, schemas.Bytea:
|
|
return schemas.VarBinary
|
|
case schemas.Date:
|
|
return schemas.Date
|
|
case schemas.Time:
|
|
if c.Length > 0 {
|
|
return fmt.Sprintf("%s(%d)", schemas.Time, c.Length)
|
|
}
|
|
return schemas.Time
|
|
case schemas.DateTime, schemas.TimeStamp:
|
|
res = schemas.TimeStamp
|
|
case schemas.TimeStampz:
|
|
if c.Length > 0 {
|
|
return fmt.Sprintf("TIMESTAMP(%d) WITH TIME ZONE", c.Length)
|
|
}
|
|
return "TIMESTAMP WITH TIME ZONE"
|
|
case schemas.Float:
|
|
res = "FLOAT"
|
|
case schemas.Real, schemas.Double:
|
|
res = "REAL"
|
|
case schemas.Numeric, schemas.Decimal, "NUMBER":
|
|
res = "NUMERIC"
|
|
case schemas.Text, schemas.Json:
|
|
return "TEXT"
|
|
case schemas.MediumText, schemas.LongText:
|
|
res = "CLOB"
|
|
case schemas.Char, schemas.Varchar, schemas.TinyText:
|
|
res = "VARCHAR2"
|
|
default:
|
|
res = t
|
|
}
|
|
|
|
hasLen1 := (c.Length > 0)
|
|
hasLen2 := (c.Length2 > 0)
|
|
|
|
if hasLen2 {
|
|
res += "(" + strconv.FormatInt(c.Length, 10) + "," + strconv.FormatInt(c.Length2, 10) + ")"
|
|
} else if hasLen1 {
|
|
res += "(" + strconv.FormatInt(c.Length, 10) + ")"
|
|
}
|
|
return res
|
|
}
|
|
|
|
func (db *dameng) ColumnTypeKind(t string) int {
|
|
switch strings.ToUpper(t) {
|
|
case "DATE":
|
|
return schemas.TIME_TYPE
|
|
case "CHAR", "NCHAR", "VARCHAR", "VARCHAR2", "NVARCHAR2", "LONG", "CLOB", "NCLOB":
|
|
return schemas.TEXT_TYPE
|
|
case "NUMBER":
|
|
return schemas.NUMERIC_TYPE
|
|
case "BLOB":
|
|
return schemas.BLOB_TYPE
|
|
default:
|
|
return schemas.UNKNOW_TYPE
|
|
}
|
|
}
|
|
|
|
func (db *dameng) AutoIncrStr() string {
|
|
return "IDENTITY"
|
|
}
|
|
|
|
func (db *dameng) IsReserved(name string) bool {
|
|
_, ok := damengReservedWords[strings.ToUpper(name)]
|
|
return ok
|
|
}
|
|
|
|
func (db *dameng) DropTableSQL(tableName string) (string, bool) {
|
|
return fmt.Sprintf("DROP TABLE %s", db.quoter.Quote(tableName)), false
|
|
}
|
|
|
|
// ModifyColumnSQL returns a SQL to modify SQL
|
|
func (db *dameng) ModifyColumnSQL(tableName string, col *schemas.Column) string {
|
|
s, _ := ColumnString(db.dialect, col, false, false)
|
|
return fmt.Sprintf("ALTER TABLE %s MODIFY %s", db.quoter.Quote(tableName), s)
|
|
}
|
|
|
|
func (db *dameng) CreateTableSQL(ctx context.Context, queryer core.Queryer, table *schemas.Table, tableName string) (string, bool, error) {
|
|
if tableName == "" {
|
|
tableName = table.Name
|
|
}
|
|
|
|
quoter := db.Quoter()
|
|
var b strings.Builder
|
|
if _, err := b.WriteString("CREATE TABLE "); err != nil {
|
|
return "", false, err
|
|
}
|
|
if err := quoter.QuoteTo(&b, tableName); err != nil {
|
|
return "", false, err
|
|
}
|
|
if _, err := b.WriteString(" ("); err != nil {
|
|
return "", false, err
|
|
}
|
|
|
|
pkList := table.PrimaryKeys
|
|
|
|
for i, colName := range table.ColumnsSeq() {
|
|
col := table.GetColumn(colName)
|
|
if col.SQLType.IsBool() && !col.DefaultIsEmpty {
|
|
if col.Default == "true" {
|
|
col.Default = "1"
|
|
} else if col.Default == "false" {
|
|
col.Default = "0"
|
|
}
|
|
}
|
|
|
|
s, _ := ColumnString(db, col, false, false)
|
|
if _, err := b.WriteString(s); err != nil {
|
|
return "", false, err
|
|
}
|
|
if i != len(table.ColumnsSeq())-1 {
|
|
if _, err := b.WriteString(", "); err != nil {
|
|
return "", false, err
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(pkList) > 0 {
|
|
if len(table.ColumnsSeq()) > 0 {
|
|
if _, err := b.WriteString(", "); err != nil {
|
|
return "", false, err
|
|
}
|
|
}
|
|
if _, err := b.WriteString("CONSTRAINT PK_"); err != nil {
|
|
return "", false, err
|
|
}
|
|
if _, err := b.WriteString(tableName); err != nil {
|
|
return "", false, err
|
|
}
|
|
if _, err := b.WriteString(" PRIMARY KEY ("); err != nil {
|
|
return "", false, err
|
|
}
|
|
if err := quoter.JoinWrite(&b, pkList, ","); err != nil {
|
|
return "", false, err
|
|
}
|
|
if _, err := b.WriteString(")"); err != nil {
|
|
return "", false, err
|
|
}
|
|
}
|
|
if _, err := b.WriteString(")"); err != nil {
|
|
return "", false, err
|
|
}
|
|
|
|
return b.String(), false, nil
|
|
}
|
|
|
|
func (db *dameng) SetQuotePolicy(quotePolicy QuotePolicy) {
|
|
switch quotePolicy {
|
|
case QuotePolicyNone:
|
|
q := damengQuoter
|
|
q.IsReserved = schemas.AlwaysNoReserve
|
|
db.quoter = q
|
|
case QuotePolicyReserved:
|
|
q := damengQuoter
|
|
q.IsReserved = db.IsReserved
|
|
db.quoter = q
|
|
case QuotePolicyAlways:
|
|
fallthrough
|
|
default:
|
|
db.quoter = damengQuoter
|
|
}
|
|
}
|
|
|
|
func (db *dameng) IndexCheckSQL(tableName, idxName string) (string, []interface{}) {
|
|
args := []interface{}{tableName, idxName}
|
|
return `SELECT INDEX_NAME FROM USER_INDEXES ` +
|
|
`WHERE TABLE_NAME = ? AND INDEX_NAME = ?`, args
|
|
}
|
|
|
|
func (db *dameng) IsTableExist(queryer core.Queryer, ctx context.Context, tableName string) (bool, error) {
|
|
return db.HasRecords(queryer, ctx, `SELECT table_name FROM user_tables WHERE table_name = ?`, tableName)
|
|
}
|
|
|
|
func (db *dameng) IsSequenceExist(ctx context.Context, queryer core.Queryer, seqName string) (bool, error) {
|
|
var cnt int
|
|
rows, err := queryer.QueryContext(ctx, "SELECT COUNT(*) FROM user_sequences WHERE sequence_name = ?", seqName)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
defer rows.Close()
|
|
if !rows.Next() {
|
|
if rows.Err() != nil {
|
|
return false, rows.Err()
|
|
}
|
|
return false, errors.New("query sequence failed")
|
|
}
|
|
|
|
if err := rows.Scan(&cnt); err != nil {
|
|
return false, err
|
|
}
|
|
return cnt > 0, nil
|
|
}
|
|
|
|
func (db *dameng) IsColumnExist(queryer core.Queryer, ctx context.Context, tableName, colName string) (bool, error) {
|
|
args := []interface{}{tableName, colName}
|
|
query := "SELECT column_name FROM USER_TAB_COLUMNS WHERE table_name = ?" +
|
|
" AND column_name = ?"
|
|
return db.HasRecords(queryer, ctx, query, args...)
|
|
}
|
|
|
|
var _ sql.Scanner = &dmClobScanner{}
|
|
|
|
type dmClobScanner struct {
|
|
valid bool
|
|
data string
|
|
}
|
|
|
|
type dmClobObject interface {
|
|
GetLength() (int64, error)
|
|
ReadString(int, int) (string, error)
|
|
}
|
|
|
|
// var _ dmClobObject = &dm.DmClob{}
|
|
|
|
func (d *dmClobScanner) Scan(data interface{}) error {
|
|
if data == nil {
|
|
return nil
|
|
}
|
|
|
|
switch t := data.(type) {
|
|
case dmClobObject: // *dm.DmClob
|
|
if t == nil {
|
|
return nil
|
|
}
|
|
l, err := t.GetLength()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if l == 0 {
|
|
d.valid = true
|
|
return nil
|
|
}
|
|
d.data, err = t.ReadString(1, int(l))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
d.valid = true
|
|
return nil
|
|
case []byte:
|
|
if t == nil {
|
|
return nil
|
|
}
|
|
d.data = string(t)
|
|
d.valid = true
|
|
return nil
|
|
default:
|
|
return fmt.Errorf("cannot convert %T as dmClobScanner", data)
|
|
}
|
|
}
|
|
|
|
func addSingleQuote(name string) string {
|
|
if len(name) < 2 {
|
|
return name
|
|
}
|
|
if name[0] == '\'' && name[len(name)-1] == '\'' {
|
|
return name
|
|
}
|
|
var b strings.Builder
|
|
b.WriteRune('\'')
|
|
b.WriteString(name)
|
|
b.WriteRune('\'')
|
|
return b.String()
|
|
}
|
|
|
|
func (db *dameng) GetColumns(queryer core.Queryer, ctx context.Context, tableName string) ([]string, map[string]*schemas.Column, error) {
|
|
s := `select column_name from user_cons_columns
|
|
where constraint_name = (select constraint_name from user_constraints
|
|
where table_name = ? and constraint_type ='P')`
|
|
rows, err := queryer.QueryContext(ctx, s, tableName)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
var pkNames []string
|
|
for rows.Next() {
|
|
var pkName string
|
|
err = rows.Scan(&pkName)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
pkNames = append(pkNames, pkName)
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, nil, rows.Err()
|
|
}
|
|
rows.Close()
|
|
|
|
s = `SELECT USER_TAB_COLS.COLUMN_NAME, USER_TAB_COLS.DATA_DEFAULT, USER_TAB_COLS.DATA_TYPE, USER_TAB_COLS.DATA_LENGTH,
|
|
USER_TAB_COLS.data_precision, USER_TAB_COLS.data_scale, USER_TAB_COLS.NULLABLE,
|
|
user_col_comments.comments
|
|
FROM USER_TAB_COLS
|
|
LEFT JOIN user_col_comments on user_col_comments.TABLE_NAME=USER_TAB_COLS.TABLE_NAME
|
|
AND user_col_comments.COLUMN_NAME=USER_TAB_COLS.COLUMN_NAME
|
|
WHERE USER_TAB_COLS.table_name = ?`
|
|
rows, err = queryer.QueryContext(ctx, s, tableName)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
cols := make(map[string]*schemas.Column)
|
|
colSeq := make([]string, 0)
|
|
for rows.Next() {
|
|
col := new(schemas.Column)
|
|
col.Indexes = make(map[string]int)
|
|
|
|
var colDefault dmClobScanner
|
|
var colName, nullable, dataType, dataPrecision, comment sql.NullString
|
|
var dataScale, dataLen sql.NullInt64
|
|
|
|
err = rows.Scan(&colName, &colDefault, &dataType, &dataLen, &dataPrecision,
|
|
&dataScale, &nullable, &comment)
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
|
|
if !colName.Valid {
|
|
return nil, nil, errors.New("column name is nil")
|
|
}
|
|
|
|
col.Name = strings.Trim(colName.String, `" `)
|
|
if colDefault.valid {
|
|
col.Default = colDefault.data
|
|
} else {
|
|
col.DefaultIsEmpty = true
|
|
}
|
|
|
|
if nullable.String == "Y" {
|
|
col.Nullable = true
|
|
} else {
|
|
col.Nullable = false
|
|
}
|
|
|
|
if !comment.Valid {
|
|
col.Comment = comment.String
|
|
}
|
|
if utils.IndexSlice(pkNames, col.Name) > -1 {
|
|
col.IsPrimaryKey = true
|
|
has, err := db.HasRecords(queryer, ctx, "SELECT * FROM USER_SEQUENCES WHERE SEQUENCE_NAME = ?", utils.SeqName(tableName))
|
|
if err != nil {
|
|
return nil, nil, err
|
|
}
|
|
if has {
|
|
col.IsAutoIncrement = true
|
|
}
|
|
}
|
|
|
|
var (
|
|
ignore bool
|
|
dt string
|
|
len1, len2 int64
|
|
)
|
|
|
|
dts := strings.Split(dataType.String, "(")
|
|
dt = dts[0]
|
|
if len(dts) > 1 {
|
|
lens := strings.Split(dts[1][:len(dts[1])-1], ",")
|
|
if len(lens) > 1 {
|
|
len1, _ = strconv.ParseInt(lens[0], 10, 64)
|
|
len2, _ = strconv.ParseInt(lens[1], 10, 64)
|
|
} else {
|
|
len1, _ = strconv.ParseInt(lens[0], 10, 64)
|
|
}
|
|
}
|
|
|
|
switch dt {
|
|
case "VARCHAR2":
|
|
col.SQLType = schemas.SQLType{Name: "VARCHAR2", DefaultLength: len1, DefaultLength2: len2}
|
|
case "VARCHAR":
|
|
col.SQLType = schemas.SQLType{Name: schemas.Varchar, DefaultLength: len1, DefaultLength2: len2}
|
|
case "TIMESTAMP WITH TIME ZONE":
|
|
col.SQLType = schemas.SQLType{Name: schemas.TimeStampz, DefaultLength: 0, DefaultLength2: 0}
|
|
case "NUMBER":
|
|
col.SQLType = schemas.SQLType{Name: "NUMBER", DefaultLength: len1, DefaultLength2: len2}
|
|
case "LONG", "LONG RAW", "NCLOB", "CLOB", "TEXT":
|
|
col.SQLType = schemas.SQLType{Name: schemas.Text, DefaultLength: 0, DefaultLength2: 0}
|
|
case "RAW":
|
|
col.SQLType = schemas.SQLType{Name: schemas.Binary, DefaultLength: 0, DefaultLength2: 0}
|
|
case "ROWID":
|
|
col.SQLType = schemas.SQLType{Name: schemas.Varchar, DefaultLength: 18, DefaultLength2: 0}
|
|
case "AQ$_SUBSCRIBERS":
|
|
ignore = true
|
|
default:
|
|
col.SQLType = schemas.SQLType{Name: strings.ToUpper(dt), DefaultLength: len1, DefaultLength2: len2}
|
|
}
|
|
|
|
if ignore {
|
|
continue
|
|
}
|
|
|
|
if _, ok := schemas.SqlTypes[col.SQLType.Name]; !ok {
|
|
return nil, nil, fmt.Errorf("unknown colType %v %v", dataType.String, col.SQLType)
|
|
}
|
|
|
|
if col.SQLType.Name == "TIMESTAMP" {
|
|
col.Length = dataScale.Int64
|
|
} else {
|
|
col.Length = dataLen.Int64
|
|
}
|
|
|
|
if col.SQLType.IsTime() {
|
|
if !col.DefaultIsEmpty && !strings.EqualFold(col.Default, "CURRENT_TIMESTAMP") {
|
|
col.Default = addSingleQuote(col.Default)
|
|
}
|
|
}
|
|
cols[col.Name] = col
|
|
colSeq = append(colSeq, col.Name)
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, nil, rows.Err()
|
|
}
|
|
|
|
return colSeq, cols, nil
|
|
}
|
|
|
|
func (db *dameng) GetTables(queryer core.Queryer, ctx context.Context) ([]*schemas.Table, error) {
|
|
s := "SELECT table_name FROM user_tables WHERE temporary = 'N' AND table_name NOT LIKE ?"
|
|
args := []interface{}{strings.ToUpper(db.uri.User), "%$%"}
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
tables := make([]*schemas.Table, 0)
|
|
for rows.Next() {
|
|
table := schemas.NewEmptyTable()
|
|
err = rows.Scan(&table.Name)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
tables = append(tables, table)
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, rows.Err()
|
|
}
|
|
return tables, nil
|
|
}
|
|
|
|
func (db *dameng) GetIndexes(queryer core.Queryer, ctx context.Context, tableName string) (map[string]*schemas.Index, error) {
|
|
args := []interface{}{tableName, tableName}
|
|
s := "SELECT t.column_name,i.uniqueness,i.index_name FROM user_ind_columns t,user_indexes i " +
|
|
"WHERE t.index_name = i.index_name and t.table_name = i.table_name and t.table_name =?" +
|
|
" AND t.index_name not in (SELECT index_name FROM ALL_CONSTRAINTS WHERE CONSTRAINT_TYPE='P' AND table_name = ?)"
|
|
|
|
rows, err := queryer.QueryContext(ctx, s, args...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer rows.Close()
|
|
|
|
indexes := make(map[string]*schemas.Index)
|
|
for rows.Next() {
|
|
var indexType int
|
|
var indexName, colName, uniqueness string
|
|
|
|
err = rows.Scan(&colName, &uniqueness, &indexName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
indexName = strings.Trim(indexName, `" `)
|
|
|
|
var isRegular bool
|
|
if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
|
|
indexName = indexName[5+len(tableName):]
|
|
isRegular = true
|
|
}
|
|
|
|
if uniqueness == "UNIQUE" {
|
|
indexType = schemas.UniqueType
|
|
} else {
|
|
indexType = schemas.IndexType
|
|
}
|
|
|
|
var index *schemas.Index
|
|
var ok bool
|
|
if index, ok = indexes[indexName]; !ok {
|
|
index = new(schemas.Index)
|
|
index.Type = indexType
|
|
index.Name = indexName
|
|
index.IsRegular = isRegular
|
|
indexes[indexName] = index
|
|
}
|
|
index.AddColumn(colName)
|
|
}
|
|
if rows.Err() != nil {
|
|
return nil, rows.Err()
|
|
}
|
|
return indexes, nil
|
|
}
|
|
|
|
func (db *dameng) Filters() []Filter {
|
|
return []Filter{}
|
|
}
|
|
|
|
type damengDriver struct {
|
|
baseDriver
|
|
}
|
|
|
|
// Features return features
|
|
func (d *damengDriver) Features() *DriverFeatures {
|
|
return &DriverFeatures{
|
|
SupportReturnInsertedID: false,
|
|
}
|
|
}
|
|
|
|
// Parse parse the datasource
|
|
// dm://userName:password@ip:port
|
|
func (d *damengDriver) Parse(driverName, dataSourceName string) (*URI, error) {
|
|
u, err := url.Parse(dataSourceName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if u.User == nil {
|
|
return nil, errors.New("user/password needed")
|
|
}
|
|
|
|
passwd, _ := u.User.Password()
|
|
return &URI{
|
|
DBType: schemas.DAMENG,
|
|
Proto: u.Scheme,
|
|
Host: u.Hostname(),
|
|
Port: u.Port(),
|
|
DBName: u.User.Username(),
|
|
User: u.User.Username(),
|
|
Passwd: passwd,
|
|
}, nil
|
|
}
|
|
|
|
func (d *damengDriver) GenScanResult(colType string) (interface{}, error) {
|
|
switch colType {
|
|
case "CHAR", "NCHAR", "VARCHAR", "VARCHAR2", "NVARCHAR2", "LONG", "CLOB", "NCLOB":
|
|
var s sql.NullString
|
|
return &s, nil
|
|
case "NUMBER":
|
|
var s sql.NullString
|
|
return &s, nil
|
|
case "BIGINT":
|
|
var s sql.NullInt64
|
|
return &s, nil
|
|
case "INTEGER":
|
|
var s sql.NullInt32
|
|
return &s, nil
|
|
case "DATE", "TIMESTAMP":
|
|
var s sql.NullString
|
|
return &s, nil
|
|
case "BLOB":
|
|
var r sql.RawBytes
|
|
return &r, nil
|
|
case "FLOAT":
|
|
var s sql.NullFloat64
|
|
return &s, nil
|
|
default:
|
|
var r sql.RawBytes
|
|
return &r, nil
|
|
}
|
|
}
|
|
|
|
func (d *damengDriver) Scan(ctx *ScanContext, rows *core.Rows, types []*sql.ColumnType, vv ...interface{}) error {
|
|
scanResults := make([]interface{}, 0, len(types))
|
|
replaces := make([]bool, 0, len(types))
|
|
var err error
|
|
for i, v := range vv {
|
|
var replaced bool
|
|
var scanResult interface{}
|
|
switch types[i].DatabaseTypeName() {
|
|
case "CLOB", "TEXT":
|
|
scanResult = &dmClobScanner{}
|
|
replaced = true
|
|
case "TIMESTAMP":
|
|
scanResult = &sql.NullString{}
|
|
replaced = true
|
|
default:
|
|
scanResult = v
|
|
}
|
|
|
|
scanResults = append(scanResults, scanResult)
|
|
replaces = append(replaces, replaced)
|
|
}
|
|
|
|
if err = rows.Scan(scanResults...); err != nil {
|
|
return err
|
|
}
|
|
|
|
for i, replaced := range replaces {
|
|
if replaced {
|
|
switch t := scanResults[i].(type) {
|
|
case *dmClobScanner:
|
|
var d interface{}
|
|
if t.valid {
|
|
d = t.data
|
|
} else {
|
|
d = nil
|
|
}
|
|
if err := convert.Assign(vv[i], d, ctx.DBLocation, ctx.UserLocation); err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
switch types[i].DatabaseTypeName() {
|
|
case "TIMESTAMP":
|
|
ns := t.(*sql.NullString)
|
|
if !ns.Valid {
|
|
break
|
|
}
|
|
s := ns.String
|
|
fields := strings.Split(s, "+")
|
|
if err := convert.Assign(vv[i], strings.Replace(fields[0], "T", " ", -1), ctx.DBLocation, ctx.UserLocation); err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
return fmt.Errorf("don't support convert %T to %T", t, vv[i])
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|