490 lines
13 KiB
Go
490 lines
13 KiB
Go
// Copyright 2015 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 xorm
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import (
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"crypto/tls"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/go-xorm/core"
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)
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var (
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mysqlReservedWords = map[string]bool{
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"ADD": true,
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"ALL": true,
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"ALTER": true,
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"ANALYZE": true,
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"AND": true,
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"AS": true,
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"ASC": true,
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"ASENSITIVE": true,
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"BEFORE": true,
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"BETWEEN": true,
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"BIGINT": true,
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"BINARY": true,
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"BLOB": true,
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"BOTH": true,
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"BY": true,
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"CALL": true,
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"CASCADE": true,
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"CASE": true,
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"CHANGE": true,
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"CHAR": true,
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"CHARACTER": true,
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"CHECK": true,
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"COLLATE": true,
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"COLUMN": true,
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"CONDITION": true,
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"CONNECTION": true,
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"CONSTRAINT": true,
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"CONTINUE": true,
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"CONVERT": true,
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"CREATE": true,
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"CROSS": true,
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"CURRENT_DATE": true,
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"CURRENT_TIME": true,
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"CURRENT_TIMESTAMP": true,
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"CURRENT_USER": true,
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"CURSOR": true,
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"DATABASE": true,
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"DATABASES": true,
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"DAY_HOUR": true,
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"DAY_MICROSECOND": true,
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"DAY_MINUTE": true,
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"DAY_SECOND": 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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"DELAYED": true,
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"DELETE": true,
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"DESC": true,
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"DESCRIBE": true,
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"DETERMINISTIC": true,
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"DISTINCT": true,
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"DISTINCTROW": true,
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"DIV": true,
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"DOUBLE": true,
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"DROP": true,
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"DUAL": true,
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"EACH": true,
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"ELSE": true,
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"ELSEIF": true,
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"ENCLOSED": true,
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"ESCAPED": true,
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"EXISTS": true,
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"EXIT": true,
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"EXPLAIN": true,
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"FALSE": true,
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"FETCH": true,
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"FLOAT": true,
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"FLOAT4": true,
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"FLOAT8": true,
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"FOR": true,
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"FORCE": true,
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"FOREIGN": true,
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"FROM": true,
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"FULLTEXT": true,
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"GOTO": true,
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"GRANT": true,
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"GROUP": true,
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"HAVING": true,
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"HIGH_PRIORITY": true,
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"HOUR_MICROSECOND": true,
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"HOUR_MINUTE": true,
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"HOUR_SECOND": true,
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"IF": true,
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"IGNORE": true,
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"IN": true, "INDEX": true,
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"INFILE": true, "INNER": true, "INOUT": true,
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"INSENSITIVE": true, "INSERT": true, "INT": true,
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"INT1": true, "INT2": true, "INT3": true,
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"INT4": true, "INT8": true, "INTEGER": true,
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"INTERVAL": true, "INTO": true, "IS": true,
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"ITERATE": true, "JOIN": true, "KEY": true,
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"KEYS": true, "KILL": true, "LABEL": true,
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"LEADING": true, "LEAVE": true, "LEFT": true,
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"LIKE": true, "LIMIT": true, "LINEAR": true,
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"LINES": true, "LOAD": true, "LOCALTIME": true,
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"LOCALTIMESTAMP": true, "LOCK": true, "LONG": true,
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"LONGBLOB": true, "LONGTEXT": true, "LOOP": true,
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"LOW_PRIORITY": true, "MATCH": true, "MEDIUMBLOB": true,
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"MEDIUMINT": true, "MEDIUMTEXT": true, "MIDDLEINT": true,
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"MINUTE_MICROSECOND": true, "MINUTE_SECOND": true, "MOD": true,
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"MODIFIES": true, "NATURAL": true, "NOT": true,
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"NO_WRITE_TO_BINLOG": true, "NULL": true, "NUMERIC": true,
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"ON OPTIMIZE": true, "OPTION": true,
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"OPTIONALLY": true, "OR": true, "ORDER": true,
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"OUT": true, "OUTER": true, "OUTFILE": true,
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"PRECISION": true, "PRIMARY": true, "PROCEDURE": true,
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"PURGE": true, "RAID0": true, "RANGE": true,
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"READ": true, "READS": true, "REAL": true,
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"REFERENCES": true, "REGEXP": true, "RELEASE": true,
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"RENAME": true, "REPEAT": true, "REPLACE": true,
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"REQUIRE": true, "RESTRICT": true, "RETURN": true,
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"REVOKE": true, "RIGHT": true, "RLIKE": true,
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"SCHEMA": true, "SCHEMAS": true, "SECOND_MICROSECOND": true,
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"SELECT": true, "SENSITIVE": true, "SEPARATOR": true,
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"SET": true, "SHOW": true, "SMALLINT": true,
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"SPATIAL": true, "SPECIFIC": true, "SQL": true,
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"SQLEXCEPTION": true, "SQLSTATE": true, "SQLWARNING": true,
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"SQL_BIG_RESULT": true, "SQL_CALC_FOUND_ROWS": true, "SQL_SMALL_RESULT": true,
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"SSL": true, "STARTING": true, "STRAIGHT_JOIN": true,
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"TABLE": true, "TERMINATED": true, "THEN": true,
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"TINYBLOB": true, "TINYINT": true, "TINYTEXT": true,
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"TO": true, "TRAILING": true, "TRIGGER": true,
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"TRUE": true, "UNDO": true, "UNION": true,
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"UNIQUE": true, "UNLOCK": true, "UNSIGNED": true,
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"UPDATE": true, "USAGE": true, "USE": true,
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"USING": true, "UTC_DATE": true, "UTC_TIME": true,
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"UTC_TIMESTAMP": true, "VALUES": true, "VARBINARY": true,
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"VARCHAR": true,
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"VARCHARACTER": true,
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"VARYING": true,
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"WHEN": true,
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"WHERE": true,
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"WHILE": true,
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"WITH": true,
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"WRITE": true,
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"X509": true,
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"XOR": true,
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"YEAR_MONTH": true,
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"ZEROFILL": true,
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}
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)
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type mysql struct {
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core.Base
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net string
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addr string
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params map[string]string
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loc *time.Location
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timeout time.Duration
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tls *tls.Config
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allowAllFiles bool
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allowOldPasswords bool
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clientFoundRows bool
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}
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func (db *mysql) Init(d *core.DB, uri *core.Uri, drivername, dataSourceName string) error {
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return db.Base.Init(d, db, uri, drivername, dataSourceName)
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}
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func (db *mysql) SqlType(c *core.Column) string {
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var res string
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switch t := c.SQLType.Name; t {
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case core.Bool:
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res = core.TinyInt
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c.Length = 1
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case core.Serial:
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c.IsAutoIncrement = true
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c.IsPrimaryKey = true
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c.Nullable = false
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res = core.Int
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case core.BigSerial:
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c.IsAutoIncrement = true
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c.IsPrimaryKey = true
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c.Nullable = false
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res = core.BigInt
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case core.Bytea:
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res = core.Blob
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case core.TimeStampz:
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res = core.Char
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c.Length = 64
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case core.Enum: //mysql enum
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res = core.Enum
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res += "("
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opts := ""
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for v, _ := range c.EnumOptions {
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opts += fmt.Sprintf(",'%v'", v)
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}
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res += strings.TrimLeft(opts, ",")
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res += ")"
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case core.Set: //mysql set
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res = core.Set
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res += "("
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opts := ""
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for v, _ := range c.SetOptions {
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opts += fmt.Sprintf(",'%v'", v)
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}
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res += strings.TrimLeft(opts, ",")
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res += ")"
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case core.NVarchar:
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res = core.Varchar
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case core.Uuid:
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res = core.Varchar
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c.Length = 40
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case core.Json:
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res = core.Text
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default:
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res = t
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}
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var hasLen1 bool = (c.Length > 0)
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var hasLen2 bool = (c.Length2 > 0)
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if res == core.BigInt && !hasLen1 && !hasLen2 {
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c.Length = 20
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hasLen1 = true
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}
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if hasLen2 {
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res += "(" + strconv.Itoa(c.Length) + "," + strconv.Itoa(c.Length2) + ")"
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} else if hasLen1 {
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res += "(" + strconv.Itoa(c.Length) + ")"
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}
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return res
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}
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func (db *mysql) SupportInsertMany() bool {
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return true
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}
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func (db *mysql) IsReserved(name string) bool {
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_, ok := mysqlReservedWords[name]
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return ok
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}
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func (db *mysql) Quote(name string) string {
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return "`" + name + "`"
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}
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func (db *mysql) QuoteStr() string {
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return "`"
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}
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func (db *mysql) SupportEngine() bool {
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return true
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}
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func (db *mysql) AutoIncrStr() string {
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return "AUTO_INCREMENT"
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}
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func (db *mysql) SupportCharset() bool {
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return true
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}
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func (db *mysql) IndexOnTable() bool {
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return true
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}
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func (db *mysql) IndexCheckSql(tableName, idxName string) (string, []interface{}) {
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args := []interface{}{db.DbName, tableName, idxName}
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sql := "SELECT `INDEX_NAME` FROM `INFORMATION_SCHEMA`.`STATISTICS`"
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sql += " WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ? AND `INDEX_NAME`=?"
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return sql, args
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}
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/*func (db *mysql) ColumnCheckSql(tableName, colName string) (string, []interface{}) {
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args := []interface{}{db.DbName, tableName, colName}
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sql := "SELECT `COLUMN_NAME` FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ? AND `COLUMN_NAME` = ?"
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return sql, args
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}*/
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func (db *mysql) TableCheckSql(tableName string) (string, []interface{}) {
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args := []interface{}{db.DbName, tableName}
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sql := "SELECT `TABLE_NAME` from `INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA`=? and `TABLE_NAME`=?"
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return sql, args
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}
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func (db *mysql) GetColumns(tableName string) ([]string, map[string]*core.Column, error) {
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args := []interface{}{db.DbName, tableName}
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s := "SELECT `COLUMN_NAME`, `IS_NULLABLE`, `COLUMN_DEFAULT`, `COLUMN_TYPE`," +
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" `COLUMN_KEY`, `EXTRA` FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?"
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db.LogSQL(s, args)
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rows, err := db.DB().Query(s, args...)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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cols := make(map[string]*core.Column)
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colSeq := make([]string, 0)
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for rows.Next() {
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col := new(core.Column)
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col.Indexes = make(map[string]int)
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var columnName, isNullable, colType, colKey, extra string
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var colDefault *string
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err = rows.Scan(&columnName, &isNullable, &colDefault, &colType, &colKey, &extra)
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if err != nil {
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return nil, nil, err
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}
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col.Name = strings.Trim(columnName, "` ")
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if "YES" == isNullable {
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col.Nullable = true
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}
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if colDefault != nil {
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col.Default = *colDefault
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if col.Default == "" {
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col.DefaultIsEmpty = true
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}
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}
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cts := strings.Split(colType, "(")
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colName := cts[0]
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colType = strings.ToUpper(colName)
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var len1, len2 int
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if len(cts) == 2 {
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idx := strings.Index(cts[1], ")")
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if colType == core.Enum && cts[1][0] == '\'' { //enum
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options := strings.Split(cts[1][0:idx], ",")
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col.EnumOptions = make(map[string]int)
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for k, v := range options {
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v = strings.TrimSpace(v)
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v = strings.Trim(v, "'")
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col.EnumOptions[v] = k
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}
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} else if colType == core.Set && cts[1][0] == '\'' {
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options := strings.Split(cts[1][0:idx], ",")
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col.SetOptions = make(map[string]int)
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for k, v := range options {
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v = strings.TrimSpace(v)
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v = strings.Trim(v, "'")
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col.SetOptions[v] = k
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}
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} else {
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lens := strings.Split(cts[1][0:idx], ",")
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len1, err = strconv.Atoi(strings.TrimSpace(lens[0]))
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if err != nil {
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return nil, nil, err
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}
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if len(lens) == 2 {
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len2, err = strconv.Atoi(lens[1])
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if err != nil {
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return nil, nil, err
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}
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}
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}
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}
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if colType == "FLOAT UNSIGNED" {
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colType = "FLOAT"
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}
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col.Length = len1
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col.Length2 = len2
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if _, ok := core.SqlTypes[colType]; ok {
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col.SQLType = core.SQLType{colType, len1, len2}
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} else {
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return nil, nil, errors.New(fmt.Sprintf("unkonw colType %v", colType))
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}
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if colKey == "PRI" {
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col.IsPrimaryKey = true
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}
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if colKey == "UNI" {
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//col.is
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}
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if extra == "auto_increment" {
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col.IsAutoIncrement = true
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}
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if col.SQLType.IsText() || col.SQLType.IsTime() {
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if col.Default != "" {
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col.Default = "'" + col.Default + "'"
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} else {
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if col.DefaultIsEmpty {
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col.Default = "''"
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}
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}
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}
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cols[col.Name] = col
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colSeq = append(colSeq, col.Name)
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}
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return colSeq, cols, nil
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}
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func (db *mysql) GetTables() ([]*core.Table, error) {
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args := []interface{}{db.DbName}
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s := "SELECT `TABLE_NAME`, `ENGINE`, `TABLE_ROWS`, `AUTO_INCREMENT` from " +
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"`INFORMATION_SCHEMA`.`TABLES` WHERE `TABLE_SCHEMA`=? AND (`ENGINE`='MyISAM' OR `ENGINE` = 'InnoDB' OR `ENGINE` = 'TokuDB')"
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db.LogSQL(s, args)
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rows, err := db.DB().Query(s, args...)
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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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tables := make([]*core.Table, 0)
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for rows.Next() {
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table := core.NewEmptyTable()
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var name, engine, tableRows string
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var autoIncr *string
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err = rows.Scan(&name, &engine, &tableRows, &autoIncr)
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if err != nil {
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return nil, err
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}
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table.Name = name
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table.StoreEngine = engine
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tables = append(tables, table)
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}
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return tables, nil
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}
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func (db *mysql) GetIndexes(tableName string) (map[string]*core.Index, error) {
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args := []interface{}{db.DbName, tableName}
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s := "SELECT `INDEX_NAME`, `NON_UNIQUE`, `COLUMN_NAME` FROM `INFORMATION_SCHEMA`.`STATISTICS` WHERE `TABLE_SCHEMA` = ? AND `TABLE_NAME` = ?"
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db.LogSQL(s, args)
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rows, err := db.DB().Query(s, args...)
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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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indexes := make(map[string]*core.Index, 0)
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for rows.Next() {
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var indexType int
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var indexName, colName, nonUnique string
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err = rows.Scan(&indexName, &nonUnique, &colName)
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if err != nil {
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return nil, err
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}
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if indexName == "PRIMARY" {
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continue
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}
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if "YES" == nonUnique || nonUnique == "1" {
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indexType = core.IndexType
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} else {
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indexType = core.UniqueType
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}
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colName = strings.Trim(colName, "` ")
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var isRegular bool
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if strings.HasPrefix(indexName, "IDX_"+tableName) || strings.HasPrefix(indexName, "UQE_"+tableName) {
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indexName = indexName[5+len(tableName) : len(indexName)]
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isRegular = true
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}
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var index *core.Index
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var ok bool
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if index, ok = indexes[indexName]; !ok {
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index = new(core.Index)
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index.IsRegular = isRegular
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index.Type = indexType
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index.Name = indexName
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indexes[indexName] = index
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}
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index.AddColumn(colName)
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}
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return indexes, nil
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}
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func (db *mysql) Filters() []core.Filter {
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return []core.Filter{&core.IdFilter{}}
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}
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