mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-03 16:00:25 +08:00
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package dbi
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import (
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"fmt"
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"strings"
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)
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// 包装扩展MetaData，提供所有实现MetaData结构体的公共方法
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type MetaDataX struct {
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MetaData
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}
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func NewMetaDataX(metaData MetaData) *MetaDataX {
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return &MetaDataX{metaData}
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}
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func (md *MetaDataX) QuoteIdentifier(name string) string {
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return QuoteIdentifier(md, name)
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}
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func (md *MetaDataX) RemoveQuote(name string) string {
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return RemoveQuote(md, name)
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}
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// QuoteIdentifier quotes an "identifier" (e.g. a table or a column name) to be
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// used as part of an SQL statement. For example:
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//
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// tblname := "my_table"
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// data := "my_data"
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// quoted := quoteIdentifier(tblname, '"')
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// err := db.Exec(fmt.Sprintf("INSERT INTO %s VALUES ($1)", quoted), data)
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//
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// Any double quotes in name will be escaped. The quoted identifier will be
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// case sensitive when used in a query. If the input string contains a zero
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// byte, the result will be truncated immediately before it.
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func QuoteIdentifier(metadata MetaData, name string) string {
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quoter := metadata.GetIdentifierQuoteString()
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// 兼容mssql
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if quoter == "[" {
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return fmt.Sprintf("[%s]", name)
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}
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end := strings.IndexRune(name, 0)
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if end > -1 {
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name = name[:end]
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}
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return quoter + strings.Replace(name, quoter, quoter+quoter, -1) + quoter
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}
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func RemoveQuote(metadata MetaData, name string) string {
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quoter := metadata.GetIdentifierQuoteString()
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// 兼容mssql
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if quoter == "[" {
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return strings.Trim(name, "[]")
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}
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return strings.ReplaceAll(name, quoter, "")
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}
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