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                ### 名稱映射規則 名稱映射規則主要負責結構體名稱到表名和結構體field到表字段的名稱映射。由core.IMapper接口的實現者來管理,xorm內置了三種IMapper實現:`core.SnakeMapper` , `core.SameMapper`和`core.GonicMapper`。SnakeMapper支持struct為駝峰式命名,表結構為下劃線命名之間的轉換;SameMapper支持結構體名稱和對應的表名稱以及結構體field名稱與對應的表字段名稱相同的命名。 當前SnakeMapper為默認值,如果需要改變時,在engine創建完成后使用 ~~~ engine.SetMapper(core.SameMapper{}) ~~~ 同時需要注意的是: - 如果你使用了別的命名規則映射方案,也可以自己實現一個IMapper。 - 表名稱和字段名稱的映射規則默認是相同的,當然也可以設置為不同,如: ~~~ engine.SetTableMapper(core.SameMapper{}) engine.SetColumnMapper(core.SnakeMapper{}) ~~~ When a struct auto mapping to a database's table, the below table describes how they change to each other: | go type's kind | value method | xorm type | |-----|-----|-----| | implemented Conversion | Conversion.ToDB / Conversion.FromDB | Text | | int, int8, int16, int32, uint, uint8, uint16, uint32 | | Int | | int64, uint64 | | BigInt | | float32 | | Float | | float64 | | Double | | complex64, complex128 | json.Marshal / json.UnMarshal | Varchar(64) | | []uint8 | | Blob | | array, slice, map except []uint8 | json.Marshal / json.UnMarshal | Text | | bool | 1 or 0 | Bool | | string | | Varchar(255) | | time.Time | | DateTime | | cascade struct | primary key field value | BigInt | | | struct | json.Marshal / json.UnMarshal | Text | | Others | | Text |
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