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AttributeCaster

Struct AttributeCaster 

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pub struct AttributeCaster;
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类型转换器

根据 CastType 将 Value 在数据库存储类型与 Rust 业务类型之间转换。

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impl AttributeCaster

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pub fn cast_read(value: Value, target: CastType) -> Value

从数据库读出时的类型转换(db → rust)

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pub fn cast_write(value: Value, target: CastType) -> Value

写入数据库时的类型转换(rust → db)

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