Enum Class JournalOp
- All Implemented Interfaces:
Serializable, Comparable<JournalOp>, Constable
檔案交易日誌的操作類型
對應 FileStorage 的三個會改變永久區的操作。
讀取類操作不入日誌。
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Nested Class Summary
Nested classes/interfaces inherited from class Enum
Enum.EnumDesc<E> -
Enum Constant Summary
Enum Constants -
Method Summary
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Enum Constant Details
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PERSIST
將暫存檔案持久化到永久區(FileStorage.persist) -
STORE
直接寫入永久區,跳過暫存(FileStorage.store) -
DELETE
刪除永久區檔案(FileStorage.delete)
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException- if this enum class has no constant with the specified nameNullPointerException- if the argument is null
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