Interface IOFunction<T,R>
- Type Parameters:
T- Type of inputR- Type of output
- All Known Implementing Classes:
SftpFileSystemProvider.SessionProvider
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
Invokes some I/O function on the input returning some output and potentially throwing an
IOException in the
process-
Method Summary
Modifier and TypeMethodDescriptiondefault <V> IOFunction<T, V> andThen(IOFunction<? super R, ? extends V> after) Returns a composed function that first applies this function to its input, and then applies theafterfunction to the result.default <V> IOFunction<V, R> compose(IOFunction<? super V, ? extends T> before) Returns a composed function that first applies thebeforefunction to its input, and then applies this function to the result.static <T> IOFunction<T, T> identity()Returns a function that always returns its input argument.
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Method Details
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apply
- Throws:
IOException
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compose
Returns a composed function that first applies thebeforefunction to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.- Type Parameters:
V- the type of input to thebeforefunction, and to the composed function- Parameters:
before- the function to apply before this function is applied- Returns:
- a composed function that first applies the
beforefunction and then applies this function - Throws:
NullPointerException- if before is null- See Also:
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andThen
Returns a composed function that first applies this function to its input, and then applies theafterfunction to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.- Type Parameters:
V- the type of output of theafterfunction, and of the composed function- Parameters:
after- the function to apply after this function is applied- Returns:
- a composed function that first applies this function and then applies the
afterfunction - Throws:
NullPointerException- if after is null- See Also:
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identity
Returns a function that always returns its input argument.- Type Parameters:
T- the type of the input and output objects to the function- Returns:
- a function that always returns its input argument
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