Package net.time4j.engine
Interface ChronoOperator<T>
- Type Parameters:
T- generic type of entities this operator can be applied to
- All Superinterfaces:
Function<T,T>,UnaryOperator<T>
- All Known Implementing Classes:
ElementOperator,Month,Quarter,StdOperator,Weekday
Applies a functional calculation on chronological entities and yields the result as changed copy.
Technical note: This interface is only suitable in an
Java-pre8-environment (that is Java 6 + 7) if the type T is constrained
to a final type. Otherwise the compiler will fail when compiling
expressions like entity.with(operator) due to limited support
of type inference. This constraint does not exist with Java 8 and later.
- Author:
- Meno Hochschild
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Method Summary
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Method Details
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apply
Adjusts given entity and yields a changed copy of argument.
Will be called by
ChronoEntity.with(ChronoOperator).- Specified by:
applyin interfaceFunction<T,T>- Parameters:
entity- chronological entity to be adjusted- Returns:
- adjusted copy of argument which itself remains unaffected
- Throws:
ChronoException- if there is no element rule for adjustingIllegalArgumentException- if any invalid value is triedArithmeticException- in case of numerical overflow
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