Module com.speedment.runtime.compute

Package com.speedment.runtime.compute.trait

Interface HasCompose<T>

All Known Subinterfaces:

JoiningExpression<T>, ToBigDecimal<T>, ToBigDecimalNullable<T>, ToBigDecimalOrElse<T>, ToBigDecimalOrElseGet<T>, ToBigDecimalOrThrow<T>, ToBoolean<T>, ToBooleanNullable<T>, ToBooleanOrElse<T>, ToBooleanOrElseGet<T>, ToBooleanOrThrow<T>, ToByte<T>, ToByteNullable<T>, ToByteOrElse<T>, ToByteOrElseGet<T>, ToByteOrThrow<T>, ToChar<T>, ToCharNullable<T>, ToCharOrElse<T>, ToCharOrElseGet<T>, ToCharOrThrow<T>, ToDouble<T>, ToDoubleNullable<T>, ToDoubleOrElse<T>, ToDoubleOrElseGet<T>, ToDoubleOrThrow<T>, ToEnum<T,E>, ToEnumNullable<T,E>, ToEnumOrElse<T,E>, ToEnumOrElseGet<T,E>, ToEnumOrThrow<T,E>, ToFloat<T>, ToFloatNullable<T>, ToFloatOrElse<T>, ToFloatOrElseGet<T>, ToFloatOrThrow<T>, ToInt<T>, ToIntNullable<T>, ToIntOrElse<T>, ToIntOrElseGet<T>, ToIntOrThrow<T>, ToLong<T>, ToLongNullable<T>, ToLongOrElse<T>, ToLongOrElseGet<T>, ToLongOrThrow<T>, ToShort<T>, ToShortNullable<T>, ToShortOrElse<T>, ToShortOrElseGet<T>, ToShortOrThrow<T>, ToString<T>, ToStringNullable<T>, ToStringOrElse<T>, ToStringOrElseGet<T>, ToStringOrThrow<T>

public interface HasCompose<T>

Trait for expressions that has a compose(Function) method similar to Function.compose(Function), but even primitive expressions might implement this trait.

Since:

1.2.0

Author:

Emil Forslund

Method Summary

Modifier and Type	Method	Description
<V> Expression<V>	compose(Function<? super V,? extends T> before)	Returns a composed expression that first applies the before function to its input, and then applies this function to the result.

Method Detail

compose

<V> Expression<V> compose(Function<? super V,? extends T> before)

Returns a composed expression that first applies the before function 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 the before function, and to the composed expression

Parameters:

before - the function to apply before this function is applied

Returns:

a composed function that first applies the before function and then applies this function

Throws:

NullPointerException - if before is null