sirius.kernel.di.transformers

Interface Transformer<S,T>

Type Parameters:

S - the source type which is supported as input of the transformation

T - the target type which is supported as output of the transformation

All Superinterfaces:

Priorized

public interface Transformer<S,T>
extends Priorized

Transforms a Transformable into a given target type.

Used by Transformers to transform a certain type into another one. This permits to transform existing classes into interfaces or other classes without modifying them.

Field Summary

Fields inherited from interface sirius.kernel.di.std.Priorized

DEFAULT_PRIORITY

Method Summary

Modifier and Type	Method and Description
default int	getPriority() As multiple adapters for the same pair of types might be present, the priority is used to specify precedence.
Class<S>	getSourceClass() Returns the source type for which this factory can perform transformations.
Class<T>	getTargetClass() Returns the target type for which this factory can perform transformations.
T	make(S source) Generates a new object of the desired target type for the given object to transform.

Method Detail

getPriority

default int getPriority()

As multiple adapters for the same pair of types might be present, the priority is used to specify precedence.

Specified by:

getPriority in interface Priorized

Returns:

the priority (lower is better) of this transformer

getSourceClass

Class<S> getSourceClass()

Returns the source type for which this factory can perform transformations.

Returns:

the source type for which transformations are supported.

getTargetClass

Class<T> getTargetClass()

Returns the target type for which this factory can perform transformations.

Returns:

the target type for which transformations are supported.

make

@Nullable
T make(@Nonnull
                 S source)

Generates a new object of the desired target type for the given object to transform.

Parameters:

source - the object to transform

Returns:

the transformed instance (matching the target class) or null to indicate that no conversion was possible.