- All Superinterfaces:
ClassFileTransformPREVIEW<MethodTransformPREVIEW,
MethodElementPREVIEW, MethodBuilderPREVIEW>
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface
public non-sealed interface MethodTransform
extends ClassFileTransformPREVIEW<MethodTransformPREVIEW,MethodElementPREVIEW,MethodBuilderPREVIEW>
MethodTransform
is a preview API of the Java platform.
Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.
A transformation on streams of
MethodElement
PREVIEW.- Since:
- 22
- See Also:
-
Nested Class Summary
Nested classes/interfaces declared in interface java.lang.classfile.ClassFileTransformPREVIEW
ClassFileTransform.ResolvedTransformPREVIEW<E extends ClassFileElementPREVIEW>
-
Field Summary
Modifier and TypeFieldDescriptionstatic final MethodTransformPREVIEW
A method transform that sends all elements to the builder. -
Method Summary
Modifier and TypeMethodDescriptiondefault MethodTransformPREVIEW
Chain this transform with another; elements presented to the builder of this transform will become the input to the next transform.static MethodTransformPREVIEW
dropping
(Predicate<MethodElementPREVIEW> filter) Create a method transform that passes each element through to the builder, except for those that the suppliedPredicate
is true for.static MethodTransformPREVIEW
endHandler
(Consumer<MethodBuilderPREVIEW> finisher) Create a method transform that passes each element through to the builder, and calls the specified function when transformation is complete.static MethodTransformPREVIEW
ofStateful
(Supplier<MethodTransformPREVIEW> supplier) Create a stateful method transform from aSupplier
.resolve
(MethodBuilderPREVIEW builder) Bind a transform to a builder.static MethodTransformPREVIEW
Methods declared in interface java.lang.classfile.ClassFileTransformPREVIEW
accept, atEnd, atStart
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Field Details
-
ACCEPT_ALL
A method transform that sends all elements to the builder.
-
-
Method Details
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ofStateful
-
endHandler
Create a method transform that passes each element through to the builder, and calls the specified function when transformation is complete.- Parameters:
finisher
- the function to call when transformation is complete- Returns:
- the method transform
-
dropping
Create a method transform that passes each element through to the builder, except for those that the suppliedPredicate
is true for.- Parameters:
filter
- the predicate that determines which elements to drop- Returns:
- the method transform
-
transformingCode
-
resolve
default ClassFileTransform.ResolvedTransformPREVIEW<MethodElementPREVIEW> resolve(MethodBuilderPREVIEW builder) Description copied from interface:ClassFileTransform
Bind a transform to a builder. If the transform is chained, intermediate builders are created for each chain link. If the transform is stateful (see, e.g.,ClassTransform.ofStateful(Supplier)
PREVIEW), the supplier is invoked to get a fresh transform object.This method is a low-level method that should rarely be used by user code; most of the time, user code should prefer
ClassFileBuilder.transform(CompoundElement, ClassFileTransform)
PREVIEW, which resolves the transform and executes it on the current builder.- Specified by:
resolve
in interfaceClassFileTransformPREVIEW<MethodTransformPREVIEW,
MethodElementPREVIEW, MethodBuilderPREVIEW> - Implementation Requirements:
- The default implementation returns a resolved transform bound to the given method builder.
- Parameters:
builder
- the builder to bind to- Returns:
- the bound result
-
andThen
Description copied from interface:ClassFileTransform
Chain this transform with another; elements presented to the builder of this transform will become the input to the next transform.- Specified by:
andThen
in interfaceClassFileTransformPREVIEW<MethodTransformPREVIEW,
MethodElementPREVIEW, MethodBuilderPREVIEW> - Implementation Requirements:
- The default implementation returns this method transform chained with another method transform from the argument. Chaining of two transforms requires to involve a chained builder serving as a target builder for this transform and also as a source of elements for the downstream transform.
- Parameters:
t
- the downstream transform- Returns:
- the chained transform
-
MethodTransform
when preview features are enabled.