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Interface FieldTransform

All Superinterfaces:: ClassFileTransform<FieldTransform, FieldElement, FieldBuilder>

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 FieldTransform extends ClassFileTransform<FieldTransform, FieldElement, FieldBuilder>

A transformation on streams of FieldElement.

Refer to ClassFileTransform for general guidance and caution around the use of transforms for structures in the class file format.

A field transform can be lifted to a class transform via ClassTransform.transformingFields(FieldTransform), transforming only the FieldModel among the class members and passing all other elements to the builders.

Since:

See Also:

Field Summary

Modifier and Type	Field	Description
`static final FieldTransform`	`ACCEPT_ALL`	A field transform that passes all elements to the builder.

Method Summary

Modifier and Type	Method	Description
`default FieldTransform`	`andThen(FieldTransform t)`	Chain this transform with another; elements presented to the builder of this transform will become the input to the next transform.
`static FieldTransform`	`dropping(Predicate<FieldElement> filter)`	Creates a field transform that passes each element through to the builder, except for those that the supplied `Predicate` is true for.
`static FieldTransform`	`endHandler(Consumer<FieldBuilder> finisher)`	Creates a field transform that passes each element through to the builder, and calls the specified function when transformation is complete.
`static FieldTransform`	`ofStateful(Supplier<FieldTransform> supplier)`	Creates a stateful field transform from a `Supplier`.

Methods declared in interface ClassFileTransform

accept, atEnd, atStart

Field Details

ACCEPT_ALL

static final FieldTransform ACCEPT_ALL

A field transform that passes all elements to the builder.

Method Details

ofStateful

static FieldTransform ofStateful(Supplier<FieldTransform> supplier)

Creates a stateful field transform from a Supplier. The supplier will be invoked for each transformation.

Parameters:: supplier - a Supplier that produces a fresh transform object for each traversal
Returns:: the stateful field transform

endHandler

static FieldTransform endHandler(Consumer<FieldBuilder> finisher)

Creates a field 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 field transform

dropping

static FieldTransform dropping(Predicate<FieldElement> filter)

Creates a field transform that passes each element through to the builder, except for those that the supplied Predicate is true for.

Parameters:: filter - the predicate that determines which elements to drop
Returns:: the field transform

andThen

default FieldTransform andThen(FieldTransform t)

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.

This method is implemented by the Class-File API. Users usually don't have sufficient access to Class-File API functionalities to override this method correctly for generic downstream transforms.

Specified by:: andThen in interface ClassFileTransform<FieldTransform, FieldElement, FieldBuilder>
Implementation Requirements:: The default implementation returns this field transform chained with another field 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

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/classfile/FieldTransform.html