OpenJDK 27 · java.lang.classfile.ClassTransform · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
public static final ClassTransform	ACCEPT_ALL A class transform that passes all elements to the builder.

Method Summary

Modifier and Type	Method and Description
public default ClassTransform	andThen(ClassTransform t) Implements java.lang.classfile.ClassFileTransform.andThen. Chain this transform with another; elements presented to the builder of this transform will become the input to the next transform.
public static ClassTransform	Returns: the class transform dropping(Predicate<ClassElement> the predicate that determines which elements to drop filter) Creates a class transform that passes each element through to the builder, except for those that the supplied `Predicate` returns true for.
public static ClassTransform	Returns: the class transform endHandler(Consumer<ClassBuilder> the function to call when transformation is complete finisher) Creates a class transform that passes each element through to the builder, and calls the specified function when transformation is complete.
public static ClassTransform	Returns: the stateful class transform ofStateful(Supplier<ClassTransform> a `Supplier` that produces a fresh transform object for each traversal supplier) Creates a stateful class transform from a `Supplier`.
public static ClassTransform	Returns: the class transform transformingFields(FieldTransform the field transform xform) Creates a class transform that transforms `FieldModel` elements with the supplied field transform, passing other elements through to the builder.
public static ClassTransform	Returns: the class transform transformingMethodBodies(Predicate<MethodModel> a predicate that determines which methods to transform filter, CodeTransform the code transform xform) Creates a class transform that transforms the `CodeAttribute` (method body) of `MethodModel` elements with the supplied code transform for methods that the supplied `Predicate` returns true for, passing other elements through to the builder.
public static ClassTransform	Returns: the class transform transformingMethodBodies(CodeTransform the code transform xform) Creates a class transform that transforms the `CodeAttribute` (method body) of `MethodModel` elements with the supplied code transform, passing other elements through to the builder.
public static ClassTransform	Returns: the class transform transformingMethods(Predicate<MethodModel> a predicate that determines which methods to transform filter, MethodTransform the method transform xform) Creates a class transform that transforms `MethodModel` elements with the supplied method transform for methods that the supplied `Predicate` returns true for, passing other elements through to the builder.
public static ClassTransform	Returns: the class transform transformingMethods(MethodTransform the method transform xform) Creates a class transform that transforms `MethodModel` elements with the supplied method transform, passing other elements through to the builder.

Inherited from java.lang.classfile.ClassFileTransform:: accept atEnd atStart

ACCEPT_ALL	back to summary
public static final ClassTransform ACCEPT_ALL A class transform that passes all elements to the builder.

Method Detail

andThen	back to summary
public default ClassTransform andThen(ClassTransform t) Implements java.lang.classfile.ClassFileTransform.andThen. Doc from java.lang.classfile.ClassFileTransform.andThen. 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. Implementation Specification The default implementation returns this class transform chained with another class 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. Annotations @Override

andThen

back to summary

public default ClassTransform andThen(ClassTransform t)

Implements java.lang.classfile.ClassFileTransform.andThen.

Doc from java.lang.classfile.ClassFileTransform.andThen.

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.

Implementation Specification

The default implementation returns this class transform chained with another class 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.

Annotations

@Override

dropping back to summary

dropping	back to summary
public static ClassTransform dropping(Predicate<ClassElement> filter) Creates a class transform that passes each element through to the builder, except for those that the supplied `Predicate` returns true for. Parameters filter:Predicate<ClassElement> the predicate that determines which elements to drop Returns:ClassTransform the class transform

public static ClassTransform dropping(Predicate<ClassElement> filter)

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

Parameters

filter:Predicate<ClassElement>: the predicate that determines which elements to drop

Returns:ClassTransform

the class transform

endHandler	back to summary
public static ClassTransform endHandler(Consumer<ClassBuilder> finisher) Creates a class transform that passes each element through to the builder, and calls the specified function when transformation is complete. Parameters finisher:Consumer<ClassBuilder> the function to call when transformation is complete Returns:ClassTransform the class transform

endHandler

back to summary

public static ClassTransform endHandler(Consumer<ClassBuilder> finisher)

Creates a class transform that passes each element through to the builder, and calls the specified function when transformation is complete.

Parameters

finisher:Consumer<ClassBuilder>: the function to call when transformation is complete

Returns:ClassTransform

the class transform

ofStateful back to summary

ofStateful	back to summary
public static ClassTransform ofStateful(Supplier<ClassTransform> supplier) Creates a stateful class transform from a `Supplier`. The supplier will be invoked for each transformation. Parameters supplier:Supplier<ClassTransform> a `Supplier` that produces a fresh transform object for each traversal Returns:ClassTransform the stateful class transform

public static ClassTransform ofStateful(Supplier<ClassTransform> supplier)

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

Parameters

supplier:Supplier<ClassTransform>: a Supplier that produces a fresh transform object for each traversal

Returns:ClassTransform

the stateful class transform

transformingFields back to summary

transformingFields	back to summary
public static ClassTransform transformingFields(FieldTransform xform) Creates a class transform that transforms `FieldModel` elements with the supplied field transform, passing other elements through to the builder. Parameters xform:FieldTransform the field transform Returns:ClassTransform the class transform

public static ClassTransform transformingFields(FieldTransform xform)

Creates a class transform that transforms FieldModel elements with the supplied field transform, passing other elements through to the builder.

Parameters

xform:FieldTransform: the field transform

Returns:ClassTransform

the class transform

transformingMethodBodies back to summary

transformingMethodBodies	back to summary
public static ClassTransform transformingMethodBodies(Predicate<MethodModel> filter, CodeTransform xform) Creates a class transform that transforms the `CodeAttribute` (method body) of `MethodModel` elements with the supplied code transform for methods that the supplied `Predicate` returns true for, passing other elements through to the builder. Parameters filter:Predicate<MethodModel> a predicate that determines which methods to transform xform:CodeTransform the code transform Returns:ClassTransform the class transform

public static ClassTransform transformingMethodBodies(Predicate<MethodModel> filter, CodeTransform xform)

Creates a class transform that transforms the CodeAttribute (method body) of MethodModel elements with the supplied code transform for methods that the supplied Predicate returns true for, passing other elements through to the builder.

Parameters

filter:Predicate<MethodModel>: a predicate that determines which methods to transform
xform:CodeTransform: the code transform

Returns:ClassTransform

the class transform

transformingMethodBodies back to summary

transformingMethodBodies	back to summary
public static ClassTransform transformingMethodBodies(CodeTransform xform) Creates a class transform that transforms the `CodeAttribute` (method body) of `MethodModel` elements with the supplied code transform, passing other elements through to the builder. Parameters xform:CodeTransform the code transform Returns:ClassTransform the class transform

public static ClassTransform transformingMethodBodies(CodeTransform xform)

Creates a class transform that transforms the CodeAttribute (method body) of MethodModel elements with the supplied code transform, passing other elements through to the builder.

Parameters

xform:CodeTransform: the code transform

Returns:ClassTransform

the class transform

transformingMethods back to summary

transformingMethods	back to summary
public static ClassTransform transformingMethods(Predicate<MethodModel> filter, MethodTransform xform) Creates a class transform that transforms `MethodModel` elements with the supplied method transform for methods that the supplied `Predicate` returns true for, passing other elements through to the builder. Parameters filter:Predicate<MethodModel> a predicate that determines which methods to transform xform:MethodTransform the method transform Returns:ClassTransform the class transform

public static ClassTransform transformingMethods(Predicate<MethodModel> filter, MethodTransform xform)

Creates a class transform that transforms MethodModel elements with the supplied method transform for methods that the supplied Predicate returns true for, passing other elements through to the builder.

Parameters

filter:Predicate<MethodModel>: a predicate that determines which methods to transform
xform:MethodTransform: the method transform

Returns:ClassTransform

the class transform

transformingMethods back to summary

transformingMethods	back to summary
public static ClassTransform transformingMethods(MethodTransform xform) Creates a class transform that transforms `MethodModel` elements with the supplied method transform, passing other elements through to the builder. Parameters xform:MethodTransform the method transform Returns:ClassTransform the class transform

public static ClassTransform transformingMethods(MethodTransform xform)

Creates a class transform that transforms MethodModel elements with the supplied method transform, passing other elements through to the builder.

Parameters

xform:MethodTransform: the method transform

Returns:ClassTransform

the class transform

public non-sealed Interface ClassTransform

Field Summary

Method Summary

Field Detail

Method Detail