Enum Class ClassFile.AttributesProcessingOption

java.lang.Object

java.lang.Enum<ClassFile.AttributesProcessingOption>

java.lang.classfile.ClassFile.AttributesProcessingOption

All Implemented Interfaces:

Serializable, ClassFile.Option, Comparable<ClassFile.AttributesProcessingOption>, Constable

Enclosing interface:

ClassFile

public static enum ClassFile.AttributesProcessingOption
extends Enum<ClassFile.AttributesProcessingOption>
implements ClassFile.Option

The option describing whether to retain or discard attributes that cannot verify their correctness after a transformation. The default is PASS_ALL_ATTRIBUTES to retain all attributes as-is.

Many attributes only depend on data managed by the Class-File API, such as constant pool entries or labels into the code array. If they change, the Class-File API knows their updated values and can write a correct version by expanding the structures and recomputing the updated indexes, known as "explosion". However, some attributes, such as type annotations, depend on arbitrary data that may be modified during transformations but the Class-File API does not track, such as index to an entry in the interfaces of a ClassFile structure. As a result, the Class-File API cannot verify the correctness of such information.

Since:

24

See Also:

• AttributeMapper.AttributeStability

Nested Class Summary

Nested classes/interfaces declared in class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
DROP_UNKNOWN_ATTRIBUTES	Drop attributes with AttributeMapper.AttributeStability.UNKNOWN data dependency during transformation.
DROP_UNSTABLE_ATTRIBUTES	Drop attributes with AttributeMapper.AttributeStability.UNSTABLE or higher data dependency during transformation.
PASS_ALL_ATTRIBUTES	Retain all original attributes during transformation.

Method Summary

Modifier and Type	Method	Description
static ClassFile.AttributesProcessingOption	valueOf(String name)	Returns the enum constant of this class with the specified name.
static ClassFile.AttributesProcessingOption[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods declared in class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

PASS_ALL_ATTRIBUTES

public static final ClassFile.AttributesProcessingOption PASS_ALL_ATTRIBUTES

Retain all original attributes during transformation.

DROP_UNKNOWN_ATTRIBUTES

public static final ClassFile.AttributesProcessingOption DROP_UNKNOWN_ATTRIBUTES

Drop attributes with AttributeMapper.AttributeStability.UNKNOWN data dependency during transformation.

DROP_UNSTABLE_ATTRIBUTES

public static final ClassFile.AttributesProcessingOption DROP_UNSTABLE_ATTRIBUTES

Drop attributes with AttributeMapper.AttributeStability.UNSTABLE or higher data dependency during transformation.

Method Details

values

public static ClassFile.AttributesProcessingOption[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static ClassFile.AttributesProcessingOption valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null