Enum Class StandardOperation

java.lang.Object

java.lang.Enum<StandardOperation>

jdk.dynalink.StandardOperation

All Implemented Interfaces:: Serializable, Comparable<StandardOperation>, Constable, Operation

public enum StandardOperation extends Enum<StandardOperation> implements Operation

Defines the standard dynamic operations. The operations GET and SET must be used as part of a NamespaceOperation. NamedOperation can then be further used on these NamespaceOperations to bind the name parameter of GET and SET operations, in which case it disappears from their type signature. NamedOperation can also be used to decorate CALL and NEW operations with a diagnostic name, and as such it does not affect their type signature.

Since:: 9

Nested Class Summary

Nested classes/interfaces declared in class Enum

Enum.EnumDesc<E>

Modifier and Type	Class	Description
`static final class`	`Enum.EnumDesc<E extends Enum<E>>`	A nominal descriptor for an `enum` constant.

Enum Constant Summary

Enum Constant	Description
`CALL`	Call a callable object.
`GET`	Get the value from a namespace defined on an object.
`NEW`	Call a constructor object.
`REMOVE`	Removes the value from a namespace defined on an object.
`SET`	Set the value in a namespace defined on an object.

Method Summary

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

Methods declared in class Enum

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

Modifier and Type	Method	Description
`protected final Object`	`clone()`	Throws CloneNotSupportedException.
`final int`	`compareTo(StandardOperation o)`	Compares this enum with the specified object for order.
`final Optional<Enum.EnumDesc<StandardOperation>>`	`describeConstable()`	Returns an enum descriptor `EnumDesc` for this instance, if one can be constructed, or an empty `Optional` if one cannot be.
`final boolean`	`equals(Object other)`	Returns true if the specified object is equal to this enum constant.
`protected final void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization has been deprecated for removal.
`final Class<StandardOperation>`	`getDeclaringClass()`	Returns the Class object corresponding to this enum constant's enum type.
`final int`	`hashCode()`	Returns a hash code for this enum constant.
`final String`	`name()`	Returns the name of this enum constant, exactly as declared in its enum declaration.
`final int`	`ordinal()`	Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero).
`String`	`toString()`	Returns the name of this enum constant, as contained in the declaration.
`static <T extends Enum<T>> T`	`valueOf(Class<T> enumClass, String name)`	Returns the enum constant of the specified enum class with the specified name.

Methods declared in class Object

getClass, notify, notifyAll, wait, wait, wait

Modifier and Type	Method	Description
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Methods declared in interface Operation

named, withNamespace, withNamespaces

Modifier and Type	Method	Description
`default NamedOperation`	`named(Object name)`	Returns a `NamedOperation` using this operation as its base.
`default NamespaceOperation`	`withNamespace(Namespace namespace)`	Returns a `NamespaceOperation` using this operation as its base.
`default NamespaceOperation`	`withNamespaces(Namespace... namespaces)`	Returns a `NamespaceOperation` using this operation as its base.

Enum Constant Details

GET

public static final StandardOperation GET

Get the value from a namespace defined on an object. Call sites with this operation should have a signature of (receiver, name)→value or (receiver)→value when used with NamedOperation, with all parameters and return type being of any type (either primitive or reference). This operation must always be used as part of a NamespaceOperation.

SET

public static final StandardOperation SET

Set the value in a namespace defined on an object. Call sites with this operation should have a signature of (receiver, name, value)→void or (receiver, value)→void when used with NamedOperation, with all parameters and return type being of any type (either primitive or reference). This operation must always be used as part of a NamespaceOperation.

REMOVE

public static final StandardOperation REMOVE

Removes the value from a namespace defined on an object. Call sites with this operation should have a signature of (receiver, name)→void or (receiver)→void when used with NamedOperation, with all parameters being of any type (either primitive or reference). This operation must always be used as part of a NamespaceOperation.

Since:: 10

CALL

public static final StandardOperation CALL

Call a callable object. Call sites with this operation should have a signature of (callable, receiver, arguments...)→value, with all parameters and return type being of any type (either primitive or reference). Typically, the callables are presumed to be methods of an object, so an explicit receiver value is always passed to the callable before the arguments. If a callable has no concept of a receiver, it is free to ignore the value of the receiver argument. The CALL operation is allowed to be used with a NamedOperation even though it does not take a name. Using it with a named operation won't affect its signature; the name is solely meant to be used as a diagnostic description for error messages.

NEW

public static final StandardOperation NEW

Call a constructor object. Call sites with this operation should have a signature of (constructor, arguments...)→value, with all parameters and return type being of any type (either primitive or reference). The NEW operation is allowed to be used with a NamedOperation even though it does not take a name. Using it with a named operation won't affect its signature; the name is solely meant to be used as a diagnostic description for error messages.

Method Details

values

public static StandardOperation[] 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 StandardOperation 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

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