StandardOperation (Java SE 15 & JDK 15) (original) (raw)

All Implemented Interfaces:

[Serializable](../../../java.base/java/io/Serializable.html "interface in java.io"), [Comparable](../../../java.base/java/lang/Comparable.html "interface in java.lang")<[StandardOperation](StandardOperation.html "enum in jdk.dynalink")>, [Constable](../../../java.base/java/lang/constant/Constable.html "interface in java.lang.constant"), [Operation](Operation.html "interface in jdk.dynalink")

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 theseNamespaceOperations 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.

• Nested Class Summary

• Enum Constant Summary

Enum Constants

• Method Summary

Methods declared in class java.lang.Enum

[clone](../../../java.base/java/lang/Enum.html#clone%28%29), [compareTo](../../../java.base/java/lang/Enum.html#compareTo%28E%29), [describeConstable](../../../java.base/java/lang/Enum.html#describeConstable%28%29), [equals](../../../java.base/java/lang/Enum.html#equals%28java.lang.Object%29), [finalize](../../../java.base/java/lang/Enum.html#finalize%28%29), [getDeclaringClass](../../../java.base/java/lang/Enum.html#getDeclaringClass%28%29), [hashCode](../../../java.base/java/lang/Enum.html#hashCode%28%29), [name](../../../java.base/java/lang/Enum.html#name%28%29), [ordinal](../../../java.base/java/lang/Enum.html#ordinal%28%29), [toString](../../../java.base/java/lang/Enum.html#toString%28%29), [valueOf](../../../java.base/java/lang/Enum.html#valueOf%28java.lang.Class,java.lang.String%29)

• Enum Constant Details

  • 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

  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

  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.

  • 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 aNamedOperation 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

  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 aNamedOperation 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

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

  • valueOf

  Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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](../../../java.base/java/lang/IllegalArgumentException.html "class in java.lang") - if this enum type has no constant with the specified name
  [NullPointerException](../../../java.base/java/lang/NullPointerException.html "class in java.lang") - if the argument is null