- java.lang.Object
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- java.lang.Enum<StandardOperation>
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- jdk.dynalink.StandardOperation
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- All Implemented Interfaces:
Serializable
,Comparable<StandardOperation>
,Operation
public enum StandardOperation extends Enum<StandardOperation> implements Operation
Defines the standard dynamic operations. The operationsGET
andSET
must be used as part of aNamespaceOperation
.NamedOperation
can then be further used on theseNamespaceOperation
s to bind the name parameter ofGET
andSET
operations, in which case it disappears from their type signature.NamedOperation
can also be used to decorateCALL
andNEW
operations with a diagnostic name, and as such it does not affect their type signature.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static StandardOperation
valueOf(String name)
Returns the enum constant of this type with the specified name.static StandardOperation[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.-
Methods declared in class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
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Methods declared in interface jdk.dynalink.Operation
named, withNamespace, withNamespaces
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Enum Constant Detail
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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 withNamedOperation
, with all parameters and return type being of any type (either primitive or reference). This operation must always be used as part of aNamespaceOperation
.
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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 withNamedOperation
, with all parameters and return type being of any type (either primitive or reference). This operation must always be used as part of aNamespaceOperation
.
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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 withNamedOperation
, with all parameters being of any type (either primitive or reference). This operation must always be used as part of aNamespaceOperation
.
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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. TheCALL
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.
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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). TheNEW
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.
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Method Detail
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values
public static StandardOperation[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:for (StandardOperation c : StandardOperation.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static StandardOperation valueOf(String name)
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
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is null
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