io.netty.util

Class ConstantPool<T extends Constant<T>>

java.lang.Object

io.netty.util.ConstantPool<T>

Type Parameters:

T - the type of the constant

public abstract class ConstantPool<T extends Constant<T>>
extends Object

A pool of Constants.

Constructor Summary

Constructors

Constructor and Description
ConstantPool()

Method Summary

Modifier and Type	Method and Description
boolean	exists(String name) Returns true if a AttributeKey exists for the given name.
protected abstract T	newConstant(int id, String name)
T	newInstance(String name) Creates a new Constant for the given name or fail with an IllegalArgumentException if a Constant for the given name exists.
int	nextId() Deprecated.
T	valueOf(Class<?> firstNameComponent, String secondNameComponent) Shortcut of valueOf(firstNameComponent.getName() + "#" + secondNameComponent).
T	valueOf(String name) Returns the Constant which is assigned to the specified name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConstantPool

public ConstantPool()

Method Detail

valueOf

public T valueOf(Class<?> firstNameComponent,
                 String secondNameComponent)

Shortcut of valueOf(firstNameComponent.getName() + "#" + secondNameComponent).

valueOf

public T valueOf(String name)

Returns the Constant which is assigned to the specified name. If there's no such Constant, a new one will be created and returned. Once created, the subsequent calls with the same name will always return the previously created one (i.e. singleton.)

Parameters:

name - the name of the Constant

exists

public boolean exists(String name)

Returns true if a AttributeKey exists for the given name.

newInstance

public T newInstance(String name)

Creates a new Constant for the given name or fail with an IllegalArgumentException if a Constant for the given name exists.

newConstant

protected abstract T newConstant(int id,
                                 String name)

nextId

@Deprecated
public final int nextId()

Deprecated.