ConstantPool (Netty API Reference (4.2.0.Final))

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 java.lang.Object

A pool of Constants.

Constructor Summary

Constructors
Constructor Description

ConstantPool()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`boolean`	`exists(java.lang.String name)`	Returns `true` if a `AttributeKey` exists for the given `name`.
`protected abstract T`	`newConstant(int id, java.lang.String name)`
`T`	`newInstance(java.lang.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(java.lang.Class<?> firstNameComponent, java.lang.String secondNameComponent)`	Shortcut of `valueOf(firstNameComponent.getName() + "#" + secondNameComponent)`.
`T`	`valueOf(java.lang.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(java.lang.Class<?> firstNameComponent,
                 java.lang.String secondNameComponent)
```
    Shortcut of valueOf(firstNameComponent.getName() + "#" + secondNameComponent).
  - valueOf
```
public T valueOf(java.lang.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(java.lang.String name)
```
    Returns true if a AttributeKey exists for the given name.
  - newInstance
```
public T newInstance(java.lang.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,
                                 java.lang.String name)
```
  - nextId
```
@Deprecated
public final int nextId()
```
    Deprecated.