java.lang.Object
- org.springframework.core.SimpleAliasRegistry

All Implemented Interfaces:
AliasRegistry
Direct Known Subclasses:
DefaultSingletonBeanRegistry, SimpleBeanDefinitionRegistry
```
public class SimpleAliasRegistry
extends Object
implements AliasRegistry
```
Simple implementation of the AliasRegistry interface.
Serves as base class for BeanDefinitionRegistry implementations.
Since:
2.5.2
Author:
Juergen Hoeller, Qimiao Chen

Field Summary
Fields
Modifier and Type Field Description
protected Log logger
Logger available to subclasses.

Constructor Summary
Constructors
Constructor Description
SimpleAliasRegistry()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected boolean`	`allowAliasOverriding()`	Determine whether alias overriding is allowed.
`String`	`canonicalName(String name)`	Determine the raw name, resolving aliases to canonical names.
`protected void`	`checkForAliasCircle(String name, String alias)`	Check whether the given name points back to the given alias as an alias in the other direction already, catching a circular reference upfront and throwing a corresponding IllegalStateException.
`String[]`	`getAliases(String name)`	Return the aliases for the given name, if defined.
`boolean`	`hasAlias(String name, String alias)`	Determine whether the given name has the given alias registered.
`boolean`	`isAlias(String name)`	Determine whether the given name is defined as an alias (as opposed to the name of an actually registered component).
`void`	`registerAlias(String name, String alias)`	Given a name, register an alias for it.
`void`	`removeAlias(String alias)`	Remove the specified alias from this registry.
`void`	`resolveAliases(StringValueResolver valueResolver)`	Resolve all alias target names and aliases registered in this registry, applying the given `StringValueResolver` to them.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - logger
```
protected final Log logger
```
    Logger available to subclasses.
- Constructor Detail
  - SimpleAliasRegistry
```
public SimpleAliasRegistry()
```
- Method Detail
  - registerAlias
```
public void registerAlias(String name,
                          String alias)
```
    Description copied from interface: AliasRegistry
    Given a name, register an alias for it.
    Specified by:
    registerAlias in interface AliasRegistry
    Parameters:
    name - the canonical name
    alias - the alias to be registered
  - allowAliasOverriding
```
protected boolean allowAliasOverriding()
```
    Determine whether alias overriding is allowed.
    Default is true.
  - hasAlias
```
public boolean hasAlias(String name,
                        String alias)
```
    Determine whether the given name has the given alias registered.
    Parameters:
    name - the name to check
    alias - the alias to look for
    Since:
    4.2.1
  - removeAlias
```
public void removeAlias(String alias)
```
    Description copied from interface: AliasRegistry
    Remove the specified alias from this registry.
    Specified by:
    removeAlias in interface AliasRegistry
    Parameters:
    alias - the alias to remove
  - isAlias
```
public boolean isAlias(String name)
```
    Description copied from interface: AliasRegistry
    Determine whether the given name is defined as an alias (as opposed to the name of an actually registered component).
    Specified by:
    isAlias in interface AliasRegistry
    Parameters:
    name - the name to check
    Returns:
    whether the given name is an alias
  - getAliases
```
public String[] getAliases(String name)
```
    Description copied from interface: AliasRegistry
    Return the aliases for the given name, if defined.
    Specified by:
    getAliases in interface AliasRegistry
    Parameters:
    name - the name to check for aliases
    Returns:
    the aliases, or an empty array if none
  - resolveAliases
```
public void resolveAliases(StringValueResolver valueResolver)
```
    Resolve all alias target names and aliases registered in this registry, applying the given StringValueResolver to them.
    The value resolver may for example resolve placeholders in target bean names and even in alias names.
    Parameters:
    valueResolver - the StringValueResolver to apply
  - checkForAliasCircle
```
protected void checkForAliasCircle(String name,
                                   String alias)
```
    Check whether the given name points back to the given alias as an alias in the other direction already, catching a circular reference upfront and throwing a corresponding IllegalStateException.
    Parameters:
    name - the candidate name
    alias - the candidate alias
    See Also:
    registerAlias(java.lang.String, java.lang.String), hasAlias(java.lang.String, java.lang.String)
  - canonicalName
```
public String canonicalName(String name)
```
    Determine the raw name, resolving aliases to canonical names.
    Parameters:
    name - the user-specified name
    Returns:
    the transformed name

Class SimpleAliasRegistry

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

SimpleAliasRegistry

Method Detail

registerAlias

allowAliasOverriding

hasAlias

removeAlias

isAlias

getAliases

resolveAliases

checkForAliasCircle

canonicalName