Package org.apache.tapestry5.ioc.util

Class IdAllocator

java.lang.Object

org.apache.tapestry5.ioc.util.IdAllocator

public final class IdAllocator
extends Object

Used to "uniquify" names within a given context. A base name is passed in, and the return value is the base name, or the base name extended with a suffix to make it unique. This class is not threadsafe.

Constructor Summary

Constructors

Constructor	Description
IdAllocator()	Creates a new allocator with no namespace.
IdAllocator(String namespace)	Creates a new allocator with the provided namespace.

Method Summary

Modifier and Type	Method	Description
String	allocateId(String name)	Allocates the id.
void	clear()	Clears the allocator, resetting it to freshly allocated state.
IdAllocator	clone()	Creates a clone of this IdAllocator instance, copying the allocator's namespace and key map.
List<String>	getAllocatedIds()	Returns a list of all allocated ids, sorted alphabetically.
boolean	isAllocated(String name)	Checks to see if a given name has been allocated.

Methods inherited from class java.lang.Object

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

Constructor Detail

IdAllocator

public IdAllocator()

Creates a new allocator with no namespace.

IdAllocator

public IdAllocator(String namespace)

Creates a new allocator with the provided namespace.

Method Detail

getAllocatedIds

public List<String> getAllocatedIds()

Returns a list of all allocated ids, sorted alphabetically.

clone

public IdAllocator clone()

Creates a clone of this IdAllocator instance, copying the allocator's namespace and key map.

Overrides:

clone in class Object

allocateId

public String allocateId(String name)

Allocates the id. Repeated calls for the same name will return "name", "name_0", "name_1", etc.

isAllocated

public boolean isAllocated(String name)

Checks to see if a given name has been allocated.

clear

public void clear()

Clears the allocator, resetting it to freshly allocated state.