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

IdAllocator()
Creates a new allocator with no namespace.

IdAllocator(String namespace)
Creates a new allocator with the provided namespace.

Method Summary

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.