uk.ac.ed.epcc.safe.accounting.properties

Class PropertyRegistry

java.lang.Object

uk.ac.ed.epcc.safe.accounting.properties.FixedPropertyFinder

uk.ac.ed.epcc.safe.accounting.properties.PropertyRegistry

All Implemented Interfaces:

PropertyFinder

Direct Known Subclasses:

ConfigPropertyRegistry, ReferencePropertyRegistry

public class PropertyRegistry
extends FixedPropertyFinder

Defines a set of related PropertyTag objects in a single name-space A PropertyRegistry allows enumeration over the set of available properties. It also implements PropertyFinder so String names can be parsed to PropertyTags. Where the set of properties are fixed at compile time the PropertyRegistry and the PropertyTags it contains can be declared as static constants. If a PropertyRegistry has to be created at run-time then it should be populated fully as soon as possible so the set of available Properties remains consistent over time.

Unfortunately It is possible to create multiple PropertyRegistry instances with the same name. For example where there are multiple accounting tables each of which have generated a set of dynamic properties using the same policy but the contents being dependent on the configuration of the accounting table. This should be avoided because PropertyRegistry objects with the same name count as being equal so problems will arise if these tables are then combined into a composite UsageProducer.

Author:

spb

Field Summary

Fields inherited from class uk.ac.ed.epcc.safe.accounting.properties.FixedPropertyFinder

name, PROPERTY_FINDER_NAME_REGEXP, PROPERTY_FINDER_PREFIX_REGEXP, PROPERTY_FINDER_SEPERATOR, registry

Constructor Summary

Constructors

Constructor and Description
PropertyRegistry(java.lang.String name, java.lang.String description)

Method Summary

Methods

Modifier and Type	Method and Description
PropertyFinder	copy() return a new PropertyFinder that represents a copy of the current state of this object.
void	lock() prevent further modifications to this regismenttry For a statically allocated PropertyREgistry this can be invoked in as assign

Methods inherited from class uk.ac.ed.epcc.safe.accounting.properties.FixedPropertyFinder

equals, find, find, find, getDescription, getPrefix, getProperties, getProperties, hashCode, hasProperty, make, size, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PropertyRegistry

public PropertyRegistry(java.lang.String name,
                java.lang.String description)

Method Detail

copy

public PropertyFinder copy()

Description copied from interface: PropertyFinder

return a new PropertyFinder that represents a copy of the current state of this object.

Specified by:

copy in interface PropertyFinder

Overrides:

copy in class FixedPropertyFinder

Returns:

PropertyFinder

lock

public void lock()

prevent further modifications to this regismenttry For a statically allocated PropertyREgistry this can be invoked in as assign