PropertyGroup (JBoss/Common API) - JBoss 4.0.1 sp1 common API Documentation 英文版文档

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org.jboss.util.property
Class PropertyGroup

java.lang.Object
  java.util.Dictionary
      java.util.Hashtable
          java.util.Properties
              org.jboss.util.property.PropertyMap
                  org.jboss.util.property.PropertyGroup

All Implemented Interfaces:: Cloneable, Map, Serializable

public class PropertyGroup
extends PropertyMap

This is a helper class to access a group of properties with out having to refer to their full names.

This class needs more work to be fully functional. It should suffice for adding property listeners and getting/setting property values, but other activies might not work out so well.

Version:: $Revision: 1.4 $
Author:: Jason Dillon
See Also:: Serialized Form

Field Summary

protected String basename
          Base property name

Fields inherited from class org.jboss.util.property.PropertyMap

boundListeners, EMPTY_ARRAY_PROPERTY, PROPERTY_NAME_SEPARATOR, unboundListeners

Fields inherited from class java.util.Properties

defaults

Constructor Summary

PropertyGroup(String basename, Properties container)
          Construct a PropertyGroup.

Method Summary

protected void addPropertyListener(BoundPropertyListener listener)
          Add a bound property listener.

boolean containsKey(Object name)
          Check if this PropertyMap contains a given property name.

Set entrySet()
          Returns an entry set for all properties in this group.

Object get(Object name)
          Get a property

String getBaseName()
          Get the base property name for this group.

Object put(Object name, Object value)
          Set a property.

Object remove(Object name)
          Remove a property.

protected boolean removePropertyListener(BoundPropertyListener listener)
          Remove a bound property listener.

Methods inherited from class org.jboss.util.property.PropertyMap

addPropertyListener, addPropertyListeners, containsProperty, entrySet, firePropertyAdded, firePropertyChanged, firePropertyRemoved, getArrayProperty, getArrayProperty, getProperty, getPropertyGroup, getPropertyGroup, keySet, load, load, load, load, makeIndexPropertyName, makePrefixedPropertyName, names, removeProperty, removePropertyListener, setProperty

Methods inherited from class java.util.Properties

getProperty, list, list, load, propertyNames, save, store

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsValue, elements, equals, hashCode, isEmpty, keys, keySet, putAll, rehash, size, toString, values

Methods inherited from class java.lang.Object

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

Field Detail

basename

protected final String basename

Base property name

Constructor Detail

PropertyGroup

public PropertyGroup(String basename,
                     Properties container)

Construct a PropertyGroup.
Parameters:: basename - Base property name.; container - Property container.
Throws:: NullArgumentException - Basename is null.

Method Detail

getBaseName

public final String getBaseName()

Get the base property name for this group.

Returns:: Base property name.

containsKey

public boolean containsKey(Object name)

Check if this PropertyMap contains a given property name.

Parameters:: name - Property name.
Returns:: True if property map or defaults contains key.

put

public Object put(Object name,
                  Object value)

Set a property.

Specified by:: put in interface Map
Overrides:: put in class PropertyMap

Parameters:: name - Property name.; value - Property value.
Returns:: Previous property value or null.

get

public Object get(Object name)

Get a property

Parameters:: name - Property name.
Returns:: Property value or null.

remove

public Object remove(Object name)

Remove a property.

Specified by:: remove in interface Map
Overrides:: remove in class PropertyMap

Parameters:: name - Property name.
Returns:: Removed property value.

entrySet

public Set entrySet()

Returns an entry set for all properties in this group.

This is currently ver inefficient, but should get the job done for now.

addPropertyListener

protected void addPropertyListener(BoundPropertyListener listener)

Add a bound property listener.

Generates a fully qualified property name and adds the listener under that name.

Overrides:: addPropertyListener in class PropertyMap

Parameters:: listener - Bound property listener to add.

removePropertyListener

protected boolean removePropertyListener(BoundPropertyListener listener)

Remove a bound property listener.

Generates a fully qualified property name and removes the listener under that name.

Overrides:: removePropertyListener in class PropertyMap

Parameters:: listener - Bound property listener to remove.
Returns:: True if listener was removed.