tauzaman.property
Class PropertyRepository

java.lang.Object
  |
  +--tauzaman.property.PropertyRepository

public class PropertyRepository

extends java.lang.Object

PropertyRepository class manages a pool of Properties. For example:

    PropertyRepository cr = new PropertyRepository();
    // null means load every single Property in the url
    cr.loadProperty(new URL("http://www.eecs.wsu.edu/~burgun/defaultProperties.xml"), null);
 

For now it does not have unloadProperty() behavior.

See Also:

Property

Status:

design complete, implementation complete

Field Summary

private static java.lang.String[]	propertyNames All currently avaliable Property names
private java.util.Hashtable	propertyRepository Hashtable, which has url and name of a Property as keys and their corresponding Property object as values.

Constructor Summary

PropertyRepository()
Constructs a PropertyRepository object.

Method Summary

boolean	isValidPropertyName(java.lang.String propertyName) Returns true if given property name is one of the valid names.
Property[]	loadProperty(java.net.URL url, java.lang.String[] names) Loads Property(ies) into this PropertyRepository and also returns them.
private java.util.Vector	loadPropertyInternal(java.net.URL url, java.lang.String[] names, boolean dflt) Loads Property(ies) into this PropertyRepository and also returns them.

Methods inherited from class java.lang.Object

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

Field Detail

propertyRepository

private java.util.Hashtable propertyRepository

Hashtable, which has url and name of a Property as keys and their corresponding Property object as values.

propertyNames

private static java.lang.String[] propertyNames

All currently avaliable Property names

Constructor Detail

PropertyRepository

public PropertyRepository()

Constructs a PropertyRepository object.

Method Detail

isValidPropertyName

public boolean isValidPropertyName(java.lang.String propertyName)

Returns true if given property name is one of the valid names. False otherwise.

Parameters:

propertyName - String name of the Property being checked

Returns:

boolean, which is true if given property name is valid false otherwise

loadProperty

public Property[] loadProperty(java.net.URL url,
                               java.lang.String[] names)
                        throws PropertyFormationException

Loads Property(ies) into this PropertyRepository and also returns them.

Parameters:

url - URL pointing to Property Specification file

names - String names of the Property(ies) that are wanted to be loaded

Returns:

an array of Property(ies) loaded

Throws:

PropertyFormationException - if any abnormal condition occurs when forming Property(ies)

loadPropertyInternal

private java.util.Vector loadPropertyInternal(java.net.URL url,
                                              java.lang.String[] names,
                                              boolean dflt)
                                       throws PropertyFormationException

Loads Property(ies) into this PropertyRepository and also returns them.

Parameters:

url - URL pointing to Property Specification file

names - String names of the Property(ies) that are wanted to be loaded

dflt - boolean representing the default behavior

Returns:

a dynamic array of Property(ies) loaded

Throws:

PropertyFormationException - if any abnormal condition occurs when forming Property(ies) (internal use only)