com.compoze.util
Class MutableProperties

java.lang.Object
  java.util.Dictionary<K,V>
      java.util.Hashtable<java.lang.Object,java.lang.Object>
          java.util.Properties
              com.compoze.util.ObjectProperties
                  com.compoze.util.MutableProperties

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.Object,java.lang.Object>

Direct Known Subclasses:

FileProperties, ResourceProperties

public class MutableProperties
extends ObjectProperties
implements java.io.Serializable

This class provides a properties object that can change the response for its values based on a named configuration. An example listing of properties is as follows:

 # default property
 link.yahoo = http://www.yahoo.com/

 # property used for named configuration "europe"
 europe-link.yahoo = http://www.europe.yahoo.com/
 

So, for example, the value for link.yahoo in the named configuration europe would be http://www.europe.yahoo.com/. In the named configuration asia the value would default to http://www.yahoo.com/. Named configurations are listed in order of precedence.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

MutableProperties()
Constructor.

MutableProperties(java.util.LinkedList configuration)
Constructor.

MutableProperties(java.util.Properties defaults)
Constructor.

MutableProperties(java.util.Properties defaults, java.util.LinkedList configuration)
Constructor.

Method Summary

java.lang.String	getProperty(java.lang.String sKey) Get a property.
java.lang.String	getProperty(java.lang.String sKey, java.lang.String sDefault) Get a property.
java.util.Enumeration	propertyNames() This method overrides the same method in java.util.Properties, and returns property names without their mutable property prefixes.
void	setConfiguration(java.util.LinkedList configuration) Set the current configuration.

Methods inherited from class com.compoze.util.ObjectProperties

getBoolean, getBoolean, getByte, getByte, getDouble, getDouble, getFloat, getFloat, getInt, getInt, getLong, getLong, getShort, getShort, getString, getString, getStringArray, getStringArray, getStringArray, replaceSubstitutions

Methods inherited from class java.util.Properties

list, list, load, loadFromXML, save, setProperty, store, storeToXML, storeToXML

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, keySet, put, putAll, rehash, remove, size, toString, values

Methods inherited from class java.lang.Object

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

Constructor Detail

MutableProperties

public MutableProperties()

Constructor.

MutableProperties

public MutableProperties(java.util.Properties defaults)

Constructor.

Parameters:

defaults - default properties

MutableProperties

public MutableProperties(java.util.LinkedList configuration)

Constructor.

Parameters:

configuration - the list of configurations to set (in order of precedence)

MutableProperties

public MutableProperties(java.util.Properties defaults,
                         java.util.LinkedList configuration)

Constructor.

Parameters:

defaults - default properties

configuration - the list of configurations to set (in order of precedence)

Method Detail

propertyNames

public java.util.Enumeration propertyNames()

This method overrides the same method in java.util.Properties, and returns property names without their mutable property prefixes.

Overrides:

propertyNames in class java.util.Properties

Returns:

the enumeration of property names without their mutable property prefixes

setConfiguration

public void setConfiguration(java.util.LinkedList configuration)

Set the current configuration.

Parameters:

configuration - the list of configurations to set (in order of precedence)

getProperty

public java.lang.String getProperty(java.lang.String sKey)

Get a property. If a configuration is set and a value for that configuration is available then that is returned, otherwise the default value is returned.

Overrides:

getProperty in class ObjectProperties

Parameters:

sKey - the key of the property

Returns:

the value

getProperty

public java.lang.String getProperty(java.lang.String sKey,
                                    java.lang.String sDefault)

Get a property. If a configuration is set and a value for that configuration is available then that is returned, otherwise the default value is returned.

Overrides:

getProperty in class ObjectProperties

Parameters:

sKey - the key of the property

sDefault - the default to return if a value for the configuration is not found

Returns:

the value