net.sf.jguiraffe.di.impl.providers

Class PropertiesBeanProvider

java.lang.Object

net.sf.jguiraffe.di.impl.providers.SimpleBeanProvider

net.sf.jguiraffe.di.impl.providers.MapBeanProvider

net.sf.jguiraffe.di.impl.providers.PropertiesBeanProvider

All Implemented Interfaces:

BeanProvider

public class PropertiesBeanProvider
extends MapBeanProvider

A specialized BeanProvider implementation for creating a java.util.Properties object.

This class works analogously to MapBeanProvider, but it creates a specialized map: a Properties object. Because the major part of the functionality required is already implemented by the super class this implementation can be very simple. It merely has to override the createMap() method to return a Properties instance.

This class stands in a similar relation to MapBeanProvider as java.util.Properties stands to its ancestor java.util.HashMap: Properties operates on string keys and values, but through the methods inherited from its base class it is possible to store data of other types as well. The same is true for this BeanProvider implementation. It accepts any kind of dependencies for keys and values and does not perform a type check. So it lies in the responsibility of the user to populate the Properties object only with valid keys and values.

Version:

$Id: PropertiesBeanProvider.java 205 2012-01-29 18:29:57Z oheger $

Author:

Oliver Heger

Constructor Summary

Constructors

Constructor and Description
PropertiesBeanProvider(Collection<Dependency> keyDeps, Collection<Dependency> valDeps) Creates a new instance of PropertiesBeanProvider and initializes it with the dependencies for keys and values.

Method Summary

Modifier and Type	Method and Description
protected Map<Object,Object>	createMap() Creates the map managed by this bean provider.

Methods inherited from class net.sf.jguiraffe.di.impl.providers.MapBeanProvider

getBean, getBeanClass, getDependencies, getKeyDependencies, getValueDependencies, isOrdered

Methods inherited from class net.sf.jguiraffe.di.impl.providers.SimpleBeanProvider

getLockID, isBeanAvailable, setLockID, shutdown

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertiesBeanProvider

public PropertiesBeanProvider(Collection<Dependency> keyDeps,
                              Collection<Dependency> valDeps)

Creates a new instance of PropertiesBeanProvider and initializes it with the dependencies for keys and values. Note that the ordered flag supported by the super class does not make sense in this context.

Parameters:

keyDeps - the dependencies for the property keys (must not be null)

valDeps - the dependencies for the property values (must not be null)

Throws:

IllegalArgumentException - if either keyDeps or valDeps is null or the sizes of the collections are different

Method Detail

createMap

protected Map<Object,Object> createMap()

Creates the map managed by this bean provider. This implementation constructs a new Properties object.

Overrides:

createMap in class MapBeanProvider

Returns:

the map managed by this bean provider