@Override
	public void setBundleContext ( BundleContext bc )
	{
		this.bc = bc;
	}

@Override
	public void postProcessBeanFactory ( ConfigurableListableBeanFactory factory )
			throws BeansException
	{
		DefaultListableBeanFactory dlbf = (DefaultListableBeanFactory) factory;

		// Setup the "donor" application context that will be used to load necessary
		// bean definitions
		OsgiBundleXmlApplicationContext ctx = new OsgiBundleXmlApplicationContext ( );

  // bc obtained above - by implementing BundleContextAware.setBundleContext
		ctx.setBundleContext ( bc );

		// Initialize bean definition locations in the "donor" context
		ctx.setConfigLocations ( new String [ ] { "META-INF/sample-setup.xml" } );

		// Load bean definitions
		ctx.refresh ( );

		// Copy bean definitions from "donor" to current context
		for ( String bean : ctx.getBeanFactory ( ).getBeanDefinitionNames ( ) )
		{
   // Register bean definitions in current application context
			dlbf.registerBeanDefinition ( bean, ctx.getBeanFactory ( ).getBeanDefinition ( bean ) );
		}
	}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:osgi="http://www.springframework.org/schema/osgi"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
		http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">

	<context:property-placeholder location="file:/etc/sample.conf"/>

 <bean id="someString" class="java.lang.String" factory-method="valueOf">
   <constructor-arg value="${sample.value}"/>
 </bean>
</beans>