verinec.adaptation
Class PropDistFactory

java.lang.Object
  verinec.adaptation.PropDistFactory

All Implemented Interfaces:

IDistributorFactory

public class PropDistFactory
extends Object
implements IDistributorFactory

Creates distributors for given targets, based on the name of the distributor. This factory is configured by a properties file either specified upon instantiation or read from /res/distributormap.properties within the classpath. The file contains a mapping from distributor names (i.e. cp, scp) to fully qualified class names of IDistributor instances.

Version:

$Revision: 824 $

Author:

david.buchmann at unifr.ch

Field Summary

private Properties

map

Constructor Summary

PropDistFactory()
Initializes the mapping with the file /res/distributormap.properties.

PropDistFactory(InputStream propertiesFile)
Initializes the mapping with the stream specified as parameter.

Method Summary

IDistributor	createDistributor(Element target) Create a distributor suitable for the given target.
protected void	init(InputStream propertiesFile) Initialize the map.

Methods inherited from class java.lang.Object

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

Field Detail

map

private Properties map

Constructor Detail

PropDistFactory

public PropDistFactory()
                throws VerinecException

Initializes the mapping with the file /res/distributormap.properties.

Throws:

VerinecException - if the default properties can not be read

PropDistFactory

public PropDistFactory(InputStream propertiesFile)
                throws VerinecException

Initializes the mapping with the stream specified as parameter. If you want it to read a file, you can use new FileInputStream(file) as argument.

Parameters:

propertiesFile - an opened file containing the mapping between distribution names and fully qualified class names.

Throws:

VerinecException - if the properties file can not be read

Method Detail

init

protected void init(InputStream propertiesFile)
             throws VerinecException

Initialize the map.

Parameters:

propertiesFile - file resouce to load mapping from, in the format of java.util.Properties

Throws:

VerinecException - if the inputstream is not a valid properties file.

createDistributor

public IDistributor createDistributor(Element target)
                               throws VerinecException

Create a distributor suitable for the given target.

Reads the class name from the mapping, loads that class and sets the target.

Specified by:

createDistributor in interface IDistributorFactory

Parameters:

target - The tr:target element of the service configuration to be distributed.

Returns:

Instance of the distributor to be used with the configuration data having this target.

Throws:

VerinecException - if no distributor can be found or loading it fails.