org.eclipse.jkube.kit.common.util

Class PluginServiceFactory<C>

java.lang.Object

org.eclipse.jkube.kit.common.util.PluginServiceFactory<C>

public final class PluginServiceFactory<C>
extends Object

A simple factory for creating services with no-arg constructors from a textual descriptor. This descriptor, which must be a resource loadable by this class' classloader, is a plain text file which looks like

   com.example.MyProjectLabelEnricher
   !org.eclipse.jkube.maven.jkube.enhancer.DefaultProjectLabelEnricher
   com.example.AnotherEnricher,50
 

If a line starts with ! it is removed if it has been added previously. The optional second numeric value is the order in which the services are returned.

Author:

roland

Constructor Summary

Constructors

Constructor and Description
PluginServiceFactory(C context, ClassLoader... loaders)

Method Summary

Modifier and Type	Method and Description
void	addAdditionalClassLoader(ClassLoader classLoader)
<T> List<T>	createServiceObjects(String... descriptorPaths) Create a list of services ordered according to the ordering given in the service descriptor files.

Methods inherited from class java.lang.Object

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

Constructor Detail

PluginServiceFactory

public PluginServiceFactory(C context,
                            ClassLoader... loaders)

Method Detail

createServiceObjects

public <T> List<T> createServiceObjects(String... descriptorPaths)

Create a list of services ordered according to the ordering given in the service descriptor files. Note, that the descriptor will be looked up in the whole classpath space, which can result in reading in multiple descriptors with a single path. Note, that the reading order for multiple resources with the same name is not defined.

Type Parameters:

T - type of the service objects to create

Parameters:

descriptorPaths - a list of resource paths which are handle in the given order. Normally, default service should be given as first parameter so that custom descriptors have a chance to remove a default service.

Returns:

an ordered list of created services or an empty list.

addAdditionalClassLoader

public void addAdditionalClassLoader(ClassLoader classLoader)