ServiceDiscovery

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org.dinopolis.util.servicediscovery
Class ServiceDiscovery

java.lang.Object
  org.dinopolis.util.servicediscovery.ServiceDiscovery

public class ServiceDiscovery
extends java.lang.Object

Implement the JDK1.3 'Service Provider' specification. ( http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html )

The caller will first configure the discoverer by adding (in the desired order) all the places to look for the META-INF/services. Currently we support loaders. The directory META-INF/services contains the following information: for every service a file exists that is named like the service interface/class/abstract class. This files contains names of classes that implement this interface or extend this class/abstract class.

The findServices() method will check every class loader for the META-INF/services directory.

This class was inspired by the org.apache.commons.discovery.ServiceDiscovery classes.

Version:: $Revision: 1.2 $

Field Summary

protected java.util.Vector class_loaders_


protected static java.lang.String SERVICE_HOME


Constructor Summary

ServiceDiscovery()
          Construct a new service discoverer

ServiceDiscovery(boolean use_system_classloader)
          Construct a new service discoverer.

Method Summary

void addClassLoader(java.lang.ClassLoader loader)
          Specify a new class loader to be used in searching.

ServiceInfo[] findServices(java.lang.String name)
          Returns information about services found for the given class/interface name.

java.lang.Object[] getServices(java.lang.Class clazz)
          Returns instances of services found for the given class/interface name.

java.lang.Object[] getServices(java.lang.String class_name)
          Returns services found for the given class/interface name.

java.lang.ClassLoader getThreadClassLoader()
          Convenience method to find the thread class loader.

Methods inherited from class java.lang.Object

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

Field Detail

SERVICE_HOME

protected static final java.lang.String SERVICE_HOME

See Also:: Constant Field Values

class_loaders_

protected java.util.Vector class_loaders_

Constructor Detail