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From "Mark Hindess (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-6553) Implement ServiceRegistry.lookupProviders(class)
Date Mon, 16 Aug 2010 21:56:31 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-6553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mark Hindess reassigned HARMONY-6553:
-------------------------------------

    Assignee: Mark Hindess

> Implement ServiceRegistry.lookupProviders(class)
> ------------------------------------------------
>
>                 Key: HARMONY-6553
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6553
>             Project: Harmony
>          Issue Type: Sub-task
>            Reporter: Lang Yang
>            Assignee: Mark Hindess
>         Attachments: HARMONY-6553-v3.diff
>
>
> spec - http://java.sun.com/j2se/1.4.2/docs/api/javax/imageio/spi/ServiceRegistry.html#lookupProviders(java.lang.Class)
> I have created a new Iterator - "private static class LookupProvidersIterator implements
Iterator" for this method. The iterator needs to instantiates new objects and throws ServiceConfigurationError
exception at runtime, so we have to use customized Iterator.
> The flow: 
> 1. call ClassLoader.getResourse(String) to get a set of provider-configuration files
that related to the specified class.
> 2. The iterator parses all provider-configuration files to get the names of provider
classes
>     - Provider-Configuration File spec: http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html#Provider
Configuration File
> 3. In LookupProvidersIterator.next(), instantiate objects

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