[SOLR-260] reusable PluginLoader -- helper class to load plugins

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3
• Assignee: Ryan McKinley
• Reporter: Ryan McKinley
• Created: 11/Jun/07 21:59
• Updated: 10/May/13 10:40
• Resolved: 26/Oct/07 05:29

Description

As we talk about adding more configuration (Handlers, Highlighting, Components, etc) we should standardize the format and share the loading and initialization code.

This patch extracts the common stuff from SOLR-225 and makes it work with the RequestHandler framework.

This is an abstract base class – each implementation needs to take care of actually creating and initializing the instances:

abstract class PluginLoader<T>
{
abstract public T create( String className, NamedList args, Map<String,String> params );

abstract public void init( T plugin, NamedList args, Map<String,String> params );

public Map<String,T> load( NodeList nodes )

{ ... }

}

Issue Links

• is part of: SOLR-225 Allow pluggable Highlighting classes -- Formatters and Fragmenters