org.dspace.discovery
Class IndexEventConsumer

java.lang.Object
  org.dspace.discovery.IndexEventConsumer

All Implemented Interfaces:

Consumer

public class IndexEventConsumer
extends Object
implements Consumer

Class for updating search indices in discovery from content events.

Author:

Kevin Van de Velde (kevin at atmire dot com), Mark Diggory (markd at atmire dot com), Ben Bosman (ben at atmire dot com)

Constructor Summary

IndexEventConsumer()

Method Summary

void	consume(Context ctx, Event event) Consume a content event -- just build the sets of objects to add (new) to the index, update, and delete.
void	end(Context ctx) Process sets of objects to add, update, and delete in index.
void	finish(Context ctx)
void	initialize()

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexEventConsumer

public IndexEventConsumer()

Method Detail

initialize

public void initialize()
                throws Exception

Specified by:

initialize in interface Consumer

Throws:

Exception

consume

public void consume(Context ctx,
                    Event event)
             throws Exception

Consume a content event -- just build the sets of objects to add (new) to the index, update, and delete.

Specified by:

consume in interface Consumer

Parameters:

ctx - DSpace context

event - Content event

Throws:

Exception

end

public void end(Context ctx)
         throws Exception

Process sets of objects to add, update, and delete in index. Correct for interactions between the sets -- e.g. objects which were deleted do not need to be added or updated, new objects don't also need an update, etc.

Specified by:

end in interface Consumer

Throws:

Exception

finish

public void finish(Context ctx)
            throws Exception

Specified by:

finish in interface Consumer

Throws:

Exception