org.dspace.search
Class SearchConsumer

java.lang.Object
  extended by org.dspace.search.SearchConsumer
All Implemented Interfaces:
Consumer

public class SearchConsumer
extends Object
implements Consumer

Class for updating search indices from content events.

Version:
$Revision: 3705 $

Constructor Summary
SearchConsumer()
           
 
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)
          Finish - free any allocated resources.
 void initialize()
          Initialize - allocate any resources required to operate.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SearchConsumer

public SearchConsumer()
Method Detail

initialize

public void initialize()
                throws Exception
Description copied from interface: Consumer
Initialize - allocate any resources required to operate. This may include initializing any pooled JMS resources. Called ONCE when created by the dispatcher pool. This should be used to set up expensive resources that will remain for the lifetime of the consumer.

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
Description copied from interface: Consumer
Finish - free any allocated resources. Called when consumer (via it's parent dispatcher) is going to be destroyed by the dispatcher pool.

Specified by:
finish in interface Consumer
Throws:
Exception


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