Doug is not talking about java serialization, he is talking about
general serialization used to store a Document in an Index.
On Sep 14, 2006, at 3:00 PM, Karl Wettin (JIRA) wrote:
[ http://issues.apache.org/jira/browse/LUCENE-671?
page=comments#action_12434791 ]
Karl Wettin commented on LUCENE-671:
------------------------------------
Cutting:
To make Documents fully-subclassible one would need to make their
serialization extensible.
I find this a bit strange considering RAMDirectory was not made
serializable until a few months ago.. But then it might just have
been something preemptive. Or perhaps people serialize documents
without adding them to the index? That too sounds quite fishy.
I'm all for definalizing Term and Document as this is something
required for my issue 550 index.
Hashtable based Document
------------------------
Key: LUCENE-671
URL: http://issues.apache.org/jira/browse/LUCENE-671
Project: Lucene - Java
Issue Type: Improvement
Components: Index, Search
Affects Versions: 2.0.0, 1.9
Reporter: Chris
Priority: Minor
Attachments: HashDocument.java, TestBenchDocuments.java
I've attached a Document based on a hashtable and a performance
test case. It performs better in most cases (all but enumeration
by my measurement), but likely uses a larger memory footprint. The
Document testcase will fail since it accesses the "fields"
variable directly and gets confused when it's not the list it
expected it to be.
If nothing else we would be interested in at least being able to
extend Document, which is currently declared final. (Anyone know
the performance gains on declaring a class final?) Currently we
have to maintain a copy of lucene which has methods and classes
definalized and overriden.
There are other classes as well that could be declared non-final
(Fieldable comes to mind) since it's possible to make changes for
project specific situations in those aswell but that's off-topic.
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