An IndexReader with run-time support for synonyms
-------------------------------------------------
Key: LUCENE-835
URL: https://issues.apache.org/jira/browse/LUCENE-835
Project: Lucene - Java
Issue Type: New Feature
Components: Index
Affects Versions: 2.1
Reporter: Mark Harwood
Assigned To: Mark Harwood
These classes provide support for enabling the use of synonyms for terms in an
existing index.
While Analyzers can be used at Query-parse time or Index-time to inject
synonyms these are not always satisfactory means of providing support for
synonyms:
* Index-time injection of synonyms is less flexible because changing the lists
of synonyms requires an index rebuild.
* Query-parse-time injection is awkward because special support is required in
the parser/query logic to recognise and cater for the tokens that appear in
the same position. Additionally, any statistical analysis of the index content
via TermEnum/TermDocs etc does not consider the synonyms unless specific code
is added.
What is perhaps more useful is a transparent wrapper for the IndexReader that
provides a synonym-ized view of the index without requiring specialised support
in the calling code. All of the TermEnum/TermDocs interfaces remain the same
but behind the scenes synonyms are being considered/applied silently.
The classes supplied here provide this "virtual" view of the index and all
queries or other code that examines this index using the special reader benefit
from this view without requiring specialized code. A Junit test illustrates
this code in action.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
