Trey Grainger created SOLR-6492:
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Summary: Solr field type that supports multiple, dynamic analyzers
Key: SOLR-6492
URL: https://issues.apache.org/jira/browse/SOLR-6492
Project: Solr
Issue Type: New Feature
Components: Schema and Analysis
Reporter: Trey Grainger
Fix For: 4.11
A common request - particularly for multilingual search - is to be able to
support one or more dynamically-selected analyzers for a field. For example,
someone may have a "content" field and pass in a document in Greek (using an
Analyzer with Tokenizer/Filters for German), a separate document in English
(using an English Analyzer), and possibly even a field with mixed-language
content in Greek and English. This latter case could pass the content
separately through both an analyzer defined for Greek and another Analyzer
defined for English, stacking or concatenating the token streams based upon the
use-case.
There are some distinct advantages in terms of index size and query performance
which can be obtained by stacking terms from multiple analyzers in the same
field instead of duplicating content in separate fields and searching across
multiple fields.
Other non-multilingual use cases may include things like switching to a
different analyzer for the same field to remove a feature (i.e. turning on/off
query-time synonyms against the same field on a per-query basis).
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