Apache Solr Reference Guide Covering Apache Solr 6.0

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The keys listed in this file do not need to be unique. The file does not need to be sorted, but Solr will be able to
perform the lookup faster if it is.
Reloading an External File
It's possible to define an event listener to reload an external file when either a searcher is reloaded or when a
new searcher is started. See the section Query-Related Listeners for more information, but a sample definition in
solrconfig.xml might look like this:
The PreAnalyzedField Type
The PreAnalyzedField type provides a way to send to Solr serialized token streams, optionally with
independent stored values of a field, and have this information stored and indexed without any additional text
processing applied in Solr. This is useful if user wants to submit field content that was already processed by
some existing external text processing pipeline (e.g., it has been tokenized, annotated, stemmed, synonyms
inserted, etc.), while using all the rich attributes that Lucene's TokenStream provides (per-token attributes).
The serialization format is pluggable using implementations of PreAnalyzedParser interface. There are two
out-of-the-box implementations:
JsonPreAnalyzedParser: as the name suggests, it parses content that uses JSON to represent field's
content. This is the default parser to use if the field type is not configured otherwise.
SimplePreAnalyzedParser: uses a simple strict plain text format, which in some situations may be easier
to create than JSON.
There is only one configuration parameter, parserImpl. The value of this parameter should be a fully qualified
class name of a class that implements PreAnalyzedParser interface. The default value of this parameter is org.
apache.solr.schema.JsonPreAnalyzedParser.
By default, the query-time analyzer for fields of this type will be the same as the index-time analyzer, which
expects serialized pre-analyzed text. You must add a query type analyzer to your fieldType in order to perform
analysis on non-pre-analyzed queries. In the example below, the index-time analyzer expects the default JSON
serialization format, and the query-time analyzer will employ StandardTokenizer/LowerCaseFilter:
JsonPreAnalyzedParser
This is the default serialization format used by PreAnalyzedField type. It uses a top-level JSON map with the
following keys:
Key Description Required?
v Version key. Currently the supported version is 1.
required
Apache Solr Reference Guide 6.0
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