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https://issues.apache.org/jira/browse/SOLR-11916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16349106#comment-16349106
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ASF subversion and git services commented on SOLR-11916:
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Commit fb0e04e5bc0e79eb137e2e7944a2933a19163c35 in lucene-solr's branch
refs/heads/branch_7x from Chris Hostetter
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=fb0e04e ]
SOLR-11916: new SortableTextField which supports analysis/searching just like
TextField, but also sorting/faceting just like StrField
(cherry picked from commit 95122e14481a4dd623e184ca261f8bf158fd3a7c)
> new SortableTextField using docValues built from the original string input
> --------------------------------------------------------------------------
>
> Key: SOLR-11916
> URL: https://issues.apache.org/jira/browse/SOLR-11916
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Schema and Analysis
> Reporter: Hoss Man
> Assignee: Hoss Man
> Priority: Major
> Attachments: SOLR-11916.patch, SOLR-11916.patch
>
>
> I propose adding a new SortableTextField subclass that would functionally
> work the same as TextField except:
> * {{docValues="true|false"}} could be configured, with the default being
> "true"
> * The docValues would contain the original input values (just like StrField)
> for sorting (or faceting)
> ** By default, to protect users from excessively large docValues, only the
> first 1024 of each field value would be used – but this could be overridden
> with configuration.
> ----
> Consider the following sample configuration:
> {code:java}
> <field name="title" type="text_sortable" docValues="true"
> indexed="true" docValues="true" stored="true" multiValued="false"/>
> <fieldType name="text_sortable" class="solr.SortableTextField">
> <analyzer type="index">
> ...
> </analyzer>
> <analyzer type="query">
> ...
> </analyzer>
> </fieldType>
> {code}
> Given a document with a title of "Solr In Action"
> Users could:
> * Search for individual (indexed) terms in the "title" field:
> {{q=title:solr}}
> * Sort documents by title ( {{sort=title asc}} ) such that this document's
> sort value would be "Solr In Action"
> If another document had a "title" value that was longer then 1024 chars, then
> the docValues would be built using only the first 1024 characters of the
> value (unless the user modified the configuration)
> This would be functionally equivalent to the following existing configuration
> - including the on disk index segments - except that the on disk DocValues
> would refer directly to the "title" field, reducing the total number of
> "field infos" in the index (which has a small impact on segment housekeeping
> and merge times) and end users would not need to sort on an alternate
> "title_string" field name - the original "title" field name would always be
> used directly.
> {code:java}
> <field name="title" type="text"
> indexed="true" docValues="true" stored="true" multiValued="false"/>
> <field name="title_string" type="string"
> indexed="false" docValues="true" stored="false" multiValued="false"/>
> <copyField source="title" dest="title_string" maxCharsForDocValues="1024" />
> {code}
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