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https://issues.apache.org/jira/browse/SOLR-2802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hoss Man updated SOLR-2802:
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Attachment: SOLR-2802_update_processor_toolkit.patch
Lance: see my 01/Oct/11 comment responding to Erik's nearly identical question
(re: scripting)
Updated patch adds some more tools to the tool box...
* HTMLStripFieldUpdateProcessorFactory
* FirstFieldValueUpdateProcessorFactory
* LastFieldValueUpdateProcessorFactory
* MinFieldValueUpdateProcessorFactory
* MaxFieldValueUpdateProcessorFactory
The last 4 are subclasses of a new intermediate base class
"FieldValueSubsetUpdateProcessorFactory" designed to make it easy to write
subclasses that want to look at all of the values for a field as a Collection,
and then return some subset of those values. (in these 4 cases, the subset is
always a collection containing a single value)
Working with this patch today was he first time i didn't feel like i needed to
tweak the existing base classes, which has me starting to think that the API is
probably gelled enough for mass consumption. I'd really like to get some more
voices chiming in on what they think of the field selector configuration schema
so we can move forward on getting what's here committed on trunk, and then
iteratively work on adding more concrete subclasses until we're *really* sure
that this API makes sense for people to use when writing subclasses, and then
look at backporting to 3x.
anyone have any opinions on the syntax?
> Toolkit of UpdateProcessors for modifying document values
> ---------------------------------------------------------
>
> Key: SOLR-2802
> URL: https://issues.apache.org/jira/browse/SOLR-2802
> Project: Solr
> Issue Type: New Feature
> Reporter: Hoss Man
> Attachments: SOLR-2802_update_processor_toolkit.patch,
> SOLR-2802_update_processor_toolkit.patch,
> SOLR-2802_update_processor_toolkit.patch
>
>
> Frequently users ask about questions about things where the answer is "you
> could do it with an UpdateProcessor" but the number of our of hte box
> UpdateProcessors is generally lacking and there aren't even very good base
> classes for the common case of manipulating field values when adding documents
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