Thanks, Alex for the input. Let me provide a better example on what I'm trying to achieve. I have documents like this:
<doc> <field name="id">100</field> <field name="2_1600_i">1</field> <field name="5_1601_i">5</field> <field name="112_1602_i">7</field> </doc> The schema looks the usual way: <dynamicField name="*_i" type="int" indexed="true" stored="true"/> The dynamic field pattern I'm using is this: id_day_i. Each day I want to add new fields for the current day and remove the fields for the oldest one. <add><doc> <field name="id">100</field> <!-- add fields for current day --> <field name="251_1603_i" update="set">25</field> <!-- remove fields for oldest day --> <field name="2_1600_i" update="set" null="true">1</field> </doc></add> The problem is, I don't know the exact names of the fields I want to remove. All I know is that they end in *_1600_i. When removing fields from a document, I want to avoid querying SOLR to see what fields are actually present for the specific document. In this way, hopefully I can speed up the process. Querying to see the schema.xml is not going to help me much, since the field is defined a dynamic field *_i. This makes me think that expanding the documents client-side is not the best way to do it. Regarding the second approach, to expand the documents server-side. I took a look over the SOLR code and came upon the UpdateRequestProcessor.java class which had this interesting javadoc: * * This is a good place for subclassed update handlers to process the document before it is * * * indexed. You may wish to add/remove fields or check if the requested user is allowed to * * * update the given document...* As you can imagine, I have no expertise in SOLR code. How would you say it would be possible to retrieve the document and its fields for the given id and update the update/delete command to include the fields that match the pattern I'm giving (eg. *_1600_i)? Thanks, Costi On Tue, Apr 29, 2014 at 6:41 AM, Alexandre Rafalovitch <arafa...@gmail.com>wrote: > Not out of the box, as far as I know. > > Custom UpdateRequestProcessor could possibly do some sort of expansion > of the field name by verifying the actual schema. Not sure if API > supports that level of flexibility. Or, for latest Solr, you can > request the list of known field names via REST and do client-side > expansion instead. > > Regards, > Alex. > Personal website: http://www.outerthoughts.com/ > Current project: http://www.solr-start.com/ - Accelerating your Solr > proficiency > > > On Tue, Apr 29, 2014 at 12:20 AM, Costi Muraru <costimur...@gmail.com> > wrote: > > Hi guys, > > > > Would be possible, using Atomic Updates in SOLR4, to remove all fields > > matching a pattern? For instance something like: > > > > <add><doc> > > <field name="id">100</field> > > <*field name="*_name_i" update="set" null="true"></field>* > > </doc></add> > > > > Or something similar to remove certain fields in all documents. > > > > Thanks, > > Costi >
