You gave an XML example, so I assumed you were working with XML!
In JSON...
[{"id": "doc-id", "tags": {"add": ["a", "b"]}]
and
[{"id": "doc-id", "tags": {"set": null}}]
BTW, this kind of stuff is covered in the book, separate chapters for XML
and JSON, each with dozens of examples like this.
-- Jack Krupansky
-----Original Message-----
From: Dotan Cohen
Sent: Thursday, May 30, 2013 9:36 AM
To: solr-user@lucene.apache.org
Subject: Re: Removing a single value from a multiValue field
On Thu, May 30, 2013 at 3:42 PM, Jack Krupansky <j...@basetechnology.com>
wrote:
First, you cannot do any internal editing of a multi-valued list, other
than:
1. Replace the entire list.
2. Add values on to the end of the list.
Thank you. I meant that I am actually editing the entire document.
Reading it, changing the values that I need, and then 'updating' it. I
will look into updating only the single multiValued field.
But you can do both of those operations on a single multivalued field with
"atomic update" without reading and writing the entire document.
Second, there is no "<arr>" element in the Solr Update XML format. Only
"<field>".
To simply replace the full, current value of one multi-valued field:
<add>
<doc>
<field name="id">doc-id</field>
<field name="tags" update="set">a</field>
<field name="tags" update="set">b</field>
</doc>
</add>
If you simply want to append a couple of values:
<add>
<doc>
<field name="id">doc-id</field>
<field name="tags" update="add">a</field>
<field name="tags" update="add">b</field>
</doc>
</add>
To empty out a multivalued field:
<add>
<doc>
<field name="id">doc-id</field>
<field name="tags" update="set" null="true" />
</doc>
</add>
Thank you. I will see about translating that into the JSON format that
I work with.
--
Dotan Cohen
http://gibberish.co.il
http://what-is-what.com
