Answered my own qs, I think:
Trying to build a simple UpdateRequestProcessor that keeps a field
(the time of original index) when overwriting a document.
1) Can I make a updateRequestProcessor chain only work as a certain
handler or does putting the following in my solrconfig.xml:
<updateRequestProcessorChain>
<processor class="myspecial.KeepIndexedDateFactory" >
<processor class="solr.RunUpdateProcessorFactory" />
<processor class="solr.LogUpdateProcessorFactory" />
</updateRequestProcessorChain>
Just handle all document updates?
What you have to do is:
<requestHandler name="/update2"
class="solr.XmlUpdateRequestHandler" >
<lst name="invariants">
<str name="update.processor">KeepIndexed</str>
</lst>
</requestHandler>
<updateRequestProcessorChain name="KeepIndexed">
<processor class="myspecial.KeepIndexedDateFactory"/>
<processor class="solr.RunUpdateProcessorFactory" />
<processor class="solr.LogUpdateProcessorFactory" />
</updateRequestProcessorChain>
And then calls to /update2 will go through the chain. Calls to /update
will not.
2) Does a UpdateRequestProcessor support inform ?
No, not that I can tell. And the factory won't get instantiated until
the first time you use it.
