On Sep 19, 2008, at 11:49 AM, Mark Baird wrote:
I was finally given the go-ahead to upgrade from Solr 1.2 to 1.3 in
our
environment here at work now that 1.3 is final. However I'm running
into a
couple problems that I'm having trouble finding solutions to.
First, I've added a class to our Solr distribution that extends
StandardRequestHandler. In particular it overrides getFacetInfo and
uses
this to compute some aggregate values. Here's my code:
protected NamedList getFacetInfo(SolrQueryRequest req,
SolrQueryResponse
rsp, DocSet mainSet)
{
// Call the super class to get it's response first
NamedList res = super.getFacetInfo(req, rsp, mainSet);
// Now calculate all sums
NamedList aggregates = new NamedList();
try
{
aggregates.addAll(this.computeSums(req, mainSet));
aggregates.addAll(this.computeAverages(req, mainSet));
}
catch (IOException e)
{
e.printStackTrace();
SolrException.logOnce(SolrCore.log, "Exception during
aggregate
value calculations", e);
return res;
}
// add the aggregate fields to the response
res.add("facet_aggregates", aggregates);
return res;
}
However now StandardRequestHandler doesn't seem to implement the
getFacetInfo() method anymore. Did this method move to another class
somewhere? Or do I need to just do this aggregate stuff in a totally
different way in 1.3?
Not sure about aggregating, but the faceting is now handled in
FacetComponent, thus, you probably need to override that with your own
version.
Second, I've got some code running in the same JVM as Solr that does
some
stuff like getting the latest timestamp in the index to determine if
we need
to pull an update from our product info database, kicking off an
optimize
every night at 2:00AM, stuff like that. However I take it that this
line
won't work anymore due to the multicore stuff:
SolrCore core = SolrCore.getSolrCore();
That's fine, but how do I get a handle to the SolrCore intance(s)
now? The
SolrCore.getSolrCore method was static, the method in CoreContainer
that
replaces it is not static, so how, by just being in the same JVM,
can a
class get access to the CoreContainer?
It's available in the SolrDispatchFilter, so it might be reasonable to
extend that.
The only other thing I'm seeing is some deprecation messages using the
FieldType.getValueSource(SchemaField field) method. The source
looks like
this:
/** called to get the default value source (normally, from the
* Lucene FieldCache.)
*/
public ValueSource getValueSource(SchemaField field, QParser
parser) {
return getValueSource(field);
}
/**
* @deprecated use [EMAIL PROTECTED] #getValueSource(SchemaField, QParser)}
*/
@Deprecated
public ValueSource getValueSource(SchemaField field) {
return new OrdFieldSource(field.name);
}
Which I find a little funny. Don't use this deprecated method, use
this
other method instead, which immediately throws away the extra
parameter and
just calls the deprecated method anyway?
Hmmm, that does smell. It's been that way for a while, too. I'll see
if I can dig up why that came about.
