On May 10, 2006, at 3:01 PM, Yonik Seeley wrote:
On 5/10/06, Erik Hatcher <[EMAIL PROTECTED]> wrote:
I've started down this route, but I'm not sure how to initialize my
cache the first time.
I need access to the IndexReader to build the cache, and at this
point I don't need any incremental cache updates - if a new
IndexSearcher is swapped in, I want to rebuild the cache.
Should I combine a custom SolrCache with a newSearcher listener to
have it generated right away? I put in a dummy cache and
regenerator, but only see the cache .init() method being called, not
the warm() method (on application server startup). How can I
bootstrap it such that my cache gets built on app. startup?
If your cache is populated as the result of any request to your
plugin, simply send a request via a firstSearcher hook. If it's not
populated for any request, then send a special request that your
plugin would recognize as a "populate cache" request.
Sorry I'm being dense today, though I really do appreciate the
incredibly fast response time you and Hoss have on this. My cache is
not available in newSearcher() at startup time:
public class CacheFacetsListener implements SolrEventListener {
public void init(NamedList namedList) {
}
public void postCommit() {
throw new UnsupportedOperationException();
}
public void newSearcher(SolrIndexSearcher newSearcher,
SolrIndexSearcher currentSearcher) {
try {
SolrCache cache = newSearcher.getCache("facet_cache");
if (cache == null) {
System.out.println("!!!!! cache is null");
}
cache.warm(newSearcher, null);
} catch (IOException e) {
log.severe(e.getMessage());
}
}
}
I'm getting the "cache is null" message. Though the cache is created
and init()'d as I see it's diagnostic output in Jetty's console
before the NPE:
public class FacetCache implements SolrCache {
private Map facetCache; // key is field, and key to inner map is
value
private State state;
private void loadFacets(IndexReader reader) throws IOException {
System.out.println("Loading facets for " + reader.numDocs() + "
documents ...");
// ....
System.out.println("Done loading facets.");
}
public Object init(Map args, Object persistence, CacheRegenerator
regenerator) {
state=State.CREATED;
System.out.println("<<<<< FacetCache.init >>>>>");
return persistence;
}
// ......
}
And from solrconfig.xml:
<cache name="facet_cache"
class="org.nines.FacetCache"
/>
The console has this output:
May 10, 2006 3:44:26 PM org.apache.solr.search.SolrIndexSearcher <init>
INFO: Opening [EMAIL PROTECTED] main
<<<<< FacetCache.init >>>>>
May 10, 2006 3:44:26 PM org.apache.solr.core.SolrCore registerSearcher
INFO: Registered new searcher [EMAIL PROTECTED] main
!!!!! cache is null
May 10, 2006 3:44:26 PM org.apache.solr.core.SolrException log
SEVERE: java.lang.NullPointerException
at org.nines.CacheFacetsListener.newSearcher
(CacheFacetsListener.java:24)
at org.apache.solr.core.SolrCore$2.call(SolrCore.java:427)
I'm probably making this more difficult than it needs to be, but
today I'm slow :) What am I doing wrong?
Thanks,
Erik
