/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.solr.search.concordance;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.solr.cloud.RequestThreads;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.core.SolrCore;
import org.apache.solr.handler.component.ResponseBuilder;
import org.apache.solr.handler.component.SearchComponent;
import org.apache.solr.util.plugin.SolrCoreAware;
public class KeywordCooccurComponent extends SearchComponent implements SolrCoreAware {
public static final String COMPONENT_NAME = "kwCoSearch";
Boolean isLocal = true;
/**
* Stack of worker threads, much like "ShardRequest's" except these do not have to be search requests.
*/
RequestThreads<CooccurConfig> requestPump = null;
@Override
public void inform(SolrCore core) {
}
@Override
public String getDescription() {
return "SearchComponent wrapper for Keyword Concordance results";
}
@Override
public String getSource() {
// TODO Auto-generated method stub
return null;
}
@Override
public void prepare(ResponseBuilder rb) throws IOException {
SolrParams params = rb.req.getParams();
isLocal = rb.req.getParams().getBool("lq");
if (isLocal == null)
isLocal = rb.shards == null || rb.shards.length < 2;
if (!isLocal) {
System.out.println("NOT IS LOCAL");
String thisUrl = rb.req.getCore().getCoreDescriptor().getCoreContainer().getZkController().getBaseUrl();
List<String> shards = new ArrayList<String>(rb.shards.length);
for (String shard : rb.shards) {
String tmp = (shard.contains("/")) ? shard.substring(0, shard.indexOf("/")) : shard;
if (!thisUrl.contains(tmp)) //ignore local core
shards.add(shard);
}
requestPump = KeywordCooccurRankHandler.initRequestPump(shards, rb.req);
}
}
@Override
public int distributedProcess(ResponseBuilder rb) throws IOException {
if (rb.stage == ResponseBuilder.STAGE_GET_FIELDS)
process(rb); //run this locally instead of through the request pump
return ResponseBuilder.STAGE_DONE;
}
/**
* in this component, this is called 3 different ways:
* 1. unsharded config
* 2. user sends in lq=true param
* 3. it is distributed, in which case it uses the rb's query as a filter on the local core, and shards out requests to the remaining cores
*/
@Override
public void process(ResponseBuilder rb) throws IOException {
NamedList results = null;
try {
results = KeywordCooccurRankHandler.doLocalSearch(rb.getQuery(), rb.req);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
rb.rsp.add(KeywordCooccurRankHandler.NODE, results);
/**/
}
@Override
public void finishStage(ResponseBuilder rb) {
SolrParams params = rb.req.getParams();
System.out.println("FINISH STAGE: " + params.toNamedList().size());
if (rb.stage != ResponseBuilder.STAGE_GET_FIELDS)
return;
System.out.println("FINISH STAGE2: " + params.toNamedList().size());
/**
* it'd be awesome if this code worked, but it doesn't because
* I couldn't figure out how to make ShardRequest make requests
* that were not document-list based without editing the
* ResponseBuilder class.
* ResponseBuilder.doFacets, ResponseBuilder.doTerms,
* ResponseBuilder.doHighlights, ResponseBuilder.doWHAT !?!
*
for (ShardRequest sreq : rb.finished)
{
for (ShardResponse srsp : sreq.responses)
{
System.out.println("xx99");
NamedList<Object> nl = (NamedList)srsp.getSolrResponse().getResponse();
if(nl != null)
results.add(nl, "extra");
}
}
/**/
if (!isLocal && requestPump != null) {
KeywordCooccurRankHandler.Results results = new KeywordCooccurRankHandler.Results(requestPump.getMetadata());
results.add(rb.rsp.getValues(), "local");
//remove previous result node to replace with the one's below
if (results.numResults > 0)
rb.rsp.getValues().remove(KeywordCooccurRankHandler.NODE);
if (!isLocal)
results = KeywordCooccurRankHandler.spinWait(requestPump, results);
rb.rsp.add(KeywordCooccurRankHandler.NODE, results.toNamedList());
isLocal = null;
requestPump = null;
}
}
}