opennlp-similarity/src/main/java/opennlp/tools/similarity/apps/solr/QueryExpansionRequestHandler.java

/*
 * 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 opennlp.tools.similarity.apps.solr;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;

import opennlp.tools.similarity.apps.HitBaseComparable;
import opennlp.tools.similarity.apps.utils.Pair;
import opennlp.tools.textsimilarity.ParseTreeChunkListScorer;
import opennlp.tools.textsimilarity.SentencePairMatchResult;
import opennlp.tools.textsimilarity.chunker2matcher.ParserChunker2MatcherProcessor;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryparser.classic.ParseException;
import org.apache.lucene.search.BooleanClause.Occur;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.CachingWrapperFilter;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.QueryWrapperFilter;
import org.apache.lucene.search.ScoreDoc;
import org.apache.solr.common.SolrDocument;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.params.CommonParams;
import org.apache.solr.common.params.ModifiableSolrParams;
import org.apache.solr.common.params.ShardParams;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.handler.RequestHandlerBase;
import org.apache.solr.handler.component.ResponseBuilder;
import org.apache.solr.handler.component.SearchComponent;
import org.apache.solr.handler.component.SearchHandler;
import org.apache.solr.handler.component.ShardHandler;
import org.apache.solr.handler.component.ShardRequest;
import org.apache.solr.handler.component.ShardResponse;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.response.ResultContext;
import org.apache.solr.response.SolrQueryResponse;
import org.apache.solr.schema.SchemaField;
import org.apache.solr.search.DocIterator;
import org.apache.solr.search.DocList;
import org.apache.solr.search.DocSlice;
import org.apache.solr.search.QParser;
import org.apache.solr.search.SolrIndexSearcher;
import org.apache.solr.util.RTimer;
import org.apache.solr.util.SolrPluginUtils;

public class QueryExpansionRequestHandler extends SearchHandler {

	public void handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp){
		try {
			//System.out.println("request before ="+req);
			SolrQueryRequest req1 = substituteField(req);
			//System.out.println("request after ="+req1);
			super.handleRequestBody(req1, rsp);
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}

	public static SolrQueryRequest substituteField(SolrQueryRequest req){
		SolrParams params = req.getParams();
		String query = params.get("q");
		System.out.println("query before ="+query);
		query = query.replace(' ', '_');
		System.out.println("query after ="+query);
		NamedList values = params.toNamedList();
		values.remove("q");
		values.add("q", query);
		params = SolrParams.toSolrParams(values);
		req.setParams(params);
		return req;
	}
}