/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.elasticsearch.index.query.support;
import org.apache.lucene.search.Filter;
import org.apache.lucene.search.FilteredQuery;
import org.apache.lucene.search.MultiTermQuery;
import org.apache.lucene.search.Query;
import org.elasticsearch.ElasticSearchIllegalArgumentException;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.collect.ImmutableList;
import org.elasticsearch.common.lucene.search.AndFilter;
import org.elasticsearch.index.mapper.DocumentMapper;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.query.QueryParseContext;
/**
* @author kimchy (shay.banon)
*/
public final class QueryParsers {
private QueryParsers() {
}
public static MultiTermQuery.RewriteMethod parseRewriteMethod(@Nullable String rewriteMethod) {
if (rewriteMethod == null) {
return MultiTermQuery.CONSTANT_SCORE_AUTO_REWRITE_DEFAULT;
}
if ("constant_score_auto".equals(rewriteMethod) || "constant_score_auto".equals(rewriteMethod)) {
return MultiTermQuery.CONSTANT_SCORE_AUTO_REWRITE_DEFAULT;
}
if ("scoring_boolean".equals(rewriteMethod) || "scoringBoolean".equals(rewriteMethod)) {
return MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE;
}
if ("constant_score_boolean".equals(rewriteMethod) || "constantScoreBoolean".equals(rewriteMethod)) {
return MultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE;
}
if ("constant_score_filter".equals(rewriteMethod) || "constantScoreFilter".equals(rewriteMethod)) {
return MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE;
}
if (rewriteMethod.startsWith("top_terms_")) {
int size = Integer.parseInt(rewriteMethod.substring("top_terms_".length()));
return new MultiTermQuery.TopTermsScoringBooleanQueryRewrite(size);
}
if (rewriteMethod.startsWith("topTerms")) {
int size = Integer.parseInt(rewriteMethod.substring("topTerms".length()));
return new MultiTermQuery.TopTermsScoringBooleanQueryRewrite(size);
}
if (rewriteMethod.startsWith("top_terms_boost_")) {
int size = Integer.parseInt(rewriteMethod.substring("top_terms_boost_".length()));
return new MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite(size);
}
if (rewriteMethod.startsWith("topTermsBoost")) {
int size = Integer.parseInt(rewriteMethod.substring("topTermsBoost".length()));
return new MultiTermQuery.TopTermsBoostOnlyBooleanQueryRewrite(size);
}
throw new ElasticSearchIllegalArgumentException("Failed to parse rewrite_method [" + rewriteMethod + "]");
}
public static Query wrapSmartNameQuery(Query query, @Nullable MapperService.SmartNameFieldMappers smartFieldMappers,
QueryParseContext parseContext) {
if (smartFieldMappers == null) {
return query;
}
if (!smartFieldMappers.hasDocMapper()) {
return query;
}
DocumentMapper docMapper = smartFieldMappers.docMapper();
return new FilteredQuery(query, parseContext.cacheFilter(docMapper.typeFilter(), null));
}
public static Filter wrapSmartNameFilter(Filter filter, @Nullable MapperService.SmartNameFieldMappers smartFieldMappers,
QueryParseContext parseContext) {
if (smartFieldMappers == null) {
return filter;
}
if (!smartFieldMappers.hasDocMapper()) {
return filter;
}
DocumentMapper docMapper = smartFieldMappers.docMapper();
return new AndFilter(ImmutableList.of(parseContext.cacheFilter(docMapper.typeFilter(), null), filter));
}
}