/*
 * 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 (query == null) {
            return null;
        }
        if (smartFieldMappers == null) {
            return query;
        }
        if (!smartFieldMappers.hasDocMapper() || !smartFieldMappers.explicitTypeInName()) {
            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() || !smartFieldMappers.explicitTypeInName()) {
            return filter;
        }
        DocumentMapper docMapper = smartFieldMappers.docMapper();
        return new AndFilter(ImmutableList.of(parseContext.cacheFilter(docMapper.typeFilter(), null), filter));
    }
}

@@ -2517,16 +2517,22 @@
 p_terms_
+boost_
 %22)) %7B%0A  
@@ -2604,16 +2604,22 @@
 p_terms_
+boost_
 %22.length
@@ -2662,39 +2662,41 @@
 rmQuery.TopTerms
-Scoring
+BoostOnly
 BooleanQueryRewr
@@ -2762,16 +2762,21 @@
 topTerms
+Boost
 %22)) %7B%0A  
@@ -2846,16 +2846,21 @@
 topTerms
+Boost
 %22.length
@@ -2915,15 +2915,17 @@
 erms
-Scoring
+BoostOnly
 Bool
@@ -2997,38 +2997,32 @@
 With(%22top_terms_
-boost_
 %22)) %7B%0A          
@@ -3078,38 +3078,32 @@
 ring(%22top_terms_
-boost_
 %22.length()));%0A  
@@ -3142,33 +3142,31 @@
 ery.TopTerms
-BoostOnly
+Scoring
 BooleanQuery
@@ -3228,37 +3228,32 @@
 tsWith(%22topTerms
-Boost
 %22)) %7B%0A          
@@ -3307,37 +3307,32 @@
 string(%22topTerms
-Boost
 %22.length()));%0A  
@@ -3371,33 +3371,31 @@
 ery.TopTerms
-BoostOnly
+Scoring
 BooleanQuery

fix top_terms_boost parsing for multi term rewrite