64bf849cb14c6c378206ae1702d931137a3cf365,modules/elasticsearch/src/main/java/org/elasticsearch/index/query/MoreLikeThisQueryParser.java,MoreLikeThisQueryParser,parse,#QueryParseContext#,48

Before Change


            throw new QueryParsingException(parseContext.index(), "more_like_this requires 'fields' to be specified");
        }

        mltQuery.setAnalyzer(parseContext.mapperService().searchAnalyzer());
        return mltQuery;
    }
}

After Change


        MoreLikeThisQuery mltQuery = new MoreLikeThisQuery();
        mltQuery.setMoreLikeFields(new String[]{AllFieldMapper.NAME});
        mltQuery.setSimilarity(parseContext.searchSimilarity());
        Analyzer analyzer = null;

        XContentParser.Token token;
        String currentFieldName = null;
        while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
            if (token == XContentParser.Token.FIELD_NAME) {
                currentFieldName = parser.currentName();
            } else if (token.isValue()) {
                if ("like_text".equals(currentFieldName) || "likeText".equals(currentFieldName)) {
                    mltQuery.setLikeText(parser.text());
                } else if ("min_term_freq".equals(currentFieldName) || "minTermFreq".equals(currentFieldName)) {
                    mltQuery.setMinTermFrequency(parser.intValue());
                } else if ("max_query_terms".equals(currentFieldName) || "maxQueryTerms".equals(currentFieldName)) {
                    mltQuery.setMaxQueryTerms(parser.intValue());
                } else if ("min_doc_freq".equals(currentFieldName) || "minDocFreq".equals(currentFieldName)) {
                    mltQuery.setMinDocFreq(parser.intValue());
                } else if ("max_doc_freq".equals(currentFieldName) || "maxDocFreq".equals(currentFieldName)) {
                    mltQuery.setMaxDocFreq(parser.intValue());
                } else if ("min_word_len".equals(currentFieldName) || "minWordLen".equals(currentFieldName)) {
                    mltQuery.setMinWordLen(parser.intValue());
                } else if ("max_word_len".equals(currentFieldName) || "maxWordLen".equals(currentFieldName)) {
                    mltQuery.setMaxWordLen(parser.intValue());
                } else if ("boost_terms".equals(currentFieldName) || "boostTerms".equals(currentFieldName)) {
                    mltQuery.setBoostTerms(true);
                    mltQuery.setBoostTermsFactor(parser.floatValue());
                } else if ("percent_terms_to_match".equals(currentFieldName) || "percentTermsToMatch".equals(currentFieldName)) {
                    mltQuery.setPercentTermsToMatch(parser.floatValue());
                } else if ("analyzer".equals(currentFieldName)) {
                    analyzer = parseContext.analysisService().analyzer(parser.text());
                }
            } else if (token == XContentParser.Token.START_ARRAY) {
                if ("stop_words".equals(currentFieldName) || "stopWords".equals(currentFieldName)) {
                    Set<String> stopWords = Sets.newHashSet();
                    while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
                        stopWords.add(parser.text());
                    }
                    mltQuery.setStopWords(stopWords);
                } else if ("fields".equals(currentFieldName)) {
                    List<String> fields = Lists.newArrayList();
                    while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
                        fields.add(parseContext.indexName(parser.text()));
                    }
                    mltQuery.setMoreLikeFields(fields.toArray(new String[fields.size()]));
                }
            }
        }

        if (mltQuery.getLikeText() == null) {
            throw new QueryParsingException(parseContext.index(), "more_like_this requires 'like_text' to be specified");
        }
        if (mltQuery.getMoreLikeFields() == null || mltQuery.getMoreLikeFields().length == 0) {
            throw new QueryParsingException(parseContext.index(), "more_like_this requires 'fields' to be specified");
        }

        if (analyzer == null) {
            analyzer = parseContext.mapperService().searchAnalyzer();
        }

        mltQuery.setAnalyzer(analyzer);