osma commented on issue #536: Add support SurroundQueryParser to jena-text
URL: https://github.com/apache/jena/pull/536#issuecomment-478569188
 
 
   I still don't get the `switch` block. The control flow seems just...messy, 
with all the `if` checks and sometimes implicitly falling through to the next 
case, sometimes not.
   
   How about this:
   
   ```java
           switch(queryParserType) {
               case "SurroundQueryParser":
                   try {
                       query = 
org.apache.lucene.queryparser.surround.parser.QueryParser.parse(queryString).makeLuceneQueryField(docDef.getPrimaryField(),
 new BasicQueryFactory());
                   } 
catch(org.apache.lucene.queryparser.surround.parser.ParseException e) {
                       throw new ParseException(e.getMessage());
                   }
                   return query;
               case "ComplexPhraseQueryParser":
                   qp = new ComplexPhraseQueryParser(docDef.getPrimaryField(), 
analyzer);
                   break;
               default:
                   log.warn("Unknown query parser type '" + queryParserType + 
"'. Defaulting to standard QueryParser");
               case "AnalyzingQueryParser": // since Lucene 7 analyzing is done 
by QueryParser
               case "QueryParser":
                   qp = new QueryParser(docDef.getPrimaryField(), analyzer);
               }
           }
           qp.setAllowLeadingWildcard(true);
           query = qp.parse(queryString);
           return query ;
   ```
   
   

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