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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=24265 MultiFieldQueryParser, can't change default search operator Summary: MultiFieldQueryParser, can't change default search operator Product: Lucene Version: 1.0.2 Platform: Other OS/Version: Linux Status: NEW Severity: Normal Priority: Other Component: QueryParser AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Bug detected by Bernhard, submitted via Christoph bug occured with 1.3 rc2 just played around with the MultiFieldQueryParser and didn't find a working way to change the "operator" value. The problem is that MultiFieldQueryParser is implementing two public static methods "parse" only. Calling one of those, in the extended superclass, the static method implementation for "parse" is called. Due to the fact that the QueryParser class creates a new Instance for each call thru the static method, the "operator" flag is simply ignored. There would be a simple fix within MultiFieldQueryParser class without touching the rest of the system. One have to add a new non static method "parse" which could look like this: /***********************************************************/ public Query parse(String query, String[] fields) throws ParseException { BooleanQuery bQuery = new BooleanQuery(); for (int i = 0; i < fields.length; i++) { QueryParser parser = new QueryParser(fields[i], analyzer); parser.setOperator(getOperator()); Query q = parser.parse(query); bQuery.add(q, false, false); } return bQuery; } /***********************************************************/ To test the new implementation, following code fragment can be used: /***********************************************************/ Directory directory = FSDirectory.getDirectory("/tmp/idx-test", false); Analyzer analyzer = new SimpleAnalyzer(); Searcher searcher = new IndexSearcher(directory); Hits hits = null; String[] fields = { "contents", "title" }; MultiFieldQueryParser parser = new MultiFieldQueryParser("britney spears", analyzer); parser.setOperator(QueryParser.DEFAULT_OPERATOR_AND); Query query = parser.parse("britney spears", fields); System.out.println("Query: " + query.toString()); hits = searcher.search(query); System.out.println ("Results: " + hits.length()); searcher.close(); /***********************************************************/ best regards Bernhard --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
