DO NOT REPLY [Bug 32115] - [PATCH] add boost feature to MultiFieldQueryParser

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http://issues.apache.org/bugzilla/show_bug.cgi?id=32115





------- Additional Comments From [EMAIL PROTECTED]  2005-05-15 19:40 -------
Created an attachment (id=15037)
 --> (http://issues.apache.org/bugzilla/attachment.cgi?id=15037&action=view)
Added multifield selective boost functionality to MultiFieldQueryParser class.


The attachment includes the changes made in the attachment 15036 for bug 33848.


Here is the unit test I used:

                String[] fields=new String[]{"f1","f2","f3","f4","f5"};
                
                HashMap boostMap=new HashMap();
                boostMap.put("f2",new Float(1.2));
                boostMap.put("f3",new Float(1.3));
                
                MultiFieldQueryParser parser=new
MultiFieldQueryParser(fields,new TestAnalyzer(fields));
                parser.setBoostMap(boostMap);
                String qString="bla AND blo";
        
                Query q=parser.parse(qString);
                //Query q=QueryParser.parse(qString,"f1",new
TestAnalyzer(fields));
                //Query q=MultiFieldQueryParser.parse(qString,fields,new
TestAnalyzer(fields));
                System.out.println(q);
        }

        static class TestAnalyzer extends Analyzer{
                String[] _defaultFields;
                StandardAnalyzer _std;
                public TestAnalyzer(String[] defaultFields){
                        _defaultFields=defaultFields;
                        _std=new StandardAnalyzer();
                }
                public TokenStream tokenStream(String fieldName, Reader reader)
{
                        if ("f1".equals(fieldName)){
                                return new EmptyTokenStream();
                        }
                        else{
                                return _std.tokenStream(fieldName, reader);
                        }
                }
                
                private static class EmptyTokenStream extends TokenStream{

                        public Token next() throws IOException {
                                return null;
                        }
                        
                }
        }


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