multiple select box parameter passing to jsp page causes error

[jitender ahuja <aj...@aalayance.com>]

Hi all,

        I am developing a html page in which there is a multiple selection box taht indicates the Indexed fields to be searched upon. Also, it has as the default option the All Fields option.
Now, some fields (options) are allowed to be selected in combination.This means that the parameter to be passed to the relevant jsp page must have that combination as a whole to select upon only the desired fields for the existence of the query term(s).
Now, the parameter for this multiple selection scenario is passed multiple times(same as number of the options selected) to the jsp page and causes error that is summarised below:

 java.lang.NullPointerException
at org.apache.lucene.index.Term.(Term.java:36)
at org.apache.lucene.index.Term.(Term.java:33)
at org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:253)
at org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:638)
at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:537)
at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:480)
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:108)
at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:87)
at org.apache.lucene.queryParser.MultiFieldQueryParser.parse(MultiFieldQueryParser.java:77)
at org.apache.jsp.outputjsp_jsp._jspService(output_jsp.java:290)

The  file,  output_jsp.java has the following code lines at line numbers  289, 290  that deal with the number of options selected being represented in the "size" variable
289:else if (size != 1){                                                                 // if multiple(>1) options are selected
290:             query = MultiFieldQueryParser.parse(queryString, fields1, analyzer); //parse the query
         }


Regards,
Jitender