I'm trying to use the bf parameter to boost a dismax query based on the value of a certain (integer) field. The trouble is that for some of the documents this field is empty (rather than zero), which means that there's an error when using the bf parameter:
----- select?q=query+string&qf=body&qt=dismax&bf=intfield ----- java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) at java.lang.Integer.parseInt(Integer.java:468) at java.lang.Integer.parseInt(Integer.java:497) at org.apache.lucene.search.FieldCacheImpl$3.parseInt(FieldCacheImpl.java:148) at org.apache.lucene.search.FieldCacheImpl$7.createValue(FieldCacheImpl.java:261) at org.apache.lucene.search.FieldCacheImpl$Cache.get(FieldCacheImpl.java:72) at org.apache.lucene.search.FieldCacheImpl.getInts(FieldCacheImpl.java:244) at org.apache.lucene.search.FieldCacheImpl.getInts(FieldCacheImpl.java:238) at org.apache.solr.search.function.IntFieldSource.getValues(IntFieldSource.java:50) at org.apache.solr.search.function.FunctionQuery$AllScorer.<init>(FunctionQuery.java:103) at org.apache.solr.search.function.FunctionQuery$FunctionWeight.scorer(FunctionQuery.java:81) at org.apache.lucene.search.BooleanQuery$BooleanWeight.scorer(BooleanQuery.java:233) at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:143) at org.apache.lucene.search.Searcher.search(Searcher.java:118) at org.apache.lucene.search.Searcher.search(Searcher.java:97) at org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:894) at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:810) at org.apache.solr.search.SolrIndexSearcher.getDocList(SolrIndexSearcher.java:701) at org.apache.solr.handler.DisMaxRequestHandler.handleRequestBody(DisMaxRequestHandler.java:319) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:78) at org.apache.solr.core.SolrCore.execute(SolrCore.java:811) at org.apache.solr.servlet.SolrServlet.doGet(SolrServlet.java:64) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:200) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) ----- Is there a way round this? alf