public class QueryResultTableBuilder
QueryResutlTableBuilder is class to build xml_queryresult table during metacat initialization.
xml_querytable is a db table to store query returnfiled value. It is a cache of resultset and
peformance optimization approach to replace xml_index and xml_node tables. In metacat 1.8.0,
xml_queryresult table is built during the first time of query hitting metacat. So first time search
will take longer time since this search involves xml_index and xml_node tables. In order to
decrease the first query search time, this class will build the xml_querytable during the metacat
intialization base on some metacat common clients' query , e.g. kepler, morpho, esa, knb, nceas,