Add a text query as a child of this IPTSBooleanQuery. Convenience method that is equivalent to calling IPTSearchFactory.createTextQuery and then calling the IPTSQuery form of addSubquery. 
PTSFieldType.STRING. Use the field returned by IPTSSearchableCollection.TextQueryDefault to search the default set of fields.queryString. See class PTSTextQueryParseMode.IPTSBooleanQuery Interface | com.plumtree.server.search Namespace | IPTSBooleanQuery.addSubquery Overload List