The DAF.Search.Base module includes a /atg/search/formhandlers/QueryFormHandler component and a corresponding request component, /atg/search/routing/command/search/QueryRequest. The DCS.Search.Query module adds QueryFormHandler and QueryRequest components that are preconfigured for querying the Oracle ATG Web Commerce product catalog. These components are found in the /atg/commerce/search/catalog Nucleus folder. You can use these components for creating search forms and displaying facets on commerce sites.