The search mode of each search request.

SEARCH_MODE_UNSPECIFIED Default value. In this case both product search and faceted search will be performed. Both SearchResponse.SearchResult and SearchResponse.Facet will be returned.

Only product search will be performed. The faceted search will be disabled.

Only SearchResponse.SearchResult will be returned. SearchResponse.Facet will not be returned, even if SearchRequest.facet_specs or SearchRequest.dynamic_facet_spec is set.


Only faceted search will be performed. The product search will be disabled.

When in this mode, one or both of SearchRequest.facet_specs and SearchRequest.dynamic_facet_spec should be set. Otherwise, an INVALID_ARGUMENT error is returned. Only SearchResponse.Facet will be returned. SearchResponse.SearchResult will not be returned.