zoom: honor piggyback setting

Makes some SRU targets behave that insist on maximumRecords > 0,
but also increases performance.

diff --git a/src/filter_zoom.cpp b/src/filter_zoom.cpp
index 1c2ff9a..8d623d4 100644 (file)
--- a/src/filter_zoom.cpp
+++ b/src/filter_zoom.cpp
@@ -738,6 +738,9 @@ yf::Zoom::BackendPtr yf::Zoom::Frontend::get_backend_from_databases(
     if (m_p->apdu_log) 
         b->set_option("apdulog", "1");
 
+    if (sptr->piggyback)
+        b->set_option("count", "10");
+
     std::string authentication = sptr->authentication;
     std::string proxy = sptr->cfProxy;