Add hfta-only FIRST udaf

[com/gs-lite.git] / src / lib / gscphftaaux / hfta_udaf.cc

diff --git a/src/lib/gscphftaaux/hfta_udaf.cc b/src/lib/gscphftaaux/hfta_udaf.cc
index ad26871..0660739 100644 (file)
--- a/src/lib/gscphftaaux/hfta_udaf.cc
+++ b/src/lib/gscphftaaux/hfta_udaf.cc
@@ -272,6 +272,64 @@ gs_float_t extr_avg_fcn(vstring *v){
 
 /////////////////////////////////////////////////////////
 //             FIRST aggregate
+// hfta only
+
+void FIRST_HFTA_AGGR_INIT_(gs_uint32_t* scratch) {
+       *scratch = UINT_MAX;            // we will encode uninitialized value of UINT_MAX
+}
+
+void FIRST_HFTA_AGGR_REINIT_(gs_uint32_t* scratch) { }
+
+void FIRST_HFTA_AGGR_UPDATE_(gs_uint32_t* scratch, gs_uint32_t val) {
+       if (*scratch == UINT_MAX)
+               *scratch = val;
+}
+
+void FIRST_HFTA_AGGR_OUTPUT_(gs_uint32_t* res, gs_uint32_t* scratch) {
+       *res = *scratch;
+}
+
+void FIRST_HFTA_AGGR_DESTROY_(gs_uint32_t* scratch) { }
+
+void FIRST_ULL_HFTA_AGGR_INIT_(gs_uint64_t* scratch) {
+       *scratch = UINT_MAX;            // we will encode uninitialized value of UINT_MAX
+}
+
+void FIRST_ULL_HFTA_AGGR_REINIT_(gs_uint64_t* scratch) { }
+
+void FIRST_ULL_HFTA_AGGR_UPDATE_(gs_uint64_t* scratch, gs_uint64_t val) {
+       if (*scratch == UINT_MAX)
+               *scratch = val;
+}
+
+void FIRST_ULL_HFTA_AGGR_OUTPUT_(gs_uint64_t* res, gs_uint64_t* scratch) {
+       *res = *scratch;
+}
+
+void FIRST_ULL_HFTA_AGGR_DESTROY_(gs_uint64_t* scratch) { }
+
+
+void FIRST_STR_HFTA_AGGR_INIT_(vstring* scratch) {
+       scratch->offset= 0;
+}
+
+void FIRST_STR_HFTA_AGGR_REINIT_(vstring* scratch) { }
+
+void FIRST_STR_HFTA_AGGR_UPDATE_(vstring* scratch, vstring* val) {
+       if (!scratch->offset) {
+    scratch->length = val->length;
+    scratch->offset = val->offset;
+    scratch->reserved = SHALLOW_COPY;
+       }
+}
+
+void FIRST_STR_HFTA_AGGR_OUTPUT_(vstring* res, vstring* scratch) {
+       *res = *scratch;
+}
+
+void FIRST_STR_HFTA_AGGR_DESTROY_(vstring* scratch) { }
+
+// hfta/lfta split
 
 void FIRST_hfta_HFTA_AGGR_INIT_(gs_uint32_t* scratch) {
        *scratch = UINT_MAX;            // we will encode uninitialized value of UINT_MAX
@@ -328,6 +386,7 @@ void FIRST_STR_hfta_HFTA_AGGR_OUTPUT_(vstring* res, vstring* scratch) {
 
 void FIRST_STR_hfta_HFTA_AGGR_DESTROY_(vstring* scratch) { }
 
+
 /////////////////////////////////////////////////////////
 //             LAST aggregate