Added the ability to get the last run query in R

R/Database.R

@@ -231,3 +231,9 @@ modb_use <- function(modb_name, override = FALSE, ...) {
   res <- .Call(c_rmodb_use, conn_ref, modb_name, as.logical(override))
   return(res)
 }
+
+modb_get_last_query <- function(...) {
+  conn_ref <- modb_conn_ref(args = list(...))
+  res <- .Call(c_rmodb_getLastQuery, conn_ref)
+  return(res)
+}

src/R_modb_manage.c

@@ -236,3 +236,20 @@ SEXP rmodb_use(SEXP r_conn_ref, SEXP r_name, SEXP r_override)
 
   return Rf_ScalarLogical(TRUE);
 }
+
+
+SEXP rmodb_getLastQuery(SEXP r_conn_ref)
+{
+  stored_conn *sconn;
+  SEXP r_res;
+
+  if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
+    Rf_error("invalid connection reference\n");
+  }
+
+  r_res = Rf_allocVector(STRSXP, 1);
+  SET_STRING_ELT(r_res, 0, PROTECT(Rf_mkCharLen(sconn->last_qry, (int)sconn->last_qry_len)));
+
+  UNPROTECT(2);
+  return r_res;
+}

src/R_modb_manage.h

@@ -24,4 +24,6 @@ SEXP rmodb_destroy(SEXP r_conn_ref, SEXP r_name);
 SEXP rmodb_use(SEXP r_conn_ref, SEXP r_name, SEXP r_override);
 
 
+SEXP rmodb_getLastQuery(SEXP r_conn_ref);
+
 #endif // H__R_MODB_MANAGE__