feat(regex): backend validations on regex strings

sas/sasjs/db/migrations/20260720_v7.11_release.sas

@@ -0,0 +1,37 @@
+/**
+  @file
+  @brief migration script to move to v7.11 of Data Controller
+
+  OPTIONAL CHANGE - upload additional validation rules (HARDREGEX, SOFTREGEX)
+  into the RULE_TYPE dropdown (data only)
+
+**/
+
+%let dclib=YOURDCLIB;
+
+libname &dclib "/YOUR/DATACONTROLLER/LIBRARY/PATH";
+
+
+/* add new validation rules */
+proc sql noprint;
+select max(selectbox_rk) into: maxrk
+  from &dclib..mpe_selectbox;
+insert into &dclib..mpe_selectbox set
+    selectbox_rk=&maxrk+1
+    ,ver_from_dttm=0
+    ,select_lib="&dclib"
+    ,select_ds="MPE_VALIDATIONS"
+    ,base_column="RULE_TYPE"
+    ,selectbox_value='HARDREGEX'
+    ,selectbox_order=13
+    ,ver_to_dttm='31DEC5999:23:59:59'dt;
+insert into &dclib..mpe_selectbox set
+    selectbox_rk=&maxrk+2
+    ,ver_from_dttm=0
+    ,select_lib="&dclib"
+    ,select_ds="MPE_VALIDATIONS"
+    ,base_column="RULE_TYPE"
+    ,selectbox_value='SOFTREGEX'
+    ,selectbox_order=14
+    ,ver_to_dttm='31DEC5999:23:59:59'dt;
+quit;

sas/sasjs/macros/mpe_makedata.sas

@@ -916,6 +916,24 @@ insert into &lib..mpe_selectbox set
       ,selectbox_value="SOFTSELECT_HOOK"
       ,selectbox_order=12
       ,ver_to_dttm='31DEC5999:23:59:59'dt;
+  insert into &lib..mpe_selectbox set
+      selectbox_rk=%mf_increment(rk)
+      ,ver_from_dttm=0
+      ,select_lib="&lib"
+      ,select_ds="MPE_VALIDATIONS"
+      ,base_column="RULE_TYPE"
+      ,selectbox_value="HARDREGEX"
+      ,selectbox_order=13
+      ,ver_to_dttm='31DEC5999:23:59:59'dt;
+  insert into &lib..mpe_selectbox set
+      selectbox_rk=%mf_increment(rk)
+      ,ver_from_dttm=0
+      ,select_lib="&lib"
+      ,select_ds="MPE_VALIDATIONS"
+      ,base_column="RULE_TYPE"
+      ,selectbox_value="SOFTREGEX"
+      ,selectbox_order=14
+      ,ver_to_dttm='31DEC5999:23:59:59'dt;
   insert into &lib..mpe_selectbox set
       selectbox_rk=%mf_increment(rk)
       ,ver_from_dttm=0

sas/sasjs/services/hooks/mpe_validations_postedit.sas

@@ -70,3 +70,38 @@ run;
   ,msg=%str(The following vars have duplicate HOOKS:  &src_list2)
 )
 
+
+/** check that any supplied HARDREGEX / SOFTREGEX rules contain a valid
+    regex pattern.  The frontend evaluates these as JavaScript regexes
+    (invalid ones are silently ignored there), so prxparse is used here as
+    a best-effort syntax check to catch typos at config time.
+    An empty pattern is treated as valid (matches everything in JS). */
+data work.regex_check;
+  length source $74;
+  set work.staging_ds(
+    where=(rule_type in ('HARDREGEX','SOFTREGEX')
+      and upcase(_____DELETE__THIS__RECORD_____) ne "YES")
+  );
+  keep source rule_value;
+  if rule_value ne ' ' then do;
+    rx=prxparse(strip(rule_value));
+    if missing(rx) then do;
+      source=catx('.',base_lib,base_ds,base_col);
+      output;
+    end;
+    else call prxfree(rx);
+  end;
+run;
+
+%global src_list3;
+%let src_list3='';
+proc sql noprint;
+select distinct quote(cats(source)) into: src_list3 separated by ','
+  from work.regex_check;
+quit;
+
+%mp_abort(iftrue= (%mf_nobs(work.regex_check)>0)
+  ,mac=mpe_validations_postedit
+  ,msg=%str(The following vars have invalid REGEX patterns:  &src_list3)
+)
+