Changes in Trigger Firing

Hi all,

I am doing some changes in trigger firing mechanism (as a POC first, I will share my work if people find it useful and if it works). 

I am going to extend the trigger calls to child tables. So that in trigger definition I can create triggers with CASCADED TRUE | FALSE option.

This will enable me to extend certain triggers to child tables and get over the scenarios when a record gets inserted in child table and any *after insert* triggers on parent tables never get fired.

I am right now trying to change pg_trigger and CreateTrigger function. I have made changes in below files:

trigger.c:

     - Added a New Variable cascadedOption (bool)

     - Added a new statement in trigger.c to set the value:

                 values[Anum_pg_trigger_tgiscascaded - 1] = BoolGetDatum(stmt->cascadedOption);

     -  Added a new column in CATALOG definition of pg_trigger in pg_trigger.h 

     -  In pg_trigger.h, added a new position for values 

            #define Anum_pg_trigger_tgiscascaded    16

     - Modified parsenode.h to add a new element in Structure for trigger statement -CreateTrigStmt

                 bool        cascadedOption;

CreateTrigStmt is passed to CreateTrigger function as an arguement. I am struggling to understand how the values for various members of trigger are set and where [which file] calls CreateTrigStmt.

Can someone provide some help on this?