readme.md

In this before insert or update Business Rule, we are fetching a reference field value from higher-level parents in hierarchy when there is a field containing the parent record in the children and our use-case reference field is present in all the tables in hierarchy.

Author: Soumyadeep10

Business Rules/Fetching reference field value from higher-level parents/readme.md

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+This is a "**before insert/update**" Business Rule
+We are fetching a reference field value from higher-level parents in hierarchy 
+when there is a field containing the parent record in the children and 
+our use-case reference field is present in all the tables in hierarchy
+
+In the code, we are referring to "reference field name we want to populate" as "_r1_"
+In the code, we are referring to "reference field containing parent record" as "_parent_"
+
+The "**JSUtil.nil**" is being used to check for empty/null value for the field.
+
+
+Through the code we are checking the empty value of the use-case reference field and dot walking to parents and fetching the value from them if it exists