Add additional properties for debugging, with comments

Author: jloux-brapi

src/main/resources/application.properties.template

@@ -12,11 +12,20 @@ spring.flyway.baselineOnMigrate=true
 
 spring.datasource.driver-class-name=org.postgresql.Driver
 
+# This property when set to true makes it so that a DB transaction is open through the body of a request, nullifying the use of @Transactional.
+# It is generally recommended that this be set to false, and methods are properly annotated and release the transactions when complete.
+# However, many of the endpoints already rely on this kind of connection infrastructure and changing is more trouble than it's worth.
+spring.jpa.open-in-view=true
+
 spring.jpa.properties.hibernate.jdbc.batch_size=50
 spring.jpa.properties.hibernate.order_inserts=true
 spring.jpa.properties.hibernate.order_updates=true
 spring.jpa.hibernate.ddl-auto=validate
+
+# Use these to help debug queries.
+# The stats will tell you how long hibernate transactions are taking, how many queries occur, how many entities are being flushed/accessed, etc.
 spring.jpa.show-sql=false
+spring.jpa.properties.hibernate.generate_statistics=false
 
 spring.mvc.dispatch-options-request=true