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spring-batch-generic-bulk's Introduction

Description

  • Read csv file with large number of columns
  • Insert into a table
  • Read the table

The goal is to have the fields declared only once, in the pojo (Student.java). No sql file (the table should be create by the application if not exists)

Version

  • V1: generic write with introspection, sql file, no read, no jpa
  • V2: use jpa to create data in the table (in memory)
  • V3: insert in postgres
  • V4: use lib 'opencsv' to read csv into pojo

Launching

Run Application

Legacy: How the pojo was created the first time

get column name from csv & replace 'tab' with '\n'
create column name in notepadd++, then apply regex
search: (é)|(\/)|(è)|(ô)|(à)|(d')|(\))|(^\w)|[^\w\n]+(\w)
replaceby: (?1e)(?2)(?3e)(?4o)(?5a)(?6)(?6)(?8\L$8)(?9\U$9)
some manual cleanup

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