#47 Add iterate method to CsvToBean

[Clement Cunin]

Currently, CsvToBean has only a method that reads all lines of csv and returns a list.
This patch add a new method that takes same parameters than parse, but returns an iterator.

This method allows to use CsvToBean on large file without consume too many memory.

[Clement Cunin]

[george]

Hi I'm also in need of the iterator function, is there any chance this patch will ever make it into the next version? CsvToBean works great, but when we have very large files, it would be much better if we could iterate line by line rather than throwing everything into a list.

[Scott Conway]

I will look at your patch later this week. This part of the year is hectic
with work/kids/school/scouts so I cannot give an ETA on 3.5 openCSV.

Plus I am getting murdered with the CSVReader isClosed issue: it is either
failing for people who use nio libraries or it is failing for people using
the standard stream reader - I cannot find a solution that will work for
both. That has the highest priority right now.

On Mon, Jul 27, 2015 at 8:14 AM, george gchristman@users.sf.net wrote:

Hi I'm also in need of the iterator function, is there any chance this
patch will ever make it into the next version? CsvToBean works great, but
when we have very large files, it would be much better if we could iterate
line by line rather than throwing everything into a list.

---

• [patches:#47] http://sourceforge.net/p/opencsv/patches/47 Add iterate
  method to CsvToBean*

Status: open
Group:
Labels: new functionality
Created: Tue Feb 19, 2013 03:08 PM UTC by Clement Cunin
Last Updated: Tue Feb 19, 2013 03:08 PM UTC
Owner: nobody

Currently, CsvToBean has only a method that reads all lines of csv and
returns a list.
This patch add a new method that takes same parameters than parse, but
returns an iterator.

This method allows to use CsvToBean on large file without consume too many
memory.

---

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https://sourceforge.net/p/opencsv/patches/47/

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--
Scott Conway
scott.conway@gmail.com
http://www.conwayfamily.name

[george]

I'm currently using my own implementation of CsvToBean with the patch and
it appears to work flawlessly. It should be a simple 5min patch for you.
Thank you so much for all your hard work.
On Jul 27, 2015 12:44 PM, "Scott Conway" sconway@users.sf.net wrote:

I will look at your patch later this week. This part of the year is hectic
with work/kids/school/scouts so I cannot give an ETA on 3.5 openCSV.

Plus I am getting murdered with the CSVReader isClosed issue: it is either
failing for people who use nio libraries or it is failing for people using
the standard stream reader - I cannot find a solution that will work for
both. That has the highest priority right now.

On Mon, Jul 27, 2015 at 8:14 AM, george gchristman@users.sf.net wrote:

Hi I'm also in need of the iterator function, is there any chance this
patch will ever make it into the next version? CsvToBean works great, but
when we have very large files, it would be much better if we could iterate
line by line rather than throwing everything into a list.

---

• [patches:#47] http://sourceforge.net/p/opencsv/patches/47
  http://sourceforge.net/p/opencsv/patches/47 Add iterate
  method to CsvToBean*

Status: open
Group:
Labels: new functionality
Created: Tue Feb 19, 2013 03:08 PM UTC by Clement Cunin
Last Updated: Tue Feb 19, 2013 03:08 PM UTC
Owner: nobody

Currently, CsvToBean has only a method that reads all lines of csv and
returns a list.
This patch add a new method that takes same parameters than parse, but
returns an iterator.

This method allows to use CsvToBean on large file without consume too many
memory.

---

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/opencsv/patches/47/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/

--
Scott Conway
scott.conway@gmail.com
http://www.conwayfamily.name

---

• [patches:#47] http://sourceforge.net/p/opencsv/patches/47 Add iterate
  method to CsvToBean*

Status: open
Group:
Labels: new functionality
Created: Tue Feb 19, 2013 03:08 PM UTC by Clement Cunin
Last Updated: Mon Jul 27, 2015 01:14 PM UTC
Owner: nobody

Currently, CsvToBean has only a method that reads all lines of csv and
returns a list.
This patch add a new method that takes same parameters than parse, but
returns an iterator.

This method allows to use CsvToBean on large file without consume too many
memory.

---

Sent from sourceforge.net because you indicated interest in
https://sourceforge.net/p/opencsv/patches/47/

To unsubscribe from further messages, please visit
https://sourceforge.net/auth/subscriptions/

[Andrew Rucker Jones]

It appears to me this need has long since been met by IterableCSVToBean. It iterates, and it works on a line-by-line basis instead of reading everything into memory at once. I'm closing this ticket. If I am mistaken, simply post a comment to this ticket and I will reopen it and examine it.