LocalDateToDateConverter converts to wrong values (for very old dates)

[cdir]

The LocalDateToDateConverter in vaadin 8.3.1 converts the value too naive.

Depending on the current time zone there might be some time gabs because of different calendar adjustments. For example in TimeZone "Europe/Berlin" there was a time gab of 0:06:32h on April 1st 1893. (https://www.timeanddate.com/time/zone/germany/berlin?year=1893). That means: If you enter a LocalDate of 1893-04-01 it is converted to Date 1893-04-04 00:06:32.

Further time gab of several days was on 1582-10-15 (Julian Calendar to Gregorian Calendar).

A quite good explanation and a hint for correct conversion is given on https://stackoverflow.com/questions/44801189/how-to-convert-util-date-to-time-localdate-correctly-for-dates-before-1893/44802513

[stale[bot]]

Hello there!

It looks like this issue hasn't progressed lately. There are so many issues that we just can't deal them all within a reasonable timeframe.

There are a couple of things you could help to get things rolling on this issue (this is an automated message, so expect that some of these are already in use):

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[scardanzan]

This is related to JDK-8061577 and that is marked as won't fix. Its probably not great to have behavior beyond the standard implementation on general converters. If you need to handle those special cases you can create your own converter.

[stale[bot]]

Hello there!

We are sorry that this issue hasn't progressed lately. We are prioritizing issues by severity and the number of customers we expect are experiencing this and haven't gotten around to fix this issue yet.

There are a couple of things you could help to get things rolling on this issue (this is an automated message, so expect that some of these are already in use):

• Check if the issue is still valid for the latest version. There are dozens of duplicates in our issue tracker, so it is possible that the issue is already tackled. If it appears to be fixed, close the issue, otherwise report to the issue that it is still valid.
• Provide more details how to reproduce the issue.
• Explain why it is important to get this issue fixed and politely draw others attention to it e.g. via the forum or social media.
• Add a reduced test case about the issue, so it is easier for somebody to start working on a solution.
• Try fixing the issue yourself and create a pull request that contains the test case and/or a fix for it. Handling the pull requests is the top priority for the core team.
• If the issue is clearly a bug, use the Warranty in your Vaadin subscription to raise its priority.

Thanks again for your contributions! Even though we haven't been able to get this issue fixed, we hope you to report your findings and enhancement ideas in the future too!