String-to-UUID Converter.

[basil-bourque]

[This Issue parallels one posted for Vaadin 8 Framework, Issue # 11,051.]

Vaadin 8 Framework offers several handy implementations of Converter such as StringToBooleanConverter and StringToIntegerConverter.

I suggest adding another for the common type java.util.UUID for Universally unique identifier (UUID) values. UUID values are common in enterprise apps for generating identifiers without needing a central registration authority.

The 128 bits of a UUID are canonically presented as five groups of hexadecimal digits separated by a hyphen, such as ab664df2-8859-11e8-9a94-a6cf71072f73, as discussed in Wikipedia, the java.util.UUID::toString JavaDoc, and the RFC 4122 spec.

The implementation is utterly simple, with only two core lines of code:

String s = myUuid.toString() ;

and

UUID myUuid = UUID.fromString( s ) ;

Attached is a single StringToUuidConverter.java.txt file, my take on an implementation. (GitHub would not accept .java, so I appended .txt to the file name.)

StringToUuidConverter.java.txt

[stbischof]

Hi, a bit more complex but more powerful.
Using OSGI-Converter for all convertation.

https://blog.osgi.org/2018/04/osgi-r7-highlights-converter.html