Many Tags are not marked as "Binary", even so they are - same to other types

[SimonSimCity]

I found out, that there are many tags in the system, that actually are binary, but not marked as one.

One example is: https://github.com/romainneutron/PHPExiftool/blame/master/lib/PHPExiftool/Driver/Tag/Canon/ThumbnailImage.php

Don't know if this is the responsibility of Exiftool or if it has do do something with the class-creator task ...

[SimonSimCity]

This is, because ClassesBuilder:getTypeMap() treats the following types as string:

• ?
• unknown
• undef
• Unknown

What about treating them as binary, because we for sure don't know what it's content is?
The description for "undef" at least is: "Undefined-format binary data", so it should be binary, right?
http://trac.greenstone.org/browser/main/trunk/greenstone2/perllib/cpan/Image/ExifTool/README

[SimonSimCity]

I now found, that "double" is marked as "int", even so it's a "float" ... Please update the list according to the ReadMe!

[romainneutron]

If you can push a PR, it would be awesome, otherwise I'll check this this week end

[SimonSimCity]

I looked through the code ... Do you know something about the flag_Binary? Is this set for these items, or where will this be done?

[SimonSimCity]

See #13

[SimonSimCity]

Where are these types actually used? Or - are they used at all?

My problem is, that I want to serialize all mono and multiple data and save it to the database. Binary data is useless there, because it's not searchable.

The binary-flag is triggered by the is_Binary flag in the XML given by Exiftool ...

[romainneutron]

These type should help to cast values from RDF, but it is actually not yet implemented.

[romainneutron]

Have you notices that TagInterface supports serialization via JMS Serializer ?

[SimonSimCity]

Nope - haven't noticed that ... but that doesn't change the fact, that I still will have binary data in there.

Btw: All serialization I need is handled by the database I use, so I shouldn't have to care about that. The database now is coupled directly to a search-engine, which I don't want to feed with useless data like f.e. some preview-images ;)