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Add ident field to sys_file_metadata
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Usage of ident field
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In DAM in TYPO3 4.5 there was a ident field for media. This field is identifier for a object or media in real live.

https://en.wikipedia.org/wiki/Identifier


Migrate tx_dam.ident to sys_file_metadata.ident
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This only works, if you used the extension "dam_falmigration" for migration and the tx_dam is still present

sql::

    UPDATE sys_file_metadata,sys_file,tx_dam SET sys_file_metadata.ident=tx_dam.ident  WHERE sys_file._migrateddamuid=tx_dam.uid AND sys_file_metadata.file=sys_file.uid


Tools
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zip this extension:

    zip -r ../taywa_filemetadata_ident_0.0.11.zip *