objecttag: Make the max length of the tag values configurable (defaul…

[psaiz]

…t to 255)

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Description

For Open Data, we store the 'cold' url of files as an object tag. Some of the uri are longer than 255, so it would be nice to set the limit as a parameter that can be tuned by the different instances.

[utnapischtim]

which uri column is used to store the configurable value?

• invenio-files-rest/invenio_files_rest/models.py

  Line 273 in 400a34f

  uri = db.Column(db.String(255), nullable=False)

• invenio-files-rest/invenio_files_rest/models.py

  Line 686 in 400a34f

  uri = db.Column(

i am asking because i think only the second can store an character string greater then 255 characters