Image Class Access Control Summary and Examples Table

Image Services
Digital Library Production Service
University of Michigan
Digital Library eXtension Service
dlxs-help@umich.edu

It is important to also read the following documentation:

The following table represents all of the possible combinations of access control.

Descriptive Data

Thumbnail Images

Images (larger than thumbnail)

CollMgr entryauth field or Collection Info Field 3 Value

Entry Auth Field (DLXS_ea) Needed In Record(1)

Environment Variable (add collid to this var)

Unrestricted Access

Unrestricted Access

Unrestricted Access

WORLD

No

PUBLIC_COLL

Unrestricted Access

Unrestricted Access

Restricted

COLLID

No

PUBLIC_COLL

Unrestricted Access

Unrestricted Access

Mixed

COLLID (this will be overridden by values found in the records Entry Auth Field (DLXS_ea).

Yes

Value of field mapped to DLXS_ea must be "WORLD" for records with images (larger than thumbnail) that should not be restricted.

Value of field mapped to DLXS_ea must be "No Access" for records with images (larger than thumbnail) that should not be viewable by anyone.

Other values will result in restricted access for the records images (larger than thumbnail).

PUBLIC_COLL

Restricted

Restricted

Mixed

COLLID (this will be overridden by values found in the records Entry Auth Field (DLXS_ea).

Yes

Value of field mapped to DLXS_ea must be "No Access" for records with images (larger than thumbnail) that should not be viewable by anyone.

Other values will results in the image being restricted to authorized users (larger than thumbnail).

AUTHZD_COLL

Restricted(2)

Restricted

Restricted

COLLID

No

AUTHZD_COLL

Unrestricted Unrestricted No Access No Access No PUBLIC_COLL
Restricted Restricted No Access No Access No AUTHZD_COLL

(1) Meaning, there needs to be a field in each source data record.

(2) Restricted in all cases means restricted to authorized users.