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PURLS

Chaining Form 1 of 2

Concepts

When you chain an existing PURL, a new PURL is created and the new PURL's associated URL is set to the URL of the existing PURL. The existing PURL's URL is then set to the new PURL. Here is an example:

Suppose that you maintain the PURL http://purl.oclc.org/NET/BAR, that its associated URL is http://www.foobar.com, and that you want to chain the PURL http://purl.oclc.org/NET/BAR to http://purl.oclc.org/NET/FOO. The new PURL http://purl.oclc.org/NET/FOO would be created and its URL would be set to http://www.foobar.com. Then the existing PURL http://purl.oclc.org/NET/BAR would have its URL set to http://purl.oclc.org/NET/FOO.

Now the new PURL http://purl.oclc.org/NET/FOO can be used and edited as if it were the only PURL and the old PURL http://purl.oclc.org/NET/BAR will continue to work and point to the current information (via the new PURL).

Instructions

First, specify the registered user ID of an authorized maintainer of the PURLs to be modified and the Password of that ID.

ID         required
Password   required, case sensitive

Next, if you know the exact PURL you want to chain, enter it in the PURL field, leave the other fields below blank, and select the Continue button. Otherwise, to help identify your target PURL, you can enter a string to search for in any of the fields below and then select the Continue button in order to get a list of matching PURLs to choose from.

The search input fields are used as follows:

PURL: this input will be used to match the name part of PURLs on this resolver. For example, in the fictitious PURL http://purl.org/hello/there, "/hello/there" is the name part. Since the prefix http://purl.oclc.org is implicit in each PURL on this resolver and is outside the name part, it should not be entered in the PURL field.
URL: this input will be used to match any part of any URL associated with a PURL on this resolver. All parts of the URL are significant and can be entered to help limit the search.
Maintainer: this input will be used to search for a registered user ID or group ID that is a PURL maintainer on this resolver and exactly matches this string. Since a PURL's maintainers access control list can include group IDs, matches against this input field are determined by recursively expanding any such group IDs into a list of their members' IDs and then matching against all IDs in the fully expanded list. For example, if BOB is a member of the group TALL and TALL is the sole maintainer of the PURL duck-when-entering, then BOB will match as a maintainer of duck-when-entering. Thus, entering BOB in the Maintainer field would match the PURL duck-when-entering. Large group expansions can take a long time to compute!
Explicit Maintainer: this input will be used to search for a registered user ID or group ID that is an explicitly named PURL maintainer on this resolver and exactly matches this string. This match is NOT done recursively like that done for the Maintainer field above. Instead, the input will only match an ID that appears explicitly in the maintainers access control list of a PURL. Using the example above, entering BOB in the Explicit Maintainer field would NOT match the PURL duck-when-entering.
Nonempty fields are "ANDed" together.
Empty fields are not used in the search.

PURL                 
URL                  case sensitive
Maintainer           expands groups
Explicit Maintainer  does not expand groups

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PURLS

Chaining Form 1 of 2

Concepts

Instructions