Enable linking between records if 773$w or 774$w have OCLC numbers

[mzelesky]

Stakeholder: Cathy Weng

If there is a 773$w with an OCLC number, the title in the "In" section should link to the record that contains that OCLC number instead of just providing the title, provided the OCLC number exists in the catalog.

Similarly, if there is a 774$w field with an OCLC number, the title(s) in the "Contains" section should link to the record instead of just providing titles, provided the OCLC number exists in the catalog.

However, inventory should not be shared from a host record. This is a difference from existing 773/774 MMS ID functionality.

Example:
https://catalog.princeton.edu/catalog/9947622063506421

The 773 field has (OCoLC)28904433 in $w. This corresponds to https://catalog.princeton.edu/catalog/9947595033506421. The In field lists the title of that second record; the desired behavior would be for that title to be linked to the second record.

[kevinreiss]

Could you explain this a bit further @mzelesky?

"However, inventory should not be shared from a host record. This is a difference from existing 773/774 MMS ID functionality."

[mzelesky]

If there is a 773/774 pairing based on MMS ID, inventory from the host record is shown in the constituent. We would not want inventory from a record linked from a 773 by OCLC number to appear in that record.