Creating Field Selectors for PubMed OpenURL Elements

This procedure describes creating a field selector that selects for at least these meta tags in an OpenURL:

  • pmid=PMIDVALUE
  • id=pmid:PMIDVALUE
  • id=info:pmid:PMIDVALUE
  • rft_id=pmid:PMIDVALUE

OpenURLs containing these meta tags can be resolved by an external lookup service.

The data from OpenURLs containing these meta tags requires manipulation before you use it to retrieve an OpenURL from an external lookup service. You apply a regular expression to the data and use the result as the value of the field selector.

NOTE

WebBridge LR field selectors accept regular expressions such as POSIX Basic Regular Expressions (BREs) and Extended Regular Expressions (EREs) as implemented in the UNIX grep utility. If a regular expression is specified, WebBridge LR uses the result of the regular expression as the value of the field selector.

  1. Choose Field Selectors from the menu on the left-hand side of the WebBridge LR home page.

    The Field Selectors tab displays:

    Field Selector tab
  2. Choose the Create New button.

    The Field Selectors tab displays.

    Field Selector tab
  3. In the Name text box, enter:

    PMID
  4. To distinguish PubMed field selectors, you can enter a description in the Description text box. Descriptions are optional.
  5. In the Definiton text box for OpenURL, enter:

    pmid|id=pmid:|rft_id=pmid:|rft_id=info:pmid|
  6. In the Regular Expression text box for OpenURL, enter the following regular expression:

    /^pmid:|^info:pmid\///
  7. Choose Save.