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The last option only works when Islandora is installed with Mulgara as triple store.
Solr Breadcrumbs Configuration
You may configure the way Solr generates and displays breadcrumbs in Administration » Islandora » Solr Index » Solr Breadcrumbs (admin/islandora/search/islandora_solr/breadcrumbs).
The Solr Parent Fields specifies the Solr fields in order of descending priority that should used to determine the precedent breadcrumb(s). The suggested and default behavior of Solr breadcrumbs is to use the relationships isMemberOfCollection and isMemberOf to determine the parent (precedent) breadcrumb(s). Each field is checked in descending order from the top until a result is returned.
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FAQ
Q. Why are some dates not rendered correctly?
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A. The Apache Solr PHP Client that we use does not support https connections to Solr. ISLANDORA-646 documents this issue, but it will not be fixed..
Q. Why do I get no results for a search for a PID in Advanced Search?
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