com.facetmap
Interface CompoundHeadingFacet
- All Superinterfaces:
- Facet
- All Known Implementing Classes:
- CompoundLinearFacet, SimpleCompoundHeadingFacet
public interface CompoundHeadingFacet
- extends Facet
This facet allows you to set multiple Headings, from the same Facet, on a
given Resource. If you want to describe a book as having Author A and Author
B (from an Author facet), then your FacetSpace would contain a
CompoundHeadingFacet whose underlying facet is the Author facet. As a
result, the book would appear in selections containing either the
Author A heading or the Author B heading.
It's important to note that the decision to use compound headings is made
for the entire facet at once. You cannot use CompoundHeadingFacet just for
books with multiple authors, while using a regular TaxonomyFacet for books
with one author. If the books are in the same ResourceSpace, they share the
same FacetSpace -- and that FacetSpace must have only one facet type for
Author: either CompoundHeadingFacet or TaxonomyFacet.
In SqlFacetmap, our high-performance implementation,
CompoundHeadingFacet necessarily comes with a performance cost. Therefore
you should carefully consider whether your classification scheme requires
compound headings.
Strict
Faceted Classification discusses the relative merits of assigning
multiple headings and why it may not be as necessary as it first appears to
be.
getCompoundHeading
CompoundHeading getCompoundHeading(java.lang.String id)
throws UnknownReferenceException
- Throws:
UnknownReferenceException
getCompoundHeading
CompoundHeading getCompoundHeading(java.util.Collection headings)
getUnderlyingFacet
Facet getUnderlyingFacet()