Yesterday we deployed a new release of researchr. The release fixes a bug that prevented creation of personal libraries. We have recently also addressed a number of performance bugs that became manifest at scale. But the most significant change in functionality is the advanced support for faceted search. The self implemented support for faceted search allowed selection of publications in a publication list for a single facet at a time. Now you can explore the intersection of multiple facet categories and taking the union or intersection of multiple facets within a category. Try it out. For example, explore the publications on domain-specific language design and find the publications from 2009 tagged ‘grammar’, or find the publications in the ‘oopsla’ venue tagged ‘language workbench’.
The custom implementation of faceted search lacked features, was slow, not always correct, and took considerable effort to implement. The new faceted search is no longer a custom implementation specific for researchr, but is based on the search DSL for WebDSL that Elmer van Chastelet has been working on for his Master’s thesis project. The DSL provides abstractions for search indexing with Apache Lucene and Hibernate Search and a query language for searching objects. With these features, any WebDSL application can use these powerful libraries with a fraction of the effort it took my custom implementation. A full description of the DSL is under construction.