Query

Component description

The MKSearch query component is responsible for handling HTTP-based search queries by general users. It's implementation is currently in the form of a single HttpQuery servlet class that forwards queries to custom JSP result pages that query and display the results with a custom ResultsRenderer type.

Completed task information has been moved to the beta 1 query plans archive.

Outstanding issues

Extended graph queries

The query builder does not handle extended RDF graphs, where a Dublin Core qualified term is used to refine a primary search field. For example, where an indexed document has a DC.Date property with a DCTERMS.W3CDTF encoding scheme, simple date queries are not matched. If no W3C date node were present, the match is successful.

Beta 2 development plans

Results cacheing

Standing RSS feeds and results paging will also require a result cache to optimise performance on the server side. However, the cache mechanism also needs to be integrated with the repository management interface, so that stale results are purged.

AND and AND NOT queries

The query builder should interpret the + and - symbols immediately before a word to mean AND and AND NOT respectively.

Phrase search result navigation

Where quoted phrases are used in queries, page navigation URLs should maintain the full query syntax.

Task progress

• Amended the ServletQueryBuilder class to re-instate quotes in the query URI that are extracted by the getQueryTerms method.
• Hex-encoded phrase quotes are also maintained in the RSS channel feed URL.
• Phrase query navigation complete