Are third-party (non-Virtuoso) SPARQL endpoints supported?
• Third-party SPARQL endpoints are supported through Virtuoso’s SPARQL-FED (Federated SPARQL) support. CXML can be generated from a third-party endpoint without this native facility by routing the query through a Virtuoso SPARQL endpoint, stipulating the third-party endpoint in a SERVICE clause. Which SPARQL query types does SparqlCxml support? • SparqlCxml, that is CXML generated directly from the /sparql endpoint, supports SELECT, DESCRIBE and CONSTRUCT queries. All CXML generated by the Facet Pivot Bridge uses an internal DESCRIBE. Are there limits on the size of a collection? How are large result sets handled? • Memory constraints limit the maximum collection size the Silverlight PivotViewer control can handle. To mitigate the effects of this limit, the Facet Pivot Bridge supports paged collections. Large collections are split into pages whose size is controlled through a ‘Page size’ control in the bridge interface. Each page constitutes a sub-collection, containing no more than th
