Class QueryHandler

HTTP Handler for adding SPARQL Query endpoints to ASP.Net applications
Inheritance
System.Object
BaseSparqlQueryHandler
QueryHandler
Inherited Members
Namespace: VDS.RDF.Web
Assembly: dotNetRDF.Web.dll
Syntax
public class QueryHandler : BaseSparqlQueryHandler
Remarks

Used to create a Query endpoint at a specific fixed URL

This Handler is configured using the new Configuration API introduced in the 0.3.0 release. This requires just one setting to be defined in the <appSettings> section of your Web.config file which points to a Configuration Graph like so: 

<add key="dotNetRDFConfig" value="~/App_Data/config.ttl" />
The Configuration Graph must then contain Triples like the following to specify a Query Endpoint: 
<dotnetrdf:/folder/query> a dnr:HttpHandler ;
                                dnr:type "VDS.RDF.Web.QueryHandler" ;
                                dnr:queryProcessor _:proc .

_:proc a dnr:SparqlQueryProcessor ;
       dnr:type "VDS.RDF.Query.LeviathanQueryProcessor" ;
       dnr:usingStore _:store .

_:store a dnr:TripleStore ;
        dnr:type "VDS.RDF.TripleStore" .

Methods

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LoadConfig(HttpContext)

Loads the Handler Configuration
Declaration
protected override BaseQueryHandlerConfiguration LoadConfig(HttpContext context)
Parameters
Type Name Description
HttpContext context HTTP Context
Returns
Type Description
BaseQueryHandlerConfiguration
Overrides
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UpdateConfig(HttpContext)

Updates the Handler Configuration
Declaration
protected override void UpdateConfig(HttpContext context)
Parameters
Type Name Description
HttpContext context HTTP Context
Overrides

Extension Methods