public BrightstarSparqlResultSet ExecuteSparql(SparqlQuery query, IStore store)
{
try
{
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
return(new BrightstarSparqlResultSet(queryProcessor.ProcessQuery(query)));
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing Sparql {0}. Cause: {1}",
query, ex);
throw;
}
}
public void ExecuteSparql(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, string sparqlQuery, IStore store)
{
try
{
var query = ParseSparql(sparqlQuery);
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
queryProcessor.ProcessQuery(rdfHandler, resultsHandler, query);
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing Sparql {0}. Cause: {1}",
sparqlQuery, ex);
throw;
}
}
/// <summary>
/// Provides the required SPARQL query interface for the <see cref="BrightstarIOManager"/> used for SPARQL update support
/// </summary>
/// <param name="rdfHandler"></param>
/// <param name="resultsHandler"></param>
/// <param name="sparqlQuery"></param>
/// <param name="store"></param>
public void ExecuteSparql(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, string sparqlQuery, IStore store)
{
try
{
var query = ParseSparql(sparqlQuery);
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
queryProcessor.ProcessQuery(rdfHandler, resultsHandler, query);
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing Sparql {0}. Cause: {1}",
sparqlQuery, ex);
throw;
}
}
public BrightstarSparqlResultSet ExecuteSparql(string expression, IStore store)
{
try
{
Logging.LogDebug("ExecuteSparql {0}", expression);
var query = ParseSparql(expression);
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
return new BrightstarSparqlResultSet(queryProcessor.ProcessQuery(query));
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing Sparql {0}. Cause: {1}",
expression, ex);
throw;
}
}
public BrightstarSparqlResultsType ExecuteSparql(SparqlQuery query, IStore store, TextWriter resultsWriter)
{
try
{
EnsureValidResultFormat(query);
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
var queryResult = queryProcessor.ProcessQuery(query);
if (queryResult is SparqlResultSet)
{
var sparqlResultSet = (SparqlResultSet) queryResult;
ISparqlResultsWriter sparqlResultsWriter = null;
if (_sparqlResultsFormat != null)
{
sparqlResultsWriter =
MimeTypesHelper.GetSparqlWriter(new string[] {_sparqlResultsFormat.ToString()});
}
if (sparqlResultsWriter == null)
{
throw new NoAcceptableFormatException(typeof (SparqlResultsFormat),
"No acceptable format provided for writing a SPARQL result set.");
}
sparqlResultsWriter.Save(sparqlResultSet, resultsWriter);
switch (sparqlResultSet.ResultsType)
{
case SparqlResultsType.Boolean:
return BrightstarSparqlResultsType.Boolean;
case SparqlResultsType.VariableBindings:
return BrightstarSparqlResultsType.VariableBindings;
default:
throw new BrightstarInternalException("Unrecognized SPARQL result type");
}
}
if (queryResult is IGraph)
{
var g = (IGraph) queryResult;
var rdfWriter = _rdfFormat == null
? null
: MimeTypesHelper.GetWriter(new string[] {_rdfFormat.ToString()});
if (rdfWriter == null)
{
throw new NoAcceptableFormatException(typeof (RdfFormat),
"No acceptable format provided for writing an RDF graph result.");
}
rdfWriter.Save(g, resultsWriter);
return BrightstarSparqlResultsType.Graph;
}
throw new BrightstarInternalException(
String.Format("Unexpected return type from QueryProcessor.ProcessQuery: {0}",
queryResult.GetType()));
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing query {0}. Cause: {1}",
query.ToString(), ex);
throw;
}
}
public BrightstarSparqlResultsType ExecuteSparql(SparqlQuery query, IStore store, TextWriter resultsWriter)
{
try
{
EnsureValidResultFormat(query);
var dataset = new StoreSparqlDataset(store);
if (_defaultGraphUris != null)
{
dataset.SetDefaultGraph(_defaultGraphUris);
}
var queryProcessor = new BrightstarQueryProcessor(store, dataset);
var queryResult = queryProcessor.ProcessQuery(query);
if (queryResult is SparqlResultSet)
{
var sparqlResultSet = (SparqlResultSet)queryResult;
ISparqlResultsWriter sparqlResultsWriter = null;
if (_sparqlResultsFormat != null)
{
sparqlResultsWriter =
MimeTypesHelper.GetSparqlWriter(new string[] { _sparqlResultsFormat.ToString() });
}
if (sparqlResultsWriter == null)
{
throw new NoAcceptableFormatException(typeof(SparqlResultsFormat),
"No acceptable format provided for writing a SPARQL result set.");
}
sparqlResultsWriter.Save(sparqlResultSet, resultsWriter);
switch (sparqlResultSet.ResultsType)
{
case SparqlResultsType.Boolean:
return(BrightstarSparqlResultsType.Boolean);
case SparqlResultsType.VariableBindings:
return(BrightstarSparqlResultsType.VariableBindings);
default:
throw new BrightstarInternalException("Unrecognized SPARQL result type");
}
}
if (queryResult is IGraph)
{
var g = (IGraph)queryResult;
var rdfWriter = _rdfFormat == null
? null
: MimeTypesHelper.GetWriter(new string[] { _rdfFormat.ToString() });
if (rdfWriter == null)
{
throw new NoAcceptableFormatException(typeof(RdfFormat),
"No acceptable format provided for writing an RDF graph result.");
}
rdfWriter.Save(g, resultsWriter);
return(BrightstarSparqlResultsType.Graph);
}
throw new BrightstarInternalException(
String.Format("Unexpected return type from QueryProcessor.ProcessQuery: {0}",
queryResult.GetType()));
}
catch (Exception ex)
{
Logging.LogError(BrightstarEventId.SparqlExecutionError,
"Error Executing query {0}. Cause: {1}",
query.ToString(), ex);
throw;
}
}