/// <summary>
/// Processes a SPARQL Query asynchronously passing the results to the relevant handler and invoking the callback when the query completes
/// </summary>
/// <param name="rdfHandler">RDF Handler</param>
/// <param name="resultsHandler">Results Handler</param>
/// <param name="query">SPARQL Query</param>
/// <param name="callback">Callback</param>
/// <param name="state">State to pass to the callback</param>
public void ProcessQuery(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query, QueryCallback callback, Object state)
{
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(rdfHandler, resultsHandler, query, r =>
{
d.EndInvoke(r);
callback(rdfHandler, resultsHandler, state);
}, state);
}
/// <summary>
/// Processes a SPARQL Query asynchronously invoking the relevant callback when the query completes
/// </summary>
/// <param name="query">SPARQL QUery</param>
/// <param name="rdfCallback">Callback for queries that return a Graph</param>
/// <param name="resultsCallback">Callback for queries that return a Result Set</param>
/// <param name="state">State to pass to the callback</param>
/// <remarks>
/// In the event of a success the appropriate callback will be invoked, if there is an error both callbacks will be invoked and passed an instance of <see cref="AsyncError"/> which contains details of the error and the original state information passed in.
/// </remarks>
public void ProcessQuery(SparqlQuery query, GraphCallback rdfCallback, SparqlResultsCallback resultsCallback, Object state)
{
Graph g = new Graph();
SparqlResultSet rset = new SparqlResultSet();
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(new GraphHandler(g), new ResultSetHandler(rset), query, r =>
{
try
{
d.EndInvoke(r);
if (rset.ResultsType != SparqlResultsType.Unknown)
{
resultsCallback(rset, state);
}
else
{
rdfCallback(g, state);
}
}
catch (RdfQueryException queryEx)
{
if (rdfCallback != null)
{
rdfCallback(null, new AsyncError(queryEx, state));
}
if (resultsCallback != null)
{
resultsCallback(null, new AsyncError(queryEx, state));
}
}
catch (Exception ex)
{
RdfQueryException queryEx = new RdfQueryException("Unexpected error while making an asynchronous query, see inner exception for details", ex);
if (rdfCallback != null)
{
rdfCallback(null, new AsyncError(queryEx, state));
}
if (resultsCallback != null)
{
resultsCallback(null, new AsyncError(queryEx, state));
}
}
}, state);
}
/// <summary>
/// Processes a SPARQL Query asynchronously invoking the relevant callback when the query completes
/// </summary>
/// <param name="query">SPARQL QUery</param>
/// <param name="rdfCallback">Callback for queries that return a Graph</param>
/// <param name="resultsCallback">Callback for queries that return a Result Set</param>
/// <param name="state">State to pass to the callback</param>
public void ProcessQuery(SparqlQuery query, GraphCallback rdfCallback, SparqlResultsCallback resultsCallback, Object state)
{
Graph g = new Graph();
SparqlResultSet rset = new SparqlResultSet();
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(new GraphHandler(g), new ResultSetHandler(rset), query, r =>
{
d.EndInvoke(r);
if (rset.ResultsType != SparqlResultsType.Unknown)
{
resultsCallback(rset, state);
}
else
{
rdfCallback(g, state);
}
}, state);
}
/// <summary>
/// Processes a SPARQL Query asynchronously passing the results to the relevant handler and invoking the callback when the query completes
/// </summary>
/// <param name="rdfHandler">RDF Handler</param>
/// <param name="resultsHandler">Results Handler</param>
/// <param name="query">SPARQL Query</param>
/// <param name="callback">Callback</param>
/// <param name="state">State to pass to the callback</param>
/// <remarks>
/// In the event of a success the callback will be invoked, if there is an error the callback will be invoked and passed an instance of <see cref="AsyncError"/> which contains details of the error and the original state information passed in.
/// </remarks>
public void ProcessQuery(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query, QueryCallback callback, Object state)
{
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(rdfHandler, resultsHandler, query, r =>
{
try
{
d.EndInvoke(r);
callback(rdfHandler, resultsHandler, state);
}
catch (RdfQueryException queryEx)
{
callback(rdfHandler, resultsHandler, new AsyncError(queryEx, state));
}
catch (Exception ex)
{
callback(rdfHandler, resultsHandler, new AsyncError(new RdfQueryException("Unexpected error making an asynchronous query", ex), state));
}
}, state);
}
/// <summary>
/// Processes a SPARQL Query asynchronously passing the results to the relevant handler and invoking the callback when the query completes
/// </summary>
/// <param name="rdfHandler">RDF Handler</param>
/// <param name="resultsHandler">Results Handler</param>
/// <param name="query">SPARQL Query</param>
/// <param name="callback">Callback</param>
/// <param name="state">State to pass to the callback</param>
public void ProcessQuery(IRdfHandler rdfHandler, ISparqlResultsHandler resultsHandler, SparqlQuery query, QueryCallback callback, Object state)
{
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(rdfHandler, resultsHandler, query, r =>
{
d.EndInvoke(r);
callback(rdfHandler, resultsHandler, state);
}, state);
}
/// <summary>
/// Processes a SPARQL Query asynchronously invoking the relevant callback when the query completes
/// </summary>
/// <param name="query">SPARQL QUery</param>
/// <param name="rdfCallback">Callback for queries that return a Graph</param>
/// <param name="resultsCallback">Callback for queries that return a Result Set</param>
/// <param name="state">State to pass to the callback</param>
public void ProcessQuery(SparqlQuery query, GraphCallback rdfCallback, SparqlResultsCallback resultsCallback, Object state)
{
Graph g = new Graph();
SparqlResultSet rset = new SparqlResultSet();
ProcessQueryAsync d = new ProcessQueryAsync(this.ProcessQuery);
d.BeginInvoke(new GraphHandler(g), new ResultSetHandler(rset), query, r =>
{
d.EndInvoke(r);
if (rset.ResultsType != SparqlResultsType.Unknown)
{
resultsCallback(rset, state);
}
else
{
rdfCallback(g, state);
}
}, state);
}
