/// <summary>
/// Applies the query to the given federation
/// </summary>
public RDFSelectQueryResult ApplyToFederation(RDFFederation federation)
{
if (federation != null)
{
return(RDFQueryEngine.CreateNew().EvaluateSelectQuery(this, federation));
}
else
{
return(new RDFSelectQueryResult());
}
}
/// <summary>
/// Applies the query to the given graph
/// </summary>
public RDFSelectQueryResult ApplyToGraph(RDFGraph graph)
{
if (graph != null)
{
return(RDFQueryEngine.CreateNew().EvaluateSelectQuery(this, graph));
}
else
{
return(new RDFSelectQueryResult());
}
}
/// <summary>
/// Applies the query to the given store
/// </summary>
public RDFSelectQueryResult ApplyToStore(RDFStore store)
{
if (store != null)
{
return(RDFQueryEngine.CreateNew().EvaluateSelectQuery(this, store));
}
else
{
return(new RDFSelectQueryResult());
}
}
/// <summary>
/// Applies the query to the given federation
/// </summary>
public RDFConstructQueryResult ApplyToFederation(RDFFederation federation)
{
if (federation != null)
{
return(RDFQueryEngine.CreateNew().EvaluateConstructQuery(this, federation));
}
else
{
return(new RDFConstructQueryResult(this.ToString()));
}
}
/// <summary>
/// Applies the query to the given store
/// </summary>
public RDFConstructQueryResult ApplyToStore(RDFStore store)
{
if (store != null)
{
return(RDFQueryEngine.CreateNew().EvaluateConstructQuery(this, store));
}
else
{
return(new RDFConstructQueryResult(this.ToString()));
}
}
/// <summary>
/// Applies the query to the given graph
/// </summary>
public RDFConstructQueryResult ApplyToGraph(RDFGraph graph)
{
if (graph != null)
{
return(RDFQueryEngine.CreateNew().EvaluateConstructQuery(this, graph));
}
else
{
return(new RDFConstructQueryResult(this.ToString()));
}
}
/// <summary>
/// Executes projection algorythm
/// </summary>
private DataTable ExecuteProjectionAlgorythm()
{
List <DataTable> projFuncTables = new List <DataTable>();
this.Aggregators.ForEach(ag =>
projFuncTables.Add(ag.ExecuteProjection(this.PartitionVariables)));
DataTable resultTable = RDFQueryEngine.CreateNew()
.CombineTables(projFuncTables, false);
return(resultTable);
}
/// <summary>
/// Applies the modifier on the given datatable
/// </summary>
internal override DataTable ApplyModifier(DataTable table)
{
//Perform consistency checks
ConsistencyChecks(table);
//Execute partition algorythm
foreach (DataRow tableRow in table.Rows)
{
this.Aggregators.ForEach(ag =>
ag.ExecutePartition(GetPartitionKey(tableRow), tableRow));
}
//Execute projection algorythm
List <DataTable> projFuncTables = new List <DataTable>();
this.Aggregators.ForEach(ag =>
projFuncTables.Add(ag.ExecuteProjection(this.PartitionVariables)));
//Produce result's table
return(RDFQueryEngine.CreateNew().CombineTables(projFuncTables, false));
}