/// <summary>
/// Applies a Grouping on a given Variable to the Binder Groups from a previous Grouping
/// </summary>
/// <param name="context">Evaluation Context</param>
/// <param name="groups">Binder Group to subgroup</param>
/// <returns></returns>
public override List <BindingGroup> Apply(SparqlEvaluationContext context, List <BindingGroup> groups)
{
List <BindingGroup> outgroups = new List <BindingGroup>();
BindingGroup nulls = new BindingGroup();
foreach (BindingGroup group in groups)
{
Dictionary <INode, BindingGroup> subgroups = new Dictionary <INode, BindingGroup>();
foreach (int id in group.BindingIDs)
{
INode value = context.Binder.Value(this._name, id);
if (value != null)
{
if (!subgroups.ContainsKey(value))
{
subgroups.Add(value, new BindingGroup(group));
if (this.AssignVariable != null)
{
subgroups[value].AddAssignment(this.AssignVariable, value);
}
}
subgroups[value].Add(id);
}
else
{
nulls.Add(id);
}
}
foreach (BindingGroup g in subgroups.Values)
{
outgroups.Add(g);
}
if (nulls.Any())
{
outgroups.Add(nulls);
if (this.AssignVariable != null)
{
nulls.AddAssignment(this.AssignVariable, null);
}
nulls = new BindingGroup();
}
}
if (this._child == null)
{
return(outgroups);
}
else
{
return(this._child.Apply(context, outgroups));
}
}
/// <summary>
/// Applies a Grouping on a given Variable to the Binder
/// </summary>
/// <param name="context">Evaluation Context</param>
/// <returns></returns>
public override List <BindingGroup> Apply(SparqlEvaluationContext context)
{
Dictionary <INode, BindingGroup> groups = new Dictionary <INode, BindingGroup>();
BindingGroup nulls = new BindingGroup();
foreach (int id in context.Binder.BindingIDs)
{
INode value = context.Binder.Value(this._name, id);
if (value != null)
{
if (!groups.ContainsKey(value))
{
groups.Add(value, new BindingGroup());
if (this.AssignVariable != null)
{
groups[value].AddAssignment(this.AssignVariable, value);
}
}
groups[value].Add(id);
}
else
{
nulls.Add(id);
}
}
List <BindingGroup> outGroups = (from g in groups.Values select g).ToList();
if (nulls.Any())
{
outGroups.Add(nulls);
if (this.AssignVariable != null)
{
nulls.AddAssignment(this.AssignVariable, null);
}
}
if (this._child == null)
{
return(outGroups);
}
else
{
return(this._child.Apply(context, outGroups));
}
}
/// <summary>
/// Applies a Grouping on a given Variable to the Binder Groups from a previous Grouping
/// </summary>
/// <param name="context">Evaluation Context</param>
/// <param name="groups">Binder Group to subgroup</param>
/// <returns></returns>
public override List<BindingGroup> Apply(SparqlEvaluationContext context, List<BindingGroup> groups)
{
List<BindingGroup> outgroups = new List<BindingGroup>();
BindingGroup nulls = new BindingGroup();
foreach (BindingGroup group in groups)
{
Dictionary<INode, BindingGroup> subgroups = new Dictionary<INode, BindingGroup>();
foreach (int id in group.BindingIDs)
{
INode value = context.Binder.Value(this._name, id);
if (value != null)
{
if (!subgroups.ContainsKey(value))
{
subgroups.Add(value, new BindingGroup(group));
if (this.AssignVariable != null)
{
subgroups[value].AddAssignment(this.AssignVariable, value);
}
}
subgroups[value].Add(id);
}
else
{
nulls.Add(id);
}
}
foreach (BindingGroup g in subgroups.Values)
{
outgroups.Add(g);
}
if (nulls.Any())
{
outgroups.Add(nulls);
if (this.AssignVariable != null) nulls.AddAssignment(this.AssignVariable, null);
nulls = new BindingGroup();
}
}
if (this._child == null)
{
return outgroups;
}
else
{
return this._child.Apply(context, outgroups);
}
}
/// <summary>
/// Applies a Grouping on a given Variable to the Binder
/// </summary>
/// <param name="context">Evaluation Context</param>
/// <returns></returns>
public override List<BindingGroup> Apply(SparqlEvaluationContext context)
{
Dictionary<INode, BindingGroup> groups = new Dictionary<INode, BindingGroup>();
BindingGroup nulls = new BindingGroup();
foreach (int id in context.Binder.BindingIDs)
{
INode value = context.Binder.Value(this._name, id);
if (value != null)
{
if (!groups.ContainsKey(value))
{
groups.Add(value, new BindingGroup());
if (this.AssignVariable != null)
{
groups[value].AddAssignment(this.AssignVariable, value);
}
}
groups[value].Add(id);
}
else
{
nulls.Add(id);
}
}
List<BindingGroup> outGroups = (from g in groups.Values select g).ToList();
if (nulls.Any())
{
outGroups.Add(nulls);
if (this.AssignVariable != null) nulls.AddAssignment(this.AssignVariable, null);
}
if (this._child == null)
{
return outGroups;
}
else
{
return this._child.Apply(context, outGroups);
}
}