/// <summary>
/// Optimizes the map execution
/// </summary>
/// <returns></returns>
public override BaseMap Optimize()
{
InputMap1 = InputMap1.Optimize();
InputMap2 = InputMap2.Optimize();
return(this);
}
/// <summary>
/// Evaluates the join map
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public override IEnumerable <LabelledTreeNode <object, Term> > Evaluate <T>(IGraphSource source)
{
var tempSet = new List <LabelledTreeNode <object, Term> >();
foreach (var treeJoin in InputMap2.Evaluate <T>(source))
{
tempSet.Add(treeJoin);
}
foreach (var treeBase in InputMap1.Evaluate <T>(source))
{
var result = treeBase;
bool isCompatible = false;
foreach (var treeJoin in tempSet)
{
if (JoinHelper.Compatible(treeBase, treeJoin, _addressPairList))
{
isCompatible = true;
result = JoinHelper.Join(result, treeJoin, _addressPairList);
}
}
if (isCompatible)
{
yield return(result);
}
}
}
/// <summary>
/// Evaluates the union map
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public override IEnumerable <LabelledTreeNode <object, Term> > Evaluate <T>(IGraphSource source)
{
foreach (var tree in InputMap1.Evaluate <T>(source))
{
yield return(tree);
}
foreach (var tree in InputMap2.Evaluate <T>(source))
{
yield return(tree);
}
}
/// <summary>
/// Removes empty maps from this instance
/// </summary>
/// <returns></returns>
public override BaseMap Trim()
{
if (InputMap1 is EmptyMap && InputMap2 is EmptyMap)
{
return(new EmptyMap());
}
if (InputMap1 is EmptyMap)
{
return(InputMap2.Trim());
}
if (InputMap2 is EmptyMap)
{
return(InputMap1.Trim());
}
InputMap1 = InputMap1.Trim();
InputMap2 = InputMap2.Trim();
return(this);
}