public virtual Differences VisitQueryIntersection(QueryIntersection intersection1, QueryIntersection intersection2){
Differences differences = new Differences(intersection1, intersection2);
if (intersection1 == null || intersection2 == null){
if (intersection1 != intersection2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QueryIntersection changes = (QueryIntersection)intersection2.Clone();
QueryIntersection deletions = (QueryIntersection)intersection2.Clone();
QueryIntersection insertions = (QueryIntersection)intersection2.Clone();
// intersection1.LeftSource;
// intersection1.RightSource;
if (differences.NumberOfDifferences == 0){
differences.Changes = null;
differences.Deletions = null;
differences.Insertions = null;
}else{
differences.Changes = changes;
differences.Deletions = deletions;
differences.Insertions = insertions;
}
return differences;
}
public virtual Node VisitQueryIntersection(QueryIntersection intersection, QueryIntersection changes, QueryIntersection deletions, QueryIntersection insertions){
this.UpdateSourceContext(intersection, changes);
if (intersection == null) return changes;
if (changes != null){
if (deletions == null || insertions == null)
Debug.Assert(false);
else{
}
}else if (deletions != null)
return null;
return intersection;
}
public override Node VisitQueryIntersection(QueryIntersection qi) {
if (qi == null) return null;
qi.LeftSource = this.VisitExpression(qi.LeftSource);
qi.RightSource = this.VisitExpression(qi.RightSource);
if (qi.LeftSource == null || qi.LeftSource.Type == null ||
qi.RightSource == null || qi.RightSource.Type == null) return null;
Cardinality card = this.typeSystem.GetCardinality(qi.LeftSource, this.TypeViewer);
if (card != Cardinality.OneOrMore && card != Cardinality.ZeroOrMore) {
this.HandleError(qi.LeftSource, Error.QueryNotStream);
return null;
}
card = this.typeSystem.GetCardinality(qi.RightSource, this.TypeViewer);
if (card != Cardinality.OneOrMore && card != Cardinality.ZeroOrMore) {
this.HandleError(qi.RightSource, Error.QueryNotStream);
return null;
}
if (qi.LeftSource.Type.UniqueKey != qi.RightSource.Type.UniqueKey) {
this.HandleError(qi, Error.QueryBadIntersectionTypes, this.GetTypeName(qi.LeftSource.Type), this.GetTypeName(qi.RightSource.Type));
return null;
}
if (qi.Type == null) return null;
this.HandleError(qi, Error.QueryNotSupported);
return null;
}
public virtual Node VisitQueryIntersection(QueryIntersection intersection){
if (intersection == null) return intersection;
intersection.LeftSource = this.VisitExpression(intersection.LeftSource);
intersection.RightSource = this.VisitExpression(intersection.RightSource);
intersection.Type = intersection.LeftSource == null ? null : intersection.LeftSource.Type;
return intersection;
}
public virtual void VisitQueryIntersection(QueryIntersection intersection){
if (intersection == null) return;
this.VisitExpression(intersection.LeftSource);
this.VisitExpression(intersection.RightSource);
}
public override Node VisitQueryIntersection(QueryIntersection intersection){
if (intersection == null) return null;
intersection.LeftSource = this.VisitExpression(intersection.LeftSource);
intersection.RightSource = this.VisitExpression(intersection.RightSource);
if (intersection.LeftSource != null && intersection.RightSource != null &&
intersection.LeftSource.Type != null && intersection.RightSource.Type != null){
intersection.Type = intersection.LeftSource.Type;
}
return intersection;
}
public override Node VisitQueryIntersection(QueryIntersection intersection){
if (intersection == null) return intersection;
return base.VisitQueryIntersection((QueryIntersection)intersection.Clone());
}
public virtual Node VisitQueryIntersection(QueryIntersection intersection1, QueryIntersection intersection2){
if (intersection1 == null) return null;
if (intersection2 == null){
intersection1.LeftSource = this.VisitExpression(intersection1.LeftSource, null);
intersection1.RightSource = this.VisitExpression(intersection1.RightSource, null);
intersection1.Type = intersection1.LeftSource == null ? null : intersection1.LeftSource.Type;
}else{
intersection1.LeftSource = this.VisitExpression(intersection1.LeftSource, intersection2.LeftSource);
intersection1.RightSource = this.VisitExpression(intersection1.RightSource, intersection2.RightSource);
intersection1.Type = intersection1.LeftSource == null ? null : intersection1.LeftSource.Type;
}
return intersection1;
}
public override Node VisitQueryIntersection(QueryIntersection inter) {
base.VisitQueryIntersection(inter);
return this.Compose(inter, this.GetComposer(inter.LeftSource), this.GetComposer(inter.RightSource));
}
public override Node VisitQueryIntersection(QueryIntersection inter)
{
base.VisitQueryIntersection(inter);
return(this.Compose(inter, this.GetComposer(inter.LeftSource), this.GetComposer(inter.RightSource)));
}
public EventingVisitor(Action<QueryIntersection> visitQueryIntersection) { VisitedQueryIntersection += visitQueryIntersection; } public event Action<QueryIntersection> VisitedQueryIntersection; public override Node VisitQueryIntersection(QueryIntersection intersection) { if (VisitedQueryIntersection != null) VisitedQueryIntersection(intersection); return base.VisitQueryIntersection(intersection); }
