private FilterDefinition <TEntity> GetFilter <TEntity>(QueryUnion queryUnion)
where TEntity : Entity
{
var filters = queryUnion.Queries.Select(q => GetFilter <TEntity>(q));
if (queryUnion.Operand == QueryUnionOperands.And)
{
return(Builders <TEntity> .Filter.And(filters));
}
else
{
return(Builders <TEntity> .Filter.Or(filters));
}
}
public virtual Node VisitQueryUnion(QueryUnion union, QueryUnion changes, QueryUnion deletions, QueryUnion insertions){
this.UpdateSourceContext(union, changes);
if (union == null) return changes;
if (changes != null){
if (deletions == null || insertions == null)
Debug.Assert(false);
else{
}
}else if (deletions != null)
return null;
return union;
}
public virtual Differences VisitQueryUnion(QueryUnion union1, QueryUnion union2){
Differences differences = new Differences(union1, union2);
if (union1 == null || union2 == null){
if (union1 != union2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QueryUnion changes = (QueryUnion)union2.Clone();
QueryUnion deletions = (QueryUnion)union2.Clone();
QueryUnion insertions = (QueryUnion)union2.Clone();
// union1.LeftSource;
// union1.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 VisitQueryUnion(QueryUnion union){
if (union == null) return null;
union.LeftSource = this.VisitExpression(union.LeftSource);
union.RightSource = this.VisitExpression(union.RightSource);
return union;
}
public override Node VisitQueryUnion(QueryUnion qu) {
if (qu == null) return null;
qu.LeftSource = this.VisitExpression(qu.LeftSource);
qu.RightSource = this.VisitExpression(qu.RightSource);
if (qu.LeftSource == null || qu.LeftSource.Type == null ||
qu.RightSource == null || qu.RightSource.Type == null) return null;
Cardinality card = this.typeSystem.GetCardinality(qu.LeftSource, this.TypeViewer);
if (card != Cardinality.OneOrMore && card != Cardinality.ZeroOrMore) {
this.HandleError(qu.LeftSource, Error.QueryNotStream);
return null;
}
card = this.typeSystem.GetCardinality(qu.RightSource, this.TypeViewer);
if (card != Cardinality.OneOrMore && card != Cardinality.ZeroOrMore) {
this.HandleError(qu.RightSource, Error.QueryNotStream);
return null;
}
if (qu.LeftSource.Type.UniqueKey != qu.RightSource.Type.UniqueKey) {
this.HandleError(qu, Error.QueryBadUnionTypes, this.GetTypeName(qu.LeftSource.Type), this.GetTypeName(qu.RightSource.Type));
return null;
}
if (qu.Type == null) return null;
this.HandleError(qu, Error.QueryNotSupported);
return null;
}
public override Node VisitQueryUnion( QueryUnion union ){
if (union == null) return null;
union.LeftSource = this.VisitExpression(union.LeftSource);
union.RightSource = this.VisitExpression(union.RightSource);
if (union.LeftSource != null && union.RightSource != null &&
union.LeftSource.Type != null && union.RightSource.Type != null ){
union.Type = union.LeftSource.Type; // hack for now
}
return union;
}
public virtual void VisitQueryUnion(QueryUnion union){
if (union == null) return;
this.VisitExpression(union.LeftSource);
this.VisitExpression(union.RightSource);
}
public override Node VisitQueryUnion(QueryUnion union){
if (union == null) return null;
return base.VisitQueryUnion((QueryUnion)union.Clone());
}
public virtual Node VisitQueryUnion(QueryUnion union1, QueryUnion union2){
if (union1 == null) return null;
if (union2 == null){
union1.LeftSource = this.VisitExpression(union1.LeftSource, null);
union1.RightSource = this.VisitExpression(union1.RightSource, null);
}else{
union1.LeftSource = this.VisitExpression(union1.LeftSource, union2.LeftSource);
union1.RightSource = this.VisitExpression(union1.RightSource, union2.RightSource);
}
return union1;
}
public override Node VisitQueryUnion( QueryUnion union ) {
base.VisitQueryUnion(union);
return this.Compose(union, this.GetComposer(union.LeftSource), this.GetComposer(union.RightSource));
}
public override Node VisitQueryUnion(QueryUnion union)
{
base.VisitQueryUnion(union);
return(this.Compose(union, this.GetComposer(union.LeftSource), this.GetComposer(union.RightSource)));
}
public EventingVisitor(Action<QueryUnion> visitQueryUnion) { VisitedQueryUnion += visitQueryUnion; } public event Action<QueryUnion> VisitedQueryUnion; public override Node VisitQueryUnion(QueryUnion union) { if (VisitedQueryUnion != null) VisitedQueryUnion(union); return base.VisitQueryUnion(union); }