internal override ObjectSpanRewriter.SpanTrackingInfo CreateEntitySpanTrackingInfo(
DbExpression expression,
EntityType entityType)
{
ObjectSpanRewriter.SpanTrackingInfo spanTrackingInfo = new ObjectSpanRewriter.SpanTrackingInfo();
ObjectFullSpanRewriter.SpanPathInfo spanPathInfo = this._currentSpanPath.Peek();
if (spanPathInfo.Children != null)
{
int index = 1;
foreach (KeyValuePair <NavigationProperty, ObjectFullSpanRewriter.SpanPathInfo> child in spanPathInfo.Children)
{
if (spanTrackingInfo.ColumnDefinitions == null)
{
spanTrackingInfo = this.InitializeTrackingInfo(this.RelationshipSpan);
}
DbExpression expression1 = (DbExpression)expression.Property(child.Key);
this._currentSpanPath.Push(child.Value);
DbExpression dbExpression = this.Rewrite(expression1);
this._currentSpanPath.Pop();
spanTrackingInfo.ColumnDefinitions.Add(new KeyValuePair <string, DbExpression>(spanTrackingInfo.ColumnNames.Next(), dbExpression));
AssociationEndMember propertyTargetEnd = this.GetNavigationPropertyTargetEnd(child.Key);
spanTrackingInfo.SpannedColumns[index] = propertyTargetEnd;
if (this.RelationshipSpan)
{
spanTrackingInfo.FullSpannedEnds[propertyTargetEnd] = true;
}
++index;
}
}
return(spanTrackingInfo);
}
internal ObjectSpanRewriter.SpanTrackingInfo InitializeTrackingInfo(
bool createAssociationEndTrackingInfo)
{
ObjectSpanRewriter.SpanTrackingInfo spanTrackingInfo = new ObjectSpanRewriter.SpanTrackingInfo();
spanTrackingInfo.ColumnDefinitions = new List <KeyValuePair <string, DbExpression> >();
spanTrackingInfo.ColumnNames = new AliasGenerator(string.Format((IFormatProvider)CultureInfo.InvariantCulture, "Span{0}_Column", (object)this._spanCount));
spanTrackingInfo.SpannedColumns = new Dictionary <int, AssociationEndMember>();
if (createAssociationEndTrackingInfo)
{
spanTrackingInfo.FullSpannedEnds = new Dictionary <AssociationEndMember, bool>();
}
return(spanTrackingInfo);
}
private DbExpression RewriteEntity(DbExpression expression, EntityType entityType)
{
if (DbExpressionKind.NewInstance == expression.ExpressionKind)
{
return(expression);
}
++this._spanCount;
int spanCount = this._spanCount;
ObjectSpanRewriter.SpanTrackingInfo spanTrackingInfo = this.CreateEntitySpanTrackingInfo(expression, entityType);
List <KeyValuePair <AssociationEndMember, AssociationEndMember> > relationshipSpanEnds = this.GetRelationshipSpanEnds(entityType);
if (relationshipSpanEnds != null)
{
if (spanTrackingInfo.ColumnDefinitions == null)
{
spanTrackingInfo = this.InitializeTrackingInfo(false);
}
int index = spanTrackingInfo.ColumnDefinitions.Count + 1;
foreach (KeyValuePair <AssociationEndMember, AssociationEndMember> keyValuePair in relationshipSpanEnds)
{
if (spanTrackingInfo.FullSpannedEnds == null || !spanTrackingInfo.FullSpannedEnds.ContainsKey(keyValuePair.Value))
{
DbExpression source = (DbExpression)null;
if (!this.TryGetNavigationSource(keyValuePair.Value, out source))
{
source = (DbExpression)expression.GetEntityRef().NavigateAllowingAllRelationshipsInSameTypeHierarchy((RelationshipEndMember)keyValuePair.Key, (RelationshipEndMember)keyValuePair.Value);
}
spanTrackingInfo.ColumnDefinitions.Add(new KeyValuePair <string, DbExpression>(spanTrackingInfo.ColumnNames.Next(), source));
spanTrackingInfo.SpannedColumns[index] = keyValuePair.Value;
++index;
}
}
}
if (spanTrackingInfo.ColumnDefinitions == null)
{
--this._spanCount;
return(expression);
}
spanTrackingInfo.ColumnDefinitions.Insert(0, new KeyValuePair <string, DbExpression>(string.Format((IFormatProvider)CultureInfo.InvariantCulture, "Span{0}_SpanRoot", (object)spanCount), expression));
DbExpression dbExpression = (DbExpression)DbExpressionBuilder.NewRow((IEnumerable <KeyValuePair <string, DbExpression> >)spanTrackingInfo.ColumnDefinitions);
this.AddSpanMap((RowType)dbExpression.ResultType.EdmType, spanTrackingInfo.SpannedColumns);
return(dbExpression);
}
