protected ClientJoinExpression UpdateClientJoin(ClientJoinExpression join, ProjectionExpression projection, IEnumerable<Expression> outerKey, IEnumerable<Expression> innerKey)
{
if (projection != join.Projection || outerKey != join.OuterKey || innerKey != join.InnerKey)
{
return new ClientJoinExpression(projection, outerKey, innerKey);
}
return join;
}
protected override Expression VisitClientJoin(ClientJoinExpression join)
{
var innerKey = this.VisitExpressionList(join.InnerKey);
var outerKey = this.VisitExpressionList(join.OuterKey);
ProjectionExpression projection = (ProjectionExpression)this.Visit(join.Projection);
if (projection != join.Projection || innerKey != join.InnerKey || outerKey != join.OuterKey)
{
return new ClientJoinExpression(projection, outerKey, innerKey);
}
return join;
}
protected override Expression VisitClientJoin(ClientJoinExpression join)
{
// treat client joins as new top level
var saveTop = this.isTopLevel;
var saveSelect = this.currentSelect;
this.isTopLevel = true;
this.currentSelect = null;
Expression result = base.VisitClientJoin(join);
this.isTopLevel = saveTop;
this.currentSelect = saveSelect;
return result;
}
protected virtual Expression VisitClientJoin(ClientJoinExpression join)
{
var projection = (ProjectionExpression)this.Visit(join.Projection);
var outerKey = this.VisitExpressionList(join.OuterKey);
var innerKey = this.VisitExpressionList(join.InnerKey);
return this.UpdateClientJoin(join, projection, outerKey, innerKey);
}
protected virtual Expression VisitClientJoin(ClientJoinExpression join)
{
this.AddAlias(join.Projection.Select.Alias);
this.Write("ClientJoin(");
this.WriteLine(Indentation.Inner);
this.Write("OuterKey(");
this.VisitExpressionList(join.OuterKey);
this.Write("),");
this.WriteLine(Indentation.Same);
this.Write("InnerKey(");
this.VisitExpressionList(join.InnerKey);
this.Write("),");
this.WriteLine(Indentation.Same);
this.Visit(join.Projection);
this.WriteLine(Indentation.Outer);
this.Write(")");
return join;
}