private bool CanJoinOnClient(SelectExpression select)
{
return((((this.canJoinOnClient && (this.currentMember != null)) && (!this.policy.IsDeferLoaded(this.currentMember) && !select.IsDistinct)) && ((select.GroupBy == null) || (select.GroupBy.Count == 0))) && !AggregateChecker.HasAggregates(select));
}
public ProjectionExpression(SelectExpression source, Expression projector, LambdaExpression aggregator) : base(DbExpressionType.Projection, (aggregator != null) ? aggregator.Body.Type : typeof(IEnumerable <>).MakeGenericType(new Type[] { projector.Type }))
{
this.select = source;
this.projector = projector;
this.aggregator = aggregator;
}
public DeclarationCommand(IEnumerable <VariableDeclaration> variables, SelectExpression source) : base(DbExpressionType.Declaration, typeof(void))
{
this.variables = variables.ToReadOnly <VariableDeclaration>();
this.source = source;
}
public ProjectionExpression(SelectExpression source, Expression projector) : this(source, projector, null)
{
}
public static HashSet <ColumnExpression> Gather(HashSet <TableAlias> aliases, SelectExpression select)
{
QueryLanguage.JoinColumnGatherer gatherer = new QueryLanguage.JoinColumnGatherer(aliases);
gatherer.Gather(select.Where);
return(gatherer.columns);
}
protected SubqueryExpression(DbExpressionType eType, Type type, SelectExpression select) : base(eType, type)
{
Debug.Assert(((eType == DbExpressionType.Scalar) || (eType == DbExpressionType.Exists)) || (eType == DbExpressionType.In));
this.select = select;
}
protected override Expression VisitProjection(ProjectionExpression proj)
{
SelectExpression select = (SelectExpression)this.Visit(proj.Select);
return(base.UpdateProjection(proj, select, proj.Projector, proj.Aggregator));
}
public InExpression(System.Linq.Expressions.Expression expression, SelectExpression select) : base(DbExpressionType.In, typeof(bool), select)
{
this.expression = expression;
}
