/// <summary>
/// Cria a expresão de agrupamento por.
/// </summary>
/// <returns></returns>
protected override LambdaExpression CreateGroupByExpression()
{
MemberAccessExpressionBuilderBase base2 = ExpressionBuilderFactory.MemberAccess(this.Queryable, this._groupDescriptor.MemberType, this._groupDescriptor.Member);
base2.ParameterExpression = base.ParameterExpression;
return(base2.CreateLambdaExpression());
}
/// <summary>
/// Recupera o construtor da expressão de acesso ao membro.
/// </summary>
/// <param name="source">Consulta de origem.</param>
/// <param name="memberType">Tipo do membro.</param>
/// <param name="memberName">Nome do membro.</param>
/// <returns></returns>
public static MemberAccessExpressionBuilderBase MemberAccess(IQueryable source, Type memberType, string memberName)
{
MemberAccessExpressionBuilderBase base2 = MemberAccess(source.ElementType, memberType, memberName);
base2.Options.LiftMemberAccessToNull = source.Provider.IsLinqToObjectsProvider();
return(base2);
}
/// <summary>
/// Recuper ao construtor de expressão para acessar o membro.
/// </summary>
/// <param name="elementType"></param>
/// <param name="memberType"></param>
/// <param name="memberName"></param>
/// <param name="liftMemberAccess"></param>
/// <returns></returns>
public static MemberAccessExpressionBuilderBase MemberAccess(Type elementType, Type memberType, string memberName, bool liftMemberAccess)
{
MemberAccessExpressionBuilderBase base2 = MemberAccess(elementType, memberType, memberName);
base2.Options.LiftMemberAccessToNull = liftMemberAccess;
return(base2);
}
/// <summary>
/// Cria a expressão do membro.
/// </summary>
/// <returns></returns>
protected virtual Expression CreateMemberExpression()
{
Type memberType = this.FilterDescriptor.MemberType;
MemberAccessExpressionBuilderBase base2 = ExpressionBuilderFactory.MemberAccess(base.ParameterExpression.Type, memberType, this.FilterDescriptor.Member);
base2.Options.CopyFrom(base.Options);
base2.ParameterExpression = base.ParameterExpression;
Expression expression = base2.CreateMemberAccessExpression();
if ((memberType != null) && (expression.Type.GetNonNullableType() != memberType.GetNonNullableType()))
{
expression = Expression.Convert(expression, memberType);
}
return(expression);
}
