class Client
{
  Server service;

  public void QueryBusinessObjects()
  {
    // compose linq expression
    Expression<Func<BusinessObject, bool>> linqFilterExpression = (bObj) => 
      bObj.Name == "My BO Name" &&
      bObj.CreatedAt > new DateTime(2001, 12, 31);

    // translate linq expression into serializable expression tree
    Remote.Linq.Expressions.Expression queryFilterExpression = 
      linqFilterExpression.ToQueryExpression();

    // transfer expression tree to server and retrieve result
    IList<BusinessObject> queryResult = 
      service.QueryBusinessObjects(queryFilterExpression);
  }
}

class Server
{
  IQueryable<BusinessObject> businessObjectQueriable;

  public IList<BusinessObject> QueryBusinessObjects(Remote.Linq.Expressions.Expression queryFilterExpression)
  {
    // translate remote query expression tree into linq expression 
    Expression<Func<BusinessObject, bool>> linqFilterExpression = 
      queryFilterExpression.ToLinqExpression<BusinessObject, bool>();

    // apply linq expression to IQueriable<>
    IQueryable<BusinessObject> queryExpression = 
      businessObjectQueriable.Where(linqFilterExpression);

    // execute query and return result to client 
    IList<BusinessObject> queryResult = queryExpression.ToList();
    return queryResult;
  }
}