public List <PdfTestModel> GetModelList(int count)
        {
            PdfTestModel model = new PdfTestModel();
            OQL          q     = OQL.From(model).Limit(count).Select().OrderBy(model.Guid, "ASC").END;

            return(EntityQuery <PdfTestModel> .QueryList(q));
        }
        public bool Delete(string guid)
        {
            PdfTestModel model = new PdfTestModel {
                Guid = guid
            };

            return(EntityQuery <PdfTestModel> .Instance.Delete(model) > 0);
        }
        public bool Insert()
        {
            PdfTestModel model = new PdfTestModel
            {
                Guid     = Guid.NewGuid().ToString(),
                EditDate = DateTime.Now
            };

            return(EntityQuery <PdfTestModel> .Instance.Insert(model) > 0);
        }
        public bool Update(string guid, string content)
        {
            PdfTestModel model = new PdfTestModel
            {
                Guid     = guid,
                Content  = content,
                EditDate = DateTime.Now
            };

            return(EntityQuery <PdfTestModel> .Instance.Update(model) > 0);
        }