public DataTable FindTable <T, FindT>(FindT FindEntity, string orderField, bool isAsc, int pageSize, int pageIndex, out int total, string appendSql = "")
where FindT : class, new()
{
string sql = DatabaseCommon.QueryWhereSQL <FindT>(FindEntity).ToString();
Type type = FindEntity.GetType();
string viewName = "";
var viewAttribute = type.GetCustomAttributes(true).OfType <ViewAttribute>();
var descriptionAttributes = viewAttribute as ViewAttribute[] ?? viewAttribute.ToArray();
if (descriptionAttributes.Any())
{
viewName = descriptionAttributes.ToList()[0].viewName;
}
string tableName = string.IsNullOrWhiteSpace(viewName) ? EntityAttribute.GetEntityTable <T>() : viewName;
var translateInfo = DatabaseCommon.GetTranslateValue <T>();
if (translateInfo.Count(x => x.Length > 0) > 0)
{
sql = DatabaseCommon.PottingSql <T>(translateInfo, sql, tableName, string.IsNullOrWhiteSpace(viewName) ? false : true);
}
if (!string.IsNullOrEmpty(appendSql))
{
sql += appendSql;
}
return(FindTable(sql, orderField, isAsc, pageSize, pageIndex, out total));
}
public IQueryable <T> IQueryable <T>(string sql) where T : class, new()
{
string tablename = EntityAttribute.GetEntityTable <T>();
using (var dbConnection = Connection)
{
var translateInfo = DatabaseCommon.GetTranslateValue <T>();
if (translateInfo.Count(x => x.Length > 0) > 0)
{
sql = DatabaseCommon.PottingSql <T>(translateInfo, sql, tablename);
}
var data = dbConnection.Query <T>(sql);
return(data.AsQueryable());
}
}
/// <summary>
/// 执行表达式
/// </summary>
/// <param name="exp">表达式</param>
/// <param name="operateType">操作类型</param>
/// <param name="columnName">列名</param>
/// <param name="newValue">值</param>
/// <returns>int</returns>
public static StringBuilder DealExp <T>(Expression exp, OperateType operateType, List <string> columnName = null, List <string> newValue = null)
{
StringBuilder sb = new StringBuilder();
string TableName = EntityAttribute.GetEntityTable <T>();
switch (operateType)
{
case OperateType.Select:
sb.Append("Select ");
sb.Append(GetConditionString(columnName));
sb.Append(" From ");
sb.Append(TableName);
sb.Append(" Where ");
break;
case OperateType.Delete:
sb.Append("Delete ");
sb.Append(TableName);
sb.Append(" Where ");
break;
case OperateType.Update:
sb.Append("Update ");
sb.Append(TableName);
sb.Append(" Set(");
if (columnName != null && newValue != null && columnName.Count == newValue.Count && columnName.Count > 0)
{
for (int i = 0; i < columnName.Count; i++)
{
sb.Append(columnName[i]);
sb.Append("=");
sb.Append(newValue[i]);
}
}
sb.Append(") Where ");
break;
case OperateType.Insert:
sb.Append("Insert Into ");
sb.Append(TableName);
sb.Append(GetConditionString(columnName).Length > 0 ? string.Format("({0})", GetConditionString(columnName)) : string.Empty);
sb.Append(" Values( ");
sb.Append(GetConditionString(newValue));
sb.Append(") Where ");
break;
}
if (ExpToSqlHelper.DealExpress(exp).Substring(0, 4).ToUpper().Equals("TRUE"))
{
sb.Append(" 1=1 ");
sb.Append(ExpToSqlHelper.DealExpress(exp).Remove(0, 4));
}
else
{
sb.Append(ExpToSqlHelper.DealExpress(exp));
}
if (operateType == OperateType.Select)
{
var translateInfo = DatabaseCommon.GetTranslateValue <T>();
if (translateInfo.Count(x => x.Length > 0) > 0)
{
StringBuilder stringBuilder = new StringBuilder();
return(stringBuilder.Append(PottingSql <T>(translateInfo, sb.ToString(), TableName)));
}
}
return(sb);
}
