/// <summary>
/// execute by nonee transaction
/// </summary>
/// <param name="serverInfo">database server</param>
/// <param name="cmds">command</param>
/// <returns></returns>
int ExecuteByNoneTransaction(ServerInfo serverInfo, IEnumerable <RdbCommand> cmds)
{
IQueryTranslator queryTranslator = QueryTranslator.GetTranslator(serverInfo);
using (var conn = DbServerFactory.GetConnection(serverInfo))
{
int executeRows = 0;
foreach (var cmd in cmds)
{
executeRows += ExecuteSingleCommand(queryTranslator, conn, cmd);
}
return(executeRows);
}
}
/// <summary>
/// query data list
/// </summary>
/// <typeparam name="T">data type</typeparam>
/// <param name="server">database server</param>
/// <param name="cmd">command</param>
/// <returns>data list</returns>
public IEnumerable <T> Query <T>(ServerInfo server, ICommand cmd)
{
var verifyResults = VerifyCommand(cmd);
cmd.Query = cmd.Query ?? QueryFactory.Create();
#region query object translate
IQueryTranslator queryTranslator = QueryTranslator.GetTranslator(server);
var tranResult = queryTranslator.Translate(cmd.Query);
#endregion
#region execute
StringBuilder cmdText = new StringBuilder();
switch (cmd.Query.QueryType)
{
case QueryCommandType.Text:
cmdText.Append(tranResult.ConditionString);
break;
case QueryCommandType.QueryObject:
default:
int size = cmd.Query == null ? 0 : cmd.Query.QuerySize;
string fieldSplitChar = string.Format(",{0}.", queryTranslator.ObjectPetName);
cmdText.AppendFormat("{3}SELECT {0}.{1} FROM `{2}` AS {0}", queryTranslator.ObjectPetName, string.Join(fieldSplitChar, FormatFields(cmd.Fields)), cmd.ObjectName, tranResult.PreScript);
if (!tranResult.ConditionString.IsNullOrEmpty())
{
cmdText.AppendFormat(" WHERE {0}", tranResult.ConditionString);
}
if (!tranResult.OrderString.IsNullOrEmpty())
{
cmdText.AppendFormat(" ORDER BY {0}", tranResult.OrderString);
}
if (size > 0)
{
cmdText.AppendFormat(" LIMIT 0,{0}", size);
}
break;
}
#endregion
using (var conn = DbServerFactory.GetConnection(server))
{
return(conn.Query <T>(cmdText.ToString(), tranResult.Parameters, commandType: GetCommandType(verifyResults.Item1.First())));
}
}
/// <summary>
/// Aggregate Function
/// </summary>
/// <typeparam name="T">data type</typeparam>
/// <param name="server">database server</param>
/// <param name="cmd">command</param>
/// <returns></returns>
T AggregateFunction <T>(ServerInfo server, ICommand cmd)
{
var verifyResults = VerifyCommand(cmd);
cmd.Query = cmd.Query ?? QueryFactory.Create();
#region query object translate
IQueryTranslator queryTranslator = QueryTranslator.GetTranslator(server);
var tranResult = queryTranslator.Translate(cmd.Query);
#endregion
#region query
StringBuilder cmdText = new StringBuilder();
switch (cmd.Query.QueryType)
{
case QueryCommandType.Text:
cmdText.Append(tranResult.ConditionString);
break;
case QueryCommandType.QueryObject:
default:
string funcName = GetAggregateFunctionName(cmd.Operate);
if (funcName.IsNullOrEmpty() || cmd.Fields.IsNullOrEmpty())
{
return(default(T));
}
cmdText.AppendFormat("{4}SELECT {0}({3}.`{1}`) FROM `{2}` AS {3}", funcName, cmd.Fields.ElementAt(0), cmd.ObjectName, queryTranslator.ObjectPetName, tranResult.PreScript);
if (!tranResult.ConditionString.IsNullOrEmpty())
{
cmdText.AppendFormat(" WHERE {0}", tranResult.ConditionString);
}
if (!tranResult.OrderString.IsNullOrEmpty())
{
cmdText.AppendFormat(" ORDER BY {0}", tranResult.OrderString);
}
break;
}
#endregion
using (var conn = DbServerFactory.GetConnection(server))
{
return(conn.ExecuteScalar <T>(cmdText.ToString(), tranResult.Parameters, commandType: GetCommandType(verifyResults.Item1.First())));
}
}
/// <summary>
/// query data list offset the specified numbers
/// </summary>
/// <typeparam name="T">data type</typeparam>
/// <param name="server">database server</param>
/// <param name="cmd">command</param>
/// <param name="offsetNum">offset num</param>
/// <param name="size">query size</param>
/// <returns></returns>
public IEnumerable <T> QueryOffset <T>(ServerInfo server, ICommand cmd, int offsetNum = 0, int size = int.MaxValue)
{
var verifyResults = VerifyCommand(cmd);
cmd.Query = cmd.Query ?? QueryFactory.Create();
#region query object translate
IQueryTranslator queryTranslator = QueryTranslator.GetTranslator(server);
var tranResult = queryTranslator.Translate(cmd.Query);
#endregion
#region execute
StringBuilder cmdText = new StringBuilder();
switch (cmd.Query.QueryType)
{
case QueryCommandType.Text:
cmdText.Append(tranResult.ConditionString);
break;
case QueryCommandType.QueryObject:
default:
string fieldSplitChar = string.Format(",{0}.", queryTranslator.ObjectPetName);
string conditionString = string.Empty;
string orderString = string.Empty;
string limitString = string.Empty;
if (!tranResult.ConditionString.IsNullOrEmpty())
{
conditionString = string.Format(" WHERE {0}", tranResult.ConditionString);
}
if (!tranResult.OrderString.IsNullOrEmpty())
{
orderString = string.Format(" ORDER BY {0}", tranResult.OrderString);
}
limitString = string.Format(" LIMIT {0},{1}", offsetNum, size);
cmdText.AppendFormat("{7}SELECT (SELECT COUNT({3}.`{0}`) FROM `{2}` AS {3} {4}) AS PagingTotalCount,{3}.{1} FROM `{2}` AS {3} {4} {5} {6}", cmd.Fields.ElementAt(0), string.Join(fieldSplitChar, FormatFields(cmd.Fields)), cmd.ObjectName, queryTranslator.ObjectPetName, conditionString, orderString, limitString, tranResult.PreScript);
break;
}
#endregion
using (var conn = DbServerFactory.GetConnection(server))
{
return(conn.Query <T>(cmdText.ToString(), tranResult.Parameters, commandType: GetCommandType(verifyResults.Item1.First())));
}
}
/// <summary>
/// execute by transaction
/// </summary>
/// <param name="serverInfo">database server</param>
/// <param name="cmds">commands</param>
/// <returns></returns>
int ExecuteByTransaction(ServerInfo serverInfo, IEnumerable <RdbCommand> cmds)
{
IQueryTranslator queryTranslator = QueryTranslator.GetTranslator(serverInfo);
using (var conn = DbServerFactory.GetConnection(serverInfo))
{
conn.Open();
var tran = conn.BeginTransaction();
bool result = true;
int resultValue = 0;
try
{
foreach (var cmd in cmds)
{
int cmdResult = ExecuteSingleCommand(queryTranslator, conn, cmd, tran);
resultValue += cmdResult;
if (cmd.VerifyResult != null)
{
result = result && cmd.VerifyResult(cmdResult);
}
}
if (result)
{
tran.Commit();
}
else
{
tran.Rollback();
resultValue = 0;
}
return(resultValue);
}
catch (Exception ex)
{
tran.Rollback();
throw ex;
}
}
}
