public void GetQueryPlan(DatabaseInfo dbName, IQuery query, GetQueryPlanCompleted getQueryPlanCompleted)
{
if (m_serverChanel == null)
{
throw new NoConnectionException();
}
if (!m_worker.IsBusy)
{
m_worker = new BackgroundWorker();
m_worker.WorkerSupportsCancellation = true;
m_worker.DoWork += new DoWorkEventHandler(DoGetQueryPlan);
m_worker.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs e)
{
IsExecutingChanged(this, new IsExecutingEventArgs(false));
var qr = e.Result as IQueryPlanReslult;
IsExecutingChanged(this, new IsExecutingEventArgs(false));
//TODO odbsluga wyjatkow
if (qr == null || qr.QueryPlan == null)
{
getQueryPlanCompleted(ExecuteQueryStatus.Error, qr);
}
else if (e.Error != null)
{
messageService.ShowMessage(e.Error.Message, "Error");
getQueryPlanCompleted(ExecuteQueryStatus.Error, null);
Disconnected(this, EventArgs.Empty);
}
else if (e.Cancelled)
{
getQueryPlanCompleted(ExecuteQueryStatus.Canceled, null);
}
else
{
getQueryPlanCompleted(ExecuteQueryStatus.Done, qr);
}
};
//wraps args to query structure
QueryStruct queryStruct = new QueryStruct();
queryStruct.DbName = dbName;
queryStruct.Query = query;
IsExecutingChanged(this, new IsExecutingEventArgs(true));
m_worker.RunWorkerAsync(queryStruct);
}
}
public void DeleteDatabase(DatabaseInfo dbName, DeleteDatabaseCompleted renameDatabaseNameCompleted)
{
if (m_serverChanel == null)
{
throw new NoConnectionException();
}
if (!m_worker.IsBusy)
{
m_worker = new BackgroundWorker();
m_worker.DoWork += new DoWorkEventHandler(DoExecuteQuery);
m_worker.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs e)
{
var qr = e.Result as IQueryResult;
IsExecutingChanged(this, new IsExecutingEventArgs(false));
//TODO odbsluga wyjatkow
if (qr == null || qr.QueryResultType != ResultType.SystemInfo)
{
renameDatabaseNameCompleted(ExecuteQueryStatus.Error, dbName, qr);
}
else if (e.Error != null)
{
messageService.ShowMessage(e.Error.Message, "Error");
renameDatabaseNameCompleted(ExecuteQueryStatus.Error, dbName, qr);
Disconnected(this, EventArgs.Empty);
}
else
{
renameDatabaseNameCompleted(ExecuteQueryStatus.Done, dbName, qr);
StringReader txtR = new StringReader(qr.StringOutput);
XmlSerializer xmlSerializer = new XmlSerializer(typeof(SystemInfo));
SystemInfo = xmlSerializer.Deserialize(txtR) as SystemInfo;
DatabasesChanged(this, EventArgs.Empty);
}
};
//wraps args to query structure
QueryStruct queryStruct = new QueryStruct();
queryStruct.DbName = dbName;
queryStruct.Query = InternalQueries.DropDatabaseQuery(dbName.Name);
IsExecutingChanged(this, new IsExecutingEventArgs(true));
m_worker.RunWorkerAsync(queryStruct);
}
}
void DoGetQueryPlan(object sender, DoWorkEventArgs e)
{
QueryStruct queryStruct = (QueryStruct)e.Argument;
try
{
e.Result = m_serverChanel.GetQueryPlan(new DatabaseInfo {
Name = queryStruct.DbName.Name
},
new DTOQuery(queryStruct.Query));
}
catch (EndpointNotFoundException)
{
Disconnect();
throw;
}
catch (CommunicationException ex)
{
Disconnect();
throw;
}
if (m_worker.WorkerSupportsCancellation)
{
while (true)
{
if (m_worker.CancellationPending)
{
e.Cancel = true;
return;
}
if (e.Result != null)
{
return;
}
Thread.Sleep(10);
}
}
}
private void WorkWithQuery(int maxSize)
{
ShowName("Qurey");
QueryStruct <long> structer;
structer = new QueryStruct <long>(maxSize);
Fill(structer, maxSize);
structer.Remove();
structer.Remove();
structer.Insert(25);
structer.Insert(90);
structer.Remove();
structer.Remove();
structer.Insert(5);
structer.Insert(2);
structer.Display();
Remove(structer);
ShowEndMessage();
}
public void GetSystemInfo(GetSystemInfoCompleted getSystemInfoCompleted)
{
if (m_serverChanel == null)
{
throw new NoConnectionException();
}
if (!m_worker.IsBusy)
{
m_worker = new BackgroundWorker();
m_worker.WorkerSupportsCancellation = true;
m_worker.DoWork += new DoWorkEventHandler(DoExecuteQuery);
m_worker.RunWorkerCompleted += delegate(object s, RunWorkerCompletedEventArgs e)
{
var qr = e.Result as IQueryResult;
IsExecutingChanged(this, new IsExecutingEventArgs(false));
//TODO odbsluga wyjatkow
if (e.Error != null)
{
messageService.ShowMessage(e.Error.Message, "Error");
getSystemInfoCompleted(ExecuteQueryStatus.Error, null, qr);
Disconnected(this, EventArgs.Empty);
}
else if (e.Cancelled)
{
getSystemInfoCompleted(ExecuteQueryStatus.Canceled, null, qr);
}
else
{
if (qr.QueryResultType == ResultType.SystemInfo)
{
StringReader txtR = new StringReader(qr.StringOutput);
XmlSerializer xmlSerializer = new XmlSerializer(typeof(SystemInfo));
SystemInfo = xmlSerializer.Deserialize(txtR) as SystemInfo;
Databases = SystemInfo.Databases.Select(d => d.Name).ToList();
getSystemInfoCompleted(ExecuteQueryStatus.Done, SystemInfo, qr);
}
else if (qr.QueryResultType == ResultType.StringResult)
{
messageService.ShowMessage(qr.StringOutput, "Unexpected result");
getSystemInfoCompleted(ExecuteQueryStatus.Error, null, qr);
}
else
{
messageService.ShowMessage(String.Format("[{0}]", qr.QueryResultType),
"Unexpected result");
getSystemInfoCompleted(ExecuteQueryStatus.Error, null, qr);
}
}
};
//wraps args to query structure
QueryStruct queryStruct = new QueryStruct();
queryStruct.DbName = _databaseInfoForSystemInfoQuery;
queryStruct.Query = _getSystemInfo;
IsExecutingChanged(this, new IsExecutingEventArgs(true));
m_worker.RunWorkerAsync(queryStruct);
}
}
/// <summary>
/// 產生T-SQL語法
/// </summary>
/// <param name="QuerySql">傳入QueryStruct</param>
/// <returns>回傳T-SQL語法</returns>
public static string GenerSQL(QueryStruct QuerySql)
{
StringBuilder sb = new StringBuilder();
sb.Append("Select ");
#region 列出選取欄位
//列出選取欄位
sb.Append(GetSelectField(QuerySql.SelectFieldList));
#endregion
sb.Append("From ");
#region 列出選取的資料表
//列出選取的資料表
sb.Append(GetSelectTable(QuerySql.SelectTableViewList));
#endregion
sb.Append("Where 1=1 ");
#region 檢查Rownum
//檢查Rownum
sb.Append(GetRowNumCheck(QuerySql.RowNumCheck));
#endregion
#region 列出條件
//列出條件
for (int i = 0; i < QuerySql.ConditionList.Length; i++)
{
//列出TSQL Operator
sb.Append(GetTSQLOperator(QuerySql.ConditionList[i]));
//列出欄位名稱
sb.Append(QuerySql.ConditionList[i].ConditionField);
//列出欄位運算子
sb.Append(GetFieldOperator(QuerySql.ConditionList[i]));
//列出欄位值
sb.Append(GetFieldValue(QuerySql.ConditionList[i]));
}
#endregion
#region 列出Group By 句子
//列出Group By 句子
sb.Append(GetGroupByProcess(QuerySql.GroupByProcess, QuerySql.SelectFieldList));
#endregion
#region 列出Group By Having 條件
//列出Group By Having 條件
for (int j = 0; j < QuerySql.HavingList.Length; j++)
{
if (j == 0)
{
sb.Append("Having ");
}
else
{
//列出TSQL Operator
sb.Append(GetTSQLOperator(QuerySql.ConditionList[j]));
}
//列出欄位名稱
sb.Append(QuerySql.HavingList[j].ConditionField);
//列出欄位運算子
sb.Append(GetFieldOperator(QuerySql.HavingList[j]));
//列出欄位值
sb.Append(GetFieldValue(QuerySql.HavingList[j]));
}
#endregion
#region 列出Order by內容
//列出Order by內容
sb.Append(GetOrderBy(QuerySql.OrderByList));
#endregion
return sb.ToString();
}