protected bool IsUseFetchNarrowingResultSetWrapper()
{
FetchNarrowingBean fnbean = FetchNarrowingBeanContext.GetFetchNarrowingBeanOnThread();
// for safety result
if (fnbean != null && fnbean.SafetyMaxResultSize > 0)
{
return(true);
}
// for unsupported paging (ConditionBean)
if (fnbean != null && fnbean.IsFetchNarrowingEffective)
{
// for unsupported paging (Database)
if (fnbean.IsFetchNarrowingSkipStartIndexEffective || fnbean.IsFetchNarrowingLoopCountEffective)
{
return(true);
}
// for auto paging (OutsideSql)
if (OutsideSqlContext.IsExistOutsideSqlContextOnThread())
{
OutsideSqlContext outsideSqlContext = OutsideSqlContext.GetOutsideSqlContextOnThread();
if (outsideSqlContext.IsOffsetByCursorForcedly || outsideSqlContext.IsLimitByCursorForcedly)
{
return(true);
}
}
}
return(false);
}
/**
* Set fetch-narrowing-bean context on thread.
*
* @param cb FetchNarrowing-bean. (NotNull)
*/
public static void SetFetchNarrowingBeanOnThread(FetchNarrowingBean cb)
{
if (cb == null)
{
String msg = "The argument[cb] must not be null.";
throw new ArgumentNullException(msg);
}
Thread.SetData(_fetchNarrowingBeanSlot, cb);
}
// ===============================================================================
// Constructor
// ===========
public FetchNarrowingResultSetWrapper(System.Data.IDataReader dataReader, FetchNarrowingBean fetchNarrowingBean
, bool offsetByCursorForcedly, bool limitByCursorForcedly)
{
_dataReader = dataReader;
_fetchNarrowingBean = fetchNarrowingBean;
_offsetByCursorForcedly = offsetByCursorForcedly;
_limitByCursorForcedly = limitByCursorForcedly;
skip();
}
protected void SetupOutsideSqlFetchNarrowingBean(Object pmb, OutsideSqlOption option)
{
if (pmb == null || !FetchNarrowingBeanContext.IsTheTypeFetchNarrowingBean(pmb.GetType()))
{
return;
}
FetchNarrowingBean fetchNarrowingBean = (FetchNarrowingBean)pmb;
if (option.IsManualPaging)
{
fetchNarrowingBean.IgnoreFetchNarrowing();
}
FetchNarrowingBeanContext.SetFetchNarrowingBeanOnThread(fetchNarrowingBean);
}
public static void RestoreAllContextOnThreadIfExists()
{
if (!IsExistContextStackOnThread())
{
return;
}
Stack <ContextStack> stackOnThread = GetContextStackOnThread();
if (stackOnThread.Count == 0)
{
ClearContextStackOnThread();
return;
}
ContextStack contextStack = stackOnThread.Pop();
ConditionBean cb = contextStack.ConditionBean;
if (cb != null)
{
ConditionBeanContext.SetConditionBeanOnThread(cb);
}
OutsideSqlContext outsideSqlContext = contextStack.OutsideSqlContext;
if (outsideSqlContext != null)
{
OutsideSqlContext.SetOutsideSqlContextOnThread(outsideSqlContext);
}
FetchNarrowingBean fetchNarrowingBean = contextStack.FetchNarrowingBean;
if (fetchNarrowingBean != null)
{
FetchNarrowingBeanContext.SetFetchNarrowingBeanOnThread(fetchNarrowingBean);
}
IDictionary <String, Object> internalMap = contextStack.InternalMap;
if (internalMap != null)
{
InternalMapContext.ClearInternalMapOnThread();
foreach (String key in internalMap.Keys)
{
Object value = internalMap[key];
InternalMapContext.SetObject(key, value);
}
}
}
public IDataReader CreateDataReader(IDataSource dataSource, IDbCommand cmd)
{
IDataReader dataReader = ExecuteReader(dataSource, cmd);
if (!IsUseFetchNarrowingResultSetWrapper())
{
return(dataReader);
}
FetchNarrowingBean fnbean = FetchNarrowingBeanContext.GetFetchNarrowingBeanOnThread();
FetchNarrowingResultSetWrapper wrapper = null;
if (OutsideSqlContext.IsExistOutsideSqlContextOnThread())
{
OutsideSqlContext outsideSqlContext = OutsideSqlContext.GetOutsideSqlContextOnThread();
wrapper = new FetchNarrowingResultSetWrapper(dataReader, fnbean
, outsideSqlContext.IsOffsetByCursorForcedly
, outsideSqlContext.IsLimitByCursorForcedly);
}
else
{
wrapper = new FetchNarrowingResultSetWrapper(dataReader, fnbean, false, false);
}
return(wrapper);
}