public void FindNearest(IRow key, out CursorGetFlags flags)
{
Exception exception = null;
int nestingLevel = _plan.ServerProcess.BeginTransactionalCall();
try
{
long startTicks = TimingUtility.CurrentTicks;
try
{
_sourceTable.FindNearest(key);
flags = InternalGetFlags();
}
finally
{
_program.Statistics.ExecuteTime += TimingUtility.TimeSpanFromTicks(startTicks);
}
}
catch (Exception E)
{
exception = E;
throw WrapException(E);
}
finally
{
_plan.ServerProcess.EndTransactionalCall(nestingLevel, exception);
}
}
public bool Refresh(IRow row, out CursorGetFlags flags)
{
Exception exception = null;
int nestingLevel = _plan.ServerProcess.BeginTransactionalCall();
try
{
long startTicks = TimingUtility.CurrentTicks;
try
{
bool success = _sourceTable.Refresh(row);
flags = InternalGetFlags();
return(success);
}
finally
{
_program.Statistics.ExecuteTime += TimingUtility.TimeSpanFromTicks(startTicks);
}
}
catch (Exception E)
{
exception = E;
throw WrapException(E);
}
finally
{
_plan.ServerProcess.EndTransactionalCall(nestingLevel, exception);
}
}
public bool GotoBookmark(Guid bookmark, bool forward, out CursorGetFlags flags)
{
Exception exception = null;
int nestingLevel = _plan.ServerProcess.BeginTransactionalCall();
try
{
long startTicks = TimingUtility.CurrentTicks;
try
{
bool success = InternalGotoBookmark(bookmark, forward);
flags = InternalGetFlags();
return(success);
}
finally
{
_program.Statistics.ExecuteTime += TimingUtility.TimeSpanFromTicks(startTicks);
}
}
catch (Exception E)
{
exception = E;
throw WrapException(E);
}
finally
{
_plan.ServerProcess.EndTransactionalCall(nestingLevel, exception);
}
}
private CursorGetFlags InternalGetFlags()
{
CursorGetFlags getFlags = CursorGetFlags.None;
if (_sourceTable.BOF())
{
getFlags = getFlags | CursorGetFlags.BOF;
}
if (_sourceTable.EOF())
{
getFlags = getFlags | CursorGetFlags.EOF;
}
return(getFlags);
}
// MoveBy
public int MoveBy(int delta, out CursorGetFlags flags)
{
Exception exception = null;
int nestingLevel = _plan.ServerProcess.BeginTransactionalCall();
try
{
long startTicks = TimingUtility.CurrentTicks;
try
{
int localDelta = 0;
while (delta != 0)
{
if (delta > 0)
{
if (!_sourceTable.Next())
{
break;
}
delta--;
}
else
{
if (!_sourceTable.Prior())
{
break;
}
delta++;
}
localDelta++;
}
flags = InternalGetFlags();
return(localDelta);
}
finally
{
_program.Statistics.ExecuteTime += TimingUtility.TimeSpanFromTicks(startTicks);
}
}
catch (Exception E)
{
exception = E;
throw WrapException(E);
}
finally
{
_plan.ServerProcess.EndTransactionalCall(nestingLevel, exception);
}
}
// Fetch
public int Fetch(IRow[] rows, Guid[] bookmarks, int count, bool skipCurrent, out CursorGetFlags flags)
{
Exception exception = null;
int nestingLevel = _plan.ServerProcess.BeginTransactionalCall();
try
{
long startTicks = TimingUtility.CurrentTicks;
try
{
int localCount = 0;
while (count != 0)
{
if (count > 0)
{
if ((localCount == 0) && skipCurrent && !_sourceTable.Next())
{
break;
}
if ((localCount > 0) && (!_sourceTable.Next()))
{
break;
}
_sourceTable.Select(rows[localCount]);
bookmarks[localCount] = Supports(CursorCapability.Bookmarkable) ? InternalGetBookmark() : Guid.Empty;
count--;
}
else
{
if ((localCount == 0) && skipCurrent && !_sourceTable.Prior())
{
break;
}
if ((localCount > 0) && (!_sourceTable.Prior()))
{
break;
}
_sourceTable.Select(rows[localCount]);
bookmarks[localCount] = Supports(CursorCapability.Bookmarkable) ? InternalGetBookmark() : Guid.Empty;
count++;
}
localCount++;
}
flags = InternalGetFlags();
return(localCount);
}
finally
{
_program.Statistics.ExecuteTime += TimingUtility.TimeSpanFromTicks(startTicks);
}
}
catch (Exception E)
{
exception = E;
throw WrapException(E);
}
finally
{
_plan.ServerProcess.EndTransactionalCall(nestingLevel, exception);
}
}
// TrivialEOF unneccesary because Last returns flags
protected void SetFlags(CursorGetFlags flags)
{
_flags = flags;
_flagsCached = true;
_trivialBOF = false;
}
