public IServerCursor OpenCursor(string expression, DataParams paramsValue)
{
#if LOGCACHEEVENTS
FSession.FServer.FInternalServer.LogMessage(String.Format("Thread {0} opening cursor '{1}'.", Thread.CurrentThread.GetHashCode(), AExpression));
#endif
RemoteParamData localParamsValue = DataParamsToRemoteParamData(paramsValue);
IRemoteServerExpressionPlan plan;
IRemoteServerCursor cursor;
PlanDescriptor descriptor;
ProgramStatistics executeTime;
LocalExpressionPlan localPlan;
LocalCursor localCursor;
if (ProcessInfo.FetchAtOpen && (ProcessInfo.FetchCount > 1))
{
Guid[] bookmarks;
RemoteFetchData fetchData;
cursor = _process.OpenCursor(expression, ref localParamsValue, out plan, out descriptor, out executeTime, GetProcessCallInfo(), GetProcessCleanupInfo(), out bookmarks, ProcessInfo.FetchCount, out fetchData);
RemoteParamDataToDataParams(paramsValue, localParamsValue);
localPlan = new LocalExpressionPlan(this, plan, descriptor, paramsValue, executeTime);
localCursor = new LocalCursor(localPlan, cursor);
localCursor.ProcessFetchData(fetchData, bookmarks, true);
}
else
{
cursor = _process.OpenCursor(expression, ref localParamsValue, out plan, out descriptor, out executeTime, GetProcessCallInfo(), GetProcessCleanupInfo());
RemoteParamDataToDataParams(paramsValue, localParamsValue);
localPlan = new LocalExpressionPlan(this, plan, descriptor, paramsValue, executeTime);
localCursor = new LocalCursor(localPlan, cursor);
}
return(localCursor);
}
public LocalCursor(LocalExpressionPlan plan, IRemoteServerCursor cursor) : base()
{
_plan = plan;
_cursor = cursor;
_internalProcess = _plan._process._internalProcess;
_internalProgram = new Program(_internalProcess);
_internalProgram.Start(null);
_buffer = new LocalRows();
_bookmarks = new LocalBookmarks();
_fetchCount = _plan._process.ProcessInfo.FetchCount;
_trivialBOF = true;
_sourceCursorIndex = -1;
}
public IDataValue Evaluate(string expression, DataParams paramsValue)
{
#if USECOLLAPSEDEVALUATECALLS
#if LOGCACHEEVENTS
FSession.FServer.FInternalServer.LogMessage(String.Format("Thread {0} evaluating expression '{1}'.", Thread.CurrentThread.GetHashCode(), AExpression));
#endif
RemoteParamData localParamsValue = DataParamsToRemoteParamData(AParams);
IRemoteServerExpressionPlan plan;
PlanDescriptor planDescriptor;
ProgramStatistics executeTime;
byte[] result = FProcess.Evaluate(AExpression, ref localParamsValue, out plan, out planDescriptor, out executeTime, GetProcessCallInfo(), GetProcessCleanupInfo());
RemoteParamDataToDataParams(AParams, localParamsValue);
#if LOGCACHEEVENTS
FSession.FServer.FInternalServer.LogMessage(String.Format("Thread {0} expression evaluated.", Thread.CurrentThread.GetHashCode()));
#endif
LocalExpressionPlan localPlan = new LocalExpressionPlan(this, plan, planDescriptor, AParams);
try
{
return(result == null ? null : DataValue.FromPhysical(this.ValueManager, localPlan.DataType, result, 0));
}
finally
{
UnprepareExpression(localPlan);
}
#else
IServerExpressionPlan localPlan = PrepareExpression(expression, paramsValue);
try
{
return(localPlan.Evaluate(paramsValue));
}
finally
{
UnprepareExpression(localPlan);
}
#endif
}