protected override void Run()
{
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
string TableName = QlArgsUnescape(DSpace_ExecArgs[0]); // nul-delimited.
string DfsOutputName = DSpace_ExecArgs[1];
string QlArgsSelectWhat = DSpace_ExecArgs[2];
long TopCount = long.Parse(DSpace_ExecArgs[3]);
string QlArgsOps = DSpace_ExecArgs[4]; // Still encoded with QlArgsEscape.
string sOptions = DSpace_ExecArgs[5]; // "DFSTEMP" or "-", etc
bool dfstemp = -1 != sOptions.IndexOf("DFSTEMP");
bool Update = -1 != sOptions.IndexOf("GUPDATE"); // UPDATE (grouped MR).
bool GroupBy = -1 != sOptions.IndexOf("GBY");
bool OrderBy = -1 != sOptions.IndexOf("OBY");
bool Order2By = -1 != sOptions.IndexOf("O2BY");
bool dfsref = -1 != sOptions.IndexOf("DFSREF");
bool queryresults = dfstemp || dfsref;
bool topdfstemp = -1 != sOptions.IndexOf("TOPTEMP");
bool distinct = -1 != sOptions.IndexOf("DISTINCT");
bool joined = -1 != sOptions.IndexOf("JOINED");
#if DEBUG
if (TopCount == 4242)
{
System.Diagnostics.Debugger.Launch();
}
#endif
string SelectWhat = QlArgsUnescape(QlArgsSelectWhat);
bool WhatFunctions = -1 != SelectWhat.IndexOf('('); // Select clause has functions (aggregates and/or scalars).
if (Order2By)
{
OrderBy = true;
WhatFunctions = false;
#if DEBUG
if (GroupBy)
{
throw new Exception("DEBUG: Not supposed to find GroupBy here with Order2By");
}
#endif
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
}
bool HasKeyOn = OrderBy || GroupBy;
if (OrderBy)
{
if (WhatFunctions || GroupBy)
{
if ("*" == SelectWhat)
{
throw new Exception("Invalid query: cannot SELECT * with ORDER BY and GROUP BY");
}
string sOrderByCols = null; // null, or "foo,bar" from "ORDER BY foo,bar".
List<string> OrderByCols = new List<string>();
string[] Ops = QlArgsUnescape(QlArgsOps).Split('\0');
List<string> NewOps = new List<string>(Ops.Length);
for (int iop = 0; iop < Ops.Length; iop++)
{
if (0 == string.Compare("ORDER", Ops[iop], true))
{
if (iop + 1 < Ops.Length
&& 0 == string.Compare("BY", Ops[iop + 1], true))
{
iop++;
int nparens = 0;
StringBuilder sob = new StringBuilder();
StringBuilder curobcol = new StringBuilder();
for (; ; )
{
iop++;
if (iop >= Ops.Length)
{
break;
}
sob.Append(Ops[iop]);
curobcol.Append(Ops[iop]);
if ("(" == Ops[iop])
{
nparens++;
}
else if (nparens > 0)
{
if (")" == Ops[iop])
{
nparens--;
}
}
iop++;
if (iop >= Ops.Length)
{
if (0 != nparens)
{
throw new Exception("Expected ) in ORDER BY");
}
if (curobcol.Length != 0)
{
OrderByCols.Add(curobcol.ToString());
curobcol.Length = 0;
}
break;
}
if (0 == nparens)
{
if (curobcol.Length != 0)
{
OrderByCols.Add(curobcol.ToString());
curobcol.Length = 0;
}
if ("," != Ops[iop])
{
break;
}
}
else
{
curobcol.Append(Ops[iop]);
}
sob.Append(Ops[iop]);
}
sOrderByCols = sob.ToString();
if (iop >= Ops.Length)
{
break;
}
}
}
NewOps.Add(Ops[iop]);
}
QlArgsOps = QlArgsEscape(string.Join("\0", NewOps.ToArray()));
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
QueryAnalyzer qa1 = new QueryAnalyzer();
string sel1 = qa1.Exec(
"SELECT DFSTEMP", QlArgsEscape(sOrderByCols + "," + SelectWhat.Replace('\0', ',')),
"FROM", QlArgsEscape(TableName),
QlArgsEscape(string.Join(" ", NewOps.ToArray()))
);
{
if (-1 != TableName.IndexOf(Qa.DFS_TEMP_FILE_MARKER))
{
try
{
System.Xml.XmlElement tt = GetDfsTableInfo(TableName);
string ttf = tt["file"].InnerText;
if (-1 != ttf.IndexOf(Qa.DFS_TEMP_FILE_MARKER))
{
dfsclient.DeleteFile(ttf);
}
}
catch
{
}
}
}
Qa.PrepareSelect.queryresults qr = Qa.PrepareSelect.GetQueryResults(sel1);
for (int iobc = 0; iobc < OrderByCols.Count; iobc++)
{
qr.fields[iobc].name = "~OBY.~" + qr.fields[iobc].name;
}
try
{
string newopts = "";
if (dfstemp)
{
newopts += ";DFSTEMP";
}
if (dfsref)
{
newopts += ";DFSREF";
}
if (topdfstemp)
{
newopts += ";TOPTEMP";
}
if (distinct)
{
newopts += ";DISTINCT";
}
PrepareSelect ps2 = new PrepareSelect();
string neworderby;
{
StringBuilder sbnob = new StringBuilder();
//"ORDER\0BY\0" + sOrderByCols.Replace(',', '\0')
sbnob.Append("ORDER\0BY");
bool firstsbnob = true;
for (int iobc = 0; iobc < OrderByCols.Count; iobc++)
{
if (!firstsbnob)
{
sbnob.Append("\0,");
}
firstsbnob = false;
sbnob.Append('\0');
sbnob.Append(qr.fields[iobc].name); // Includes "~OBY.~"
}
neworderby = sbnob.ToString();
}
#if DEBUG
//System.Diagnostics.Debugger.Launch();
#endif
newopts += ";O2BY"; // Order-by phase 2.
// [QlArgs]SelectWhat might have () but they are NOT evaluated at this point (no SFUNC)
string sel2 = ps2.Exec(
Qa.QlArgsEscape(qr.GetPseudoTableName()),
DfsOutputName,
//(OrderByCols.Split(',').Length + 2).ToString() + "-*", // Select N-* where N is after OrderByCols
QlArgsSelectWhat,
TopCount.ToString(),
QlArgsEscape(neworderby),
newopts
);
DSpace_Log(sel2);
}
finally
{
if (qr.IsTempTable)
{
{
string delfile = qr.temptable;
{
int iat = delfile.IndexOf('@');
if (-1 != iat)
{
delfile = delfile.Substring(0, iat);
}
}
dfsclient.DeleteFile(delfile);
}
}
}
return;
}
}
string[] awhat = null;
string[] UserColumnNames = null;
if ("*" != SelectWhat && "^" != SelectWhat)
{
awhat = SelectWhat.Split('\0');
UserColumnNames = new string[awhat.Length];
for (int iww = 0; iww < awhat.Length; iww++)
{
int ilas = awhat[iww].LastIndexOf(" AS ", StringComparison.OrdinalIgnoreCase);
if (-1 == ilas)
{
UserColumnNames[iww] = awhat[iww];
}
else
{
string asname = awhat[iww].Substring(ilas + 4);
for (int iy = 0; iy < asname.Length; iy++)
{
if (!char.IsLetterOrDigit(asname[iy])
&& '_' != asname[iy])
{
asname = null;
break;
}
}
if (!string.IsNullOrEmpty(asname) && !char.IsDigit(asname[0]))
{
UserColumnNames[iww] = asname;
awhat[iww] = awhat[iww].Substring(0, ilas);
}
else
{
UserColumnNames[iww] = awhat[iww];
}
}
}
}
#if DEBUG
if (Update && !dfstemp)
{
throw new Exception("DEBUG: (Update && !dfstemp)");
}
#endif
System.Xml.XmlDocument systables;
using (GlobalCriticalSection.GetLock())
{
systables = LoadSysTables_unlocked();
}
System.Xml.XmlElement xeTable;
string DfsTableFilesInput; // Note: can be multiple semicolon-separated input files. Includes record length info (@N).
string sRowSize;
int RowSize;
if (-1 != TableName.IndexOf('\0'))
{
string[] tables = TableName.Split('\0');
string tn = tables[0];
xeTable = FindTable(systables, tn);
if (null == xeTable)
{
throw new Exception("Table '" + tn + "' does not exist");
}
sRowSize = xeTable["size"].InnerText;
RowSize = int.Parse(sRowSize);
DfsTableFilesInput = xeTable["file"].InnerText + "@" + sRowSize;
System.Xml.XmlNodeList xnlTableCols = xeTable.SelectNodes("column");
int numcols = xnlTableCols.Count;
for (int tni = 1; tni < tables.Length; tni++)
{
tn = tables[tni];
System.Xml.XmlElement xett = FindTable(systables, tn);
if (null == xett)
{
throw new Exception("Table '" + tn + "' does not exist");
}
System.Xml.XmlNodeList xnltcols = xett.SelectNodes("column");
bool colsmatch = false;
if (xnltcols.Count == numcols)
{
bool fail = false;
for (int ic = 0; ic < numcols; ic++)
{
if (xnlTableCols[ic]["type"].InnerText != xnltcols[ic]["type"].InnerText)
{
fail = true;
break;
}
if (0 != string.Compare(xnlTableCols[ic]["name"].InnerText, xnltcols[ic]["name"].InnerText, true))
{
fail = true;
break;
}
}
colsmatch = !fail;
}
if (!colsmatch)
{
throw new Exception("Columns of table " + tn + " do not match columns of table " + xeTable["name"].InnerText);
}
DfsTableFilesInput += ";" + xett["file"].InnerText + "@" + sRowSize;
}
if (-1 != DfsTableFilesInput.IndexOf("qa://", StringComparison.OrdinalIgnoreCase))
{
throw new Exception("Cannot union with a system table"); /////////
}
}
else
{
xeTable = FindTable(systables, TableName);
if (null == xeTable)
{
throw new Exception("Table '" + TableName + "' does not exist");
}
sRowSize = xeTable["size"].InnerText;
RowSize = int.Parse(sRowSize);
DfsTableFilesInput = xeTable["file"].InnerText + "@" + sRowSize;
}
if (dfsref)
{
DfsOutputName = xeTable["file"].InnerText;
}
if (queryresults)
{
DSpace_Log("<?xml version=\"1.0\"?>");
DSpace_Log(" <queryresults>");
if (dfsref)
{
DSpace_Log(" <reftable>" + DfsOutputName + "</reftable>");
}
else
{
DSpace_Log(" <temptable>" + DfsOutputName + "</temptable>");
}
}
string RowInfo;
string DisplayInfo; // Display
cols = new List<DbColumn>();
colswidths = new List<string>();
{
StringBuilder sbRowInfo = new StringBuilder();
StringBuilder sbDisplayInfo = new StringBuilder(); // Display
int totsize = 0;
string xtablename = xeTable["name"].InnerText;
foreach (System.Xml.XmlNode xn in xeTable.SelectNodes("column"))
{
if (0 != sbRowInfo.Length)
{
sbRowInfo.Append('\0');
sbDisplayInfo.Append(','); // Display
}
string stsize = xn["bytes"].InnerText;
int tsize = int.Parse(stsize);
string RealColName = xn["name"].InnerText;
string UserColName = RealColName;
if (null != awhat)
{
for (int iww = 0; iww < awhat.Length; iww++)
{
if (0 == string.Compare(awhat[iww], RealColName, true))
{
UserColName = UserColumnNames[iww];
break;
}
}
}
string xcolname;
if (-1 == UserColName.IndexOf('.'))
{
xcolname = xtablename + "." + UserColName;
}
else
{
xcolname = UserColName;
}
sbRowInfo.Append(xcolname); // Note: doesn't consider sub-select.
sbRowInfo.Append('=');
sbRowInfo.Append(stsize);
sbDisplayInfo.Append(xn["type"].InnerText); // Display
sbDisplayInfo.Append('='); // Display
sbDisplayInfo.Append(xn["dw"].InnerText); // Display
colswidths.Add(xn["dw"].InnerText);
{
DbColumn c;
c.Type = DbType.Prepare(xn["type"].InnerText, tsize);
c.RowOffset = totsize;
c.ColumnName = xcolname;
cols.Add(c);
}
totsize += tsize;
}
RowInfo = sbRowInfo.ToString();
DisplayInfo = sbDisplayInfo.ToString(); // Display
}
int KeyLength;
if (HasKeyOn)
{
KeyLength = RowSize;
}
else
{
KeyLength = 4;
}
bool IsSpecialOrdered = -1 != sOptions.IndexOf("SPECIALORDER");
string DfsInput;
string DfsTempInputFile = null;
// FIXME: look for all qa:// and run them through separately,...
if (DfsTableFilesInput.StartsWith("qa://", true, null))
{
if (dfsref)
{
throw new Exception("Cannot DFSREF with non-user table");
}
string SysGenOutputFile;
if (IsSpecialOrdered)
{
SysGenOutputFile = DfsOutputName + "@" + sRowSize;
DfsInput = null;
}
else
{
SysGenOutputFile = "dfs://RDBMS_QaTemp_" + Guid.NewGuid().ToString() + "@" + sRowSize;
DfsTempInputFile = SysGenOutputFile;
DfsInput = DfsTempInputFile;
}
{
string qafile = DfsTableFilesInput;
int iat = qafile.IndexOf('@');
if (-1 != iat)
{
qafile = qafile.Substring(0, iat);
}
{
RemoteCall rc = GetRemoteCallSysGen();
//rc.OverrideInput = #;
rc.OverrideOutput = SysGenOutputFile;
//rc.OverrideKeyLength = #;
rc.Call("\"" + qafile + "\" \"" + Qa.QlArgsEscape(RowInfo) + "\" \"" + DisplayInfo + "\" \"" + Qa.QlArgsEscape(TableName) + "\"").Trim();
}
}
}
else
{
DfsInput = DfsTableFilesInput;
}
#if DEBUG
if (null != DfsInput)
{
if (-1 == DfsInput.IndexOf('@'))
{
throw new Exception("Expected @ in DfsInput");
}
}
#endif
string OutputRowInfo;
string OutputDisplayInfo;
long OutputRowSize;
string OutputsRowSize;
List<string> outputcolswidths;
List<DbColumn> outputcols;
if (null != awhat)
{
outputcols = new List<DbColumn>(awhat.Length);
outputcolswidths = new List<string>();
StringBuilder sbRowInfo = new StringBuilder();
StringBuilder sbDisplayInfo = new StringBuilder();
long xRowSize = 0;
for (int iww = 0; iww < UserColumnNames.Length; iww++)
{
string w = UserColumnNames[iww];
string sdw; // String display width.
DbColumn c = GetDbColumn(w, out sdw);
if (c.Type.Size == 0)
{
throw new Exception("No such column named " + w);
}
if (0 != sbRowInfo.Length)
{
sbRowInfo.Append('\0');
sbDisplayInfo.Append(',');
}
{
outputcols.Add(c);
}
//sbRowInfo.Append(c.ColumnName); // Already includes "TableName."
sbRowInfo.Append(UserColumnNames[iww]);
sbRowInfo.Append('=');
sbRowInfo.Append(c.Type.Size);
sbDisplayInfo.Append(c.Type.Name);
sbDisplayInfo.Append('=');
sbDisplayInfo.Append(sdw);
xRowSize += c.Type.Size;
outputcolswidths.Add(sdw);
}
OutputRowInfo = sbRowInfo.ToString();
OutputDisplayInfo = sbDisplayInfo.ToString();
OutputRowSize = xRowSize;
OutputsRowSize = xRowSize.ToString();
}
else
{
// Same values!
outputcols = new List<DbColumn>(cols);
OutputRowInfo = RowInfo;
OutputDisplayInfo = DisplayInfo;
OutputRowSize = RowSize;
OutputsRowSize = sRowSize;
{
outputcolswidths = new List<string>(colswidths.Count);
for (int icw = 0; icw < colswidths.Count; icw++)
{
outputcolswidths.Add(colswidths[icw]);
}
}
}
string QlArgsNewSelectWhat = QlArgsSelectWhat;
if (null != UserColumnNames)
{
QlArgsNewSelectWhat = QlArgsEscape(string.Join("\0", UserColumnNames));
}
string shelloutputSelect1 = "";
if (!dfsref) // Important! Don't run Select DBCORE if DFSREF.
{
if (!IsSpecialOrdered)
{
if (WhatFunctions)
{
string FuncDfsInput = DfsInput;
string FuncDfsOutput = "dfs://RDBMS_SelectFunc_" + Guid.NewGuid().ToString();
FuncDfsOutput = DfsOutputName; // For now...
string FuncArgsOptions = "SFUNC"; // Select clause functions (aggregates and/or scalars).
if (GroupBy)
{
FuncArgsOptions += ";GBY";
}
string FuncSelectOutput1;
{
MapReduceCall mrc = GetMapReduceCallSelect(FuncDfsInput);
mrc.OverrideOutputMethod = "grouped";
mrc.OverrideInput = FuncDfsInput;
mrc.OverrideOutput = FuncDfsOutput + "@" + OutputsRowSize;
mrc.OverrideKeyLength = KeyLength;
FuncSelectOutput1 = mrc.Call("\"" + TableName + "\" \"" + DfsOutputName + "\" \"" + QlArgsNewSelectWhat + "\" " + TopCount.ToString() + " \"" + QlArgsOps + "\" \"" + Qa.QlArgsEscape(RowInfo) + "\" \"" + DisplayInfo + "\" \"" + Qa.QlArgsEscape(OutputRowInfo) + "\" " + FuncArgsOptions).Trim();
}
string[] FuncOutputTypeNames;
{
const string AOTIBEGINSTRING = "BEGIN:{AC596AA3-8E2F-41fa-B9E1-601D92F08AEC}";
int aotiBegin = FuncSelectOutput1.IndexOf(AOTIBEGINSTRING);
if (-1 == aotiBegin)
{
string et = "Function (aggregate and/or scalar) Select MR output invalid (expected begin output type information)";
//#if DEBUG
et += "\r\nMR output:\r\n" + FuncSelectOutput1 + "\r\n";
//#endif
throw new Exception(et);
}
int aotiEnd = FuncSelectOutput1.IndexOf("{AC596AA3-8E2F-41fa-B9E1-601D92F08AEC}:END");
if (aotiEnd < aotiBegin)
{
throw new Exception("Function (aggregate and/or scalar) Select MR output invalid (expected end output type information)");
}
{
string stypes = FuncSelectOutput1.Substring(aotiBegin + AOTIBEGINSTRING.Length, aotiEnd - aotiBegin - AOTIBEGINSTRING.Length);
FuncOutputTypeNames = System.Text.RegularExpressions.Regex.Split(stypes, @"\{264E73F6-E3C9-43de-A3FD-9AC36F905087\}");
}
}
if (FuncOutputTypeNames.Length != outputcolswidths.Count)
{
throw new Exception("DEBUG: (FuncOutputTypeNames.Length != outputcolswidths.Count)");
}
{
StringBuilder sbOutputDisplayInfo = new StringBuilder();
for (int icw = 0; icw < FuncOutputTypeNames.Length; icw++)
{
if (icw > 0)
{
sbOutputDisplayInfo.Append(',');
}
sbOutputDisplayInfo.Append(FuncOutputTypeNames[icw]);
sbOutputDisplayInfo.Append('=');
sbOutputDisplayInfo.Append(outputcolswidths[icw]);
}
OutputDisplayInfo = sbOutputDisplayInfo.ToString();
}
if (FuncOutputTypeNames.Length != outputcols.Count)
{
throw new Exception("DEBUG: (FuncOutputTypeNames.Length != outputcols.Count)");
}
{
// Fix output type, since I didn't know until the output was generated.
for (int oic = 0; oic < FuncOutputTypeNames.Length; oic++)
{
DbColumn c = outputcols[oic];
c.Type = DbType.Prepare(FuncOutputTypeNames[oic], c.Type.Size);
outputcols[oic] = c;
}
}
DfsInput = FuncDfsOutput + "@" + OutputsRowSize;
{
RowInfo = OutputRowInfo;
DisplayInfo = OutputDisplayInfo;
QlArgsNewSelectWhat = "*";
}
}
else if (GroupBy)
{
string GByDfsInput = DfsInput;
string GByDfsOutput = "dfs://RDBMS_SelectGroupBy_" + Guid.NewGuid().ToString();
GByDfsOutput = DfsOutputName; // For now...
string GByArgsOptions = "GBY";
{
MapReduceCall mrc = GetMapReduceCallSelect(GByDfsInput);
mrc.OverrideOutputMethod = "grouped";
mrc.OverrideInput = GByDfsInput;
mrc.OverrideOutput = GByDfsOutput + "@" + OutputsRowSize;
mrc.OverrideKeyLength = KeyLength;
if (RDBMS_DBCORE.Qa.FaultTolerantExecution)
{
mrc.OverrideFaultTolerantExecutionMode = "enabled";
}
mrc.Call("\"" + TableName + "\" \"" + DfsOutputName + "\" \"" + QlArgsNewSelectWhat + "\" " + TopCount.ToString() + " \"" + QlArgsOps + "\" \"" + Qa.QlArgsEscape(RowInfo) + "\" \"" + DisplayInfo + "\" \"" + Qa.QlArgsEscape(OutputRowInfo) + "\" " + GByArgsOptions).Trim();
}
DfsInput = GByDfsOutput + "@" + OutputsRowSize;
{
RowInfo = OutputRowInfo;
DisplayInfo = OutputDisplayInfo;
QlArgsNewSelectWhat = "*";
}
}
else
{
{
MapReduceCall mrc = GetMapReduceCallSelect(DfsInput);
if (!OrderBy || Update)
{
mrc.OverrideOutputMethod = "grouped";
if (RDBMS_DBCORE.Qa.FaultTolerantExecution)
{
mrc.OverrideFaultTolerantExecutionMode = "enabled";
}
}
mrc.OverrideInput = DfsInput;
mrc.OverrideOutput = DfsOutputName + "@" + OutputsRowSize;
mrc.OverrideKeyLength = KeyLength;
shelloutputSelect1 = mrc.Call("\"" + TableName + "\" \"" + DfsOutputName + "\" \"" + QlArgsNewSelectWhat + "\" " + TopCount.ToString() + " \"" + QlArgsOps + "\" \"" + Qa.QlArgsEscape(RowInfo) + "\" \"" + DisplayInfo + "\" \"" + Qa.QlArgsEscape(OutputRowInfo) + "\"").Trim();
}
}
}
else
{
if (null != awhat)
{
// This case shouldn't happen anyways.. becuase if custom columns, it's not a even special order command anymore.
throw new Exception("Special order commands must select all columns: SELECT * FROM " + TableName + " ...");
}
}
}
if (null != DfsTempInputFile)
{
{
string delfile = DfsTempInputFile;
{
int iat = delfile.IndexOf('@');
if (-1 != iat)
{
delfile = delfile.Substring(0, iat);
}
}
dfsclient.DeleteFile(delfile);
}
}
if (distinct)
{
string outtablefn = DfsOutputName + "_out_" + Guid.NewGuid().ToString();
{
MapReduceCall mrc = GetMapReduceCallDistinct();
//mrc.OverrideOutputMethod = #;
mrc.OverrideInput = DfsOutputName + "@" + OutputsRowSize;
mrc.OverrideOutput = outtablefn + "@" + OutputsRowSize;
mrc.OverrideKeyLength = int.Parse(OutputsRowSize);
mrc.Call().Trim();
}
Shell("dspace swap \"" + outtablefn + "\" \"" + DfsOutputName + "\"");
dfsclient.DeleteFile(outtablefn);
}
if (queryresults)
{
{
int dtfieldindex = 0;
foreach (DbColumn c in outputcols)
{
LogFieldInfo(dtfieldindex++, c, !joined);
}
}
string sDfsOutputSize = dfsclient.GetFileSizeString(DfsOutputName);
long DfsOutputSize = long.Parse(sDfsOutputSize);
long NumRowsOutput = DfsOutputSize / OutputRowSize;
if (0 != (DfsOutputSize % OutputRowSize))
{
throw new Exception("Output file size miscalculation (DfsOutputSize{" + DfsOutputSize + "} % OutputRowSize{" + OutputRowSize + "}) for file: " + DfsOutputName);
}
long recordcount = NumRowsOutput;
if (TopCount >= 0)
{
if (recordcount > TopCount)
{
recordcount = TopCount;
if (topdfstemp)
{
string outtablefn = DfsOutputName + "_out_" + Guid.NewGuid().ToString();
{
RemoteCall rc = GetRemoteCallWriteTop();
rc.OverrideInput = DfsOutputName + "@" + OutputsRowSize;
rc.OverrideOutput = outtablefn + "@" + OutputsRowSize;
rc.Call(TopCount.ToString()).Trim();
}
Shell("dspace swap \"" + DfsOutputName + "\" \"" + outtablefn + "\"");
dfsclient.DeleteFile(outtablefn);
}
}
}
DSpace_Log(" <recordcount>" + recordcount.ToString() + "</recordcount>");
DSpace_Log(" <recordsize>" + OutputsRowSize + "</recordsize>");
string sPartCount = dfsclient.GetFilePartCountString(DfsOutputName);
DSpace_Log(" <parts>" + sPartCount + "</parts>");
DSpace_Log(" </queryresults>");
}
else
{
DSpace_Log(shelloutputSelect1);
string sTopOptions = "-";
if (joined)
{
sTopOptions += ";JOINED";
}
string topoutput1;
{
RemoteCall rc = GetRemoteCallTop(DfsOutputName);
rc.OverrideInput = DfsOutputName + "@" + OutputsRowSize;
topoutput1 = rc.Call("\"" + TableName + "\" \"" + DfsOutputName + "\" \"" + Qa.QlArgsEscape(OutputRowInfo) + "\" \"" + OutputDisplayInfo + "\" " + TopCount.ToString() + " " + sTopOptions).Trim();
}
DSpace_Log(topoutput1);
{
string delfile = DfsOutputName;
{
int iat = delfile.IndexOf('@');
if (-1 != iat)
{
delfile = delfile.Substring(0, iat);
}
}
dfsclient.DeleteFile(delfile);
}
}
}
protected override void Run()
{
string QlLeftTableName = DSpace_ExecArgs[0];
string LeftTableName = QlArgsUnescape(QlLeftTableName);
string stype = DSpace_ExecArgs[1];
string QlRightTableName = DSpace_ExecArgs[2];
string RightTableName = QlArgsUnescape(QlRightTableName);
string QlOn = DSpace_ExecArgs[3];
string On = QlArgsUnescape(QlOn);
if (-1 != LeftTableName.IndexOf('\0'))
{
throw new NotSupportedException("Cannot JOIN with multiple left tables: " + LeftTableName);
}
if (-1 != RightTableName.IndexOf('\0'))
{
throw new NotSupportedException("Cannot JOIN with multiple right tables: " + RightTableName);
}
System.Xml.XmlDocument systables;
using (GlobalCriticalSection.GetLock())
{
systables = LoadSysTables_unlocked();
}
System.Xml.XmlElement xeLeftTable = FindTable(systables, LeftTableName);
if (null == xeLeftTable)
{
throw new Exception("Table (left) '" + LeftTableName + "' does not exist");
}
string sLeftRowSize = xeLeftTable["size"].InnerText;
int LeftRowSize = int.Parse(sLeftRowSize);
string LeftDfsTableFilesInput = xeLeftTable["file"].InnerText + "@" + sLeftRowSize;
if (LeftDfsTableFilesInput.StartsWith("qa://", true, null))
{
throw new Exception("Cannot JOIN with system tables (left)");
}
System.Xml.XmlElement xeRightTable = FindTable(systables, RightTableName);
if (null == xeRightTable)
{
throw new Exception("Table (right) '" + RightTableName + "' does not exist");
}
string sRightRowSize = xeRightTable["size"].InnerText;
int RightRowSize = int.Parse(sRightRowSize);
string RightDfsTableFilesInput = xeRightTable["file"].InnerText + "@" + sRightRowSize;
if (RightDfsTableFilesInput.StartsWith("qa://", true, null))
{
throw new Exception("Cannot JOIN with system tables (right)");
}
string DfsTableFilesInput = LeftDfsTableFilesInput + ";" + RightDfsTableFilesInput;
string DfsOutputName = "dfs://RDBMS_JoinOn_" + Guid.NewGuid().ToString() + Qa.DFS_TEMP_FILE_MARKER;
int DfsOutputRowSize = LeftRowSize + RightRowSize;
string LeftRowInfo;
string LeftDisplayInfo; // Display
List <DbColumn> LeftCols = new List <DbColumn>();
List <string> LeftColsWidths = new List <string>();
{
StringBuilder sbRowInfo = new StringBuilder();
StringBuilder sbDisplayInfo = new StringBuilder(); // Display
int totsize = 0;
string xtablename = xeLeftTable["name"].InnerText;
foreach (System.Xml.XmlNode xn in xeLeftTable.SelectNodes("column"))
{
if (0 != sbRowInfo.Length)
{
sbRowInfo.Append('\0');
sbDisplayInfo.Append(','); // Display
}
string stsize = xn["bytes"].InnerText;
int tsize = int.Parse(stsize);
string RealColName = xn["name"].InnerText;
string UserColName = RealColName;
string xcolname;
if (-1 == UserColName.IndexOf('.'))
{
xcolname = xtablename + "." + UserColName;
}
else
{
xcolname = UserColName;
}
sbRowInfo.Append(xcolname); // Note: doesn't consider sub-select.
sbRowInfo.Append('=');
sbRowInfo.Append(stsize);
sbDisplayInfo.Append(xn["type"].InnerText); // Display
sbDisplayInfo.Append('='); // Display
sbDisplayInfo.Append(xn["dw"].InnerText); // Display
LeftColsWidths.Add(xn["dw"].InnerText);
{
DbColumn c;
c.Type = DbType.Prepare(xn["type"].InnerText, tsize);
c.RowOffset = totsize;
c.ColumnName = xcolname;
LeftCols.Add(c);
}
totsize += tsize;
}
LeftRowInfo = sbRowInfo.ToString();
LeftDisplayInfo = sbDisplayInfo.ToString(); // Display
}
string RightRowInfo;
string RightDisplayInfo; // Display
List <DbColumn> RightCols = new List <DbColumn>();
List <string> RightColsWidths = new List <string>();
{
StringBuilder sbRowInfo = new StringBuilder();
StringBuilder sbDisplayInfo = new StringBuilder(); // Display
int totsize = 0;
string xtablename = xeRightTable["name"].InnerText;
foreach (System.Xml.XmlNode xn in xeRightTable.SelectNodes("column"))
{
if (0 != sbRowInfo.Length)
{
sbRowInfo.Append('\0');
sbDisplayInfo.Append(','); // Display
}
string stsize = xn["bytes"].InnerText;
int tsize = int.Parse(stsize);
string RealColName = xn["name"].InnerText;
string UserColName = RealColName;
string xcolname;
if (-1 == UserColName.IndexOf('.'))
{
xcolname = xtablename + "." + UserColName;
}
else
{
xcolname = UserColName;
}
sbRowInfo.Append(xcolname); // Note: doesn't consider sub-select.
sbRowInfo.Append('=');
sbRowInfo.Append(stsize);
sbDisplayInfo.Append(xn["type"].InnerText); // Display
sbDisplayInfo.Append('='); // Display
sbDisplayInfo.Append(xn["dw"].InnerText); // Display
RightColsWidths.Add(xn["dw"].InnerText);
{
DbColumn c;
c.Type = DbType.Prepare(xn["type"].InnerText, tsize);
c.RowOffset = totsize;
c.ColumnName = xcolname;
RightCols.Add(c);
}
totsize += tsize;
}
RightRowInfo = sbRowInfo.ToString();
RightDisplayInfo = sbDisplayInfo.ToString(); // Display
}
string on1, onop, on2;
{
string onargs = On;
on1 = Qa.NextPart(ref onargs);
onop = Qa.NextPart(ref onargs);
on2 = Qa.NextPart(ref onargs);
if (0 == on1.Length ||
0 == onop.Length ||
0 == on2.Length ||
0 != onargs.Trim().Length)
{
throw new Exception("Invalid ON expression for JOIN: " + On);
}
}
bool on1left;
int on1colindex;
{
int on1colindexother;
on1colindex = DbColumn.IndexOf(LeftCols, on1);
on1colindexother = DbColumn.IndexOf(RightCols, on1);
if (-1 != on1colindex)
{
if (-1 != on1colindexother)
{
throw new Exception("Column name " + on1 + " does not resolve to a single column (in left and right tables)");
}
else
{
on1left = true;
}
}
else
{
if (-1 != on1colindexother)
{
on1colindex = on1colindexother;
on1left = false;
}
else
{
throw new Exception("No such column named " + on1);
}
}
}
bool on2left;
int on2colindex;
{
int on2colindexother;
on2colindex = DbColumn.IndexOf(LeftCols, on2);
on2colindexother = DbColumn.IndexOf(RightCols, on2);
if (-1 != on2colindex)
{
if (-1 != on2colindexother)
{
throw new Exception("Column name " + on2 + " does not resolve to a single column (in left and right tables)");
}
else
{
on2left = true;
}
}
else
{
if (-1 != on2colindexother)
{
on2colindex = on2colindexother;
on2left = false;
}
else
{
throw new Exception("No such column named " + on2);
}
}
}
if ((on1left && on2left) ||
(!on1left && !on2left))
{
string whicht;
if (on1left)
{
whicht = "(left) " + LeftTableName;
}
else
{
whicht = "(right) " + RightTableName;
}
throw new Exception("ON expression is comparing columns from the same table: "
+ on1 + " and " + on2 + " are both part of " + whicht);
}
// Order ON columns:
if (!on1left)
{
{
string onx = on1;
on1 = on2;
on2 = onx;
}
{
int onxcolindex = on1colindex;
on1colindex = on2colindex;
on2colindex = onxcolindex;
}
{
on1left = true;
on2left = false;
}
// Invert the operator..
switch (onop)
{
case "=":
//onop = "=";
break;
case "!=":
//onop = "!=";
break;
case "<":
onop = ">";
break;
case "<=":
onop = ">=";
break;
case ">":
onop = "<";
break;
case ">=":
onop = "<=";
break;
default:
throw new Exception("Unhandled ON operation: " + onop);
}
On = on1 + " " + onop + " " + on2;
QlOn = QlArgsEscape(On);
}
DbColumn on1col;
if (on1left)
{
on1col = LeftCols[on1colindex];
}
else
{
//on1col = RightCols[on1colindex];
throw new Exception("DEBUG: PrepareJoinOn: (!on1left)");
}
if (on1col.Type.Size == 0 || on1col.Type.ID == DbTypeID.NULL)
{
throw new Exception("Invalid column for ON expression: " + on1);
}
DbColumn on2col;
if (on2left)
{
//on2col = LeftCols[on2colindex];
throw new Exception("DEBUG: PrepareJoinOn: (on2left)");
}
else
{
on2col = RightCols[on2colindex];
}
if (on2col.Type.Size == 0 || on2col.Type.ID == DbTypeID.NULL)
{
throw new Exception("Invalid column for ON expression: " + on2);
}
int KeyLength = on1col.Type.Size;
if (on2col.Type.Size > KeyLength)
{
KeyLength = on2col.Type.Size;
}
{
MapReduceCall mrc = GetMapReduceCallJoinOn(DfsTableFilesInput);
mrc.OverrideOutputMethod = "grouped";
mrc.OverrideInput = DfsTableFilesInput;
mrc.OverrideOutput = DfsOutputName + "@" + DfsOutputRowSize;
mrc.OverrideKeyLength = KeyLength;
if (RDBMS_DBCORE.Qa.FaultTolerantExecution)
{
mrc.OverrideFaultTolerantExecutionMode = "enabled";
}
mrc.Call("\"" + QlLeftTableName + "\" " + stype + " \"" + QlRightTableName
+ "\" \"" + QlOn
+ "\" \"" + on1col.RowOffset + "," + on1col.Type.Size + "=" + QlArgsEscape(on1col.Type.Name)
+ "\" \"" + on2col.RowOffset + "," + on2col.Type.Size + "=" + QlArgsEscape(on2col.Type.Name)
+ "\" \"" + DfsTableFilesInput
+ "\"");
}
{
PrepareSelect.queryresults qr = new PrepareSelect.queryresults();
List <DbColumn> AllCols = new List <DbColumn>(LeftCols.Count + RightCols.Count);
AllCols.AddRange(LeftCols);
AllCols.AddRange(RightCols);
qr.SetFields(AllCols);
qr.temptable = DfsOutputName;
qr.recordsize = LeftRowSize + RightRowSize;
string sPartCount = Shell("dspace countparts \"" + DfsOutputName + "\"").Split('\n')[0].Trim();
qr.parts = int.Parse(sPartCount);
string sDfsOutputSize = Shell("dspace filesize \"" + DfsOutputName + "\"").Split('\n')[0].Trim();
long DfsOutputSize = long.Parse(sDfsOutputSize);
long NumRowsOutput = DfsOutputSize / qr.recordsize;
qr.recordcount = NumRowsOutput;
DSpace_Log(PrepareSelect.SetQueryResults(qr));
}
}
