the begginning

dbcon/execplan/returnedcolumn.cpp

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+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/***********************************************************************
+*   $Id: returnedcolumn.cpp 9413 2013-04-22 22:03:42Z zzhu $
+*
+*
+***********************************************************************/
+
+#include <iostream>
+#include <string>
+
+#include "bytestream.h"
+#include "returnedcolumn.h"
+#include "objectreader.h"
+
+using namespace std;
+using namespace messageqcpp;
+
+namespace execplan
+{
+/**
+ * Constructors/Destructors
+ */
+ReturnedColumn::ReturnedColumn(): fReturnAll (false),
+                                  fSessionID(0),
+                                  fSequence(-1),
+                                  fCardinality(0),
+                                  fDistinct(false),
+                                  fJoinInfo(0),
+                                  fAsc(true),
+                                  fNullsFirst(true),
+                                  fOrderPos((uint64_t)-1),
+                                  fColSource(0),
+                                  fColPosition(-1),
+                                  fHasAggregate(false),
+                                  fInputIndex(-1),
+                                  fOutputIndex(-1),
+                                  fExpressionId ((uint32_t)-1)
+{
+}
+
+ReturnedColumn::ReturnedColumn(const string& sql):
+    fReturnAll (false),
+    fSessionID(0),
+    fSequence(-1),
+    fCardinality(0),
+    fDistinct(false),
+    fJoinInfo(0),
+    fAsc(true),
+    fNullsFirst(true),
+    fOrderPos((uint64_t)-1),
+    fColSource(0),
+    fColPosition(-1),
+    fHasAggregate(false),
+    fData(sql),
+    fInputIndex(-1),
+    fOutputIndex(-1),
+    fExpressionId ((uint32_t)-1)
+{
+}
+
+ReturnedColumn::ReturnedColumn(const uint32_t sessionID, const bool returnAll):
+                                  fReturnAll(returnAll),
+                                  fSessionID(sessionID),
+                                  fSequence(-1),
+                                  fCardinality(0),
+                                  fDistinct(false),
+                                  fJoinInfo(0),
+                                  fAsc(true),
+                                  fNullsFirst(true),
+                                  fOrderPos((uint64_t)-1),
+                                  fColSource(0),
+                                  fColPosition(-1),
+                                  fHasAggregate(false),
+                                  fInputIndex(-1),
+                                  fOutputIndex(-1),
+                                  fExpressionId ((uint32_t)-1)
+{
+}
+
+ReturnedColumn::ReturnedColumn(const ReturnedColumn& rhs, const uint32_t sessionID):
+	TreeNode(rhs),
+	fReturnAll(rhs.fReturnAll),
+	fSessionID(sessionID),
+	fSequence(rhs.fSequence),
+	fCardinality(rhs.fCardinality),
+	fDistinct(rhs.fDistinct),
+	fJoinInfo(rhs.fJoinInfo),
+	fAsc(rhs.fAsc),
+	fNullsFirst(rhs.fNullsFirst),
+	fOrderPos(rhs.fOrderPos),
+	fColSource(rhs.fColSource),
+	fColPosition(rhs.fColPosition),
+	fHasAggregate(rhs.fHasAggregate),
+	fData(rhs.fData),
+	fInputIndex(rhs.fInputIndex),
+	fOutputIndex(rhs.fOutputIndex),
+	fExpressionId (rhs.fExpressionId)
+{
+}
+
+ReturnedColumn::~ReturnedColumn()
+{
+}
+
+/**
+ * ostream function
+ */
+ostream& operator<<(ostream &output, const ReturnedColumn &retCol)
+{
+	output << retCol.toString() << endl;
+	return output;
+}
+
+void ReturnedColumn::serialize(messageqcpp::ByteStream& b) const
+{
+	b << (ObjectReader::id_t) ObjectReader::RETURNEDCOLUMN;
+	b << fData;
+	b << (uint64_t) fCardinality;
+	b << fAlias;
+	b << (uint8_t)fDistinct;
+	b << (uint64_t)fJoinInfo;
+	b << (uint8_t)fAsc;
+	b << (uint8_t)fNullsFirst;
+	b << (uint64_t)fOrderPos;
+	b << (uint64_t)fColSource;
+	b << (int64_t)fColPosition;
+	b << (uint32_t)fInputIndex;
+	b << (uint32_t)fOutputIndex;
+	b << (int32_t)fSequence;
+	b << (uint8_t)fReturnAll;
+	fResultType.serialize(b);
+	fOperationType.serialize(b);
+	b << (uint32_t)fExpressionId;
+}
+
+void ReturnedColumn::unserialize(messageqcpp::ByteStream& b)
+{
+	ObjectReader::checkType(b, ObjectReader::RETURNEDCOLUMN);
+	b >> fData;
+	b >> (uint64_t&)fCardinality;
+	b >> fAlias;
+	b >> (uint8_t&)fDistinct;
+	b >> (uint64_t&)fJoinInfo;
+	b >> (uint8_t&)fAsc;
+	b >> (uint8_t&)fNullsFirst;
+	b >> (uint64_t&)fOrderPos;
+	b >> (uint64_t&)fColSource;
+	b >> (int64_t&)fColPosition;
+	b >> (uint32_t&)fInputIndex;
+	b >> (uint32_t&)fOutputIndex;
+	b >> (int32_t&)fSequence;
+	b >> (uint8_t&)fReturnAll;
+	fResultType.unserialize(b);
+	fOperationType.unserialize(b);
+	b >> (uint32_t&)fExpressionId;
+}
+
+bool ReturnedColumn::operator==(const ReturnedColumn& t) const
+{
+	if (fData != t.fData)
+		return false;
+	if (fCardinality != t.fCardinality)
+		return false;
+	//if (fAlias != t.fAlias)
+	//	return false;
+	if (fDistinct != t.fDistinct)
+		return false;
+	if (fJoinInfo != t.fJoinInfo)
+		return false;
+	if (fAsc != t.fAsc)
+		return false;
+	if (fNullsFirst != t.fNullsFirst)
+		return false;
+	//if (fOrderPos != t.fOrderPos)
+	//	return false;
+	if (fInputIndex != t.fInputIndex)
+		return false;
+	if (fOutputIndex != t.fOutputIndex)
+		return false;
+	//if (fSequence != t.fSequence)
+	//	return false;
+	if (fResultType != t.fResultType)
+		return false;
+	if (fOperationType != t.fOperationType)
+		return false;
+	//if (fExpressionId != t.fExpressionId)
+	//	return false;
+	return true;
+}
+
+bool ReturnedColumn::operator==(const TreeNode* t) const
+{
+	const ReturnedColumn *rc;
+	
+	rc = dynamic_cast<const ReturnedColumn*>(t);
+	if (rc == NULL)
+		return false;
+	return *this == *rc;
+}
+
+bool ReturnedColumn::operator!=(const ReturnedColumn& t) const
+{
+	return !(*this == t);
+}
+
+bool ReturnedColumn::operator!=(const TreeNode* t) const
+{
+	return !(*this == t);
+}
+
+const string ReturnedColumn::data() const
+{
+	return fData;
+}
+
+const string ReturnedColumn::toString() const
+{
+	ostringstream oss;
+	oss << ">ReturnedColumn " << fJoinInfo << "<" << endl;
+	return oss.str();
+}
+
+// All columns that may have simple column added to the list need to implement
+// this function. Default behavior is to have no SC added to the list so
+// fSimpleColumnList will be cleared.
+void ReturnedColumn::setSimpleColumnList()
+{
+	fSimpleColumnList.clear();
+}
+
+
+} // namespace execplan