Non working attempt to do MCOL-5227

dbcon/execplan/jsonarrayaggcolumn.h

@@ -0,0 +1,143 @@
+/* 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. */
+
+/** @file */
+
+#pragma once
+#include <string>
+
+#include "calpontselectexecutionplan.h"
+#include "aggregatecolumn.h"
+
+namespace messageqcpp
+{
+class ByteStream;
+}
+
+/**
+ * Namespace
+ */
+namespace execplan
+{
+/**
+ * @brief A class to represent a aggregate return column
+ *
+ * This class is a specialization of class ReturnedColumn that
+ * handles an aggregate function call (e.g., SUM, COUNT, MIN, MAX).
+ */
+class JsonArrayAggColumn : public AggregateColumn
+{
+ public:
+  /**
+   * Constructors
+   */
+  JsonArrayAggColumn();
+
+  JsonArrayAggColumn(const uint32_t sessionID);
+
+  JsonArrayAggColumn(const JsonArrayAggColumn& rhs, const uint32_t sessionID = 0);
+
+  /**
+   * Destructors
+   */
+  virtual ~JsonArrayAggColumn();
+
+  /**
+   * Overloaded stream operator
+   */
+  virtual const std::string toString() const;
+
+  /** return a copy of this pointer
+   *
+   * deep copy of this pointer and return the copy
+   */
+  virtual JsonArrayAggColumn* clone() const
+  {
+    return new JsonArrayAggColumn(*this);
+  }
+
+  /**
+   * Accessors and Mutators
+   */
+  void orderCols(const std::vector<SRCP>& orderCols)
+  {
+    fOrderCols = orderCols;
+  }
+  std::vector<SRCP>& orderCols()
+  {
+    return fOrderCols;
+  }
+  void separator(const std::string& separator)
+  {
+    fSeparator = separator;
+  }
+  std::string& separator()
+  {
+    return fSeparator;
+  }
+
+  /**
+   * Serialize interface
+   */
+  virtual void serialize(messageqcpp::ByteStream&) const;
+  virtual void unserialize(messageqcpp::ByteStream&);
+
+  /** @brief Do a deep, strict (as opposed to semantic) equivalence test
+   *
+   * Do a deep, strict (as opposed to semantic) equivalence test.
+   * @return true iff every member of t is a duplicate copy of every member of this;
+   *         false otherwise
+   */
+  virtual bool operator==(const TreeNode* t) const;
+
+  /** @brief Do a deep, strict (as opposed to semantic) equivalence test
+   *
+   * Do a deep, strict (as opposed to semantic) equivalence test.
+   * @return true iff every member of t is a duplicate copy of every member of this;
+   *         false otherwise
+   */
+  using AggregateColumn::operator==;
+  virtual bool operator==(const JsonArrayAggColumn& t) const;
+
+  /** @brief Do a deep, strict (as opposed to semantic) equivalence test
+   *
+   * Do a deep, strict (as opposed to semantic) equivalence test.
+   * @return false iff every member of t is a duplicate copy of every member of this;
+   *         true otherwise
+   */
+  virtual bool operator!=(const TreeNode* t) const;
+
+  /** @brief Do a deep, strict (as opposed to semantic) equivalence test
+   *
+   * Do a deep, strict (as opposed to semantic) equivalence test.
+   * @return false iff every member of t is a duplicate copy of every member of this;
+   *         true otherwise
+   */
+  using AggregateColumn::operator!=;
+  virtual bool operator!=(const JsonArrayAggColumn& t) const;
+
+ private:
+  std::vector<SRCP> fOrderCols;
+  std::string fSeparator;
+};
+
+/**
+ * stream operator
+ */
+std::ostream& operator<<(std::ostream& os, const JsonArrayAggColumn& rhs);
+
+}  // namespace execplan